INA209 fixes and unified Bus voltage reading to mV

components/common/include/legos_power.h

@@ -21,7 +21,7 @@ typedef struct power_monitor {
  * @brief Power monitor readings
  */
 typedef struct power_readings {
-    float voltage; // Voltage in mV
+    float voltage; // Bus Voltage in mV
     float current; // Current in mA
     float power;   // Power in mW
 } power_readings;