Diff: main.cpp

Revision:

2:7e390bcce297

Parent:

0:6be57f391716

Child:

3:2ab78e7e8518

--- a/main.cpp	Wed Aug 23 11:05:46 2017 +0000
+++ b/main.cpp	Fri Aug 25 07:46:48 2017 +0000
@@ -3,17 +3,25 @@
 #include "LT_I2C.h"
 #include "LTC2945.h"
 
-I2C i2c(p28, p27);
+I2C i2c(p9, p10);
 // sda, scl
 
+extern I2C* i2c_object;
+
 Serial pc(USBTX, USBRX);
 
-#define LTC2945_I2C_ADDRESS 0xD4
+const int ltc2945_addr = 0xDE>>1;
 
-#define ASSERT(x) if (! (x)) { pc.printf("%s:%d %s failed!\n", __FILE__, __LINE__, #x); }
+int test_write(int byte) {
+    return i2c_object->write(byte);
+}
+
+#define ASSERT(x) if (! (x)) { printf("%s:%d %s failed!\n", __FILE__, __LINE__, #x); }
+#define DEBUG_LINE printf("DEBUG: %s:%d\n", __FILE__, __LINE__);
 
 int main() {
-    ASSERT(lt_i2c_init_attach(&i2c) == 0);
+    ASSERT(lt_i2c_init_attach(&i2c) == LT_I2C_INIT_FINE);
+    i2c.frequency(10000);
 
     const float LTC2945_DELTA_SENSE_lsb = 2.5006105E-05;        //!< Typical Delta lsb weight in volts
     const float LTC2945_VIN_lsb = 2.5006105E-02;                //!< Typical VIN lsb weight in volts
@@ -30,24 +38,26 @@
     float VIN;
     
     while (true) {
+        ack = 0;
         adc_command = LTC2945_SENSE_MONITOR | LTC2945_CONTINUOUS_MODE; // Builds commands to set LTC2945 to continuous mode
-        ack |= LTC2945_write(LTC2945_I2C_ADDRESS, LTC2945_CONTROL_REG, adc_command);   // Sets the LTC2945 to continuous mode
+        ack |= LTC2945_write(ltc2945_addr, LTC2945_CONTROL_REG, adc_command);   // Sets the LTC2945 to continuous mode
         ASSERT(ack == 0);
-        resistor = .01; // Resistor Value On Demo Board
-    
-        ack |= LTC2945_read_24_bits(LTC2945_I2C_ADDRESS, LTC2945_POWER_MSB2_REG, &power_code);  // Reads the ADC registers that contains V^2
+        resistor = .0182445; // Resistor Value On Demo Board
+
+        ack |= LTC2945_read_24_bits(ltc2945_addr, LTC2945_POWER_MSB2_REG, &power_code);  // Reads the ADC registers that contains V^2
         ASSERT(ack == 0);
         power = LTC2945_code_to_power(power_code, resistor, LTC2945_Power_lsb); // Calculates power from power code, resistor value and power lsb
-    
-        ack |= LTC2945_read_12_bits(LTC2945_I2C_ADDRESS, LTC2945_DELTA_SENSE_MSB_REG, &current_code); // Reads the voltage code across sense resistor
+
+        ack |= LTC2945_read_12_bits(ltc2945_addr, LTC2945_DELTA_SENSE_MSB_REG, &current_code); // Reads the voltage code across sense resistor
         ASSERT(ack == 0);
         current = LTC2945_code_to_current(current_code, resistor, LTC2945_DELTA_SENSE_lsb); // Calculates current from current code, resistor value and current lsb
     
-        ack |= LTC2945_read_12_bits(LTC2945_I2C_ADDRESS, LTC2945_VIN_MSB_REG, &VIN_code);   // Reads VIN voltage code
+        ack |= LTC2945_read_12_bits(ltc2945_addr, LTC2945_VIN_MSB_REG, &VIN_code);   // Reads VIN voltage code
         ASSERT(ack == 0);
         VIN = LTC2945_VIN_code_to_voltage(VIN_code, LTC2945_VIN_lsb);  // Calculates VIN voltage from VIN code and lsb
-        
-        pc.printf("power: %f, current: %f, Vin: %f\n", power, current, VIN);
-        wait_ms(500);
+
+
+        printf("power: %f, current: %f, Vin: %f\n", power, current, VIN);
+        wait_ms(500);        
     }
 }