X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=firmware%2Fadc.c;h=f5d846f2b21d0340bd8f3411a1d214db5ae04583;hb=5742ccfd6f39275f7e87795331ca465b776d5f7d;hp=fa0782c4248c6ee67917901cc1340dedfefea087;hpb=295d6d70b233e295c5080c998b9f54306c1170cf;p=bike-lights.git

diff --git a/firmware/adc.c b/firmware/adc.c
index fa0782c..f5d846f 100644
--- a/firmware/adc.c
+++ b/firmware/adc.c
@@ -21,15 +21,15 @@ static void inline setup_mux(unsigned char n)
 	switch (n) {
 	case 0: // pwmled 1: 1.1V, ADC0,1 (PA0,1), gain 20
 		ADMUX = _BV(REFS1) | _BV(MUX3) | _BV(MUX1) | _BV(MUX0);
-		sum_shift = 3; // 8 measurements
+		sum_shift = PWMLED_ADC_SHIFT;
 		break;
 	case 1: // pwmled 2: 1.1V, ADC2,1 (PA2,1), gain 20
 		ADMUX = _BV(REFS1) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1);
-		sum_shift = 3; // 8 measurements
+		sum_shift = PWMLED_ADC_SHIFT;
 		break;
 	case 2: // pwmled 3: 1.1V, ADC4 (PA5), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2);
-		sum_shift = 3; // 8 measurements
+		sum_shift = PWMLED_ADC_SHIFT;
 		break;
 	case 3: // ambient light: 1.1V, ADC5 (PA6), single-ended
 		ADMUX = _BV(REFS1) | _BV(MUX2) | _BV(MUX0);
@@ -51,15 +51,15 @@ static void inline setup_mux(unsigned char n)
 
 static void start_next_adc()
 {
-	if (current_adc > 0) {
+	if (current_adc > 0)
 		current_adc--;
-		// set up mux, start one-shot conversion
-		setup_mux(current_adc);
-		ADCSRA |= _BV(ADSC);
-	} else {
-		current_adc = NUM_ADCS;
+	else
 		// TODO: kick the watchdog here.
-	}
+		current_adc = NUM_ADCS-1;
+
+	// set up mux, start one-shot conversion
+	setup_mux(current_adc);
+	ADCSRA |= _BV(ADSC);
 }
 
 void init_adc()
@@ -100,6 +100,8 @@ void init_adc()
 	}
 
 	ADCSRA |= _BV(ADIE); // enable IRQ
+
+	start_next_adc();
 }
 
 void susp_adc()
@@ -151,13 +153,3 @@ ISR(ADC_vect) { // IRQ handler
 	start_next_adc();
 }
 
-void timer_start_adcs()
-{
-	if (current_adc == NUM_ADCS) // Don't start if in progress
-		start_next_adc();
-#if 0
-	else
-		log_byte(0x99);
-#endif
-}
-