+++ /dev/null
-/*\r
- twi.c - TWI/I2C library for Atmega32U4\r
-\r
- Copyright (c) 2006 Nicholas Zambetti. All right reserved.\r
-\r
- This library is free software; you can redistribute it and/or\r
- modify it under the terms of the GNU Lesser General Public\r
- License as published by the Free Software Foundation; either\r
- version 2.1 of the License, or (at your option) any later version.\r
-\r
- This library is distributed in the hope that it will be useful,\r
- but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r
- Lesser General Public License for more details.\r
-\r
- You should have received a copy of the GNU Lesser General Public\r
- License along with this library; if not, write to the Free Software\r
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\r
-\r
- Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts\r
-\r
- Modified 2017 by Adrian Weber to use I2C without Arduino librarys\r
-*/\r
-\r
-#include <math.h>\r
-#include <stdlib.h>\r
-#include <inttypes.h>\r
-#include <avr/io.h>\r
-#include <avr/interrupt.h>\r
-#include <compat/twi.h>\r
-#include <stdbool.h>\r
-\r
-#ifndef cbi\r
-#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))\r
-#endif\r
-\r
-#ifndef sbi\r
-#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))\r
-#endif\r
-#include "twi.h"\r
-\r
-static volatile uint8_t twi_state;\r
-static volatile uint8_t twi_slarw;\r
-static volatile uint8_t twi_sendStop; // should the transaction end with a stop\r
-static volatile uint8_t twi_inRepStart; // in the middle of a repeated start\r
-\r
-static void (*twi_onSlaveTransmit)(void);\r
-static void (*twi_onSlaveReceive)(uint8_t*, int);\r
-\r
-static uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_masterBufferIndex;\r
-static volatile uint8_t twi_masterBufferLength;\r
-\r
-static uint8_t twi_txBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_txBufferIndex;\r
-static volatile uint8_t twi_txBufferLength;\r
-\r
-static uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_rxBufferIndex;\r
-\r
-static volatile uint8_t twi_error;\r
-\r
-\r
-/* \r
- * Function twi_init\r
- * Desc readys twi pins and sets twi bitrate\r
- * Input none\r
- * Output none\r
- */\r
-void twi_init(void)\r
-{\r
- // initialize state\r
- twi_state = TWI_READY;\r
- twi_sendStop = true; // default value\r
- twi_inRepStart = false;\r
- \r
- // activate internal pullups for twi.\r
- DDRD |= (1 << PC4);\r
- DDRD |= (1 << PC5);\r
- PORTD |= (1 << PC4);\r
- PORTD |= (1 << PC5);\r
-\r
- // initialize twi prescaler and bit rate\r
- cbi(TWSR, TWPS0);\r
- cbi(TWSR, TWPS1);\r
- TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;\r
-\r
- sei();\r
-\r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-\r
- // enable twi module, acks, and twi interrupt\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA);\r
-}\r
-\r
-/* \r
- * Function twi_disable\r
- * Desc disables twi pins\r
- * Input none\r
- * Output none\r
- */\r
-void twi_disable(void)\r
-{\r
- // disable twi module, acks, and twi interrupt\r
- TWCR &= ~(_BV(TWEN) | _BV(TWIE) | _BV(TWEA));\r
-\r
- // deactivate internal pullups for twi.\r
- DDRD |= (1 << PD0);\r
- DDRD |= (1 << PD1);\r
- PORTD |= (0 << PD0);\r
- PORTD |= (0 << PD1);\r
-\r
-}\r
-\r
-/* \r
- * Function twi_slaveInit\r
- * Desc sets slave address and enables interrupt\r
- * Input none\r
- * Output none\r
- */\r
-void twi_setAddress(uint8_t address)\r
-{\r
- // set twi slave address (skip over TWGCE bit)\r
- TWAR = address << 1;\r
-}\r
-\r
-/* \r
- * Function twi_setClock\r
- * Desc sets twi bit rate\r
- * Input Clock Frequency\r
- * Output none\r
- */\r
-void twi_setFrequency(uint32_t frequency)\r
-{\r
- TWBR = ((F_CPU / frequency) - 16) / 2;\r
- \r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-}\r
-\r
-/* \r
- * Function twi_readFrom\r
- * Desc attempts to become twi bus master and read a\r
- * series of bytes from a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes to read into array\r
- * sendStop: Boolean indicating whether to send a stop at the end\r
- * Output number of bytes read\r
- */\r
-uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 0;\r
- }\r
- // wait until twi is ready, become master receiver\r
- while(TWI_READY != twi_state){\r
- continue;\r
- } \r
- twi_state = TWI_MRX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length-1; // This is not intuitive, read on...\r
- // On receive, the previously configured ACK/NACK setting is transmitted in\r
- // response to the received byte before the interrupt is signalled. \r
- // Therefor we must actually set NACK when the _next_ to last byte is\r
- // received, causing that NACK to be sent in response to receiving the last\r
- // expected byte of data.\r
-\r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_READ;\r
- twi_slarw |= address << 1;\r
-\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent ourselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw;\r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTA);\r
-\r
- // wait for read operation to complete\r
- while(TWI_MRX == twi_state){\r
- continue;\r
- }\r
-\r
- if (twi_masterBufferIndex < length)\r
- length = twi_masterBufferIndex;\r
-\r
- // copy twi buffer to data\r
- for(i = 0; i < length; ++i){\r
- data[i] = twi_masterBuffer[i];\r
- }\r
- \r
- return length;\r
-}\r
-\r
-/* \r
- * Function twi_writeTo\r
- * Desc attempts to become twi bus master and write a\r
- * series of bytes to a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes in array\r
- * wait: boolean indicating to wait for write or not\r
- * sendStop: boolean indicating whether or not to send a stop at the end\r
- * Output 0 .. success\r
- * 1 .. length to long for buffer\r
- * 2 .. address send, NACK received\r
- * 3 .. data send, NACK received\r
- * 4 .. other twi error (lost bus arbitration, bus error, ..)\r
- */\r
-uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
-\r
- // wait until twi is ready, become master transmitter\r
- while(TWI_READY != twi_state){\r
- continue;\r
- }\r
- twi_state = TWI_MTX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length;\r
- \r
- // copy data to twi buffer\r
- for(i = 0; i < length; ++i){\r
- twi_masterBuffer[i] = data[i];\r
- }\r
- \r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_WRITE;\r
- twi_slarw |= address << 1;\r
- \r
-\r
- // if we're in a repeated start, then we've already sent the START\r
- // in the ISR. Don't do it again.\r
- //\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent outselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw; \r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE) | _BV(TWSTA); // enable INTs\r
-\r
-\r
- // wait for write operation to complete\r
- while(wait && (TWI_MTX == twi_state)){\r
- continue;\r
- }\r
-\r
- if (twi_error == 0xFF)\r
- return 0; // success\r
- else if (twi_error == TW_MT_SLA_NACK)\r
- return 2; // error: address send, nack received\r
- else if (twi_error == TW_MT_DATA_NACK)\r
- return 3; // error: data send, nack received\r
- else\r
- return 4; // other twi error\r
-}\r
-\r
-/* \r
- * Function twi_transmit\r
- * Desc fills slave tx buffer with data\r
- * must be called in slave tx event callback\r
- * Input data: pointer to byte array\r
- * length: number of bytes in array\r
- * Output 1 length too long for buffer\r
- * 2 not slave transmitter\r
- * 0 ok\r
- */\r
-uint8_t twi_transmit(const uint8_t* data, uint8_t length)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
- \r
- // ensure we are currently a slave transmitter\r
- if(TWI_STX != twi_state){\r
- return 2;\r
- }\r
- \r
- // set length and copy data into tx buffer\r
- twi_txBufferLength = length;\r
- for(i = 0; i < length; ++i){\r
- twi_txBuffer[i] = data[i];\r
- }\r
- \r
- return 0;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveRxEvent\r
- * Desc sets function called before a slave read operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveRxEvent( void (*function)(uint8_t*, int) )\r
-{\r
- twi_onSlaveReceive = function;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveTxEvent\r
- * Desc sets function called before a slave write operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveTxEvent( void (*function)(void) )\r
-{\r
- twi_onSlaveTransmit = function;\r
-}\r
-\r
-/* \r
- * Function twi_reply\r
- * Desc sends byte or readys receive line\r
- * Input ack: byte indicating to ack or to nack\r
- * Output none\r
- */\r
-void twi_reply(uint8_t ack)\r
-{\r
- // transmit master read ready signal, with or without ack\r
- if(ack){\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT) | _BV(TWEA);\r
- }else{\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT);\r
- }\r
-}\r
-\r
-/* \r
- * Function twi_stop\r
- * Desc relinquishes bus master status\r
- * Input none\r
- * Output none\r
- */\r
-void twi_stop(void)\r
-{\r
- // send stop condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO);\r
-\r
- // wait for stop condition to be exectued on bus\r
- // TWINT is not set after a stop condition!\r
- while(TWCR & _BV(TWSTO)){\r
- continue;\r
- }\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-/* \r
- * Function twi_releaseBus\r
- * Desc releases bus control\r
- * Input none\r
- * Output none\r
- */\r
-void twi_releaseBus(void)\r
-{\r
- // release bus\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT);\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-ISR(TWI_vect)\r
-{\r
- switch(TW_STATUS){\r
- // All Master\r
- case TW_START: // sent start condition\r
- case TW_REP_START: // sent repeated start condition\r
- // copy device address and r/w bit to output register and ack\r
- TWDR = twi_slarw;\r
- twi_reply(1);\r
- break;\r
-\r
- // Master Transmitter\r
- case TW_MT_SLA_ACK: // slave receiver acked address\r
- case TW_MT_DATA_ACK: // slave receiver acked data\r
- // if there is data to send, send it, otherwise stop \r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- // copy data to output register and ack\r
- TWDR = twi_masterBuffer[twi_masterBufferIndex++];\r
- twi_reply(1);\r
- }else{\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- }\r
- }\r
- break;\r
- case TW_MT_SLA_NACK: // address sent, nack received\r
- twi_error = TW_MT_SLA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_DATA_NACK: // data sent, nack received\r
- twi_error = TW_MT_DATA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_ARB_LOST: // lost bus arbitration\r
- twi_error = TW_MT_ARB_LOST;\r
- twi_releaseBus();\r
- break;\r
-\r
- // Master Receiver\r
- case TW_MR_DATA_ACK: // data received, ack sent\r
- // put byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- case TW_MR_SLA_ACK: // address sent, ack received\r
- // ack if more bytes are expected, otherwise nack\r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_MR_DATA_NACK: // data received, nack sent\r
- // put final byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- } \r
- break;\r
- case TW_MR_SLA_NACK: // address sent, nack received\r
- twi_stop();\r
- break;\r
- // TW_MR_ARB_LOST handled by TW_MT_ARB_LOST case\r
-\r
- // Slave Receiver\r
- case TW_SR_SLA_ACK: // addressed, returned ack\r
- case TW_SR_GCALL_ACK: // addressed generally, returned ack\r
- case TW_SR_ARB_LOST_SLA_ACK: // lost arbitration, returned ack\r
- case TW_SR_ARB_LOST_GCALL_ACK: // lost arbitration, returned ack\r
- // enter slave receiver mode\r
- twi_state = TWI_SRX;\r
- // indicate that rx buffer can be overwritten and ack\r
- twi_rxBufferIndex = 0;\r
- twi_reply(1);\r
- break;\r
- case TW_SR_DATA_ACK: // data received, returned ack\r
- case TW_SR_GCALL_DATA_ACK: // data received generally, returned ack\r
- // if there is still room in the rx buffer\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- // put byte in buffer and ack\r
- twi_rxBuffer[twi_rxBufferIndex++] = TWDR;\r
- twi_reply(1);\r
- }else{\r
- // otherwise nack\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_SR_STOP: // stop or repeated start condition received\r
- // ack future responses and leave slave receiver state\r
- twi_releaseBus();\r
- // put a null char after data if there's room\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- twi_rxBuffer[twi_rxBufferIndex] = '\0';\r
- }\r
- // callback to user defined callback\r
- twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);\r
- // since we submit rx buffer to "wire" library, we can reset it\r
- twi_rxBufferIndex = 0;\r
- break;\r
- case TW_SR_DATA_NACK: // data received, returned nack\r
- case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack\r
- // nack back at master\r
- twi_reply(0);\r
- break;\r
- \r
- // Slave Transmitter\r
- case TW_ST_SLA_ACK: // addressed, returned ack\r
- case TW_ST_ARB_LOST_SLA_ACK: // arbitration lost, returned ack\r
- // enter slave transmitter mode\r
- twi_state = TWI_STX;\r
- // ready the tx buffer index for iteration\r
- twi_txBufferIndex = 0;\r
- // set tx buffer length to be zero, to verify if user changes it\r
- twi_txBufferLength = 0;\r
- // request for txBuffer to be filled and length to be set\r
