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Update battery voltage calculation to use a hex value for the 12bit ADC

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This commit is contained in:
Dominic Clifton 2014-05-12 00:20:15 +01:00
parent 9f39cad2f9
commit c77c93c8b7
1 changed files with 2 additions and 2 deletions
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4
src/battery.c
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@ -17,8 +17,8 @@ static batteryConfig_t *batteryConfig;
uint16_t batteryAdcToVoltage(uint16_t src)
{
// calculate battery voltage based on ADC reading
// result is Vbatt in 0.1V steps. 3.3V = ADC Vref, 4095 = 12bit adc, 110 = 11:1 voltage divider (10k:1k) * 10 for 0.1V
return (((src) * 3.3f) / 4095) * batteryConfig->vbatscale;
// result is Vbatt in 0.1V steps. 3.3V = ADC Vref, 0xFFF = 12bit adc, 110 = 11:1 voltage divider (10k:1k) * 10 for 0.1V
return (((src) * 3.3f) / 0xFFF) * batteryConfig->vbatscale;
}