105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
#ifndef _INA226_H_
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#define _INA226_H_
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#include <stdint.h>
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#include "esp_err.h"
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#include "driver/i2c_master.h"
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typedef enum
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{
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INA226_AVERAGES_1 = 0b000,
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INA226_AVERAGES_4 = 0b001,
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INA226_AVERAGES_16 = 0b010,
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INA226_AVERAGES_64 = 0b011,
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INA226_AVERAGES_128 = 0b100,
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INA226_AVERAGES_256 = 0b101,
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INA226_AVERAGES_512 = 0b110,
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INA226_AVERAGES_1024 = 0b111
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} ina226_averages_t;
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typedef enum
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{
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INA226_BUS_CONV_TIME_140_US = 0b000,
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INA226_BUS_CONV_TIME_204_US = 0b001,
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INA226_BUS_CONV_TIME_332_US = 0b010,
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INA226_BUS_CONV_TIME_588_US = 0b011,
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INA226_BUS_CONV_TIME_1100_US = 0b100,
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INA226_BUS_CONV_TIME_2116_US = 0b101,
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INA226_BUS_CONV_TIME_4156_US = 0b110,
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INA226_BUS_CONV_TIME_8244_US = 0b111
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} ina226_bus_conv_time_t;
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typedef enum
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{
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INA226_SHUNT_CONV_TIME_140_US = 0b000,
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INA226_SHUNT_CONV_TIME_204_US = 0b001,
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INA226_SHUNT_CONV_TIME_332_US = 0b010,
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INA226_SHUNT_CONV_TIME_588_US = 0b011,
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INA226_SHUNT_CONV_TIME_1100_US = 0b100,
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INA226_SHUNT_CONV_TIME_2116_US = 0b101,
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INA226_SHUNT_CONV_TIME_4156_US = 0b110,
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INA226_SHUNT_CONV_TIME_8244_US = 0b111
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} ina226_shunt_conv_time_t;
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typedef enum
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{
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INA226_MODE_POWER_DOWN = 0b000,
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INA226_MODE_SHUNT_TRIG = 0b001,
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INA226_MODE_BUS_TRIG = 0b010,
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INA226_MODE_SHUNT_BUS_TRIG = 0b011,
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INA226_MODE_ADC_OFF = 0b100,
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INA226_MODE_SHUNT_CONT = 0b101,
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INA226_MODE_BUS_CONT = 0b110,
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INA226_MODE_SHUNT_BUS_CONT = 0b111,
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} ina226_mode_t;
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typedef enum
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{
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INA226_ALERT_SHUNT_OVER_VOLTAGE = 0xf,
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INA226_ALERT_SHUNT_UNDER_VOLTAGE = 0xe,
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INA226_ALERT_BUS_OVER_VOLTAGE = 0xd,
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INA226_ALERT_BUS_UNDER_VOLTAGE = 0xc,
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INA226_ALERT_POWER_OVER_LIMIT = 0xb,
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INA226_ALERT_CONVERSION_READY = 0xa,
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INA226_ALERT_FUNCTION_FLAG = 0x4,
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INA226_ALERT_CONVERSION_READY_FLAG = 0x3,
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INA226_ALERT_MATH_OVERFLOW_FLAG = 0x2,
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INA226_ALERT_POLARITY = 0x1,
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INA226_ALERT_LATCH_ENABLE = 0x0
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} ina226_alert_t;
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typedef struct
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{
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i2c_port_t i2c_port;
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int i2c_addr;
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int timeout_ms;
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ina226_averages_t averages;
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ina226_bus_conv_time_t bus_conv_time;
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ina226_shunt_conv_time_t shunt_conv_time;
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ina226_mode_t mode;
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float r_shunt; /* ohm */
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float max_current; /* amps */
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} ina226_config_t;
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typedef struct
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{
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i2c_master_dev_handle_t dev_handle;
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int timeout_ms;
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float current_lsb;
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float power_lsb;
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} ina226_t;
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esp_err_t ina226_get_manufacturer_id(ina226_t *device, uint16_t *manufacturer_id);
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esp_err_t ina226_get_die_id(ina226_t *device, uint16_t *die_id);
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esp_err_t ina226_get_shunt_voltage(ina226_t *device, float *voltage);
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esp_err_t ina226_get_bus_voltage(ina226_t *device, float *voltage);
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esp_err_t ina226_get_current(ina226_t *device, float *current);
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esp_err_t ina226_get_power(ina226_t *device, float *power);
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esp_err_t ina226_get_alert_mask(ina226_t *device, ina226_alert_t *alert_mask);
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esp_err_t ina226_set_alert_mask(ina226_t *device, ina226_alert_t alert_mask);
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esp_err_t ina226_set_alert_limit(ina226_t *device, float voltage);
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esp_err_t ina226_init(ina226_t *device, i2c_master_dev_handle_t dev_handle, const ina226_config_t *config);
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#endif |