Read temperature over I2C works

Has not been tested with thermistor as I didn't have the hardware.
Testing with a hardcoded positive number works.

prosjekt.X/command-handler.c

@@ -140,7 +140,16 @@ uint8_t route_command(int pos) {
     case READ_VOLTAGE:
       return READ_VOLTAGE;
     case READ_TERMPERATURE:
-      return READ_TERMPERATURE;
+    {
+        uint16_t v_therm = thermistor_voltage_read();
+        union {
+            int16_t temp;
+            uint8_t bytes[2];
+        } temperature;
+        temperature.temp = (int16_t) ( calculate_thermistor_temp(v_therm) * 1000 );
+        return temperature.bytes[pos];
+    }
+        break;
     case READ_FAN_SPEED:
         if (context.fan == FAN1) {
             return fan1_history[0];

prosjekt.X/command-handler.h

@@ -16,6 +16,8 @@ extern "C" {
 #include <avr/io.h>
 #include <stdint.h>
 #include <string.h>
+#include "voltage.h"
+#include "themistor-temp.h"
         
 // Enum of all valid command types
 typedef enum {

prosjekt.X/main.c

@@ -29,6 +29,8 @@ volatile uint16_t fan2_history[512] = {2, 3, 4, 5};
 
 int main() {
   init_uart((uint16_t)9600);
+  ADC0_init();
+  init_led();
   init_i2c();
   stdout = &USART_stream;
 

prosjekt.X/nbproject/configurations.xml

@@ -29,6 +29,7 @@
       <itemPath>voltage.c</itemPath>
       <itemPath>i2c.c</itemPath>
       <itemPath>command-handler.c</itemPath>
+      <itemPath>thermistor-temp.c</itemPath>
     </logicalFolder>
   </logicalFolder>
   <projectmakefile>Makefile</projectmakefile>