drivers/sensor/ina23x/ina237.c - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright 2021 Grinn
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 #define DT_DRV_COMPAT ti_ina237

 #include "ina237.h"
 #include "ina23x_common.h"

 #include <zephyr/logging/log.h>
 #include <zephyr/drivers/sensor.h>
 #include <zephyr/dt-bindings/sensor/ina237.h>
 #include <zephyr/sys/byteorder.h>

 LOG_MODULE_REGISTER(INA237, CONFIG_SENSOR_LOG_LEVEL);

 /** @brief Calibration scaling value (scaled by 10^-5) */
 #define INA237_CAL_SCALING 8192U

 /** @brief The LSB value for the bus voltage register, in microvolts/LSB. */
 #define INA237_BUS_VOLTAGE_UV_LSB 3125

 /** @brief Power scaling (scaled by 10) */
 #define INA237_POWER_SCALING 2

 static int ina237_channel_get(const struct device *dev,
 			      enum sensor_channel chan,
 			      struct sensor_value *val)
 {
 	struct ina237_data *data = dev->data;
 	const struct ina237_config *config = dev->config;
 	uint32_t bus_uv, current_ua, power_uw;
 	int32_t sign;

 	switch (chan) {
 	case SENSOR_CHAN_VOLTAGE:
 		bus_uv = data->bus_voltage * INA237_BUS_VOLTAGE_UV_LSB;

 		val->val1 = bus_uv / 1000000U;
 		val->val2 = bus_uv % 1000000U;
 		break;

 	case SENSOR_CHAN_CURRENT:
 		if (data->current & INA23X_CURRENT_SIGN_BIT) {
 			current_ua = ~data->current + 1U;
 			sign = -1;
 		} else {
 			current_ua = data->current;
 			sign = 1;
 		}

 		/* see datasheet "Current and Power calculations" section */
 		current_ua = current_ua * config->current_lsb;

 		/* convert to fractional amperes */
 		val->val1 = sign * (int32_t)(current_ua / 1000000U);
 		val->val2 = sign * (int32_t)(current_ua % 1000000U);
 		break;

 	case SENSOR_CHAN_POWER:
 		/* see datasheet "Current and Power calculations" section */
 		power_uw = (data->power * INA237_POWER_SCALING *
 			    config->current_lsb) / 10000U;

 		/* convert to fractional watts */
 		val->val1 = (int32_t)(power_uw / 1000000U);
 		val->val2 = (int32_t)(power_uw % 1000000U);
 		break;

 	default:
 		return -ENOTSUP;
 	}

 	return 0;
 }

 /**
  * @brief sensor operation mode check
  *
  * @retval true if set or false if not set
  */
 static bool ina237_is_triggered_mode_set(const struct device *dev)
 {
 	const struct ina237_config *config = dev->config;

 	uint8_t mode = (config->adc_config & GENMASK(15, 12)) >> 12;

 	switch (mode) {
 	case INA237_OPER_MODE_BUS_VOLTAGE_TRIG:
 	case INA237_OPER_MODE_SHUNT_VOLTAGE_TRIG:
 	case INA237_OPER_MODE_SHUNT_BUS_VOLTAGE_TRIG:
 	case INA237_OPER_MODE_TEMP_TRIG:
 	case INA237_OPER_MODE_TEMP_BUS_VOLTAGE_TRIG:
 	case INA237_OPER_MODE_TEMP_SHUNT_VOLTAGE_TRIG:
 	case INA237_OPER_MODE_BUS_SHUNT_VOLTAGE_TEMP_TRIG:
 		return true;
 	default:
 		return false;
 	}
 }

 /**
  * @brief request for one shot measurement
  *
  * @retval 0 for success
  * @retval negative errno code on fail
  */
 static int ina237_trigg_one_shot_request(const struct device *dev)
 {
 	const struct ina237_config *config = dev->config;
 	int ret;

 	ret = ina23x_reg_write(&config->bus, INA237_REG_ADC_CONFIG, config->adc_config);
 	if (ret < 0) {
 		LOG_ERR("Failed to write ADC configuration register!");
 		return ret;
 	}

 	return 0;
 }

 /**
  * @brief sensor data read
  *
  * @retval 0 for success
  * @retval -EIO in case of input / output error
  */
 static int ina237_read_data(const struct device *dev)
 {
 	struct ina237_data *data = dev->data;
 	const struct ina237_config *config = dev->config;
 	int ret;

