X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Favr%2Fdrv%2Fadc_avr.c;h=c42f8e3ba4f9c6ae67db243790e8542f38883575;hb=e444d916197e4345dd2bbd85800d8544c2699096;hp=9a6f2d395f96460673ebadeee7c5f2f84d4bbbab;hpb=8cdc1b5e85f12f6667843a2ad5d83cc0b5b4733c;p=bertos.git

diff --git a/bertos/cpu/avr/drv/adc_avr.c b/bertos/cpu/avr/drv/adc_avr.c
index 9a6f2d39..c42f8e3b 100644
--- a/bertos/cpu/avr/drv/adc_avr.c
+++ b/bertos/cpu/avr/drv/adc_avr.c
@@ -99,10 +99,28 @@
 void adc_hw_select_ch(uint8_t ch)
 {
 	/* Set to 0 all mux registers */
-	ADMUX &= ~(BV(MUX4) | BV(MUX3) | BV(MUX2) | BV(MUX1) | BV(MUX0));
+	#if CPU_AVR_ATMEGA8 || CPU_AVR_ATMEGA328P || CPU_AVR_ATMEGA168
+		ADMUX &= ~(BV(MUX3) | BV(MUX2) | BV(MUX1) | BV(MUX0));
+	#elif CPU_AVR_ATMEGA32 || CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA1281 \
+	      || CPU_AVR_ATMEGA1280
+		ADMUX &= ~(BV(MUX4) | BV(MUX3) | BV(MUX2) | BV(MUX1) | BV(MUX0));
+		#if CPU_AVR_ATMEGA1280
+			ADCSRB &= ~(BV(MUX5));
+		#endif
+	#else
+		#error Unknown CPU
+	#endif
 
-	/* Select channel, only first 8 channel modes are supported for now */
+	/* Select channel, only first 8 channel modes are supported */
 	ADMUX |= (ch & 0x07);
+
+	#if CPU_AVR_ATMEGA1280
+		/* Select channel, all 16 channels are supported */
+		if (ch > 0x07)
+			ADCSRB |= BV(MUX5);
+
+	#endif
+
 }