From 081f1409dc57a257868e3667a483c8c81b975ec6 Mon Sep 17 00:00:00 2001
From: Michael Wiebusch <antiquark@gmx.net>
Date: Thu, 9 Jan 2014 12:43:52 +0100
Subject: [PATCH] can now read out complete adc0 without problems

---
 firmware/src/CB_functions.c | 19 ++++++++++++++++---
 firmware/src/spi1.h         |  2 ++
 firmware/src/spi2.c         |  2 +-
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/firmware/src/CB_functions.c b/firmware/src/CB_functions.c
index f51ed39..ab45120 100644
--- a/firmware/src/CB_functions.c
+++ b/firmware/src/CB_functions.c
@@ -17,6 +17,7 @@
 
 extern uint16_t spi1DataBuffer[];
 extern uint16_t SPI_DMA_Buffer_In[];
+extern uint16_t SPI_DMA_Buffer[];
 uint16_t uC_regs[UC_NO_REGS];
 uint16_t debug_counter = 0;
 
@@ -69,6 +70,9 @@ void report_all_registers(void) {
 void adc0_read(void){
   
   uint8_t c = 0; // counter for spi buffer fill
+  static uint8_t d = 0;
+  
+  c = 0; 
   
   // the received data is always one transfer cycle
   // later than the corresponding commands requesting
@@ -84,10 +88,12 @@ void adc0_read(void){
   spi1_writeWord(CH4VSGND | UNIPOLAR); // VDDACUR
   SPI_DMA_Buffer_In[c++] = VDDDCUR;
   SPI_DMA_Buffer_In[c++] = spi1_receivedWord();
-  spi1_writeWord(CH5VSCH7 | UNIPOLAR); // VDDD
+//   spi1_writeWord(CH5VSCH7 | UNIPOLAR); // VDDD
+  spi1_writeWord(CH5VSGND | UNIPOLAR); // VDDD vs AGND
   SPI_DMA_Buffer_In[c++] = VDDACUR;
   SPI_DMA_Buffer_In[c++] = spi1_receivedWord();
-  spi1_writeWord(CH6VSCH7 | UNIPOLAR); // VDDA
+//   spi1_writeWord(CH6VSCH7 | UNIPOLAR); // VDDA
+  spi1_writeWord(CH6VSGND | UNIPOLAR); // VDDA vs AGND
   SPI_DMA_Buffer_In[c++] = VDDD;
   SPI_DMA_Buffer_In[c++] = spi1_receivedWord();
   spi1_writeWord(CH7VSGND | UNIPOLAR); // GNDSENSE
@@ -154,9 +160,16 @@ void adc0_read(void){
   SPI_DMA_Buffer_In[c++] = VDISCREF2D;
   SPI_DMA_Buffer_In[c++] = spi1_receivedWord();
   
-  spi1_writeWord(CH1VSGND | UNIPOLAR); // dummy command
+  spi1_writeWord(CH3VSGND | UNIPOLAR); // dummy command
   SPI_DMA_Buffer_In[c++] = VDISCREFD;
   SPI_DMA_Buffer_In[c++] = spi1_receivedWord();
+
+
+//   SPI_DMA_Buffer[c++] = d;
+//   SPI_DMA_Buffer[c++] = d;
+//   
+  d =  (d+1)%16;
+//   
   debug_out(c);
 
   spi_dma_transfer(c);
diff --git a/firmware/src/spi1.h b/firmware/src/spi1.h
index 738a6d4..03d4075 100644
--- a/firmware/src/spi1.h
+++ b/firmware/src/spi1.h
@@ -51,6 +51,8 @@
 #define CH2VSGND 0b1001000000000000
 #define CH3VSGND 0b1101000000000000
 #define CH4VSGND 0b1010000000000000
+#define CH5VSGND 0b1110000000000000
+#define CH6VSGND 0b1011000000000000
 #define CH7VSGND 0b1111000000000000
 
 #define CH0VSCH7 0b1000100000000000
diff --git a/firmware/src/spi2.c b/firmware/src/spi2.c
index 3862c2c..06f1a43 100644
--- a/firmware/src/spi2.c
+++ b/firmware/src/spi2.c
@@ -116,7 +116,7 @@ void spi_dma_transfer(uint8_t count) {
 
   while(spi_dma_busyFlag){};
   
-  memcpy(SPI_DMA_Buffer, SPI_DMA_Buffer_In, count );
+  memcpy(SPI_DMA_Buffer, SPI_DMA_Buffer_In, count*2 );
   
 //   DMA_Cmd(DMA1_Channel4, DISABLE);
   DMA_Cmd(DMA1_Channel5, DISABLE);
-- 
2.43.0