 	if ((data->chan == SENSOR_CHAN_ALL) || (data->chan == SENSOR_CHAN_VOLTAGE)) {
 		ret = ina23x_reg_read_16(&config->bus, INA237_REG_BUS_VOLT, &data->bus_voltage);
 		if (ret < 0) {
 			LOG_ERR("Failed to read bus voltage");
 			return ret;
 		}
 	}

 	if ((data->chan == SENSOR_CHAN_ALL) || (data->chan == SENSOR_CHAN_CURRENT)) {
 		ret = ina23x_reg_read_16(&config->bus, INA237_REG_CURRENT, &data->current);
 		if (ret < 0) {
 			LOG_ERR("Failed to read current");
 			return ret;
 		}
 	}

 	if ((data->chan == SENSOR_CHAN_ALL) || (data->chan == SENSOR_CHAN_POWER)) {
 		ret = ina23x_reg_read_24(&config->bus, INA237_REG_POWER, &data->power);
 		if (ret < 0) {
 			LOG_ERR("Failed to read power");
 			return ret;
 		}
 	}

 	return 0;
 }

 /**
  * @brief sensor sample fetch
  *
  * @retval 0 for success
  * @retval negative errno code on fail
  */
 static int ina237_sample_fetch(const struct device *dev,
 			       enum sensor_channel chan)
 {
 	struct ina237_data *data = dev->data;

 	if (chan != SENSOR_CHAN_ALL &&
 	    chan != SENSOR_CHAN_VOLTAGE &&
 	    chan != SENSOR_CHAN_CURRENT &&
 	    chan != SENSOR_CHAN_POWER) {
 		return -ENOTSUP;
 	}

 	data->chan = chan;

 	if (ina237_is_triggered_mode_set(dev)) {
 		return ina237_trigg_one_shot_request(dev);
 	} else {
 		return ina237_read_data(dev);
 	}
 }

 static int ina237_attr_set(const struct device *dev, enum sensor_channel chan,
 			   enum sensor_attribute attr,
 			   const struct sensor_value *val)
 {
 	const struct ina237_config *config = dev->config;
 	uint16_t data = val->val1;

 	switch (attr) {
 	case SENSOR_ATTR_CONFIGURATION:
 		return ina23x_reg_write(&config->bus, INA237_REG_CONFIG, data);
 	case SENSOR_ATTR_CALIBRATION:
 		return ina23x_reg_write(&config->bus, INA237_REG_CALIB, data);
 	default:
 		LOG_ERR("INA237 attribute not supported.");
 		return -ENOTSUP;
 	}
 }

 static int ina237_attr_get(const struct device *dev, enum sensor_channel chan,
 			   enum sensor_attribute attr,
 			   struct sensor_value *val)
 {
 	const struct ina237_config *config = dev->config;
 	uint16_t data;
 	int ret;

 	switch (attr) {
 	case SENSOR_ATTR_CONFIGURATION:
 		ret = ina23x_reg_read_16(&config->bus, INA237_REG_CONFIG, &data);
 		if (ret < 0) {
 			return ret;
 		}
 		break;
 	case SENSOR_ATTR_CALIBRATION:
 		ret = ina23x_reg_read_16(&config->bus, INA237_REG_CALIB, &data);
 		if (ret < 0) {
 			return ret;
 		}
 		break;
 	default:
 		LOG_ERR("INA237 attribute not supported.");
 		return -ENOTSUP;
 	}

 	val->val1 = data;
 	val->val2 = 0;

 	return 0;
 }

 static int ina237_calibrate(const struct device *dev)
 {
 	const struct ina237_config *config = dev->config;
 	uint16_t val;
 	int ret;

 	/* see datasheet "Current and Power calculations" section */
 	val = (INA237_CAL_SCALING * config->current_lsb * config->rshunt) /
 	       10000000U;

 	ret = ina23x_reg_write(&config->bus, INA237_REG_CALIB, val);
 	if (ret < 0) {
 		return ret;
 	}

 	return 0;
 }

 static void ina237_trigger_work_handler(struct k_work *work)
 {
 	struct ina23x_trigger *trigg = CONTAINER_OF(work, struct ina23x_trigger, conversion_work);
 	struct ina237_data *data = CONTAINER_OF(trigg, struct ina237_data, trigger);
 	const struct ina237_config *config = data->dev->config;
 	struct sensor_trigger ina237_trigger;
 	int ret;
 	uint16_t reg_alert;