- // note: user must call twi_transmit(bytes, length) to do this\r
- twi_onSlaveTransmit();\r
- // if they didn't change buffer & length, initialize it\r
- if(0 == twi_txBufferLength){\r
- twi_txBufferLength = 1;\r
- twi_txBuffer[0] = 0x00;\r
- }\r
- // transmit first byte from buffer, fall\r
- case TW_ST_DATA_ACK: // byte sent, ack returned\r
- // copy data to output register\r
- TWDR = twi_txBuffer[twi_txBufferIndex++];\r
- // if there is more to send, ack, otherwise nack\r
- if(twi_txBufferIndex < twi_txBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_ST_DATA_NACK: // received nack, we are done \r
- case TW_ST_LAST_DATA: // received ack, but we are done already!\r
- // ack future responses\r
- twi_reply(1);\r
- // leave slave receiver state\r
- twi_state = TWI_READY;\r
- break;\r
-\r
- // All\r
- case TW_NO_INFO: // no state information\r
- break;\r
- case TW_BUS_ERROR: // bus error, illegal stop/start\r
- twi_error = TW_BUS_ERROR;\r
- twi_stop();\r
- break;\r
- }\r
-}\r
-\r
+++ /dev/null
-/*
- twi.h - TWI/I2C library for Wiring & Arduino
- Copyright (c) 2006 Nicholas Zambetti. All right reserved.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#ifndef twi_h
-#define twi_h
- #include <inttypes.h>
-
- //#define ATMEGA8
-
- #ifndef TWI_FREQ
- #define TWI_FREQ 100000L
- #endif
-
- #ifndef TWI_BUFFER_LENGTH
- #define TWI_BUFFER_LENGTH 32
- #endif
-
- #define TWI_READY 0
- #define TWI_MRX 1
- #define TWI_MTX 2
- #define TWI_SRX 3
- #define TWI_STX 4
-
- void twi_init(void);
- void twi_disable(void);
- void twi_setAddress(uint8_t);
- void twi_setFrequency(uint32_t);
- uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t);
- uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t);
- uint8_t twi_transmit(const uint8_t*, uint8_t);
- void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );
- void twi_attachSlaveTxEvent( void (*)(void) );
- void twi_reply(uint8_t);
- void twi_stop(void);
- void twi_releaseBus(void);
-
-#endif
-
+++ /dev/null
-/******************************************************************************\r
-SparkFunBME280.cpp\r
-BME280 Arduino and Teensy Driver\r
-Marshall Taylor @ SparkFun Electronics\r
-May 20, 2015\r
-https://github.com/sparkfun/BME280_Breakout\r
-\r
-Resources:\r
-Uses Wire.h for i2c operation\r
-Uses SPI.h for SPI operation\r
-\r
-Development environment specifics:\r
-Arduino IDE 1.6.4\r
-Teensy loader 1.23\r
-\r
-This code is released under the [MIT License](http://opensource.org/licenses/MIT).\r
-Please review the LICENSE.md file included with this example. If you have any questions \r
-or concerns with licensing, please contact techsupport@sparkfun.com.\r
-Distributed as-is; no warranty is given.\r
-******************************************************************************/\r
-//See SparkFunBME280.h for additional topology notes.\r
-\r
-#include "SparkFunBME280.h"\r
-#include "stdint.h"\r
-#include <math.h>\r
-#include "twi.h"\r
-\r
-//****************************************************************************//\r
-//\r
-// Settings and configuration\r
-//\r
-//****************************************************************************//\r
-\r
-//Constructor -- Specifies default configuration\r
-/*BME280::BME280( void )\r
-{\r
- //Construct with these default settings if nothing is specified\r
-\r
- //Select interface mode\r
- settings.commInterface = I2C_MODE; //Can be I2C_MODE, SPI_MODE\r
- //Select address for I2C. Does nothing for SPI\r
- settings.I2CAddress = 0x77; //Ignored for SPI_MODE\r
- //Select CS pin for SPI. Does nothing for I2C\r
- settings.chipSelectPin = 10;\r
- settings.runMode = 0;\r
- settings.tempOverSample = 0;\r
- settings.pressOverSample = 0;\r
- settings.humidOverSample = 0;\r
-\r
-}\r
-*/\r
-\r
-//****************************************************************************//\r
-//\r
-// Configuration section\r
-//\r
-// This uses the stored SensorSettings to start the IMU\r
-// Use statements such as "mySensor.settings.commInterface = SPI_MODE;" to \r
-// configure before calling .begin();\r
-//\r
-//****************************************************************************//\r
-uint8_t InitBME(BME280* bme280){\r
-\r
- uint8_t dataToWrite = 0; //Temporary variable\r
- \r
- //Reading all compensation data, range 0x88:A1, 0xE1:E7\r
- \r
- bme280->calibration.dig_T1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_LSB_REG)));\r
- bme280->calibration.dig_T2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_LSB_REG)));\r
- bme280->calibration.dig_T3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_LSB_REG)));\r
-\r
- bme280->calibration.dig_P1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_LSB_REG)));\r
- bme280->calibration.dig_P2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_LSB_REG)));\r
- bme280->calibration.dig_P3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_LSB_REG)));\r
- bme280->calibration.dig_P4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_LSB_REG)));\r
- bme280->calibration.dig_P5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_LSB_REG)));\r
- bme280->calibration.dig_P6 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_LSB_REG)));\r
- bme280->calibration.dig_P7 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_LSB_REG)));\r
- bme280->calibration.dig_P8 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_LSB_REG)));\r
- bme280->calibration.dig_P9 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_LSB_REG)));\r
-\r
- bme280->calibration.dig_H1 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H1_REG)));\r
- bme280->calibration.dig_H2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_LSB_REG)));\r
- bme280->calibration.dig_H3 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H3_REG)));\r
- bme280->calibration.dig_H4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_MSB_REG) << 4) + (readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) & 0x0F)));\r
- bme280->calibration.dig_H5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H5_MSB_REG) << 4) + ((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) >> 4) & 0x0F)));\r
- bme280->calibration.dig_H6 = ((uint8_t)readRegister(bme280->settings.I2CAddress,BME280_DIG_H6_REG)); \r
-\r
-//Set the oversampling control words.\r
- //config will only be writeable in sleep mode, so first insure that.\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, 0x00);\r
-\r
- \r
- //Set the config word\r
- dataToWrite = (bme280->settings.tStandby << 0x5) & 0xE0;\r
- dataToWrite |= (bme280->settings.filter << 0x02) & 0x1C;\r
- writeRegister(bme280->settings.I2CAddress,BME280_CONFIG_REG, dataToWrite);\r
-\r
- \r
- //Set ctrl_hum first, then ctrl_meas to activate ctrl_hum\r
- dataToWrite = bme280->settings.humidOverSample & 0x07; //all other bits can be ignored\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_HUMIDITY_REG, dataToWrite);\r
-\r
- \r
- //set ctrl_meas\r
- //First, set temp oversampling\r
- dataToWrite = (bme280->settings.tempOverSample << 0x5) & 0xE0;\r
- //Next, pressure oversampling\r
-\r
- dataToWrite |= (bme280->settings.pressOverSample << 0x02) & 0x1C;\r
- //Last, set mode\r
- dataToWrite |= (bme280->settings.runMode) & 0x03;\r
- //Load the byte\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, dataToWrite);\r
-\r
- return readRegister(bme280->settings.I2CAddress,0xD0);\r
-}\r
-\r
-\r
-//Strictly resets. Run .begin() afterwards\r
-void reset( BME280* bme280)\r
-{\r
- writeRegister(bme280->settings.I2CAddress,BME280_RST_REG, 0xB6);\r
- \r
-}\r
-\r
-//****************************************************************************//\r
-//\r
-// Pressure Section\r
-//\r
-//****************************************************************************//\r
-float readFloatPressure( BME280 *bme280)\r
-{\r
-\r
- // Returns pressure in Pa as unsigned 32 bit integer in Q24.8 format (24 integer bits and 8 fractional bits).\r
- // Output value of “24674867” represents 24674867/256 = 96386.2 Pa = 963.862 hPa\r
- int32_t adc_P = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_MSB_REG) << 12) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_LSB_REG) << 4) | ((readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_XLSB_REG) >> 4) & 0x0F);\r
- \r
- int64_t var1, var2, p_acc;\r
- var1 = ((int64_t)bme280->t_fine) - 128000;\r
- var2 = var1 * var1 * (int64_t)bme280->calibration.dig_P6;\r
- var2 = var2 + ((var1 * (int64_t)bme280->calibration.dig_P5)<<17);\r
- var2 = var2 + (((int64_t)bme280->calibration.dig_P4)<<35);\r
- var1 = ((var1 * var1 * (int64_t)bme280->calibration.dig_P3)>>8) + ((var1 * (int64_t)bme280->calibration.dig_P2)<<12);\r
- var1 = (((((int64_t)1)<<47)+var1))*((int64_t)bme280->calibration.dig_P1)>>33;\r
- if (var1 == 0)\r
- {\r
- return 0; // avoid exception caused by division by zero\r
- }\r
- p_acc = 1048576 - adc_P;\r
- p_acc = (((p_acc<<31) - var2)*3125)/var1;\r
- var1 = (((int64_t)bme280->calibration.dig_P9) * (p_acc>>13) * (p_acc>>13)) >> 25;\r
- var2 = (((int64_t)bme280->calibration.dig_P8) * p_acc) >> 19;\r
- p_acc = ((p_acc + var1 + var2) >> 8) + (((int64_t)bme280->calibration.dig_P7)<<4);\r
- \r
- return (float)p_acc / 256.0;\r
- \r
-}\r
-/*\r
-float readFloatAltitudeMeters( BME280* bme280 )\r
-{\r
- float heightOutput = 0;\r
- \r
- heightOutput = ((float)-45846.2)*(pow(((float)readFloatPressure(&bme280)/(float)101325), 0.190263) - (float)1);\r
- return heightOutput;\r
- \r
-}\r
-\r
-float readFloatAltitudeFeet( BME280* bme280 )\r
-{\r
- float heightOutput = 0;\r
- \r
- heightOutput = readFloatAltitudeMeters( &bme280) * 3.28084;\r
- return heightOutput;\r
- \r
-}\r
-*/\r
-//****************************************************************************//\r
-//\r
-// Humidity Section\r
-//\r
-//****************************************************************************//\r
-float readFloatHumidity( BME280* bme280 )\r
-{\r
- \r
- // Returns humidity in %RH as unsigned 32 bit integer in Q22. 10 format (22 integer and 10 fractional bits).\r
- // Output value of “47445” represents 47445/1024 = 46. 333 %RH\r
- int32_t adc_H = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_HUMIDITY_MSB_REG) << 8) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_HUMIDITY_LSB_REG));\r
- \r
- int32_t var1;\r
- var1 = (bme280->t_fine - ((int32_t)76800));\r
- var1 = (((((adc_H << 14) - (((int32_t)bme280->calibration.dig_H4) << 20) - (((int32_t)bme280->calibration.dig_H5) * var1)) +\r
- ((int32_t)16384)) >> 15) * (((((((var1 * ((int32_t)bme280->calibration.dig_H6)) >> 10) * (((var1 * ((int32_t)bme280->calibration.dig_H3)) >> 11) + ((int32_t)32768))) >> 10) + ((int32_t)2097152)) *\r
- ((int32_t)bme280->calibration.dig_H2) + 8192) >> 14));\r
- var1 = (var1 - (((((var1 >> 15) * (var1 >> 15)) >> 7) * ((int32_t)bme280->calibration.dig_H1)) >> 4));\r
- var1 = (var1 < 0 ? 0 : var1);\r
- var1 = (var1 > 419430400 ? 419430400 : var1);\r
-\r
- return (float)(var1>>12) / 1024.0;\r
-\r
-}\r
-\r
-\r
-\r
-//****************************************************************************//\r
-//\r
-// Temperature Section\r
-//\r
-//****************************************************************************//\r
-\r
-float readTempC( BME280* bme280 )\r
-{\r
- // Returns temperature in DegC, resolution is 0.01 DegC. Output value of “5123” equals 51.23 DegC.\r
- // t_fine carries fine temperature as global value\r
-\r
- //get the reading (adc_T);\r
- int32_t adc_T = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_MSB_REG) << 12) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_LSB_REG) << 4) | ((readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_XLSB_REG) >> 4) & 0x0F);\r
-\r
- //By datasheet, calibrate\r
- int64_t var1, var2;\r
-\r
- var1 = ((((adc_T>>3) - ((int32_t)bme280->calibration.dig_T1<<1))) * ((int32_t)bme280->calibration.dig_T2)) >> 11;\r
- var2 = (((((adc_T>>4) - ((int32_t)bme280->calibration.dig_T1)) * ((adc_T>>4) - ((int32_t)bme280->calibration.dig_T1))) >> 12) *\r
- ((int32_t)bme280->calibration.dig_T3)) >> 14;\r
- bme280->t_fine = var1 + var2;\r
- float output = (bme280->t_fine * 5 + 128) >> 8;\r
-\r
- output = output / 100;\r
- \r
- return output;\r
-}\r
-\r
-/*float readTempF( BME280* bme280 )\r
-{\r
- float output = readTempC(&bme280);\r
- output = (output * 9) / 5 + 32;\r
-\r
- return output;\r
-}*/\r
-\r
-//****************************************************************************//\r
-//\r
-// Utility\r
-//\r
-//****************************************************************************//\r
-void readRegisterRegion(uint8_t Addr, uint8_t *outputPointer , uint8_t offset, uint8_t length)\r
-{\r
- //define pointer that will point to the external space\r
- ///uint8_t i = 0;\r
- uint8_t c = 0;\r
- twi_writeTo(Addr,&offset,1,1,true);\r
-\r
- for(int i = 0 ; i<length;i++){\r
- // request bytes from slave device\r
- if (i < length-1){\r
- twi_readFrom(Addr, &c, 1, false);\r
- }else {\r
- twi_readFrom(Addr, &c, 1, true);\r
- }\r
- *outputPointer = c;\r
- outputPointer++;\r
- }\r
-\r
-}\r
-\r
-uint8_t readRegister(uint8_t Addr, uint8_t offset)\r
-{\r
- //Return value\r
