ina237.h

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/*
 * Copyright (c) 2021 Grinn
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
#define ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
 
#include <zephyr/dt-bindings/dt-util.h>
 
/* Operating Mode */
#define INA237_CFG_HIGH_PRECISION                       BIT(4)
#define INA237_OPER_MODE_SHUTDOWN                       0x00
#define INA237_OPER_MODE_BUS_VOLTAGE_TRIG               0x01
#define INA237_OPER_MODE_SHUNT_VOLTAGE_TRIG             0x02
#define INA237_OPER_MODE_SHUNT_BUS_VOLTAGE_TRIG         0x03
#define INA237_OPER_MODE_TEMP_TRIG                      0x04
#define INA237_OPER_MODE_TEMP_BUS_VOLTAGE_TRIG          0x05
#define INA237_OPER_MODE_TEMP_SHUNT_VOLTAGE_TRIG        0x06
#define INA237_OPER_MODE_BUS_SHUNT_VOLTAGE_TEMP_TRIG    0x07
#define INA237_OPER_MODE_BUS_VOLTAGE_CONT               0x09
#define INA237_OPER_MODE_SHUNT_VOLTAGE_CONT             0x0A
#define INA237_OPER_MODE_SHUNT_BUS_VOLTAGE_CONT         0x0B
#define INA237_OPER_MODE_TEMP_CONT                      0x0C
#define INA237_OPER_MODE_BUS_VOLTAGE_TEMP_CONT          0x0D
#define INA237_OPER_MODE_TEMP_SHUNT_VOLTAGE_CONT        0x0E
#define INA237_OPER_MODE_BUS_SHUNT_VOLTAGE_TEMP_CONT    0x0F
 
/* Conversion time for bus, shunt and temp in micro-seconds */
#define INA237_CONV_TIME_50   0x00
#define INA237_CONV_TIME_84   0x01
#define INA237_CONV_TIME_150  0x02
#define INA237_CONV_TIME_280  0x03
#define INA237_CONV_TIME_540  0x04
#define INA237_CONV_TIME_1052 0x05
#define INA237_CONV_TIME_2074 0x06
#define INA237_CONV_TIME_4120 0x07
 
/* Averaging Mode */
#define INA237_AVG_MODE_1    0x00
#define INA237_AVG_MODE_4    0x01
#define INA237_AVG_MODE_16   0x02
#define INA237_AVG_MODE_64   0x03
#define INA237_AVG_MODE_128  0x04
#define INA237_AVG_MODE_256  0x05
#define INA237_AVG_MODE_512  0x06
#define INA237_AVG_MODE_1024 0x07
 
/* Reset Mode */
#define INA237_RST_NORMAL_OPERATION     0x00
#define INA237_RST_SYSTEM_RESET         0x01
 
/* Delay for initial ADC conversion in steps of 2 ms */
#define INA237_INIT_ADC_DELAY_0_S       0x00
#define INA237_INIT_ADC_DELAY_2_MS      0x01
#define INA237_INIT_ADC_DELAY_510_MS    0xFF
 
/* Shunt full scale range selection across IN+ and IN–. */
#define INA237_ADC_RANGE_163_84 0x00
#define INA237_ADC_RANGE_40_96  0x01
 
#define INA237_CONFIG(rst_mode, \
                      convdly, \
                      adc_range) \
        (((rst_mode) << 15) | ((convdly) << 6) | ((adc_range) << 4))
 
#define INA237_ADC_CONFIG(mode, \
                      vshct, \
                      vbusct, \
                      vtct, \
                      avg)  \
        (((mode) << 12) | ((vbusct) << 9) | ((vshct) << 6) | ((vtct) << 3) | (avg))
 
#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_ */