1 /* 2 * Copyright 2021 Google LLC 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_ADC_ADC_H_ 7 #define ZEPHYR_INCLUDE_DT_BINDINGS_ADC_ADC_H_ 8 9 /* 10 * Provide the BIT_MASK() macro for when this file is included from 11 * devicetrees. 12 */ 13 #ifndef BIT_MASK 14 #define BIT_MASK(n) ((1 << (n)) - 1) 15 #endif 16 17 /** Acquisition time is expressed in microseconds. */ 18 #define ADC_ACQ_TIME_MICROSECONDS (1) 19 /** Acquisition time is expressed in nanoseconds. */ 20 #define ADC_ACQ_TIME_NANOSECONDS (2) 21 /** Acquisition time is expressed in ADC ticks. */ 22 #define ADC_ACQ_TIME_TICKS (3) 23 /** Macro for composing the acquisition time value in given units. */ 24 #define ADC_ACQ_TIME(unit, value) (((unit) << 14) | ((value) & BIT_MASK(14))) 25 /** Value indicating that the default acquisition time should be used. */ 26 #define ADC_ACQ_TIME_DEFAULT 0 27 #define ADC_ACQ_TIME_MAX BIT_MASK(14) 28 29 #define ADC_ACQ_TIME_UNIT(time) (((time) >> 14) & BIT_MASK(2)) 30 #define ADC_ACQ_TIME_VALUE(time) ((time) & BIT_MASK(14)) 31 32 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_ADC_ADC_H_ */ 33