 	/* Read reg alert to clear alerts */
 	ret = ina23x_reg_read_16(&config->bus, INA237_REG_ALERT, &reg_alert);
 	if (ret < 0) {
 		LOG_ERR("Failed to read alert register!");
 		return;
 	}

 	ret = ina237_read_data(data->dev);
 	if (ret < 0) {
 		LOG_WRN("Unable to read data, ret %d", ret);
 	}

 	if (data->trigger.handler_alert) {
 		ina237_trigger.type = SENSOR_TRIG_DATA_READY;
 		data->trigger.handler_alert(data->dev, &ina237_trigger);
 	}
 }

 static int ina237_init(const struct device *dev)
 {
 	struct ina237_data *data = dev->data;
 	const struct ina237_config *config = dev->config;
 	uint16_t id;
 	int ret;

 	if (!device_is_ready(config->bus.bus)) {
 		LOG_ERR("I2C bus %s is not ready", config->bus.bus->name);
 		return -ENODEV;
 	}

 	data->dev = dev;

 	ret = ina23x_reg_read_16(&config->bus, INA237_REG_MANUFACTURER_ID, &id);
 	if (ret < 0) {
 		LOG_ERR("Failed to read manufacturer register!");
 		return ret;
 	}

 	if (id != INA237_MANUFACTURER_ID) {
 		LOG_ERR("Manufacturer ID doesn't match!");
 		return -ENODEV;
 	}

 	ret = ina23x_reg_write(&config->bus, INA237_REG_ADC_CONFIG, config->adc_config);
 	if (ret < 0) {
 		LOG_ERR("Failed to write ADC configuration register!");
 		return ret;
 	}

 	ret = ina23x_reg_write(&config->bus, INA237_REG_CONFIG, config->config);
 	if (ret < 0) {
 		LOG_ERR("Failed to write configuration register!");
 		return ret;
 	}

 	ret = ina237_calibrate(dev);
 	if (ret < 0) {
 		LOG_ERR("Failed to write calibration register!");
 		return ret;
 	}

 	if (ina237_is_triggered_mode_set(dev)) {
 		if ((config->alert_config & GENMASK(15, 14)) != GENMASK(15, 14)) {
 			LOG_ERR("ALATCH and CNVR bits must be enabled in triggered mode!");
 			return -ENODEV;
 		}

 		k_work_init(&data->trigger.conversion_work, ina237_trigger_work_handler);

 		ret = ina23x_trigger_mode_init(&data->trigger, &config->alert_gpio);
 		if (ret < 0) {
 			LOG_ERR("Failed to init trigger mode");
 			return ret;
 		}

 		ret = ina23x_reg_write(&config->bus, INA237_REG_ALERT, config->alert_config);
 		if (ret < 0) {
 			LOG_ERR("Failed to write alert configuration register!");
 			return ret;
 		}
 	}

 	return 0;
 }

 static int ina237_trigger_set(const struct device *dev,
 			      const struct sensor_trigger *trig,
 			      sensor_trigger_handler_t handler)
 {
 	ARG_UNUSED(trig);
 	struct ina237_data *ina237 = dev->data;

 	if (!ina237_is_triggered_mode_set(dev)) {
 		return -ENOTSUP;
 	}

 	ina237->trigger.handler_alert = handler;

 	return 0;
 }

 static const struct sensor_driver_api ina237_driver_api = {
 	.attr_set = ina237_attr_set,
 	.attr_get = ina237_attr_get,
 	.trigger_set = ina237_trigger_set,
 	.sample_fetch = ina237_sample_fetch,
 	.channel_get = ina237_channel_get,
 };

 #define INA237_DRIVER_INIT(inst)						\
 	static struct ina237_data ina237_data_##inst;				\
 	static const struct ina237_config ina237_config_##inst = {		\
 		.bus = I2C_DT_SPEC_INST_GET(inst),				\
 		.config = DT_INST_PROP(inst, config),				\
 		.adc_config = DT_INST_PROP(inst, adc_config),			\
 		.current_lsb = DT_INST_PROP(inst, current_lsb_microamps),	\
 		.rshunt = DT_INST_PROP(inst, rshunt_milliohms),			\
 		.alert_config = DT_INST_PROP_OR(inst, alert_config, 0x01),	\
 		.alert_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, alert_gpios, {0}),	\
 	};							    \
 	SENSOR_DEVICE_DT_INST_DEFINE(inst,			    \
 			      &ina237_init,			    \
 			      NULL,				    \
 			      &ina237_data_##inst,		    \
 			      &ina237_config_##inst,		    \
 			      POST_KERNEL,			    \
 			      CONFIG_SENSOR_INIT_PRIORITY,	    \
 			      &ina237_driver_api);