- uint8_t result;\r
-\r
- twi_writeTo(Addr, &offset,1,1,true);\r
- twi_readFrom(Addr, &result, 1, true);\r
-\r
- \r
- return result;\r
-}\r
-\r
-int16_t readRegisterInt16(uint8_t Addr, uint8_t offset )\r
-{\r
- uint8_t myBuffer[2];\r
- readRegisterRegion(Addr, myBuffer, offset, 2); //Does memory transfer\r
- int16_t output = (int16_t)myBuffer[0] | (int16_t)(myBuffer[1] << 8);\r
- \r
- return output;\r
-}\r
-\r
-void writeRegister(uint8_t Addr,uint8_t offset, uint8_t dataToWrite)\r
-{\r
- //Write the byte\r
- uint8_t value[2];\r
- value[0]=offset;\r
- value[1]=dataToWrite;\r
- twi_writeTo(Addr,value,2,1,true);\r
-}\r
+++ /dev/null
-#include "main.h"
-#include <util/delay.h>
-#include "twi.h"
-#include <inttypes.h>
-
-enum
- {
- BME280_REGISTER_DIG_T1 = 0x88,
- BME280_REGISTER_DIG_T2 = 0x8A,
- BME280_REGISTER_DIG_T3 = 0x8C,
-
- BME280_REGISTER_DIG_P1 = 0x8E,
- BME280_REGISTER_DIG_P2 = 0x90,
- BME280_REGISTER_DIG_P3 = 0x92,
- BME280_REGISTER_DIG_P4 = 0x94,
- BME280_REGISTER_DIG_P5 = 0x96,
- BME280_REGISTER_DIG_P6 = 0x98,
- BME280_REGISTER_DIG_P7 = 0x9A,
- BME280_REGISTER_DIG_P8 = 0x9C,
- BME280_REGISTER_DIG_P9 = 0x9E,
-
- BME280_REGISTER_DIG_H1 = 0xA1,
- BME280_REGISTER_DIG_H2 = 0xE1,
- BME280_REGISTER_DIG_H3 = 0xE3,
- BME280_REGISTER_DIG_H4 = 0xE4,
- BME280_REGISTER_DIG_H5 = 0xE5,
- BME280_REGISTER_DIG_H6 = 0xE7,
-
- BME280_REGISTER_CHIPID = 0xD0,
- BME280_REGISTER_VERSION = 0xD1,
- BME280_REGISTER_SOFTRESET = 0xE0,
-
- BME280_REGISTER_CAL26 = 0xE1, // R calibration stored in 0xE1-0xF0
-
- BME280_REGISTER_CONTROLHUMID = 0xF2,
- BME280_REGISTER_STATUS = 0XF3,
- BME280_REGISTER_CONTROL = 0xF4,
- BME280_REGISTER_CONFIG = 0xF5,
- BME280_REGISTER_PRESSUREDATA = 0xF7,
- BME280_REGISTER_TEMPDATA = 0xFA,
- BME280_REGISTER_HUMIDDATA = 0xFD
-};
-
-
-
-typedef struct
- {
- uint16_t dig_T1;
- int16_t dig_T2;
- int16_t dig_T3;
-
- uint16_t dig_P1;
- int16_t dig_P2;
- int16_t dig_P3;
- int16_t dig_P4;
- int16_t dig_P5;
- int16_t dig_P6;
- int16_t dig_P7;
- int16_t dig_P8;
- int16_t dig_P9;
-
- uint8_t dig_H1;
- int16_t dig_H2;
- uint8_t dig_H3;
- int16_t dig_H4;
- int16_t dig_H5;
- int8_t dig_H6;
-} bme280_calib_data;
-
-bme280_calib_data _bme280_calib;
-
-void setSampling();
-
-uint8_t InitBME280(uint8_t Addr);
-bool BME280isReadingCalibration(uint8_t Addr);
-void readCoefficients(uint8_t Addr);
-
-
-void write8(uint8_t Addr,uint8_t reg, uint8_t value);
-uint8_t read8(uint8_t Addr, uint8_t reg);
-int16_t readS16(uint8_t Addr, uint8_t reg);
-uint16_t read16(uint8_t Addr, uint8_t reg);
-uint16_t read16_LE(uint8_t Addr, uint8_t reg);
-int16_t readS16_LE(uint8_t Addr, uint8_t reg);
-uint32_t read24(uint8_t Addr, uint8_t reg);
-int32_t readTemperature(uint8_t Addr);
-int64_t readPressure(uint8_t Addr);
-uint32_t readHumidity(uint8_t Addr);
+++ /dev/null
-#include "MagnetSensor.h"
-
-uint8_t InitMagSensor(uint8_t Addr, uint16_t* Tref, float* SensX, float* SensY, float* SensZ)
-{
-
- // Write register command, AH = 0x00, AL = 0x5C, Hall plate spinning rate = DEFAULT, GAIN_SEL = 5(0x60, 0x00, 0x5C, 0x00)
- // Address register, (0x00 << 2)
- uint8_t txBuffer[4] = {0x60,0x00,0x5C,0x00};
- uint8_t status;uint8_t status2;
- uint8_t ReadReg[3];
- uint8_t Gain,Res_x,Res_y,Res_z;
-
-
- txBuffer[0] = 0x60;
- txBuffer[1] = 0x00;
- txBuffer[2] = 0x5C;
- txBuffer[3] = 0x00;
-
- status2 = twi_writeTo(Addr, txBuffer, 4,1, true);
- twi_readFrom(Addr, &status, 1, true);
-
- // Write register command, AH = 0x02, AL = 0xB4, RES for magnetic measurement = 1(0x60, 0x02, 0xB4, 0x08)
- // Address register, (0x02 << 2)
- txBuffer[1] = 0x02;
- txBuffer[2] = 0xB4;
- txBuffer[3] = 0x08;
- twi_writeTo(Addr,txBuffer,4,1,true);
- twi_readFrom(Addr, &status, 1, true);
-
- txBuffer[0] = 0x50;
- txBuffer[1] = 0x90;
- twi_writeTo(Addr,txBuffer,2,1,true);
- twi_readFrom(Addr, ReadReg, 3, true);
- uint16_t T_ref = ReadReg[1]<<8 | ReadReg[2];
- *Tref = T_ref;
-uputsnl("Test51");
- //Read Gain;
- txBuffer[1] = 0x00;
- twi_writeTo(Addr,txBuffer,2,1,true);
- twi_readFrom(Addr, ReadReg, 3, true);
-
- Gain = (ReadReg[2] & 0x70) >>4;
-
- //Read Resolution;
- txBuffer[1] = 0x08; //Read Gain;
- twi_writeTo(Addr,txBuffer,2,1,true);
- twi_readFrom(Addr, ReadReg, 3, true);
-
- Res_x = (ReadReg[1] & 0x6) >>1;
- Res_y = ((ReadReg[1] & 0x1) << 1)|((ReadReg[2] & 0x80) >>7);
- Res_z = (ReadReg[2] & 0x60) >>5;
-
- *SensX = SensitivityXY(Gain,Res_x);
- *SensY = SensitivityXY(Gain,Res_y);
- *SensZ = SensitivityZ(Gain,Res_z);
-
- return status2;
-}
-
-
-void MeasureMagSens(uint8_t Addr, uint16_t Tref, float* SensX, float* SensY, float* SensZ){
- uint8_t MagData[9] = {255,255,255,255,255,255,255,255,255};
- char s[30];
-
- char Num[2];
- sprintf(Num,"%1u",Addr-12);
-
- uint8_t dataTest = 0x3F; // Start Single Measurement
- twi_writeTo(Addr,&dataTest,1,1, true);
-
- uint8_t status_1;
- twi_readFrom(Addr, &status_1, 1, true);
-
- _delay_ms(100);
-
- uint8_t testdata2 = 0x4F;// Read Measured Values
- twi_writeTo(Addr, &testdata2, 1, 1, true);
- twi_readFrom(Addr,MagData, 9, true);
- if (MagData[0] == 3) {
- uint16_t tMag = (uint16_t)( MagData[1] * 256 + MagData[2]);
- int16_t xMag = MagData[3] * 256 + MagData[4];
- int16_t yMag = MagData[5] * 256 + MagData[6];
- int16_t zMag = MagData[7] * 256 + MagData[8];
- int16_t temp_temp = (uint16_t)(tMag) - (uint16_t)(Tref);
- float Temperature = 35.0 + (temp_temp/45.2);
- uputs("M");uputs(Num);uputs("_T ");
- sprintf(s,"%4.2f",Temperature);
- uputsnl(s);
- uputs("M");uputs(Num);uputs("_X ");
- sprintf(s,"%4.3f",((float)xMag*(*SensX))); //muT
- uputsnl(s);
- uputs("M");uputs(Num);uputs("_Y ");
- sprintf(s,"%4.3f",((float)yMag*(*SensY))); //muT
- uputsnl(s);
- uputs("M");uputs(Num);uputs("_Z ");
- sprintf(s,"%4.3f",((float)zMag*(*SensZ))); //muT
- uputsnl(s);
- uputs("ERR Mag ");uputs(Num);uputsnl(" NO"); // ERROR INFORMATION FOR EPICS
- } else {
- uputs("ERR Mag ");uputs(Num);uputsnl(" CONNECTION");
- }
-}
-
-float SensitivityXY(uint8_t Gain, uint8_t Res){
- float Sens =0.805;
- /*if (Gain != 0) {
- for (int i=1; i<=Gain;i++){
- if (i<3) {
- logVal = 1;
- } else if (i<5) {
- logVal = 2;
- } else {
- logVal = 3;
- }
- Sens = roundf((Sens - 0.161/((float)logVal)) * 1000) / 1000;
- }
- sprintf(s,"LOG: %f",Sens);
- uputsnl(s);
- }*/
-
- switch(Gain) {
- case 0: Sens=0.805; break;
- case 1: Sens=0.644; break;
- case 2: Sens=0.483; break;
- case 3: Sens=0.403; break;
- case 4: Sens=0.322; break;
- case 5: Sens=0.268; break;
- case 6: Sens=0.215; break;
- default: Sens=0.161; break;
- }
-
-
- return Sens*(float)pow(2,Res);
-}
-
-float SensitivityZ(uint8_t Gain, uint8_t Res){
- float Sens =0.805;
- switch(Gain) {
- case 0: Sens=1.468; break;
- case 1: Sens=1.174; break;
- case 2: Sens=0.881; break;
- case 3: Sens=0.734; break;
- case 4: Sens=0.587; break;
- case 5: Sens=0.489; break;
- case 6: Sens=0.391; break;
- default: Sens=0.294; break;
- }
-
-
- return Sens*(float)pow(2,Res);
-}
+++ /dev/null
-#include "main.h"
-
-uint8_t InitMagSensor(uint8_t Addr, uint16_t* Tref, float *SensX, float* SensY, float *SensZ);
-void MeasureMagSens(uint8_t Addr, uint16_t Tref, float* SensX, float* SensY, float* SensZ);
-float SensitivityXY(uint8_t Gain, uint8_t Res);
-float SensitivityZ(uint8_t Gain, uint8_t Res);
+++ /dev/null
-# Hey Emacs, this is a -*- makefile -*-\r
-\r
-# AVR-GCC Makefile template, derived from the WinAVR template (which\r
-# is public domain), believed to be neutral to any flavor of "make"\r
-# (GNU make, BSD make, SysV make)\r
-\r
-\r
-MCU = atmega168pa\r
-FORMAT = ihex\r
-TARGET = main\r
-SRC = $(TARGET).c uart/uart.c twi/twi.c MagnetSensor.c\r
-ASRC = \r
-OPT = 2\r
-\r
-# Name of this Makefile (used for "make depend").\r
-MAKEFILE = Makefile\r
-\r
-# Debugging format.\r
-# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.\r
-# AVR (extended) COFF requires stabs, plus an avr-objcopy run.\r
-DEBUG = stabs\r
-\r
-# Compiler flag to set the C Standard level.\r
-# c89 - "ANSI" C\r
-# gnu89 - c89 plus GCC extensions\r
-# c99 - ISO C99 standard (not yet fully implemented)\r
-# gnu99 - c99 plus GCC extensions\r
-CSTANDARD = -std=gnu99\r
-\r
-# Place -D or -U options here\r
-CDEFS = -DF_CPU=16000000\r
-\r
-# Place -I options here\r
-CINCS =\r
-\r
-\r
-CDEBUG = -g$(DEBUG)\r
-CWARN = -Wall -Wstrict-prototypes \r
-CTUNING = -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Wl,--relax\r
-#CEXTRA = -Wa,-adhlns=$(<:.c=.lst)\r
-CFLAGS = $(CDEBUG) $(CDEFS) $(CINCS) -O$(OPT) $(CWARN) $(CSTANDARD) $(CEXTRA) $(CTUNING)\r
-\r
-\r
-#ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs \r
-\r
-\r
-#Additional libraries.\r
-\r
-# Minimalistic printf version\r
-PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min\r
-\r
-# Floating point printf version (requires MATH_LIB = -lm below)\r
-PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt\r
-\r
-PRINTF_LIB = \r
-\r
-# Minimalistic scanf version\r
-SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min\r
-\r
-# Floating point + %[ scanf version (requires MATH_LIB = -lm below)\r
-SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt\r
-\r
-SCANF_LIB = \r
-\r
-MATH_LIB = -lm\r
-\r
-# External memory options\r
-\r
-# 64 KB of external RAM, starting after internal RAM (ATmega128!),\r
-# used for variables (.data/.bss) and heap (malloc()).\r
-#EXTMEMOPTS = -Wl,--section-start,.data=0x801100,--defsym=__heap_end=0x80ffff\r
-\r
-# 64 KB of external RAM, starting after internal RAM (ATmega128!),\r
-# only used for heap (malloc()).\r
-#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff\r
-\r
-EXTMEMOPTS =\r
-\r
-#LDMAP = $(LDFLAGS) -Wl,-Map=$(TARGET).map,--cref\r
-LDFLAGS = $(EXTMEMOPTS) $(LDMAP) $(PRINTF_LIB_FLOAT) $(SCANF_LIB) $(MATH_LIB)\r
-\r
-\r
-# Programming support using avrdude. Settings and variables.\r
-\r
-AVRDUDE_PROGRAMMER = dragon_jtag\r
-AVRDUDE_PORT = usb\r
-\r
-AVRDUDE_WRITE_FLASH = -U flash:w:$(TARGET).hex\r
-#AVRDUDE_WRITE_EEPROM = -U eeprom:w:$(TARGET).eep\r
-\r
-\r
-# Uncomment the following if you want avrdude's erase cycle counter.\r
-# Note that this counter needs to be initialized first using -Yn,\r
-# see avrdude manual.\r
-#AVRDUDE_ERASE_COUNTER = -y\r
-\r
-# Uncomment the following if you do /not/ wish a verification to be\r
-# performed after programming the device.\r
-AVRDUDE_NO_VERIFY = -V\r
-\r
-# Increase verbosity level. Please use this when submitting bug\r
-# reports about avrdude. See <http://savannah.nongnu.org/projects/avrdude> \r
-# to submit bug reports.\r
-#AVRDUDE_VERBOSE = -v -v\r
-\r
-AVRDUDE_BASIC = -p $(MCU) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)\r
-AVRDUDE_FLAGS = $(AVRDUDE_BASIC) $(AVRDUDE_NO_VERIFY) $(AVRDUDE_VERBOSE) $(AVRDUDE_ERASE_COUNTER)\r
-\r
-\r
-CC = avr-gcc\r
-OBJCOPY = avr-objcopy\r
-OBJDUMP = avr-objdump\r
-SIZE = avr-size\r
-NM = avr-nm\r
-AVRDUDE = avrdude\r
-REMOVE = rm -f\r
-MV = mv -f\r
-\r
-# Define all object files.\r
-OBJ = $(SRC:.c=.o) $(ASRC:.S=.o) \r
-\r
-# Define all listing files.\r
-LST = $(ASRC:.S=.lst) $(SRC:.c=.lst)\r
-\r
-# Combine all necessary flags and optional flags.\r
-# Add target processor to flags.\r
-ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS)\r
-ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS)\r
-\r
-\r
-# Default target.\r
-all: build\r
-\r
-build: elf hex eep\r
-\r
-elf: $(TARGET).elf\r
-hex: $(TARGET).hex\r
-eep: $(TARGET).eep\r
-lss: $(TARGET).lss \r
-sym: $(TARGET).sym\r
-\r
-\r
-# Program the device. \r
-program: $(TARGET).hex $(TARGET).eep\r
- $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)\r
-\r
-\r
-size: \r
- $(SIZE) -C --mcu=$(MCU) $(TARGET).elf \r
-\r
-# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.\r
-COFFCONVERT=$(OBJCOPY) --debugging \\r
---change-section-address .data-0x800000 \\r
---change-section-address .bss-0x800000 \\r
---change-section-address .noinit-0x800000 \\r
---change-section-address .eeprom-0x810000 \r
-\r
-\r
-coff: $(TARGET).elf\r
- $(COFFCONVERT) -O coff-avr $(TARGET).elf $(TARGET).cof\r
-\r
-\r
-extcoff: $(TARGET).elf\r
- $(COFFCONVERT) -O coff-ext-avr $(TARGET).elf $(TARGET).cof\r
-\r
-\r
-.SUFFIXES: .elf .hex .eep .lss .sym\r
-\r
-.elf.hex:\r
- $(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@\r
-\r
-.elf.eep:\r
- -$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \\r
- --change-section-lma .eeprom=0 -O $(FORMAT) $< $@\r
-\r
-# Create extended listing file from ELF output file.\r
-.elf.lss:\r
- $(OBJDUMP) -h -S $< > $@\r
-\r
-# Create a symbol table from ELF output file.\r
-.elf.sym:\r
- $(NM) -n $< > $@\r
-\r
-\r
-\r
-# Link: create ELF output file from object files.\r
-$(TARGET).elf: $(OBJ)\r
- $(CC) $(ALL_CFLAGS) $(OBJ) --output $@ $(LDFLAGS)\r
-\r
-\r
-# Compile: create object files from C source files.\r
-.c.o:\r
- $(CC) -c $(ALL_CFLAGS) $< -o $@ \r
-\r
-\r
-# Compile: create assembler files from C source files.\r
-.c.s:\r
- $(CC) -S $(ALL_CFLAGS) $< -o $@\r
-\r
-\r
-# Assemble: create object files from assembler source files.\r
-.S.o:\r
- $(CC) -c $(ALL_ASFLAGS) $< -o $@\r
-\r
-\r
-\r
-# Target: clean project.\r
-clean:\r
