From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Fri, 14 Sep 2012 20:32:02 +0000 (+0200)
Subject: adc setting according to new pins.txt
X-Git-Tag: gerber-fab-20121029-1711~39
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=commitdiff_plain;h=990989cb746d45fbd2ebf634c6e7c19ce0cfe2df

adc setting according to new pins.txt
---

diff --git a/firmware/adc.c b/firmware/adc.c
index dc35d6b..5252ae7 100644
--- a/firmware/adc.c
+++ b/firmware/adc.c
@@ -5,16 +5,18 @@
 
 /* ADC numbering: PWM LEDs first, then ambient light sensor, battery sensor */
 static unsigned char adc_mux[] = { // pwmleds should be first
-	// 0: pwmled 0: 1.1V, ADC3 (PA4), single-ended
-	_BV(REFS1) | _BV(MUX1) | _BV(MUX0),
-	// 1: pwmled 1: 1.1V, ADC0,1 (PA0,1), gain 1 or 8
-	_BV(REFS1) | _BV(MUX3) | _BV(MUX2),
-	// 2: pwmled 2: 1.1V, ADC2,1 (PA2,1), gain 20 or 32
+	// 0: pwmled 1: 1.1V, ADC0,1 (PA0,1), gain 20
+	_BV(REFS1) | _BV(MUX3) | _BV(MUX1) | _BV(MUX0),
+	// 1: pwmled 2: 1.1V, ADC2,1 (PA2,1), gain 20
 	_BV(REFS1) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1),
-	// 3: ambient light: 1.1V, ADC4 (PA5), single-ended
-	_BV(REFS1) | _BV(MUX2),
-	// 4: batt voltage: 1.1V, ADC5 (PA6), single-ended
+	// 2: pwmled 3: 1.1V, ADC4 (PA5), single-ended
+	// _BV(REFS1) | _BV(MUX2),
+	// 2: for testing the same as 1
+	_BV(REFS1) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1),
+	// 3: ambient light: 1.1V, ADC5 (PA6), single-ended
 	_BV(REFS1) | _BV(MUX2) | _BV(MUX0),
+	// 4: batt voltage: 1.1V, ADC6 (PA7), single-ended
+	_BV(REFS1) | _BV(MUX2) | _BV(MUX1),
 };
 
 #define AMBIENT_ADC N_PWMLEDS
@@ -39,9 +41,9 @@ static void start_next_adc()
 
 	// all ADCs have been handled
 	current_adc = LAST_ADC;
+	// TODO: kick the watchdog here.
 	return;
 found:
-	// ADCSRB |= _BV(GSEL); // gain 8 or 32
 	ADMUX = adc_mux[current_adc]; // set up mux, start one-shot conversion
 	adc_ignore = 1; // ignore first reading after mux change
 	ADCSRA |= _BV(ADSC);
@@ -56,11 +58,11 @@ void init_adc()
 		| _BV(ADPS1) | _BV(ADPS0)	// CLK/8 = 125 kHz
 		// | _BV(ADPS2)			// CLK/16 = 62.5 kHz
 		;
-	ADCSRB |= _BV(GSEL); // gain 8 or 32
+	// ADCSRB |= _BV(GSEL); // gain 8 or 32
 
 	// Disable digital input on all bits used by ADC
-	DIDR0 = _BV(ADC0D) | _BV(ADC1D) | _BV(ADC2D) | _BV(ADC3D)
-		| _BV(ADC4D) | _BV(ADC5D);
+	DIDR0 = _BV(ADC0D) | _BV(ADC1D) | _BV(ADC2D)
+		| _BV(ADC4D) | _BV(ADC5D) | _BV(ADC6D);
 
 	ADCSRA |= _BV(ADSC);