#include <cfg/compiler.h>
-#define ADC_MUX_MAXCH 7
+#if CPU_AVR_ATMEGA1280
+ /* 16 channels aivailable */
+ #define ADC_MUX_MAXCH 15
+#else
+ /* only 8 channels aivailable */
+ #define ADC_MUX_MAXCH 7
+#endif
#define ADC_BITS 10
void adc_hw_select_ch(uint8_t ch);