From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 21 Nov 2012 22:06:04 +0000 (+0100)
Subject: adc: only 4 measurements for single-ended pwm
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=commitdiff_plain;h=fb8d751d7d12d162e6d755bf1f39fec26629d304

adc: only 4 measurements for single-ended pwm
---

diff --git a/firmware/adc.c b/firmware/adc.c
index 8bc171a..38f3677 100644
--- a/firmware/adc.c
+++ b/firmware/adc.c
@@ -28,7 +28,7 @@ static void inline setup_mux(unsigned char n)
 		break;
 	case 2: // pwmled 3: 1.1V, ADC4 (PA5), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2);
-		sum_shift = 3; // 8 measurements
+		sum_shift = 2; // 4 measurements
 		break;
 	case 3: // ambient light: 1.1V, ADC5 (PA6), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2) | _BV(MUX0);