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Some useful macros for ADC module #1513

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Some useful macros for ADC module #1513

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6 changes: 6 additions & 0 deletions src/rp2_common/hardware_adc/include/hardware/adc.h
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Expand Up @@ -49,6 +49,12 @@
#define PARAM_ASSERTIONS_ENABLED_ADC 0
#endif

#define ADC_REFERENCE_VOLTAGE 3.3
#define ADC_MAX 4095

/* Converts GPIO pin number to ADC channel */
#define ADC_PIN_TO_CHANNEL(Pin) ((Pin) - (26))

#ifdef __cplusplus
extern "C" {
#endif
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