 DT_INST_FOREACH_STATUS_OKAY(INA237_DRIVER_INIT)
	/*
	* Copyright 2021 Grinn
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	#define DT_DRV_COMPAT ti_ina237

	#include "ina237.h"
	#include "ina23x_common.h"

	#include <zephyr/logging/log.h>
	#include <zephyr/drivers/sensor.h>
	#include <zephyr/dt-bindings/sensor/ina237.h>
	#include <zephyr/sys/byteorder.h>

	LOG_MODULE_REGISTER(INA237, CONFIG_SENSOR_LOG_LEVEL);

	/** @brief Calibration scaling value (scaled by 10^-5) */
	#define INA237_CAL_SCALING 8192U

	/** @brief The LSB value for the bus voltage register, in microvolts/LSB. */
	#define INA237_BUS_VOLTAGE_UV_LSB 3125

	/** @brief Power scaling (scaled by 10) */
	#define INA237_POWER_SCALING 2

	static int ina237_channel_get(const struct device *dev,
	enum sensor_channel chan,
	struct sensor_value *val)
	{
	struct ina237_data *data = dev->data;
	const struct ina237_config *config = dev->config;
	uint32_t bus_uv, current_ua, power_uw;
	int32_t sign;

	switch (chan) {
	case SENSOR_CHAN_VOLTAGE:
	bus_uv = data->bus_voltage * INA237_BUS_VOLTAGE_UV_LSB;

	val->val1 = bus_uv / 1000000U;
	val->val2 = bus_uv % 1000000U;
	break;

	case SENSOR_CHAN_CURRENT:
	if (data->current & INA23X_CURRENT_SIGN_BIT) {
	current_ua = ~data->current + 1U;
	sign = -1;
	} else {
	current_ua = data->current;
	sign = 1;
	}

	/* see datasheet "Current and Power calculations" section */
	current_ua = current_ua * config->current_lsb;

	/* convert to fractional amperes */
	val->val1 = sign * (int32_t)(current_ua / 1000000U);
	val->val2 = sign * (int32_t)(current_ua % 1000000U);
	break;

	case SENSOR_CHAN_POWER:
	/* see datasheet "Current and Power calculations" section */
	power_uw = (data->power * INA237_POWER_SCALING *
	config->current_lsb) / 10000U;

	/* convert to fractional watts */
	val->val1 = (int32_t)(power_uw / 1000000U);
	val->val2 = (int32_t)(power_uw % 1000000U);
	break;

	default:
	return -ENOTSUP;
	}

	return 0;
	}

	/**
	* @brief sensor operation mode check
	*
	* @retval true if set or false if not set
	*/
	static bool ina237_is_triggered_mode_set(const struct device *dev)
	{
	const struct ina237_config *config = dev->config;

	uint8_t mode = (config->adc_config & GENMASK(15, 12)) >> 12;

	switch (mode) {
	case INA237_OPER_MODE_BUS_VOLTAGE_TRIG:
	case INA237_OPER_MODE_SHUNT_VOLTAGE_TRIG:
	case INA237_OPER_MODE_SHUNT_BUS_VOLTAGE_TRIG:
	case INA237_OPER_MODE_TEMP_TRIG:
	case INA237_OPER_MODE_TEMP_BUS_VOLTAGE_TRIG:
	case INA237_OPER_MODE_TEMP_SHUNT_VOLTAGE_TRIG:
	case INA237_OPER_MODE_BUS_SHUNT_VOLTAGE_TEMP_TRIG:
	return true;
	default:
	return false;
	}
	}

	/**
	* @brief request for one shot measurement
	*
	* @retval 0 for success
	* @retval negative errno code on fail
	*/
	static int ina237_trigg_one_shot_request(const struct device *dev)
	{
	const struct ina237_config *config = dev->config;
	int ret;

	ret = ina23x_reg_write(&config->bus, INA237_REG_ADC_CONFIG, config->adc_config);
	if (ret < 0) {
	LOG_ERR("Failed to write ADC configuration register!");
	return ret;
	}

	return 0;
	}

	/**
	* @brief sensor data read
	*
	* @retval 0 for success
	* @retval -EIO in case of input / output error
	*/
	static int ina237_read_data(const struct device *dev)
	{
	struct ina237_data *data = dev->data;
	const struct ina237_config *config = dev->config;
	int ret;

