lorawan/sodaq_one/battery.ino

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Arduino
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2016-10-22 20:38:24 +00:00
#define ADC_AREF 3.3f
#define BATVOLT_R1 2.0f
#define BATVOLT_R2 2.0f
#define BATVOLT_PIN BAT_VOLT
uint16_t getBatteryVoltage()
{
uint16_t voltage = (uint16_t)((ADC_AREF / 1.023) * (BATVOLT_R1 + BATVOLT_R2) / BATVOLT_R2 * (float)analogRead(BATVOLT_PIN));
return voltage;
}