- $(REMOVE) $(TARGET).hex $(TARGET).eep $(TARGET).cof $(TARGET).elf \\r
- $(TARGET).map $(TARGET).sym $(TARGET).lss \\r
- $(OBJ) $(LST) $(SRC:.c=.s) $(SRC:.c=.d)\r
-\r
-depend:\r
- if grep '^# DO NOT DELETE' $(MAKEFILE) >/dev/null; \\r
- then \\r
- sed -e '/^# DO NOT DELETE/,$$d' $(MAKEFILE) > \\r
- $(MAKEFILE).$$$$ && \\r
- $(MV) $(MAKEFILE).$$$$ $(MAKEFILE); \\r
- fi\r
- echo '# DO NOT DELETE THIS LINE -- make depend depends on it.' \\r
- >> $(MAKEFILE); \\r
- $(CC) -M -mmcu=$(MCU) $(CDEFS) $(CINCS) $(SRC) $(ASRC) >> $(MAKEFILE)\r
-\r
-.PHONY: all build elf hex eep lss sym program coff extcoff clean depend program_bootloader program_arduino program_leo\r
-\r
-program_bootloader: all\r
- dfu-programmer $(MCU) erase && dfu-programmer $(MCU) flash $(TARGET).hex && dfu-programmer $(MCU) start\r
-\r
-# program_arduino: all\r
-# avrdude -patmega32u4 -cavr109 -P$(PORT) -b 57600 -D -Uflash:w:$(TARGET).hex:i\r
-\r
-program_leo: all\r
- avrdude -patmega32u4 -cavr109 -P/dev/ttyACM0 -b57600 -D -Uflash:w:$(TARGET).hex:i\r
+++ /dev/null
-/******************************************************************************\r
-SparkFunBME280.cpp\r
-BME280 Arduino and Teensy Driver\r
-Marshall Taylor @ SparkFun Electronics\r
-May 20, 2015\r
-https://github.com/sparkfun/BME280_Breakout\r
-\r
-Resources:\r
-Uses Wire.h for i2c operation\r
-Uses SPI.h for SPI operation\r
-\r
-Development environment specifics:\r
-Arduino IDE 1.6.4\r
-Teensy loader 1.23\r
-\r
-This code is released under the [MIT License](http://opensource.org/licenses/MIT).\r
-Please review the LICENSE.md file included with this example. If you have any questions \r
-or concerns with licensing, please contact techsupport@sparkfun.com.\r
-Distributed as-is; no warranty is given.\r
-******************************************************************************/\r
-//See SparkFunBME280.h for additional topology notes.\r
-\r
-#include "SparkFunBME280.h"\r
-#include "stdint.h"\r
-#include <math.h>\r
-#include "twi.h"\r
-\r
-//****************************************************************************//\r
-//\r
-// Settings and configuration\r
-//\r
-//****************************************************************************//\r
-\r
-//Constructor -- Specifies default configuration\r
-/*BME280::BME280( void )\r
-{\r
- //Construct with these default settings if nothing is specified\r
-\r
- //Select interface mode\r
- settings.commInterface = I2C_MODE; //Can be I2C_MODE, SPI_MODE\r
- //Select address for I2C. Does nothing for SPI\r
- settings.I2CAddress = 0x77; //Ignored for SPI_MODE\r
- //Select CS pin for SPI. Does nothing for I2C\r
- settings.chipSelectPin = 10;\r
- settings.runMode = 0;\r
- settings.tempOverSample = 0;\r
- settings.pressOverSample = 0;\r
- settings.humidOverSample = 0;\r
-\r
-}\r
-*/\r
-\r
-//****************************************************************************//\r
-//\r
-// Configuration section\r
-//\r
-// This uses the stored SensorSettings to start the IMU\r
-// Use statements such as "mySensor.settings.commInterface = SPI_MODE;" to \r
-// configure before calling .begin();\r
-//\r
-//****************************************************************************//\r
-uint8_t InitBME(BME280* bme280){\r
-\r
- uint8_t dataToWrite = 0; //Temporary variable\r
- \r
- //Reading all compensation data, range 0x88:A1, 0xE1:E7\r
- \r
- bme280->calibration.dig_T1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_LSB_REG)));\r
- bme280->calibration.dig_T2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_LSB_REG)));\r
- bme280->calibration.dig_T3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_LSB_REG)));\r
-\r
- bme280->calibration.dig_P1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_LSB_REG)));\r
- bme280->calibration.dig_P2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_LSB_REG)));\r
- bme280->calibration.dig_P3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_LSB_REG)));\r
- bme280->calibration.dig_P4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_LSB_REG)));\r
- bme280->calibration.dig_P5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_LSB_REG)));\r
- bme280->calibration.dig_P6 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_LSB_REG)));\r
- bme280->calibration.dig_P7 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_LSB_REG)));\r
- bme280->calibration.dig_P8 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_LSB_REG)));\r
- bme280->calibration.dig_P9 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_LSB_REG)));\r
-\r
- bme280->calibration.dig_H1 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H1_REG)));\r
- bme280->calibration.dig_H2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_LSB_REG)));\r
- bme280->calibration.dig_H3 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H3_REG)));\r
- bme280->calibration.dig_H4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_MSB_REG) << 4) + (readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) & 0x0F)));\r
- bme280->calibration.dig_H5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H5_MSB_REG) << 4) + ((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) >> 4) & 0x0F)));\r
- bme280->calibration.dig_H6 = ((uint8_t)readRegister(bme280->settings.I2CAddress,BME280_DIG_H6_REG)); \r
-\r
-//Set the oversampling control words.\r
- //config will only be writeable in sleep mode, so first insure that.\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, 0x00);\r
-\r
- \r
- //Set the config word\r
- dataToWrite = (bme280->settings.tStandby << 0x5) & 0xE0;\r
- dataToWrite |= (bme280->settings.filter << 0x02) & 0x1C;\r
- writeRegister(bme280->settings.I2CAddress,BME280_CONFIG_REG, dataToWrite);\r
-\r
- \r
- //Set ctrl_hum first, then ctrl_meas to activate ctrl_hum\r
- dataToWrite = bme280->settings.humidOverSample & 0x07; //all other bits can be ignored\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_HUMIDITY_REG, dataToWrite);\r
-\r
- \r
- //set ctrl_meas\r
- //First, set temp oversampling\r
- dataToWrite = (bme280->settings.tempOverSample << 0x5) & 0xE0;\r
- //Next, pressure oversampling\r
-\r
- dataToWrite |= (bme280->settings.pressOverSample << 0x02) & 0x1C;\r
- //Last, set mode\r
- dataToWrite |= (bme280->settings.runMode) & 0x03;\r
- //Load the byte\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, dataToWrite);\r
-\r
- return readRegister(bme280->settings.I2CAddress,0xD0);\r
-}\r
-\r
-uint8_t InitBME280_( BME280* bme280)\r
-{\r
- //Check the settings structure values to determine how to setup the device\r
- uint8_t dataToWrite = 0; //Temporary variable\r
- \r
- //Reading all compensation data, range 0x88:A1, 0xE1:E7\r
- \r
- bme280->calibration.dig_T1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T1_LSB_REG)));\r
- bme280->calibration.dig_T2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T2_LSB_REG)));\r
- bme280->calibration.dig_T3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_T3_LSB_REG)));\r
-\r
- bme280->calibration.dig_P1 = ((uint16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P1_LSB_REG)));\r
- bme280->calibration.dig_P2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P2_LSB_REG)));\r
- bme280->calibration.dig_P3 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P3_LSB_REG)));\r
- bme280->calibration.dig_P4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P4_LSB_REG)));\r
- bme280->calibration.dig_P5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P5_LSB_REG)));\r
- bme280->calibration.dig_P6 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P6_LSB_REG)));\r
- bme280->calibration.dig_P7 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P7_LSB_REG)));\r
- bme280->calibration.dig_P8 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P8_LSB_REG)));\r
- bme280->calibration.dig_P9 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_P9_LSB_REG)));\r
-\r
- bme280->calibration.dig_H1 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H1_REG)));\r
- bme280->calibration.dig_H2 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_MSB_REG) << 8) + readRegister(bme280->settings.I2CAddress,BME280_DIG_H2_LSB_REG)));\r
- bme280->calibration.dig_H3 = ((uint8_t)(readRegister(bme280->settings.I2CAddress,BME280_DIG_H3_REG)));\r
- bme280->calibration.dig_H4 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_MSB_REG) << 4) + (readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) & 0x0F)));\r
- bme280->calibration.dig_H5 = ((int16_t)((readRegister(bme280->settings.I2CAddress,BME280_DIG_H5_MSB_REG) << 4) + ((readRegister(bme280->settings.I2CAddress,BME280_DIG_H4_LSB_REG) >> 4) & 0x0F)));\r
- bme280->calibration.dig_H6 = ((uint8_t)readRegister(bme280->settings.I2CAddress,BME280_DIG_H6_REG));\r
-\r
- //Set the oversampling control words.\r
- //config will only be writeable in sleep mode, so first insure that.\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, 0x00);\r
- \r
- //Set the config word\r
- dataToWrite = (bme280->settings.tStandby << 0x5) & 0xE0;\r
- dataToWrite |= (bme280->settings.filter << 0x02) & 0x1C;\r
- writeRegister(bme280->settings.I2CAddress,BME280_CONFIG_REG, dataToWrite);\r
- \r
- //Set ctrl_hum first, then ctrl_meas to activate ctrl_hum\r
- dataToWrite = bme280->settings.humidOverSample & 0x07; //all other bits can be ignored\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_HUMIDITY_REG, dataToWrite);\r
- \r
- //set ctrl_meas\r
- //First, set temp oversampling\r
- dataToWrite = (bme280->settings.tempOverSample << 0x5) & 0xE0;\r
- //Next, pressure oversampling\r
- dataToWrite |= (bme280->settings.pressOverSample << 0x02) & 0x1C;\r
- //Last, set mode\r
- dataToWrite |= (bme280->settings.runMode) & 0x03;\r
- //Load the byte\r
- writeRegister(bme280->settings.I2CAddress,BME280_CTRL_MEAS_REG, dataToWrite);\r
- \r
- return readRegister(bme280->settings.I2CAddress,0xD0);\r
-}\r
-\r
-//Strictly resets. Run .begin() afterwards\r
-void reset( BME280* bme280)\r
-{\r
- writeRegister(bme280->settings.I2CAddress,BME280_RST_REG, 0xB6);\r
- \r
-}\r
-\r
-//****************************************************************************//\r
-//\r
-// Pressure Section\r
-//\r
-//****************************************************************************//\r
-float readFloatPressure( BME280 *bme280)\r
-{\r
-\r
- // Returns pressure in Pa as unsigned 32 bit integer in Q24.8 format (24 integer bits and 8 fractional bits).\r
- // Output value of “24674867” represents 24674867/256 = 96386.2 Pa = 963.862 hPa\r
- int32_t adc_P = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_MSB_REG) << 12) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_LSB_REG) << 4) | ((readRegister(bme280->settings.I2CAddress,BME280_PRESSURE_XLSB_REG) >> 4) & 0x0F);\r
- \r
- int64_t var1, var2, p_acc;\r
- var1 = ((int64_t)bme280->t_fine) - 128000;\r
- var2 = var1 * var1 * (int64_t)bme280->calibration.dig_P6;\r
- var2 = var2 + ((var1 * (int64_t)bme280->calibration.dig_P5)<<17);\r
- var2 = var2 + (((int64_t)bme280->calibration.dig_P4)<<35);\r
- var1 = ((var1 * var1 * (int64_t)bme280->calibration.dig_P3)>>8) + ((var1 * (int64_t)bme280->calibration.dig_P2)<<12);\r
- var1 = (((((int64_t)1)<<47)+var1))*((int64_t)bme280->calibration.dig_P1)>>33;\r
- if (var1 == 0)\r
- {\r
- return 0; // avoid exception caused by division by zero\r
- }\r
- p_acc = 1048576 - adc_P;\r
- p_acc = (((p_acc<<31) - var2)*3125)/var1;\r
- var1 = (((int64_t)bme280->calibration.dig_P9) * (p_acc>>13) * (p_acc>>13)) >> 25;\r
- var2 = (((int64_t)bme280->calibration.dig_P8) * p_acc) >> 19;\r
- p_acc = ((p_acc + var1 + var2) >> 8) + (((int64_t)bme280->calibration.dig_P7)<<4);\r
- \r
- return (float)p_acc / 256.0;\r
- \r
-}\r
-/*\r
-float readFloatAltitudeMeters( BME280* bme280 )\r
-{\r
- float heightOutput = 0;\r
- \r
- heightOutput = ((float)-45846.2)*(pow(((float)readFloatPressure(&bme280)/(float)101325), 0.190263) - (float)1);\r
- return heightOutput;\r
- \r
-}\r
-\r
-float readFloatAltitudeFeet( BME280* bme280 )\r
-{\r
- float heightOutput = 0;\r
- \r
- heightOutput = readFloatAltitudeMeters( &bme280) * 3.28084;\r
- return heightOutput;\r
- \r
-}\r
-*/\r
-//****************************************************************************//\r
-//\r
-// Humidity Section\r
-//\r
-//****************************************************************************//\r
-float readFloatHumidity( BME280* bme280 )\r
-{\r
- \r
- // Returns humidity in %RH as unsigned 32 bit integer in Q22. 10 format (22 integer and 10 fractional bits).\r
- // Output value of “47445” represents 47445/1024 = 46. 333 %RH\r
- int32_t adc_H = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_HUMIDITY_MSB_REG) << 8) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_HUMIDITY_LSB_REG));\r
- \r
- int32_t var1;\r
- var1 = (bme280->t_fine - ((int32_t)76800));\r
- var1 = (((((adc_H << 14) - (((int32_t)bme280->calibration.dig_H4) << 20) - (((int32_t)bme280->calibration.dig_H5) * var1)) +\r
- ((int32_t)16384)) >> 15) * (((((((var1 * ((int32_t)bme280->calibration.dig_H6)) >> 10) * (((var1 * ((int32_t)bme280->calibration.dig_H3)) >> 11) + ((int32_t)32768))) >> 10) + ((int32_t)2097152)) *\r
