X-Git-Url: https://robinkrens.nl/gitweb/?p=lra-as-sensor;a=blobdiff_plain;f=hbc.c;fp=hbc.c;h=30a17691cd17de494746474734a6df387d38a9d8;hp=38332a180a64a9eec360a56d3f095eb79d50dbd8;hb=5fcb373521bd82b6689cf119587905850a67b8fe;hpb=f99860f16348c1622450bb81db26a14ceb795a87

diff --git a/hbc.c b/hbc.c
index 38332a1..30a1769 100644
--- a/hbc.c
+++ b/hbc.c
@@ -7,12 +7,12 @@
 #include <avr/power.h>
 #include <avr/interrupt.h>
 #include <util/delay.h>
-#include "haptic.h"
 	
 ISR(SIG_COMPARATOR)
 {
 	if (ACSR & (1 << ACO)) {
 		PORTB |= (1 << PB4);
+		/* turn of comparator on detection */
 		ACSR &= ~(1 << ACIE);
 	} else {
 		PORTB &= ~(1 << PB4);
@@ -31,9 +31,6 @@ static void init_board(void)
 {
 	power_adc_disable();
 	wdt_disable();
-	/* enable interal reference for 
-	 * comparator 
-	 * When the bandgap reference is connected to the Analog Comparator (by setting the ACBG bit in ACSR). */
 }
 
 static void set_ref_voltage(void)
@@ -52,11 +49,14 @@ static void config_comparator(void)
 	ADCSRA = 0;
 	ADCSRB |= (1 << ACME); /* multiplex enable */
 	
-	//ADMUX |= (1 << MUX0); /* ADC1 as negative input */
+	/* Use admux to set alternative negative pin */
+	//ADMUX |= (1 << MUX0);
 	
+	/* enable interal reference for 
+	 * comparator 
+	 * When the bandgap reference is connected to the Analog Comparator (by setting the ACBG bit in ACSR). */
 	ACSR &= ~(1 << ACD); /* enable comparator */
 	ACSR |= (1 << ACBG);
-	//ACSR |= (1 << ACIS1) | (1 << ACIS0);
 
 	DIDR0 |= (1 << AIN1D) | (1 << AIN0D);
 
@@ -68,10 +68,8 @@ int main(void)
 	init_board();
 
 	DDRB |= (1 << DDB4);
-	//PORTB |= (1 << PB1);
 
 	cli();
-	//set_ref_voltage();
 	config_comparator();
 	sei();
 	switch_idle();