	if ((data->chan == SENSOR_CHAN_ALL) \|\| (data->chan == SENSOR_CHAN_VOLTAGE)) {
	ret = ina23x_reg_read_16(&config->bus, INA237_REG_BUS_VOLT, &data->bus_voltage);
	if (ret < 0) {
	LOG_ERR("Failed to read bus voltage");
	return ret;
	}
	}

	if ((data->chan == SENSOR_CHAN_ALL) \|\| (data->chan == SENSOR_CHAN_CURRENT)) {
	ret = ina23x_reg_read_16(&config->bus, INA237_REG_CURRENT, &data->current);
	if (ret < 0) {
	LOG_ERR("Failed to read current");
	return ret;
	}
	}

	if ((data->chan == SENSOR_CHAN_ALL) \|\| (data->chan == SENSOR_CHAN_POWER)) {
	ret = ina23x_reg_read_24(&config->bus, INA237_REG_POWER, &data->power);
	if (ret < 0) {
	LOG_ERR("Failed to read power");
	return ret;
	}
	}

	return 0;
	}

	/**
	* @brief sensor sample fetch
	*
	* @retval 0 for success
	* @retval negative errno code on fail
	*/
	static int ina237_sample_fetch(const struct device *dev,
	enum sensor_channel chan)
	{
	struct ina237_data *data = dev->data;

	if (chan != SENSOR_CHAN_ALL &&
	chan != SENSOR_CHAN_VOLTAGE &&
	chan != SENSOR_CHAN_CURRENT &&
	chan != SENSOR_CHAN_POWER) {
	return -ENOTSUP;
	}

	data->chan = chan;

	if (ina237_is_triggered_mode_set(dev)) {
	return ina237_trigg_one_shot_request(dev);
	} else {
	return ina237_read_data(dev);
	}
	}

	static int ina237_attr_set(const struct device *dev, enum sensor_channel chan,
	enum sensor_attribute attr,
	const struct sensor_value *val)
	{
	const struct ina237_config *config = dev->config;
	uint16_t data = val->val1;

	switch (attr) {
	case SENSOR_ATTR_CONFIGURATION:
	return ina23x_reg_write(&config->bus, INA237_REG_CONFIG, data);
	case SENSOR_ATTR_CALIBRATION:
	return ina23x_reg_write(&config->bus, INA237_REG_CALIB, data);
	default:
	LOG_ERR("INA237 attribute not supported.");
	return -ENOTSUP;
	}
	}

	static int ina237_attr_get(const struct device *dev, enum sensor_channel chan,
	enum sensor_attribute attr,
	struct sensor_value *val)
	{
	const struct ina237_config *config = dev->config;
	uint16_t data;
	int ret;

	switch (attr) {
	case SENSOR_ATTR_CONFIGURATION:
	ret = ina23x_reg_read_16(&config->bus, INA237_REG_CONFIG, &data);
	if (ret < 0) {
	return ret;
	}
	break;
	case SENSOR_ATTR_CALIBRATION:
	ret = ina23x_reg_read_16(&config->bus, INA237_REG_CALIB, &data);
	if (ret < 0) {
	return ret;
	}
	break;
	default:
	LOG_ERR("INA237 attribute not supported.");
	return -ENOTSUP;
	}

	val->val1 = data;
	val->val2 = 0;

	return 0;
	}

	static int ina237_calibrate(const struct device *dev)
	{
	const struct ina237_config *config = dev->config;
	uint16_t val;
	int ret;

	/* see datasheet "Current and Power calculations" section */
	val = (INA237_CAL_SCALING * config->current_lsb * config->rshunt) /
	10000000U;

	ret = ina23x_reg_write(&config->bus, INA237_REG_CALIB, val);
	if (ret < 0) {
	return ret;
	}

	return 0;
	}

	static void ina237_trigger_work_handler(struct k_work *work)
	{
	struct ina23x_trigger *trigg = CONTAINER_OF(work, struct ina23x_trigger, conversion_work);
	struct ina237_data *data = CONTAINER_OF(trigg, struct ina237_data, trigger);
	const struct ina237_config *config = data->dev->config;
	struct sensor_trigger ina237_trigger;
	int ret;
	uint16_t reg_alert;

