Diff: LTC2487/LTC2487.cpp

Revision:

12:1cada1fe4743

Parent:

7:8a5e65e63e2a

Child:

13:604e6933366f

--- a/LTC2487/LTC2487.cpp	Wed Mar 28 01:25:07 2018 +0000
+++ b/LTC2487/LTC2487.cpp	Mon May 07 03:38:15 2018 +0000
@@ -2,17 +2,26 @@
 #include "LTC2487.h"
 #include "MODSERIAL.h"
 
-MODSERIAL pc3(USBTX, USBRX);
 
 namespace {
     const uint8_t I2C_WRITE  = 0x00;
     const uint8_t I2C_READ   = 0x01;
     
-    //Channel addresses
-    //0b10110000 ch0 --> 0xb0
-    //0b10111000 ch1 --> 0xb8
-    //0b10110001 ch2 --> 0xb1
-    //0b10111001 ch3 --> 0xb9
+    //Channel addresses (first two bits are fixed)
+    //0b10  EN  SGL ODD A2  A1  A0
+    //0b10  1   1   0   0   0   0   ch0 --> 0xb0
+    //0b10  1   1   1   0   0   0   ch1 --> 0xb8
+    //0b10  1   1   0   0   0   1   ch2 --> 0xb1
+    //0b10  1   1   1   0   0   1   ch3 --> 0xb9
+    
+
+    //Config Section
+    //      EN2 IM  FA  FB  SPD GS2 GS1 GS0
+    //      1   0   0   0   0   0   1   0       //Initial
+    //      1   0   0   0   1   0   1   1       //New Attempt with same gain (8x)
+    //      1   0   0   0   1   0   0   0       //New Attempt with unity gain (1x)
+    
+    
     const uint8_t CHNL_0     = 0xb0;
     const uint8_t CHNL_1     = 0xb8;
     const uint8_t CHNL_2     = 0xb1;
@@ -32,7 +41,7 @@
     char ADC_channel[1];
     char ADC_data_rx[3];
     char ADC_config[1];
-    ADC_config[0] = 0x82;
+    ADC_config[0] = 0b10001000;//0x82; //0b10000010
         
     //select channel to read
     switch (chnl){
@@ -60,6 +69,7 @@
     wait(0.08);
     //Read data from selected channel --> 24bits --> 23bit=SIGN 22bit=MSB 21-7bits=DATA 5-0bits=JUNK
     i2c.read((addrI2C<<1)|(I2C_READ), ADC_data_rx, 3);
+    //must wait, otherwise breaks...
     wait(0.08);
     //Stitch together the bytes into a 24bit value
     unsigned long data = (ADC_data_rx[0] << 16) | (ADC_data_rx[1] << 8)| ADC_data_rx[2];