- ((int32_t)bme280->calibration.dig_H2) + 8192) >> 14));\r
- var1 = (var1 - (((((var1 >> 15) * (var1 >> 15)) >> 7) * ((int32_t)bme280->calibration.dig_H1)) >> 4));\r
- var1 = (var1 < 0 ? 0 : var1);\r
- var1 = (var1 > 419430400 ? 419430400 : var1);\r
-\r
- return (float)(var1>>12) / 1024.0;\r
-\r
-}\r
-\r
-\r
-\r
-//****************************************************************************//\r
-//\r
-// Temperature Section\r
-//\r
-//****************************************************************************//\r
-\r
-float readTempC( BME280* bme280 )\r
-{\r
- // Returns temperature in DegC, resolution is 0.01 DegC. Output value of “5123” equals 51.23 DegC.\r
- // t_fine carries fine temperature as global value\r
-\r
- //get the reading (adc_T);\r
- int32_t adc_T = ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_MSB_REG) << 12) | ((uint32_t)readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_LSB_REG) << 4) | ((readRegister(bme280->settings.I2CAddress,BME280_TEMPERATURE_XLSB_REG) >> 4) & 0x0F);\r
-\r
- //By datasheet, calibrate\r
- int64_t var1, var2;\r
-\r
- var1 = ((((adc_T>>3) - ((int32_t)bme280->calibration.dig_T1<<1))) * ((int32_t)bme280->calibration.dig_T2)) >> 11;\r
- var2 = (((((adc_T>>4) - ((int32_t)bme280->calibration.dig_T1)) * ((adc_T>>4) - ((int32_t)bme280->calibration.dig_T1))) >> 12) *\r
- ((int32_t)bme280->calibration.dig_T3)) >> 14;\r
- bme280->t_fine = var1 + var2;\r
- float output = (bme280->t_fine * 5 + 128) >> 8;\r
-\r
- output = output / 100;\r
- \r
- return output;\r
-}\r
-\r
-/*float readTempF( BME280* bme280 )\r
-{\r
- float output = readTempC(&bme280);\r
- output = (output * 9) / 5 + 32;\r
-\r
- return output;\r
-}*/\r
-\r
-//****************************************************************************//\r
-//\r
-// Utility\r
-//\r
-//****************************************************************************//\r
-void readRegisterRegion(uint8_t Addr, uint8_t *outputPointer , uint8_t offset, uint8_t length)\r
-{\r
- //define pointer that will point to the external space\r
- ///uint8_t i = 0;\r
- uint8_t c = 0;\r
- twi_writeTo(Addr,&offset,1,1,true);\r
-\r
- for(int i = 0 ; i<length;i++){\r
- // request bytes from slave device\r
- if (i < length-1){\r
- twi_readFrom(Addr, &c, 1, false);\r
- }else {\r
- twi_readFrom(Addr, &c, 1, true);\r
- }\r
- *outputPointer = c;\r
- outputPointer++;\r
- }\r
-\r
-}\r
-\r
-uint8_t readRegister(uint8_t Addr, uint8_t offset)\r
-{\r
- //Return value\r
- uint8_t result;\r
-\r
- twi_writeTo(Addr, &offset,1,1,true);\r
- twi_readFrom(Addr, &result, 1, true);\r
-\r
- \r
- return result;\r
-}\r
-\r
-int16_t readRegisterInt16(uint8_t Addr, uint8_t offset )\r
-{\r
- uint8_t myBuffer[2];\r
- readRegisterRegion(Addr, myBuffer, offset, 2); //Does memory transfer\r
- int16_t output = (int16_t)myBuffer[0] | (int16_t)(myBuffer[1] << 8);\r
- \r
- return output;\r
-}\r
-\r
-void writeRegister(uint8_t Addr,uint8_t offset, uint8_t dataToWrite)\r
-{\r
- //Write the byte\r
- uint8_t value[2];\r
- value[0]=offset;\r
- value[1]=dataToWrite;\r
- twi_writeTo(Addr,value,2,1,true);\r
-}\r
+++ /dev/null
-/******************************************************************************\r
-SparkFunBME280.h\r
-BME280 Arduino and Teensy Driver\r
-Marshall Taylor @ SparkFun Electronics\r
-May 20, 2015\r
-https://github.com/sparkfun/BME280_Breakout\r
-\r
-Resources:\r
-Uses Wire.h for i2c operation\r
-Uses SPI.h for SPI operation\r
-\r
-Development environment specifics:\r
-Arduino IDE 1.6.4\r
-Teensy loader 1.23\r
-\r
-This code is released under the [MIT License](http://opensource.org/licenses/MIT).\r
-Please review the LICENSE.md file included with this example. If you have any questions \r
-or concerns with licensing, please contact techsupport@sparkfun.com.\r
-Distributed as-is; no warranty is given.\r
-******************************************************************************/\r
-\r
-// Test derived class for base class SparkFunIMU\r
-#ifndef __BME280_H__\r
-#define __BME280_H__\r
-\r
-#include "stdint.h"\r
-#include "main.h"\r
-\r
-#define I2C_MODE 0\r
-#define SPI_MODE 1\r
-\r
-//Register names:\r
-#define BME280_DIG_T1_LSB_REG 0x88\r
-#define BME280_DIG_T1_MSB_REG 0x89\r
-#define BME280_DIG_T2_LSB_REG 0x8A\r
-#define BME280_DIG_T2_MSB_REG 0x8B\r
-#define BME280_DIG_T3_LSB_REG 0x8C\r
-#define BME280_DIG_T3_MSB_REG 0x8D\r
-#define BME280_DIG_P1_LSB_REG 0x8E\r
-#define BME280_DIG_P1_MSB_REG 0x8F\r
-#define BME280_DIG_P2_LSB_REG 0x90\r
-#define BME280_DIG_P2_MSB_REG 0x91\r
-#define BME280_DIG_P3_LSB_REG 0x92\r
-#define BME280_DIG_P3_MSB_REG 0x93\r
-#define BME280_DIG_P4_LSB_REG 0x94\r
-#define BME280_DIG_P4_MSB_REG 0x95\r
-#define BME280_DIG_P5_LSB_REG 0x96\r
-#define BME280_DIG_P5_MSB_REG 0x97\r
-#define BME280_DIG_P6_LSB_REG 0x98\r
-#define BME280_DIG_P6_MSB_REG 0x99\r
-#define BME280_DIG_P7_LSB_REG 0x9A\r
-#define BME280_DIG_P7_MSB_REG 0x9B\r
-#define BME280_DIG_P8_LSB_REG 0x9C\r
-#define BME280_DIG_P8_MSB_REG 0x9D\r
-#define BME280_DIG_P9_LSB_REG 0x9E\r
-#define BME280_DIG_P9_MSB_REG 0x9F\r
-#define BME280_DIG_H1_REG 0xA1\r
-#define BME280_CHIP_ID_REG 0xD0 //Chip ID\r
-#define BME280_RST_REG 0xE0 //Softreset Reg\r
-#define BME280_DIG_H2_LSB_REG 0xE1\r
-#define BME280_DIG_H2_MSB_REG 0xE2\r
-#define BME280_DIG_H3_REG 0xE3\r
-#define BME280_DIG_H4_MSB_REG 0xE4\r
-#define BME280_DIG_H4_LSB_REG 0xE5\r
-#define BME280_DIG_H5_MSB_REG 0xE6\r
-#define BME280_DIG_H6_REG 0xE7\r
-#define BME280_CTRL_HUMIDITY_REG 0xF2 //Ctrl Humidity Reg\r
-#define BME280_STAT_REG 0xF3 //Status Reg\r
-#define BME280_CTRL_MEAS_REG 0xF4 //Ctrl Measure Reg\r
-#define BME280_CONFIG_REG 0xF5 //Configuration Reg\r
-#define BME280_PRESSURE_MSB_REG 0xF7 //Pressure MSB\r
-#define BME280_PRESSURE_LSB_REG 0xF8 //Pressure LSB\r
-#define BME280_PRESSURE_XLSB_REG 0xF9 //Pressure XLSB\r
-#define BME280_TEMPERATURE_MSB_REG 0xFA //Temperature MSB\r
-#define BME280_TEMPERATURE_LSB_REG 0xFB //Temperature LSB\r
-#define BME280_TEMPERATURE_XLSB_REG 0xFC //Temperature XLSB\r
-#define BME280_HUMIDITY_MSB_REG 0xFD //Humidity MSB\r
-#define BME280_HUMIDITY_LSB_REG 0xFE //Humidity LSB\r
-\r
-\r
-//Class SensorSettings. This object is used to hold settings data. The application\r
-//uses this classes' data directly. The settings are adopted and sent to the sensor\r
-//at special times, such as .begin. Some are used for doing math.\r
-//\r
-//This is a kind of bloated way to do this. The trade-off is that the user doesn't\r
-//need to deal with #defines or enums with bizarre names.\r
-//\r
-//A power user would strip out SensorSettings entirely, and send specific read and\r
-//write command directly to the IC. (ST #defines below)\r
-//\r
-typedef struct\r
-{\r
- //Main Interface and mode settings\r
- uint8_t commInterface;\r
- uint8_t I2CAddress;\r
- uint8_t chipSelectPin;\r
- \r
- uint8_t runMode;\r
- uint8_t tStandby;\r
- uint8_t filter;\r
- uint8_t tempOverSample;\r
- uint8_t pressOverSample;\r
- uint8_t humidOverSample;\r
-\r
-} SensorSettings;\r
-\r
-//Used to hold the calibration constants. These are used\r
-//by the driver as measurements are being taking\r
-typedef struct\r
-{\r
- uint16_t dig_T1;\r
- int16_t dig_T2;\r
- int16_t dig_T3;\r
- \r
- uint16_t dig_P1;\r
- int16_t dig_P2;\r
- int16_t dig_P3;\r
- int16_t dig_P4;\r
- int16_t dig_P5;\r
- int16_t dig_P6;\r
- int16_t dig_P7;\r
- int16_t dig_P8;\r
- int16_t dig_P9;\r
- \r
- uint8_t dig_H1;\r
- int16_t dig_H2;\r
- uint8_t dig_H3;\r
- int16_t dig_H4;\r
- int16_t dig_H5;\r
- uint8_t dig_H6;\r
- \r
-} SensorCalibration;\r
-\r
-//This is the man operational class of the driver.\r
-\r
-typedef struct {\r
- //settings\r
- SensorSettings settings /*= {.commInterface=0, .I2CAddress = 0xFF, .chipSelectPin=10, .runMode=0, .tempOverSample=0, .pressOverSample=0, .humidOverSample=0}*/;\r
- SensorCalibration calibration;\r
- int32_t t_fine;\r
-} BME280;\r
-\r
- \r
- \r
-uint8_t InitBME(BME280* bme280);\r
- //Software reset routine\r
- void reset( BME280* bme280);\r
- \r
- uint8_t initBME280_( BME280* bme280 );\r
-\r
- //Returns the values as floats.\r
- float readFloatPressure( BME280* bme280 );\r
- //float readFloatAltitudeMeters( BME280* bme280 );\r
- //float readFloatAltitudeFeet( BME280* bme280 );\r
- \r
- float readFloatHumidity( BME280* bme280 );\r
-\r
- //Temperature related methods\r
- float readTempC( BME280* bme280 );\r
- //float readTempF( BME280* bme280 );\r
-\r
- //The following utilities read and write\r
-\r
- //ReadRegisterRegion takes a uint8 array address as input and reads\r
- //a chunk of memory into that array.\r
- void readRegisterRegion(uint8_t Addr, uint8_t*, uint8_t, uint8_t );\r
- //readRegister reads one register\r
- uint8_t readRegister(uint8_t, uint8_t);\r
- //Reads two regs, LSByte then MSByte order, and concatenates them\r
- //Used for two-byte reads\r
- int16_t readRegisterInt16(uint8_t Addr, uint8_t offset );\r
- //Writes a byte;\r
- void writeRegister(uint8_t, uint8_t, uint8_t);\r
- \r
-#endif // End of __BME280_H__ definition check\r
+++ /dev/null
-/*#include <avr/pgmspace.h>
-#include <util/delay.h>
-#include <stdlib.h>
-*/
-#include "TSL2591.h"
-
-void Init_TSL2591(TSL2591* tsl)
-{
- tsl->_initialized = true;
- tsl->_integration = TSL2591_INTEGRATIONTIME_100MS;
- tsl->_gain = TSL2591_GAIN_MED;
- TSL2591_setTiming(tsl, tsl->_integration);
- TSL2591_setGain(tsl, tsl->_gain);
- TSL2591_disable();
-}
-
-
-void TSL2591_enable()
-{
- // Enable the device by setting the control bit to 0x01
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_ENABLE, TSL2591_ENABLE_POWERON | TSL2591_ENABLE_AEN | TSL2591_ENABLE_AIEN | TSL2591_ENABLE_NPIEN);
-}
-
-void TSL2591_disable()
-{
- // Disable the device by setting the control bit to 0x00
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_ENABLE, TSL2591_ENABLE_POWEROFF);
-}
-
-void TSL2591_setGain(TSL2591* tsl, tsl2591Gain_t gain)
-{
- TSL2591_enable();
- tsl->_gain = gain;
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_CONTROL, tsl->_integration | tsl->_gain);
- TSL2591_disable();
-}
-
-tsl2591Gain_t TSL2591_getGain(TSL2591* tsl)
-{
- return tsl->_gain;
-}
-
-void TSL2591_setTiming(TSL2591* tsl, tsl2591IntegrationTime_t integration)
-{
- TSL2591_enable();
- tsl->_integration = integration;
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_CONTROL, tsl->_integration | tsl->_gain);
- TSL2591_disable();
-}
-
-tsl2591IntegrationTime_t TSL2591_getTiming(TSL2591* tsl)
-{
- return tsl->_integration;
-}
-
-uint32_t TSL2591_calculateLux(TSL2591* tsl, uint16_t ch0, uint16_t ch1)
-{
- float atime, again;
- float cpl, lux1, lux2, lux;
- uint32_t chan0, chan1;
-
- // Check for overflow conditions first
- if ((ch0 == 0xFFFF) | (ch1 == 0xFFFF))
- {
- // Signal an overflow
- return 0;
- }
-
- // Note: This algorithm is based on preliminary coefficients
- // provided by AMS and may need to be updated in the future
-
- switch (tsl->_integration)
- {
- case TSL2591_INTEGRATIONTIME_100MS :
- atime = 100.0F;
- break;
- case TSL2591_INTEGRATIONTIME_200MS :
- atime = 200.0F;
- break;
- case TSL2591_INTEGRATIONTIME_300MS :
- atime = 300.0F;
- break;
- case TSL2591_INTEGRATIONTIME_400MS :
- atime = 400.0F;
- break;
- case TSL2591_INTEGRATIONTIME_500MS :
- atime = 500.0F;
- break;
- case TSL2591_INTEGRATIONTIME_600MS :
- atime = 600.0F;
- break;
- default: // 100ms
- atime = 100.0F;
- break;
- }
-
- switch (tsl->_gain)
- {
- case TSL2591_GAIN_LOW :
- again = 1.0F;
- break;
- case TSL2591_GAIN_MED :
- again = 25.0F;
- break;
- case TSL2591_GAIN_HIGH :
- again = 428.0F;
- break;
- case TSL2591_GAIN_MAX :
- again = 9876.0F;
- break;
- default:
- again = 1.0F;
- break;
- }
-
- // cpl = (ATIME * AGAIN) / DF
- cpl = (atime * again) / TSL2591_LUX_DF;
-
- lux1 = ( (float)ch0 - (TSL2591_LUX_COEFB * (float)ch1) ) / cpl;
- lux2 = ( ( TSL2591_LUX_COEFC * (float)ch0 ) - ( TSL2591_LUX_COEFD * (float)ch1 ) ) / cpl;
- lux = lux1 > lux2 ? lux1 : lux2;
-
- // Alternate lux calculation
- //lux = ( (float)ch0 - ( 1.7F * (float)ch1 ) ) / cpl;
-
- // Signal I2C had no errors
- return (uint32_t)lux;
-}
-
-uint32_t TSL2591_getFullLuminosity (TSL2591* tsl)
-{
- // Enable the device
- TSL2591_enable();
-
- // Wait x ms for ADC to complete
- for (uint8_t d=0; d<=tsl->_integration; d++)
- {
- _delay_ms(120);
- }
-
- uint32_t x;
- x = TSL2591_read16(TSL2591_COMMAND_BIT | TSL2591_REGISTER_CHAN1_LOW);
- x <<= 16;
- x |= TSL2591_read16(TSL2591_COMMAND_BIT | TSL2591_REGISTER_CHAN0_LOW);
-
- TSL2591_disable();
-
- return x;
-}
-
-uint16_t TSL2591_getLuminosity (TSL2591* tsl, uint8_t channel)
-{
- uint32_t x = TSL2591_getFullLuminosity(tsl);
-
- if (channel == TSL2591_FULLSPECTRUM)
- {
- // Reads two byte value from channel 0 (visible + infrared)
- return (x & 0xFFFF);
- }
- else if (channel == TSL2591_INFRARED)
- {
- // Reads two byte value from channel 1 (infrared)
- return (x >> 16);
- }
- else if (channel == TSL2591_VISIBLE)
- {
- // Reads all and subtracts out just the visible!
- return ( (x & 0xFFFF) - (x >> 16));
- }
-
- // unknown channel!
