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voltage / current measure fixed

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This commit is contained in:
Rémi Heredero 2023-03-03 13:11:20 +01:00
parent dd5912cc30
commit 5aa7d936f3
1 changed files with 5 additions and 3 deletions
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8
solar_panel.X/measure.c
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@ -42,7 +42,7 @@ uint16_t measure_voltage()
sum += measure_adc(VOLTAGE_CHANNEL); sum += measure_adc(VOLTAGE_CHANNEL);
} }
sum /= AVERAGE_SAMPLES; sum /= AVERAGE_SAMPLES;
sum = (sum * ADC_RESOLUTION) / ADC_REFH; sum = (sum * ADC_REFH) / ADC_RESOLUTION;
return (uint16_t)(sum); return (uint16_t)(sum);
} }
@ -52,9 +52,11 @@ uint16_t measure_current(uint16_t offset)
for(int i = 0; i< AVERAGE_SAMPLES; i++){ for(int i = 0; i< AVERAGE_SAMPLES; i++){
sum += measure_adc(CURRENT_CHANNEL); sum += measure_adc(CURRENT_CHANNEL);
} }
uint32_t m = (sum / AVERAGE_SAMPLES); uint32_t m = (sum / AVERAGE_SAMPLES); // m is bits
m = (m * ADC_REFH) / ADC_RESOLUTION; // m is mV
m *= 1000; // m is uV
m /= GAIN; m /= GAIN;
m /= RESISTOR; m /= RESISTOR; // m is uA
if(m <= offset){ if(m <= offset){
m = 0; m = 0;
} else { } else {