0bd304f9d9
Add the new driver for INA237 variant which is quite similar to the already supported INA230. Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* Copyright (c) 2021 Grinn
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
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#define ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_
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#include <dt-bindings/dt-util.h>
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/* Operating Mode */
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#define INA237_OPER_MODE_SHUTDOWN 0x00
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#define INA237_OPER_MODE_TRIG_BUS_VOLTAGE_SINGLE_SHOT 0x01
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#define INA237_OPER_MODE_TRIG_SHUNT_VOLTAGE_TRIG_SINGLE_SHOT 0x02
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#define INA237_OPER_MODE_TRIG_SHUNT_BUS_VOLTAGE_SINGLE_SHOT 0x03
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#define INA237_OPER_MODE_TRIG_TEMP_SINGLE_SHOT 0x05
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#define INA237_OPER_MODE_TRIG_TEMP_BUS_SINGLE_SHOT 0x06
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#define INA237_OPER_MODE_TRIG_TEMP_SHUNT_SINGLE_SHOT 0x07
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#define INA237_OPER_MODE_CONT_BUS_VOLTAGE 0x09
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#define INA237_OPER_MODE_CONT_SHUNT_VOLTAGE 0x0A
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#define INA237_OPER_MODE_CONT_SHUNT_BUS_VOLTAGE 0x0B
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#define INA237_OPER_MODE_CONT_TEMP 0x0C
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#define INA237_OPER_MODE_CONT_BUS_VOLTAGE_TEMP 0x0D
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#define INA237_OPER_MODE_CONT_TEMP_SHUNT_VOLTAGE 0x0E
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#define INA237_OPER_MODE_CONT_BUS_SHUNT_VOLTAGE_TEMP 0x0F
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/* Conversion time for bus, shunt and temp in micro-seconds */
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#define INA237_CONV_TIME_50 0x00
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#define INA237_CONV_TIME_84 0x01
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#define INA237_CONV_TIME_150 0x02
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#define INA237_CONV_TIME_280 0x03
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#define INA237_CONV_TIME_540 0x04
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#define INA237_CONV_TIME_1052 0x05
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#define INA237_CONV_TIME_2074 0x06
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#define INA237_CONV_TIME_4120 0x07
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/* Averaging Mode */
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#define INA237_AVG_MODE_1 0x00
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#define INA237_AVG_MODE_4 0x01
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#define INA237_AVG_MODE_16 0x02
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#define INA237_AVG_MODE_64 0x03
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#define INA237_AVG_MODE_128 0x04
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#define INA237_AVG_MODE_256 0x05
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#define INA237_AVG_MODE_512 0x06
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#define INA237_AVG_MODE_1024 0x07
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/* Reset Mode */
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#define INA237_RST_NORMAL_OPERATION 0x00
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#define INA237_RST_SYSTEM_RESET 0x01
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/* Delay for initial ADC conversion in steps of 2 ms */
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#define INA237_INIT_ADC_DELAY_0_S 0x00
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#define INA237_INIT_ADC_DELAY_2_MS 0x01
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#define INA237_INIT_ADC_DELAY_510_MS 0xFF
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/* Shunt full scale range selection across IN+ and IN–. */
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#define INA237_ADC_RANGE_163_84 0x00
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#define INA237_ADC_RANGE_40_96 0x01
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/**
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* @brief Macro for creating the INA237 configuration value
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*
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* @param rst_mode Reset mode.
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* @param convdly Delay for initial ADC conversion in steps of 2 ms.
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* @param adc_range Shunt full scale range selection across IN+ and IN–.
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*
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*/
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#define INA237_CONFIG(rst_mode, \
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convdly, \
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adc_range) \
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(((rst_mode) << 15) | ((convdly) << 6) | ((adc_range) << 4))
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/**
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* @brief Macro for creating the INA237 ADC configuration value
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*
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* @param mode Operating mode.
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* @param vshct Conversion time for shunt voltage.
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* @param vbusct Conversion time for bus voltage.
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* @param vtct Conversion time for temperature.
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* @param avg Averaging mode.
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*/
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#define INA237_ADC_CONFIG(mode, \
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vshct, \
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vbusct, \
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vtct, \
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avg) \
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(((mode) << 12) | ((vbusct) << 9) | ((vshct) << 6) | ((vtct) << 3) | (avg))
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#endif /* ZEPHYR_INCLUDE_DT_BINDINGS_INA237_H_ */
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