- return 0;
-}
-
-/*void TSL2591_registerInterrupt(TSL2591* tsl, uint16_t lowerThreshold, uint16_t upperThreshold)
-{
- if (!tsl->_initialized)
- {
- if (!TSL2591_begin(tsl))
- {
- return;
- }
- }
-
- TSL2591_enable(tsl);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_NPAILTL, lowerThreshold);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_NPAILTH, lowerThreshold >> 8);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_NPAIHTL, upperThreshold);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_NPAIHTH, upperThreshold >> 8);
- TSL2591_disable(tsl);
-}
-
-void TSL2591_registerInterrupt(TSL2591* tsl, uint16_t lowerThreshold, uint16_t upperThreshold, tsl2591Persist_t persist)
-{
- if (!_initialized)
- {
- if (!TSL2591_begin(tsl))
- {
- return;
- }
- }
-
- TSL2591_enable(tsl);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_PERSIST_FILTER, persist);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_AILTL, lowerThreshold);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_AILTH, lowerThreshold >> 8);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_AIHTL, upperThreshold);
- TSL2591_write8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_THRESHOLD_AIHTH, upperThreshold >> 8);
- TSL2591_disable(tsl);
-}
-
-void TSL2591_clearInterrupt(TSL2591* tsl)
-{
- if (!tsl->_initialized)
- {
- if (!TSL2591_begin(tsl))
- {
- return;
- }
- }
-
- TSL2591_enable(tsl);
- TSL2591_write8(TSL2591_CLEAR_INT);
- TSL2591_disable(tsl);
-}
-
-
-uint8_t Adafruit_TSL2591_getStatus(TSL2591* tsl)
-{
- if (!tsl->_initialized)
- {
- if (!TSL2591_begin(tsl))
- {
- return 0;
- }
- }
-
- // Enable the device
- TSL2591_enable(tsl);
- uint8_t x;
- x = TSL2591_read8(TSL2591_COMMAND_BIT | TSL2591_REGISTER_DEVICE_STATUS);
- TSL2591_disable(tsl);
- return x;
-}
-*/
-
-uint8_t TSL2591_read8(uint8_t reg)
-{
- uint8_t x;
- twi_writeTo(TSL2591_ADDR, ®, 1,1, true);
- twi_readFrom(TSL2591_ADDR, &x, 1, true);
-
- return x;
-}
-
-uint16_t TSL2591_read16(uint8_t reg)
-{
- uint16_t x[2];
-
- twi_writeTo(TSL2591_ADDR, ®, 1,1, true);
- twi_readFrom(TSL2591_ADDR, x, 2, true);
-
- x[1] <<= 8;
- x[1] |= x[0];
- return x;
-}
-
-void TSL2591_write8 (uint8_t reg, uint8_t value)
-{
- uint8_t write_val[2] = {reg, value};
- twi_writeTo(TSL2591_ADDR, reg, 2,1, true);
-}
-
-
+++ /dev/null
-#include "main.h"
-
-#ifndef _TSL2591_H_
-#define _TSL2591_H_
-
-#define TSL2591_VISIBLE (2) // channel 0 - channel 1
-#define TSL2591_INFRARED (1) // channel 1
-#define TSL2591_FULLSPECTRUM (0) // channel 0
-
-#define TSL2591_ADDR (0x29)
-#define TSL2591_READBIT (0x01)
-
-#define TSL2591_COMMAND_BIT (0xA0) // 1010 0000: bits 7 and 5 for 'command normal'
-#define TSL2591_CLEAR_INT (0xE7)
-#define TSL2591_TEST_INT (0xE4)
-#define TSL2591_WORD_BIT (0x20) // 1 = read/write word (rather than byte)
-#define TSL2591_BLOCK_BIT (0x10) // 1 = using block read/write
-
-#define TSL2591_ENABLE_POWEROFF (0x00)
-#define TSL2591_ENABLE_POWERON (0x01)
-#define TSL2591_ENABLE_AEN (0x02) // ALS Enable. This field activates ALS function. Writing a one activates the ALS. Writing a zero disables the ALS.
-#define TSL2591_ENABLE_AIEN (0x10) // ALS Interrupt Enable. When asserted permits ALS interrupts to be generated, subject to the persist filter.
-#define TSL2591_ENABLE_NPIEN (0x80) // No Persist Interrupt Enable. When asserted NP Threshold conditions will generate an interrupt, bypassing the persist filter
-
-#define TSL2591_LUX_DF (408.0F)
-#define TSL2591_LUX_COEFB (1.64F) // CH0 coefficient
-#define TSL2591_LUX_COEFC (0.59F) // CH1 coefficient A
-#define TSL2591_LUX_COEFD (0.86F) // CH2 coefficient B
-
-enum
-{
- TSL2591_REGISTER_ENABLE = 0x00,
- TSL2591_REGISTER_CONTROL = 0x01,
- TSL2591_REGISTER_THRESHOLD_AILTL = 0x04, // ALS low threshold lower byte
- TSL2591_REGISTER_THRESHOLD_AILTH = 0x05, // ALS low threshold upper byte
- TSL2591_REGISTER_THRESHOLD_AIHTL = 0x06, // ALS high threshold lower byte
- TSL2591_REGISTER_THRESHOLD_AIHTH = 0x07, // ALS high threshold upper byte
- TSL2591_REGISTER_THRESHOLD_NPAILTL = 0x08, // No Persist ALS low threshold lower byte
- TSL2591_REGISTER_THRESHOLD_NPAILTH = 0x09, // etc
- TSL2591_REGISTER_THRESHOLD_NPAIHTL = 0x0A,
- TSL2591_REGISTER_THRESHOLD_NPAIHTH = 0x0B,
- TSL2591_REGISTER_PERSIST_FILTER = 0x0C,
- TSL2591_REGISTER_PACKAGE_PID = 0x11,
- TSL2591_REGISTER_DEVICE_ID = 0x12,
- TSL2591_REGISTER_DEVICE_STATUS = 0x13,
- TSL2591_REGISTER_CHAN0_LOW = 0x14,
- TSL2591_REGISTER_CHAN0_HIGH = 0x15,
- TSL2591_REGISTER_CHAN1_LOW = 0x16,
- TSL2591_REGISTER_CHAN1_HIGH = 0x17
-};
-
-typedef enum
-{
- TSL2591_INTEGRATIONTIME_100MS = 0x00,
- TSL2591_INTEGRATIONTIME_200MS = 0x01,
- TSL2591_INTEGRATIONTIME_300MS = 0x02,
- TSL2591_INTEGRATIONTIME_400MS = 0x03,
- TSL2591_INTEGRATIONTIME_500MS = 0x04,
- TSL2591_INTEGRATIONTIME_600MS = 0x05,
-}
-tsl2591IntegrationTime_t;
-
-typedef enum
-{
- // bit 7:4: 0
- TSL2591_PERSIST_EVERY = 0x00, // Every ALS cycle generates an interrupt
- TSL2591_PERSIST_ANY = 0x01, // Any value outside of threshold range
- TSL2591_PERSIST_2 = 0x02, // 2 consecutive values out of range
- TSL2591_PERSIST_3 = 0x03, // 3 consecutive values out of range
- TSL2591_PERSIST_5 = 0x04, // 5 consecutive values out of range
- TSL2591_PERSIST_10 = 0x05, // 10 consecutive values out of range
- TSL2591_PERSIST_15 = 0x06, // 15 consecutive values out of range
- TSL2591_PERSIST_20 = 0x07, // 20 consecutive values out of range
- TSL2591_PERSIST_25 = 0x08, // 25 consecutive values out of range
- TSL2591_PERSIST_30 = 0x09, // 30 consecutive values out of range
- TSL2591_PERSIST_35 = 0x0A, // 35 consecutive values out of range
- TSL2591_PERSIST_40 = 0x0B, // 40 consecutive values out of range
- TSL2591_PERSIST_45 = 0x0C, // 45 consecutive values out of range
- TSL2591_PERSIST_50 = 0x0D, // 50 consecutive values out of range
- TSL2591_PERSIST_55 = 0x0E, // 55 consecutive values out of range
- TSL2591_PERSIST_60 = 0x0F, // 60 consecutive values out of range
-}
-tsl2591Persist_t;
-
-typedef enum
-{
- TSL2591_GAIN_LOW = 0x00, // low gain (1x)
- TSL2591_GAIN_MED = 0x10, // medium gain (25x)
- TSL2591_GAIN_HIGH = 0x20, // medium gain (428x)
- TSL2591_GAIN_MAX = 0x30, // max gain (9876x)
-}
-tsl2591Gain_t;
-
-typedef struct {
- tsl2591Gain_t _gain;
- tsl2591IntegrationTime_t _integration;
- bool _initialized;
-} TSL2591;
-
-
- void Init_TSL2591 ( TSL2591* tsl );
-
- void TSL2591_enable ( void );
- void TSL2591_disable ( void );
- void TSL2591_write8 ( uint8_t r, uint8_t v );
- uint16_t TSL2591_read16 ( uint8_t reg );
- uint8_t TSL2591_read8 ( uint8_t reg );
-
- uint32_t TSL2591_calculateLux (TSL2591* tsl, uint16_t ch0, uint16_t ch1 );
- void TSL2591_setGain (TSL2591* tsl, tsl2591Gain_t gain );
- void TSL2591_setTiming (TSL2591* tsl, tsl2591IntegrationTime_t integration );
- uint16_t TSL2591_getLuminosity (TSL2591* tsl, uint8_t channel );
- uint32_t TSL2591_getFullLuminosity (TSL2591* tsl );
-
- tsl2591IntegrationTime_t TSL2591_getTiming(TSL2591* tsl);
- tsl2591Gain_t TSL2591_getGain(TSL2591* tsl);
-
-
-#endif
-
+++ /dev/null
-/*\r
- * main.c\r
- *\r
- * Created on: 07.03.2017\r
- * Author: Adrian Weber\r
- */\r
-#include "main.h"\r
-\r
-\r
-int main(void)\r
-{ char s[30];\r
- uint8_t Status[4]={0,0,0,0};\r
- uint8_t Status_Mag[4]={0,0,0,0};\r
- uint16_t TRef[4]={0,0,0,0};\r
- float SensX[4];\r
- float SensY[4];\r
- float SensZ[4];\r
- \r
- //For CLK setting\r
- CLKPR = (0<<CLKPCE); // No prescale\r
- CLKPR = 0x00; //prescaler 2\r
- PRR = 0;\r
- //Init UART\r
- uinit();\r
-\r
- //Init I2C/TWI\r
- twi_init();\r
-\r
- //Init Magnetic field Sensor\r
- Status[0] = InitMagSensor(ADDR_MAG_0, &TRef[0], &SensX[0], &SensY[0], &SensZ[0]);\r
- Status[1] = InitMagSensor(ADDR_MAG_1, &TRef[1], &SensX[1], &SensY[1], &SensZ[1]);\r
- Status[2] = InitMagSensor(ADDR_MAG_2, &TRef[2], &SensX[2], &SensY[2], &SensZ[2]);\r
- Status[3] = InitMagSensor(ADDR_MAG_3, &TRef[3], &SensX[3], &SensY[3], &SensZ[3]);\r
-\r
- // sprintf(s,"%u", Status[0]);\r
- //uputs(s);\r
- _delay_ms(300);\r
-\r
- while (1)\r
- { \r
- /*if (Status[0] == 0) { */MeasureMagSens(ADDR_MAG_0, TRef[0], &SensX[0], &SensY[0], &SensZ[0]);/*}\r
- else { uputsnl("ERR Mag 0 NO_DEVICE"); }\r
- if (Status[1] == 0) { MeasureMagSens(ADDR_MAG_1, TRef[1], &SensX[1], &SensY[1], &SensZ[1]);}\r
- else { uputsnl("ERR Mag 1 NO_DEVICE"); }\r
- if (Status[2] == 0) { MeasureMagSens(ADDR_MAG_2, TRef[2], &SensX[2], &SensY[2], &SensZ[2]);}\r
- else { uputsnl("ERR Mag 2 NO_DEVICE"); }\r
- if (Status[3] == 0) { MeasureMagSens(ADDR_MAG_3, TRef[3], &SensX[3], &SensY[3], &SensZ[3]);}\r
- else { uputsnl("ERR Mag 3 NO_DEVICE"); }*/\r
-\r
- _delay_ms(500);\r
-\r
- }\r
- cli();\r
- return 0;\r
-}\r
-\r
+++ /dev/null
-/*\r
- * main.h\r
- *\r
- * Created on: 07.03.2017\r
- * Author: Adrian Weber\r
- */\r
-\r
-#ifndef MAIN_H_\r
-#define MAIN_H_\r
-\r
-#include <avr/io.h>\r
-#include <util/delay.h>\r
-#include <string.h>\r
-#include <stdlib.h>\r
-#include <stdio.h>\r
-#include <stdint.h>\r
-#include <stdbool.h>\r
-#include <inttypes.h>\r
-#include <math.h>\r
-#include "uart/uart.h"\r
-#include "MagnetSensor.h"\r
-#include "twi/twi.h"\r
-#include <avr/interrupt.h>\r
-#include <avr/pgmspace.h>\r
-\r
-\r
-#ifndef F_CPU\r
-#define F_CPU 16000000\r
-#endif\r
-\r
-# define USART_BAUDRATE 19200\r
-# define BAUD_PRESCALE (unsigned int)(1.0 * F_CPU / USART_BAUDRATE / 16 - 0.5);\r
-\r
-#define ADDR_MAG_0 0x0C\r
-#define ADDR_MAG_1 0x0D\r
-#define ADDR_MAG_2 0x0E\r
-#define ADDR_MAG_3 0x0F\r
-\r
-\r
-\r
-\r
-#ifndef __AVR_ATmega168PA__\r
-#define __AVR_ATmega168PA__\r
-#endif /* MAIN_H_ */\r
-\r
-\r
-#endif\r
+++ /dev/null
-/*\r
- twi.c - TWI/I2C library for Atmega32U4\r
-\r
- Copyright (c) 2006 Nicholas Zambetti. All right reserved.\r
-\r
- This library is free software; you can redistribute it and/or\r
- modify it under the terms of the GNU Lesser General Public\r
- License as published by the Free Software Foundation; either\r
- version 2.1 of the License, or (at your option) any later version.\r
-\r
- This library is distributed in the hope that it will be useful,\r
- but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r
- Lesser General Public License for more details.\r
-\r
- You should have received a copy of the GNU Lesser General Public\r
- License along with this library; if not, write to the Free Software\r
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\r
-\r
- Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts\r
-\r
- Modified 2017 by Adrian Weber to use I2C without Arduino librarys\r
-*/\r
-\r
-#include <math.h>\r
-#include <stdlib.h>\r
-#include <inttypes.h>\r
-#include <avr/io.h>\r
-#include <avr/interrupt.h>\r
-#include <compat/twi.h>\r
-#include <stdbool.h>\r
-#include "uart.h"\r
-\r
-#ifndef cbi\r
-#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))\r
-#endif\r
-\r
-#ifndef sbi\r
-#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))\r
-#endif\r
-#include "twi.h"\r
-\r
-static volatile uint8_t twi_state;\r
-static volatile uint8_t twi_slarw;\r
-static volatile uint8_t twi_sendStop; // should the transaction end with a stop\r
-static volatile uint8_t twi_inRepStart; // in the middle of a repeated start\r
-\r
-static void (*twi_onSlaveTransmit)(void);\r
-static void (*twi_onSlaveReceive)(uint8_t*, int);\r
-\r
-static uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_masterBufferIndex;\r
-static volatile uint8_t twi_masterBufferLength;\r
-\r
-static uint8_t twi_txBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_txBufferIndex;\r
-static volatile uint8_t twi_txBufferLength;\r
-\r
-static uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_rxBufferIndex;\r
-\r
-static volatile uint8_t twi_error;\r
-\r
-\r
-/* \r
- * Function twi_init\r
- * Desc readys twi pins and sets twi bitrate\r
- * Input none\r
- * Output none\r
- */\r
-void twi_init(void)\r
-{\r
- // initialize state\r
- twi_state = TWI_READY;\r
- twi_sendStop = true; // default value\r
- twi_inRepStart = false;\r
- \r
- // activate internal pullups for twi.\r
- DDRD |= (1 << PD0);\r
- DDRD |= (1 << PD1);\r
- PORTD |= (1 << PD0);\r
- PORTD |= (1 << PD1);\r
-\r
- // initialize twi prescaler and bit rate\r
- cbi(TWSR, TWPS0);\r
- cbi(TWSR, TWPS1);\r
- TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;\r
-\r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-\r
- // enable twi module, acks, and twi interrupt\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA);\r
-}\r
-\r
-/* \r
- * Function twi_disable\r
- * Desc disables twi pins\r
- * Input none\r
- * Output none\r
- */\r
-void twi_disable(void)\r
-{\r
- // disable twi module, acks, and twi interrupt\r
- TWCR &= ~(_BV(TWEN) | _BV(TWIE) | _BV(TWEA));\r
-\r
- // deactivate internal pullups for twi.\r
- DDRD |= (1 << PD0);\r
- DDRD |= (1 << PD1);\r
- PORTD |= (0 << PD0);\r
- PORTD |= (0 << PD1);\r
-\r
-}\r
-\r
-/* \r
- * Function twi_slaveInit\r
- * Desc sets slave address and enables interrupt\r
- * Input none\r
- * Output none\r
- */\r
-void twi_setAddress(uint8_t address)\r
-{\r
- // set twi slave address (skip over TWGCE bit)\r
- TWAR = address << 1;\r
-}\r
-\r
-/* \r
- * Function twi_setClock\r
- * Desc sets twi bit rate\r
- * Input Clock Frequency\r
- * Output none\r
- */\r
-void twi_setFrequency(uint32_t frequency)\r
-{\r
- TWBR = ((F_CPU / frequency) - 16) / 2;\r
- \r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-}\r
-\r
-/* \r
- * Function twi_readFrom\r
- * Desc attempts to become twi bus master and read a\r
- * series of bytes from a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes to read into array\r
- * sendStop: Boolean indicating whether to send a stop at the end\r
- * Output number of bytes read\r
- */\r
-uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 0;\r
- }\r
- // wait until twi is ready, become master receiver\r
