X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=firmware%2Fadc.c;h=0ec32af77c0a54db8bbc4b0f8a6ac8476086e15f;hb=5d0f6ceb47eed2282aeb11eb57eebc390add234e;hp=abbd3bac5b93c90c2ad9304b0430165e32aa3805;hpb=f31e81252594197944d593cb73c5a44856ee4893;p=bike-lights.git

diff --git a/firmware/adc.c b/firmware/adc.c
index abbd3ba..0ec32af 100644
--- a/firmware/adc.c
+++ b/firmware/adc.c
@@ -33,7 +33,7 @@ static void inline setup_mux(unsigned char n)
 		break;
 	case 3: // ambient light: 1.1V, ADC5 (PA6), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2) | _BV(MUX0);
-		sum_shift = 0; // 1 measurement
+		sum_shift = 3; // 3 measurements
 		break;
 	case 4: // batt voltage: 1.1V, ADC6 (PA7), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2) | _BV(MUX1);
@@ -157,7 +157,7 @@ ISR(ADC_vect) { // IRQ handler
 	if (current_adc < N_PWMLEDS)
 		pwmled_adc(current_adc, adc_sum);
 	if (current_adc == AMBIENT_ADC)
-		ambient_adc(adcval);
+		ambient_adc(adc_sum);
 	if (current_adc == BATTERY_ADC)
 		battery_adc(adcval);