X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=tinyboard.git;a=blobdiff_plain;f=projects%2Fstep-up%2Fadc.c;h=fc4c7caac3a201b3526c2f5a4908aabc24c5f67b;hp=2bd4bfff81804ad3ad00d87fb790ea7c1f9da269;hb=37d45fd92b03b610195d7d6227140672ccc17b2b;hpb=b02a7f779bb5da598bab17456d0afda65adc863b

diff --git a/projects/step-up/adc.c b/projects/step-up/adc.c
index 2bd4bff..fc4c7ca 100644
--- a/projects/step-up/adc.c
+++ b/projects/step-up/adc.c
@@ -1,5 +1,6 @@
 #include <avr/io.h>
 #include <avr/interrupt.h>
+#include <avr/power.h>
 #include <avr/sleep.h>
 
 #include "lights.h"
@@ -105,6 +106,9 @@ void init_adc()
 	current_slow_adc = NUM_ADCS;
 	current_adc = 0;
 
+	power_adc_enable();
+	ACSR |= _BV(ACD);	// but disable the analog comparator
+
 	ADCSRA = _BV(ADEN)			// enable
 		| _BV(ADPS1) | _BV(ADPS0)	// CLK/8 = 125 kHz
 		// | _BV(ADPS2)			// CLK/16 = 62.5 kHz