- while(TWI_READY != twi_state){\r
- continue;\r
- } \r
- twi_state = TWI_MRX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length-1; // This is not intuitive, read on...\r
- // On receive, the previously configured ACK/NACK setting is transmitted in\r
- // response to the received byte before the interrupt is signalled. \r
- // Therefor we must actually set NACK when the _next_ to last byte is\r
- // received, causing that NACK to be sent in response to receiving the last\r
- // expected byte of data.\r
-\r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_READ;\r
- twi_slarw |= address << 1;\r
-\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent ourselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw;\r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTA);\r
-\r
- // wait for read operation to complete\r
- while(TWI_MRX == twi_state){\r
- continue;\r
- }\r
-\r
- if (twi_masterBufferIndex < length)\r
- length = twi_masterBufferIndex;\r
-\r
- // copy twi buffer to data\r
- for(i = 0; i < length; ++i){\r
- data[i] = twi_masterBuffer[i];\r
- }\r
- \r
- return length;\r
-}\r
-\r
-/* \r
- * Function twi_writeTo\r
- * Desc attempts to become twi bus master and write a\r
- * series of bytes to a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes in array\r
- * wait: boolean indicating to wait for write or not\r
- * sendStop: boolean indicating whether or not to send a stop at the end\r
- * Output 0 .. success\r
- * 1 .. length to long for buffer\r
- * 2 .. address send, NACK received\r
- * 3 .. data send, NACK received\r
- * 4 .. other twi error (lost bus arbitration, bus error, ..)\r
- */\r
-uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
-\r
- // wait until twi is ready, become master transmitter\r
- while(TWI_READY != twi_state){\r
- continue;\r
- }\r
- twi_state = TWI_MTX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length;\r
- \r
- // copy data to twi buffer\r
- for(i = 0; i < length; ++i){\r
- twi_masterBuffer[i] = data[i];\r
- }\r
- \r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_WRITE;\r
- twi_slarw |= address << 1;\r
- \r
-\r
- // if we're in a repeated start, then we've already sent the START\r
- // in the ISR. Don't do it again.\r
- //\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent outselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw; \r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE) | _BV(TWSTA); // enable INTs\r
-\r
-\r
- // wait for write operation to complete\r
- while(wait && (TWI_MTX == twi_state)){\r
- continue;\r
- }\r
-\r
- if (twi_error == 0xFF)\r
- return 0; // success\r
- else if (twi_error == TW_MT_SLA_NACK)\r
- return 2; // error: address send, nack received\r
- else if (twi_error == TW_MT_DATA_NACK)\r
- return 3; // error: data send, nack received\r
- else\r
- return 4; // other twi error\r
-}\r
-\r
-/* \r
- * Function twi_transmit\r
- * Desc fills slave tx buffer with data\r
- * must be called in slave tx event callback\r
- * Input data: pointer to byte array\r
- * length: number of bytes in array\r
- * Output 1 length too long for buffer\r
- * 2 not slave transmitter\r
- * 0 ok\r
- */\r
-uint8_t twi_transmit(const uint8_t* data, uint8_t length)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
- \r
- // ensure we are currently a slave transmitter\r
- if(TWI_STX != twi_state){\r
- return 2;\r
- }\r
- \r
- // set length and copy data into tx buffer\r
- twi_txBufferLength = length;\r
- for(i = 0; i < length; ++i){\r
- twi_txBuffer[i] = data[i];\r
- }\r
- \r
- return 0;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveRxEvent\r
- * Desc sets function called before a slave read operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveRxEvent( void (*function)(uint8_t*, int) )\r
-{\r
- twi_onSlaveReceive = function;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveTxEvent\r
- * Desc sets function called before a slave write operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveTxEvent( void (*function)(void) )\r
-{\r
- twi_onSlaveTransmit = function;\r
-}\r
-\r
-/* \r
- * Function twi_reply\r
- * Desc sends byte or readys receive line\r
- * Input ack: byte indicating to ack or to nack\r
- * Output none\r
- */\r
-void twi_reply(uint8_t ack)\r
-{\r
- // transmit master read ready signal, with or without ack\r
- if(ack){\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT) | _BV(TWEA);\r
- }else{\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT);\r
- }\r
-}\r
-\r
-/* \r
- * Function twi_stop\r
- * Desc relinquishes bus master status\r
- * Input none\r
- * Output none\r
- */\r
-void twi_stop(void)\r
-{\r
- // send stop condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO);\r
-\r
- // wait for stop condition to be exectued on bus\r
- // TWINT is not set after a stop condition!\r
- while(TWCR & _BV(TWSTO)){\r
- continue;\r
- }\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-/* \r
- * Function twi_releaseBus\r
- * Desc releases bus control\r
- * Input none\r
- * Output none\r
- */\r
-void twi_releaseBus(void)\r
-{\r
- // release bus\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT);\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-ISR(TWI_vect)\r
-{\r
- switch(TW_STATUS){\r
- // All Master\r
- case TW_START: // sent start condition\r
- case TW_REP_START: // sent repeated start condition\r
- // copy device address and r/w bit to output register and ack\r
- TWDR = twi_slarw;\r
- twi_reply(1);\r
- break;\r
-\r
- // Master Transmitter\r
- case TW_MT_SLA_ACK: // slave receiver acked address\r
- case TW_MT_DATA_ACK: // slave receiver acked data\r
- // if there is data to send, send it, otherwise stop \r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- // copy data to output register and ack\r
- TWDR = twi_masterBuffer[twi_masterBufferIndex++];\r
- twi_reply(1);\r
- }else{\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- }\r
- }\r
- break;\r
- case TW_MT_SLA_NACK: // address sent, nack received\r
- twi_error = TW_MT_SLA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_DATA_NACK: // data sent, nack received\r
- twi_error = TW_MT_DATA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_ARB_LOST: // lost bus arbitration\r
- twi_error = TW_MT_ARB_LOST;\r
- twi_releaseBus();\r
- break;\r
-\r
- // Master Receiver\r
- case TW_MR_DATA_ACK: // data received, ack sent\r
- // put byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- case TW_MR_SLA_ACK: // address sent, ack received\r
- // ack if more bytes are expected, otherwise nack\r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_MR_DATA_NACK: // data received, nack sent\r
- // put final byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- } \r
- break;\r
- case TW_MR_SLA_NACK: // address sent, nack received\r
- twi_stop();\r
- break;\r
- // TW_MR_ARB_LOST handled by TW_MT_ARB_LOST case\r
-\r
- // Slave Receiver\r
- case TW_SR_SLA_ACK: // addressed, returned ack\r
- case TW_SR_GCALL_ACK: // addressed generally, returned ack\r
- case TW_SR_ARB_LOST_SLA_ACK: // lost arbitration, returned ack\r
- case TW_SR_ARB_LOST_GCALL_ACK: // lost arbitration, returned ack\r
- // enter slave receiver mode\r
- twi_state = TWI_SRX;\r
- // indicate that rx buffer can be overwritten and ack\r
- twi_rxBufferIndex = 0;\r
- twi_reply(1);\r
- break;\r
- case TW_SR_DATA_ACK: // data received, returned ack\r
- case TW_SR_GCALL_DATA_ACK: // data received generally, returned ack\r
- // if there is still room in the rx buffer\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- // put byte in buffer and ack\r
- twi_rxBuffer[twi_rxBufferIndex++] = TWDR;\r
- twi_reply(1);\r
- }else{\r
- // otherwise nack\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_SR_STOP: // stop or repeated start condition received\r
- // ack future responses and leave slave receiver state\r
- twi_releaseBus();\r
- // put a null char after data if there's room\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- twi_rxBuffer[twi_rxBufferIndex] = '\0';\r
- }\r
- // callback to user defined callback\r
- twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);\r
- // since we submit rx buffer to "wire" library, we can reset it\r
- twi_rxBufferIndex = 0;\r
- break;\r
- case TW_SR_DATA_NACK: // data received, returned nack\r
- case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack\r
- // nack back at master\r
- twi_reply(0);\r
- break;\r
- \r
- // Slave Transmitter\r
- case TW_ST_SLA_ACK: // addressed, returned ack\r
- case TW_ST_ARB_LOST_SLA_ACK: // arbitration lost, returned ack\r
- // enter slave transmitter mode\r
- twi_state = TWI_STX;\r
- // ready the tx buffer index for iteration\r
- twi_txBufferIndex = 0;\r
- // set tx buffer length to be zero, to verify if user changes it\r
- twi_txBufferLength = 0;\r
- // request for txBuffer to be filled and length to be set\r
- // note: user must call twi_transmit(bytes, length) to do this\r
- twi_onSlaveTransmit();\r
- // if they didn't change buffer & length, initialize it\r
- if(0 == twi_txBufferLength){\r
- twi_txBufferLength = 1;\r
- twi_txBuffer[0] = 0x00;\r
- }\r
- // transmit first byte from buffer, fall\r
- case TW_ST_DATA_ACK: // byte sent, ack returned\r
- // copy data to output register\r
- TWDR = twi_txBuffer[twi_txBufferIndex++];\r
- // if there is more to send, ack, otherwise nack\r
- if(twi_txBufferIndex < twi_txBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_ST_DATA_NACK: // received nack, we are done \r
- case TW_ST_LAST_DATA: // received ack, but we are done already!\r
- // ack future responses\r
- twi_reply(1);\r
- // leave slave receiver state\r
- twi_state = TWI_READY;\r
- break;\r
-\r
- // All\r
- case TW_NO_INFO: // no state information\r
- break;\r
- case TW_BUS_ERROR: // bus error, illegal stop/start\r
- twi_error = TW_BUS_ERROR;\r
- twi_stop();\r
- break;\r
- }\r
-}\r
-\r
+++ /dev/null
-/*\r
- twi.c - TWI/I2C library for Atmega32U4\r
-\r
- Copyright (c) 2006 Nicholas Zambetti. All right reserved.\r
-\r
- This library is free software; you can redistribute it and/or\r
- modify it under the terms of the GNU Lesser General Public\r
- License as published by the Free Software Foundation; either\r
- version 2.1 of the License, or (at your option) any later version.\r
-\r
- This library is distributed in the hope that it will be useful,\r
- but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\r
- Lesser General Public License for more details.\r
-\r
- You should have received a copy of the GNU Lesser General Public\r
- License along with this library; if not, write to the Free Software\r
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\r
-\r
- Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts\r
-\r
- Modified 2017 by Adrian Weber to use I2C without Arduino librarys\r
-*/\r
-\r
-#include <math.h>\r
-#include <stdlib.h>\r
-#include <inttypes.h>\r
-#include <avr/io.h>\r
-#include <avr/interrupt.h>\r
-#include <compat/twi.h>\r
-#include <stdbool.h>\r
-\r
-#ifndef cbi\r
-#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))\r
-#endif\r
-\r
-#ifndef sbi\r
-#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))\r
-#endif\r
-#include "twi.h"\r
-\r
-static volatile uint8_t twi_state;\r
-static volatile uint8_t twi_slarw;\r
-static volatile uint8_t twi_sendStop; // should the transaction end with a stop\r
-static volatile uint8_t twi_inRepStart; // in the middle of a repeated start\r
-\r
-static void (*twi_onSlaveTransmit)(void);\r
-static void (*twi_onSlaveReceive)(uint8_t*, int);\r
-\r
-static uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_masterBufferIndex;\r
-static volatile uint8_t twi_masterBufferLength;\r
-\r
-static uint8_t twi_txBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_txBufferIndex;\r
-static volatile uint8_t twi_txBufferLength;\r
-\r
-static uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH];\r
-static volatile uint8_t twi_rxBufferIndex;\r
-\r
-static volatile uint8_t twi_error;\r
-\r
-\r
-/* \r
- * Function twi_init\r
- * Desc readys twi pins and sets twi bitrate\r
- * Input none\r
- * Output none\r
- */\r
-void twi_init(void)\r
-{\r
- // initialize state\r
- twi_state = TWI_READY;\r
- twi_sendStop = true; // default value\r
- twi_inRepStart = false;\r
- \r
- // activate internal pullups for twi.\r
- DDRD |= (1 << PC4);\r
- DDRD |= (1 << PC5);\r
- PORTD |= (1 << PC4);\r
- PORTD |= (1 << PC5);\r
-\r
- // initialize twi prescaler and bit rate\r
- cbi(TWSR, TWPS0);\r
- cbi(TWSR, TWPS1);\r
- TWBR = ((F_CPU / TWI_FREQ) - 16) / 2;\r
-\r
- sei();\r
-\r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-\r
- // enable twi module, acks, and twi interrupt\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA);\r
-}\r
-\r
-/* \r
- * Function twi_disable\r
- * Desc disables twi pins\r
- * Input none\r
- * Output none\r
- */\r
-void twi_disable(void)\r
-{\r
- // disable twi module, acks, and twi interrupt\r
- TWCR &= ~(_BV(TWEN) | _BV(TWIE) | _BV(TWEA));\r
-\r
- // deactivate internal pullups for twi.\r
- DDRD |= (1 << PD0);\r
- DDRD |= (1 << PD1);\r
- PORTD |= (0 << PD0);\r
- PORTD |= (0 << PD1);\r
-\r
-}\r
-\r
-/* \r
- * Function twi_slaveInit\r
- * Desc sets slave address and enables interrupt\r
- * Input none\r
- * Output none\r
- */\r
-void twi_setAddress(uint8_t address)\r
-{\r
- // set twi slave address (skip over TWGCE bit)\r
- TWAR = address << 1;\r
-}\r
-\r
-/* \r
- * Function twi_setClock\r
- * Desc sets twi bit rate\r
- * Input Clock Frequency\r
- * Output none\r
- */\r
-void twi_setFrequency(uint32_t frequency)\r
-{\r
- TWBR = ((F_CPU / frequency) - 16) / 2;\r
- \r
- /* twi bit rate formula from atmega128 manual pg 204\r
- SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR))\r
- note: TWBR should be 10 or higher for master mode\r
- It is 72 for a 16mhz Wiring board with 100kHz TWI */\r
