Diff: main.cpp

Revision:

1:4e4194db7cd6

Parent:

0:1473318f27b6

Child:

2:c9e727dcd00e

--- a/main.cpp	Wed Nov 16 15:54:08 2016 +0000
+++ b/main.cpp	Tue Nov 29 03:20:35 2016 +0000
@@ -1,21 +1,18 @@
 #include "mbed.h"
 #include "LTC2991.h"
-//#include <Wire.h>
 #include <stdarg.h>
 
 int8_t ack; // 0 == ack, 1 == no ack
 const uint16_t LTC2991_TIMEOUT=1000; //!< Configures the maximum timeout allowed for an LTC2991 read.
 Serial pc(USBTX, USBRX, 9600);
 
-void setup();
+
+//void setup();
 int main();
 void readSingle();
 void readDiff();
-
-
 void setup() {
-  //Wire.begin();
-  
+  ack = 0;
   while (true)
   {
     pc.printf("boot\n");
@@ -23,6 +20,7 @@
     ack |= LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, 0x00); //! Sets registers to default starting values.
     ack |= LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V5678_REG, 0x00);
     ack |= LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_PWM_Tinternal_REG, LTC2991_REPEAT_MODE); //! Configures LTC2991 for Repeated Acquisition mode
+    
     if (ack != 0) {
       pc.printf("Error: No Acknowledge. Check I2C Address.\n");
       wait_ms(500);
@@ -36,6 +34,7 @@
     setup();
     while(1) {
         readDiff();
+        readSingle();
         wait_ms(750);
     }
 }
@@ -44,19 +43,28 @@
   int8_t data_valid;
   int16_t code;
   float voltage;
-
+  ack = 0;
   ack |= LTC2991_register_set_clear_bits(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, 0x00, LTC2991_V1_V2_DIFFERENTIAL_ENABLE | LTC2991_V1_V2_TEMP_ENABLE);
   ack |= LTC2991_adc_read_new_data(LTC2991_I2C_ADDRESS, LTC2991_V1_MSB_REG, &code, &data_valid, LTC2991_TIMEOUT);
   voltage = LTC2991_code_to_single_ended_voltage(code, LTC2991_SINGLE_ENDED_lsb);
-  pc.printf("V1: %4.2f V", voltage);
+  if (ack != 0) {
+      pc.printf("Error: No Acknowledge.\n");
+  } else {
+      pc.printf("V1: %4.2f V\n", voltage);
+  }
 }
+
 void readDiff() {
   int8_t data_valid;
   int16_t code;
   float voltage;
- 
+  ack = 0;
   ack |= LTC2991_register_set_clear_bits(LTC2991_I2C_ADDRESS, LTC2991_CONTROL_V1234_REG, LTC2991_V1_V2_DIFFERENTIAL_ENABLE, LTC2991_V1_V2_TEMP_ENABLE);
   ack |= LTC2991_adc_read_new_data(LTC2991_I2C_ADDRESS, LTC2991_V2_MSB_REG, &code, &data_valid, LTC2991_TIMEOUT);
   voltage = LTC2991_code_to_differential_voltage(code, LTC2991_DIFFERENTIAL_lsb);
-  pc.printf("V1-V2: %4.2f V", voltage);
+  if (ack != 0) {
+      pc.printf("Error: No Acknowledge.\n");
+  } else {
+      pc.printf("V1-V2: %4.2f V\n", voltage, ack);
+  }
 }
\ No newline at end of file