Diff: main.cpp

Revision:

0:1473318f27b6

Child:

1:4e4194db7cd6

diff -r 000000000000 -r 1473318f27b6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Nov 16 15:54:08 2016 +0000
@@ -0,0 +1,62 @@
+#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();
+int main();
+void readSingle();
+void readDiff();
+
+
+void setup() {
+  //Wire.begin();
+  
+  while (true)
+  {
+    pc.printf("boot\n");
+    ack |= LTC2991_register_write(LTC2991_I2C_ADDRESS, LTC2991_CHANNEL_ENABLE_REG, LTC2991_ENABLE_ALL_CHANNELS); //! Enables all channels
+    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);
+    } else {
+      break;
+    }
+  }
+}
+
+int main() {
+    setup();
+    while(1) {
+        readDiff();
+        wait_ms(750);
+    }
+}
+
+void readSingle() {
+  int8_t data_valid;
+  int16_t code;
+  float voltage;
+
+  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);
+}
+void readDiff() {
+  int8_t data_valid;
+  int16_t code;
+  float voltage;
+ 
+  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);
+}
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