-}\r
-\r
-/* \r
- * Function twi_readFrom\r
- * Desc attempts to become twi bus master and read a\r
- * series of bytes from a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes to read into array\r
- * sendStop: Boolean indicating whether to send a stop at the end\r
- * Output number of bytes read\r
- */\r
-uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 0;\r
- }\r
- // wait until twi is ready, become master receiver\r
- while(TWI_READY != twi_state){\r
- continue;\r
- } \r
- twi_state = TWI_MRX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length-1; // This is not intuitive, read on...\r
- // On receive, the previously configured ACK/NACK setting is transmitted in\r
- // response to the received byte before the interrupt is signalled. \r
- // Therefor we must actually set NACK when the _next_ to last byte is\r
- // received, causing that NACK to be sent in response to receiving the last\r
- // expected byte of data.\r
-\r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_READ;\r
- twi_slarw |= address << 1;\r
-\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent ourselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw;\r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTA);\r
-\r
- // wait for read operation to complete\r
- while(TWI_MRX == twi_state){\r
- continue;\r
- }\r
-\r
- if (twi_masterBufferIndex < length)\r
- length = twi_masterBufferIndex;\r
-\r
- // copy twi buffer to data\r
- for(i = 0; i < length; ++i){\r
- data[i] = twi_masterBuffer[i];\r
- }\r
- \r
- return length;\r
-}\r
-\r
-/* \r
- * Function twi_writeTo\r
- * Desc attempts to become twi bus master and write a\r
- * series of bytes to a device on the bus\r
- * Input address: 7bit i2c device address\r
- * data: pointer to byte array\r
- * length: number of bytes in array\r
- * wait: boolean indicating to wait for write or not\r
- * sendStop: boolean indicating whether or not to send a stop at the end\r
- * Output 0 .. success\r
- * 1 .. length to long for buffer\r
- * 2 .. address send, NACK received\r
- * 3 .. data send, NACK received\r
- * 4 .. other twi error (lost bus arbitration, bus error, ..)\r
- */\r
-uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait, uint8_t sendStop)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
-\r
- // wait until twi is ready, become master transmitter\r
- while(TWI_READY != twi_state){\r
- continue;\r
- }\r
- twi_state = TWI_MTX;\r
- twi_sendStop = sendStop;\r
- // reset error state (0xFF.. no error occured)\r
- twi_error = 0xFF;\r
-\r
- // initialize buffer iteration vars\r
- twi_masterBufferIndex = 0;\r
- twi_masterBufferLength = length;\r
- \r
- // copy data to twi buffer\r
- for(i = 0; i < length; ++i){\r
- twi_masterBuffer[i] = data[i];\r
- }\r
- \r
- // build sla+w, slave device address + w bit\r
- twi_slarw = TW_WRITE;\r
- twi_slarw |= address << 1;\r
- \r
-\r
- // if we're in a repeated start, then we've already sent the START\r
- // in the ISR. Don't do it again.\r
- //\r
- if (true == twi_inRepStart) {\r
- // if we're in the repeated start state, then we've already sent the start,\r
- // (@@@ we hope), and the TWI statemachine is just waiting for the address byte.\r
- // We need to remove ourselves from the repeated start state before we enable interrupts,\r
- // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning\r
- // up. Also, don't enable the START interrupt. There may be one pending from the \r
- // repeated start that we sent outselves, and that would really confuse things.\r
- twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR\r
- do {\r
- TWDR = twi_slarw; \r
- } while(TWCR & _BV(TWWC));\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START\r
- }\r
- else\r
- // send start condition\r
- TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE) | _BV(TWSTA); // enable INTs\r
-\r
-\r
- // wait for write operation to complete\r
- while(wait && (TWI_MTX == twi_state)){\r
- continue;\r
- }\r
-\r
- if (twi_error == 0xFF)\r
- return 0; // success\r
- else if (twi_error == TW_MT_SLA_NACK)\r
- return 2; // error: address send, nack received\r
- else if (twi_error == TW_MT_DATA_NACK)\r
- return 3; // error: data send, nack received\r
- else\r
- return 4; // other twi error\r
-}\r
-\r
-/* \r
- * Function twi_transmit\r
- * Desc fills slave tx buffer with data\r
- * must be called in slave tx event callback\r
- * Input data: pointer to byte array\r
- * length: number of bytes in array\r
- * Output 1 length too long for buffer\r
- * 2 not slave transmitter\r
- * 0 ok\r
- */\r
-uint8_t twi_transmit(const uint8_t* data, uint8_t length)\r
-{\r
- uint8_t i;\r
-\r
- // ensure data will fit into buffer\r
- if(TWI_BUFFER_LENGTH < length){\r
- return 1;\r
- }\r
- \r
- // ensure we are currently a slave transmitter\r
- if(TWI_STX != twi_state){\r
- return 2;\r
- }\r
- \r
- // set length and copy data into tx buffer\r
- twi_txBufferLength = length;\r
- for(i = 0; i < length; ++i){\r
- twi_txBuffer[i] = data[i];\r
- }\r
- \r
- return 0;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveRxEvent\r
- * Desc sets function called before a slave read operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveRxEvent( void (*function)(uint8_t*, int) )\r
-{\r
- twi_onSlaveReceive = function;\r
-}\r
-\r
-/* \r
- * Function twi_attachSlaveTxEvent\r
- * Desc sets function called before a slave write operation\r
- * Input function: callback function to use\r
- * Output none\r
- */\r
-void twi_attachSlaveTxEvent( void (*function)(void) )\r
-{\r
- twi_onSlaveTransmit = function;\r
-}\r
-\r
-/* \r
- * Function twi_reply\r
- * Desc sends byte or readys receive line\r
- * Input ack: byte indicating to ack or to nack\r
- * Output none\r
- */\r
-void twi_reply(uint8_t ack)\r
-{\r
- // transmit master read ready signal, with or without ack\r
- if(ack){\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT) | _BV(TWEA);\r
- }else{\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT);\r
- }\r
-}\r
-\r
-/* \r
- * Function twi_stop\r
- * Desc relinquishes bus master status\r
- * Input none\r
- * Output none\r
- */\r
-void twi_stop(void)\r
-{\r
- // send stop condition\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO);\r
-\r
- // wait for stop condition to be exectued on bus\r
- // TWINT is not set after a stop condition!\r
- while(TWCR & _BV(TWSTO)){\r
- continue;\r
- }\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-/* \r
- * Function twi_releaseBus\r
- * Desc releases bus control\r
- * Input none\r
- * Output none\r
- */\r
-void twi_releaseBus(void)\r
-{\r
- // release bus\r
- TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT);\r
-\r
- // update twi state\r
- twi_state = TWI_READY;\r
-}\r
-\r
-ISR(TWI_vect)\r
-{\r
- switch(TW_STATUS){\r
- // All Master\r
- case TW_START: // sent start condition\r
- case TW_REP_START: // sent repeated start condition\r
- // copy device address and r/w bit to output register and ack\r
- TWDR = twi_slarw;\r
- twi_reply(1);\r
- break;\r
-\r
- // Master Transmitter\r
- case TW_MT_SLA_ACK: // slave receiver acked address\r
- case TW_MT_DATA_ACK: // slave receiver acked data\r
- // if there is data to send, send it, otherwise stop \r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- // copy data to output register and ack\r
- TWDR = twi_masterBuffer[twi_masterBufferIndex++];\r
- twi_reply(1);\r
- }else{\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- }\r
- }\r
- break;\r
- case TW_MT_SLA_NACK: // address sent, nack received\r
- twi_error = TW_MT_SLA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_DATA_NACK: // data sent, nack received\r
- twi_error = TW_MT_DATA_NACK;\r
- twi_stop();\r
- break;\r
- case TW_MT_ARB_LOST: // lost bus arbitration\r
- twi_error = TW_MT_ARB_LOST;\r
- twi_releaseBus();\r
- break;\r
-\r
- // Master Receiver\r
- case TW_MR_DATA_ACK: // data received, ack sent\r
- // put byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- case TW_MR_SLA_ACK: // address sent, ack received\r
- // ack if more bytes are expected, otherwise nack\r
- if(twi_masterBufferIndex < twi_masterBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_MR_DATA_NACK: // data received, nack sent\r
- // put final byte into buffer\r
- twi_masterBuffer[twi_masterBufferIndex++] = TWDR;\r
- if (twi_sendStop)\r
- twi_stop();\r
- else {\r
- twi_inRepStart = true; // we're gonna send the START\r
- // don't enable the interrupt. We'll generate the start, but we \r
- // avoid handling the interrupt until we're in the next transaction,\r
- // at the point where we would normally issue the start.\r
- TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ;\r
- twi_state = TWI_READY;\r
- } \r
- break;\r
- case TW_MR_SLA_NACK: // address sent, nack received\r
- twi_stop();\r
- break;\r
- // TW_MR_ARB_LOST handled by TW_MT_ARB_LOST case\r
-\r
- // Slave Receiver\r
- case TW_SR_SLA_ACK: // addressed, returned ack\r
- case TW_SR_GCALL_ACK: // addressed generally, returned ack\r
- case TW_SR_ARB_LOST_SLA_ACK: // lost arbitration, returned ack\r
- case TW_SR_ARB_LOST_GCALL_ACK: // lost arbitration, returned ack\r
- // enter slave receiver mode\r
- twi_state = TWI_SRX;\r
- // indicate that rx buffer can be overwritten and ack\r
- twi_rxBufferIndex = 0;\r
- twi_reply(1);\r
- break;\r
- case TW_SR_DATA_ACK: // data received, returned ack\r
- case TW_SR_GCALL_DATA_ACK: // data received generally, returned ack\r
- // if there is still room in the rx buffer\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- // put byte in buffer and ack\r
- twi_rxBuffer[twi_rxBufferIndex++] = TWDR;\r
- twi_reply(1);\r
- }else{\r
- // otherwise nack\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_SR_STOP: // stop or repeated start condition received\r
- // ack future responses and leave slave receiver state\r
- twi_releaseBus();\r
- // put a null char after data if there's room\r
- if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){\r
- twi_rxBuffer[twi_rxBufferIndex] = '\0';\r
- }\r
- // callback to user defined callback\r
- twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex);\r
- // since we submit rx buffer to "wire" library, we can reset it\r
- twi_rxBufferIndex = 0;\r
- break;\r
- case TW_SR_DATA_NACK: // data received, returned nack\r
- case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack\r
- // nack back at master\r
- twi_reply(0);\r
- break;\r
- \r
- // Slave Transmitter\r
- case TW_ST_SLA_ACK: // addressed, returned ack\r
- case TW_ST_ARB_LOST_SLA_ACK: // arbitration lost, returned ack\r
- // enter slave transmitter mode\r
- twi_state = TWI_STX;\r
- // ready the tx buffer index for iteration\r
- twi_txBufferIndex = 0;\r
- // set tx buffer length to be zero, to verify if user changes it\r
- twi_txBufferLength = 0;\r
- // request for txBuffer to be filled and length to be set\r
- // note: user must call twi_transmit(bytes, length) to do this\r
- twi_onSlaveTransmit();\r
- // if they didn't change buffer & length, initialize it\r
- if(0 == twi_txBufferLength){\r
- twi_txBufferLength = 1;\r
- twi_txBuffer[0] = 0x00;\r
- }\r
- // transmit first byte from buffer, fall\r
- case TW_ST_DATA_ACK: // byte sent, ack returned\r
- // copy data to output register\r
- TWDR = twi_txBuffer[twi_txBufferIndex++];\r
- // if there is more to send, ack, otherwise nack\r
- if(twi_txBufferIndex < twi_txBufferLength){\r
- twi_reply(1);\r
- }else{\r
- twi_reply(0);\r
- }\r
- break;\r
- case TW_ST_DATA_NACK: // received nack, we are done \r
- case TW_ST_LAST_DATA: // received ack, but we are done already!\r
- // ack future responses\r
- twi_reply(1);\r
- // leave slave receiver state\r
- twi_state = TWI_READY;\r
- break;\r
-\r
- // All\r
- case TW_NO_INFO: // no state information\r
- break;\r
- case TW_BUS_ERROR: // bus error, illegal stop/start\r
- twi_error = TW_BUS_ERROR;\r
- twi_stop();\r
- break;\r
- }\r
-}\r
-\r
+++ /dev/null
-/*
- twi.h - TWI/I2C library for Wiring & Arduino
- Copyright (c) 2006 Nicholas Zambetti. All right reserved.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#ifndef twi_h
-#define twi_h
- #include <inttypes.h>
-
- //#define ATMEGA8
-
- #ifndef TWI_FREQ
- #define TWI_FREQ 100000L
- #endif
-
- #ifndef TWI_BUFFER_LENGTH
- #define TWI_BUFFER_LENGTH 32
- #endif
-
- #define TWI_READY 0
- #define TWI_MRX 1
- #define TWI_MTX 2
- #define TWI_SRX 3
- #define TWI_STX 4
-
- void twi_init(void);
- void twi_disable(void);
- void twi_setAddress(uint8_t);
- void twi_setFrequency(uint32_t);
- uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t);
- uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t);
- uint8_t twi_transmit(const uint8_t*, uint8_t);
- void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );
- void twi_attachSlaveTxEvent( void (*)(void) );
- void twi_reply(uint8_t);
- void twi_stop(void);
- void twi_releaseBus(void);
-
-#endif
-
+++ /dev/null
-/*\r
- * uart.c\r
- *\r
- * Created on: 07.03.2017\r
- * Author: adria\r
- */\r
-#include "main.h"\r
-\r
-void uinit()\r
-{\r
- unsigned int baud = BAUD_PRESCALE;\r
-\r
- // Set baud rate\r
- UBRR0H = (unsigned char)(baud>>8);\r
- UBRR0L = (unsigned char)baud;\r
- UCSR0A = 0;\r
- //Disable receiver and Enable transmitter\r
- UCSR0B |= (0 << RXCIE0) | (0 << TXCIE0) | (0 << UDRIE0) | (0 << RXEN0) | ( 1 << TXEN0);//(1<<TXEN0);\r
- //Set frame format: 8data, 1stop bit\r
- UCSR0C |= (0<<USBS0)|(3<<UCSZ00);\r
-}\r
-\r
-void uputchar( char c )\r
-{\r
- // Wait for empty transmit buffer\r
- while ( !( UCSR0A & (1<<UDRE0)) );\r
- //Put data into buffer, sends the data\r
- UDR0 = c;\r
-}\r
-\r
-void uputs( char *s )\r
-{\r
- while( *s )\r
- uputchar( *s++ );\r
-}\r
-\r
-void uputsnl( char *s )\r
-{\r
- uputs( s );\r
- uputchar('\r');\r
- uputchar('\n');\r
- }\r
jspc29 / avr.git / commitdiff