	/* Read reg alert to clear alerts */
	ret = ina23x_reg_read_16(&config->bus, INA237_REG_ALERT, &reg_alert);
	if (ret < 0) {
	LOG_ERR("Failed to read alert register!");
	return;
	}

	ret = ina237_read_data(data->dev);
	if (ret < 0) {
	LOG_WRN("Unable to read data, ret %d", ret);
	}

	if (data->trigger.handler_alert) {
	ina237_trigger.type = SENSOR_TRIG_DATA_READY;
	data->trigger.handler_alert(data->dev, &ina237_trigger);
	}
	}

	static int ina237_init(const struct device *dev)
	{
	struct ina237_data *data = dev->data;
	const struct ina237_config *config = dev->config;
	uint16_t id;
	int ret;

	if (!device_is_ready(config->bus.bus)) {
	LOG_ERR("I2C bus %s is not ready", config->bus.bus->name);
	return -ENODEV;
	}

	data->dev = dev;

	ret = ina23x_reg_read_16(&config->bus, INA237_REG_MANUFACTURER_ID, &id);
	if (ret < 0) {
	LOG_ERR("Failed to read manufacturer register!");
	return ret;
	}

	if (id != INA237_MANUFACTURER_ID) {
	LOG_ERR("Manufacturer ID doesn't match!");
	return -ENODEV;
	}

	ret = ina23x_reg_write(&config->bus, INA237_REG_ADC_CONFIG, config->adc_config);
	if (ret < 0) {
	LOG_ERR("Failed to write ADC configuration register!");
	return ret;
	}

	ret = ina23x_reg_write(&config->bus, INA237_REG_CONFIG, config->config);
	if (ret < 0) {
	LOG_ERR("Failed to write configuration register!");
	return ret;
	}

	ret = ina237_calibrate(dev);
	if (ret < 0) {
	LOG_ERR("Failed to write calibration register!");
	return ret;
	}

	if (ina237_is_triggered_mode_set(dev)) {
	if ((config->alert_config & GENMASK(15, 14)) != GENMASK(15, 14)) {
	LOG_ERR("ALATCH and CNVR bits must be enabled in triggered mode!");
	return -ENODEV;
	}

	k_work_init(&data->trigger.conversion_work, ina237_trigger_work_handler);

	ret = ina23x_trigger_mode_init(&data->trigger, &config->alert_gpio);
	if (ret < 0) {
	LOG_ERR("Failed to init trigger mode");
	return ret;
	}

	ret = ina23x_reg_write(&config->bus, INA237_REG_ALERT, config->alert_config);
	if (ret < 0) {
	LOG_ERR("Failed to write alert configuration register!");
	return ret;
	}
	}

	return 0;
	}

	static int ina237_trigger_set(const struct device *dev,
	const struct sensor_trigger *trig,
	sensor_trigger_handler_t handler)
	{
	ARG_UNUSED(trig);
	struct ina237_data *ina237 = dev->data;

	if (!ina237_is_triggered_mode_set(dev)) {
	return -ENOTSUP;
	}

	ina237->trigger.handler_alert = handler;

	return 0;
	}

	static const struct sensor_driver_api ina237_driver_api = {
	.attr_set = ina237_attr_set,
	.attr_get = ina237_attr_get,
	.trigger_set = ina237_trigger_set,
	.sample_fetch = ina237_sample_fetch,
	.channel_get = ina237_channel_get,
	};

	#define INA237_DRIVER_INIT(inst) \
	static struct ina237_data ina237_data_##inst; \
	static const struct ina237_config ina237_config_##inst = { \
	.bus = I2C_DT_SPEC_INST_GET(inst), \
	.config = DT_INST_PROP(inst, config), \
	.adc_config = DT_INST_PROP(inst, adc_config), \
	.current_lsb = DT_INST_PROP(inst, current_lsb_microamps), \
	.rshunt = DT_INST_PROP(inst, rshunt_milliohms), \
	.alert_config = DT_INST_PROP_OR(inst, alert_config, 0x01), \
	.alert_gpio = GPIO_DT_SPEC_INST_GET_OR(inst, alert_gpios, {0}), \
	}; \
	SENSOR_DEVICE_DT_INST_DEFINE(inst, \
	&ina237_init, \
	NULL, \
	&ina237_data_##inst, \
	&ina237_config_##inst, \
	POST_KERNEL, \
	CONFIG_SENSOR_INIT_PRIORITY, \
	&ina237_driver_api);

	DT_INST_FOREACH_STATUS_OKAY(INA237_DRIVER_INIT)