From: Philipp Klaus <klaus@physik.uni-frankfurt.de>
Date: Fri, 2 Jun 2017 11:35:40 +0000 (+0200)
Subject: Pt100: new command to read EEPROM values
X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=d26f1d6cc08df3b531a9f4d56222d5a1c1b410e3;p=avr.git

Pt100: new command to read EEPROM values
---

diff --git a/pt100/uart.c b/pt100/uart.c
index 8deb8d9..029cb33 100644
--- a/pt100/uart.c
+++ b/pt100/uart.c
@@ -11,9 +11,11 @@
 //ATb800XXXX    -- Temperature given by ADC
 //AIb0FFFFCC    -- Firmware version & connected channels (bitmask) in last byte
 //AVb000XXXX    -- AVCC from ADC channel 3, in mV
+//AGb0AAXXXX    -- EEPROM content (uint16) at address AA*2
 
 //Commands sent by user
-//WEb0AAXXXX     -- write int16 to eeprom at address AA*2
+//WEb0AAXXXX     -- write uint16 to   eeprom at address AA*2
+//WGb0AA0000     -- read  uint16 from eeprom at address AA*2
 //WRb0000000     -- reload eeprom data
 //WCb000XXXX     -- control register, t.b.d.
 
@@ -120,6 +122,11 @@ ISR(USART0_RX_vect) {
           uint8_t addr = hex_to_byte(rxbuf+4);
           eeprom_write(addr,  (((uint16_t)hex_to_byte(rxbuf+6))<<8) | hex_to_byte(rxbuf+8));
           }
+        else if(rxbuf[1] == 'G') {
+          uint8_t addr = hex_to_byte(rxbuf+4);
+          uint16_t data = eeprom_read(addr);
+          send_answer_hex('G', '0', ((uint32_t)addr << 16) | data);
+          }
         else if(rxbuf[1] == 'C') {
           control_reg = (hex_to_byte(rxbuf+6)<<8) | hex_to_byte(rxbuf+8);
           }