/** * INA3221 driver for esp-open-rtos. * * Copyright (c) 2016 Zaltora (https://github.com/Zaltora) * * MIT Licensed as described in the file LICENSE * */ #ifndef INA3221_H_ #define INA3221_H_ #include #include #include #include #ifdef __cplusplus extern "C" { #endif #include "i2c/i2c.h" #define INA3221_ADDR_0 (0x40) // A0 to GND #define INA3221_ADDR_1 (0x41) // A0 to Vs+ #define INA3221_ADDR_2 (0x42) // A0 to SDA #define INA3221_ADDR_3 (0x43) // A0 to SCL #define BUS_NUMBER 3 //Number of shunt available #define INA3221_REG_CONFIG (0x00) #define INA3221_REG_SHUNTVOLTAGE_1 (0x01) #define INA3221_REG_BUSVOLTAGE_1 (0x02) #define INA3221_REG_CRITICAL_ALERT_1 (0x07) #define INA3221_REG_WARNING_ALERT_1 (0x08) #define INA3221_REG_SHUNT_VOLTAGE_SUM (0x0D) #define INA3221_REG_SHUNT_VOLTAGE_SUM_LIMIT (0x0E) #define INA3221_REG_MASK (0x0F) #define INA3221_REG_VALID_POWER_UPPER_LIMIT (0x10) #define INA3221_REG_VALID_POWER_LOWER_LIMIT (0x11) /* * Default register after reset */ #define INA3221_DEFAULT_CONFIG (0x7127) #define INA3221_DEFAULT_MASK (0x0002) #define INA3221_DEFAULT_POWER_UPPER_LIMIT (0x2710) //10V #define INA3221_DEFAULT_POWER_LOWER_LIMIT (0x2328) //9V #define INA3221_MASK_CONFIG (0x7C00) /* * Numbrer of samples */ typedef enum { INA3221_AVG_1 = 0, //Default INA3221_AVG_4, INA3221_AVG_16, INA3221_AVG_64, INA3221_AVG_128, INA3221_AVG_256, INA3221_AVG_512, INA3221_AVG_1024, } ina3221_avg_t; /* * Channel selection list */ typedef enum { CHANNEL_1 = 0, CHANNEL_2, CHANNEL_3, } ina3221_channel_t; /* * Conversion time in us */ typedef enum { INA3221_CT_140 = 0, INA3221_CT_204, INA3221_CT_332, INA3221_CT_588, INA3221_CT_1100, //Default INA3221_CT_2116, INA3221_CT_4156, INA3221_CT_8244, } ina3221_ct_t ; /* * Config description register */ typedef union { struct { uint16_t esht : 1; // Enable/Disable shunt measure // LSB uint16_t ebus : 1; // Enable/Disable bus measure uint16_t mode : 1; // Single shot measure or continious mode uint16_t vsht : 3; // Shunt voltage conversion time uint16_t vbus : 3; // Bus voltage conversion time uint16_t avg : 3; // number of sample collected and averaged together uint16_t ch3 : 1; // Enable/Disable channel 3 uint16_t ch2 : 1; // Enable/Disable channel 2 uint16_t ch1 : 1; // Enable/Disable channel 1 uint16_t rst : 1; //Set this bit to 1 to reset device // MSB }; uint16_t config_register; } ina3221_config_t; /* * Mask/enable description register */ typedef union { struct { uint16_t cvrf : 1 ; // Conversion ready flag (1: ready) // LSB uint16_t tcf : 1 ; // Timing control flag uint16_t pvf : 1 ; // Power valid flag uint16_t wf : 3 ; // Warning alert flag (Read mask to clear) (order : Channel1:channel2:channel3) uint16_t sf : 1 ; // Sum alert flag (Read mask to clear) uint16_t cf : 3 ; // Critical alert flag (Read mask to clear) (order : Channel1:channel2:channel3) uint16_t cen : 1 ; // Critical alert latch (1:enable) uint16_t wen : 1 ; // Warning alert latch (1:enable) uint16_t scc3 : 1 ; // channel 3 sum (1:enable) uint16_t scc2 : 1 ; // channel 2 sum (1:enable) uint16_t scc1 : 1 ; // channel 1 sum (1:enable) uint16_t : 1 ; //Reserved //MSB }; uint16_t mask_register; } ina3221_mask_t; /* * Device description */ typedef struct { const uint8_t addr; // ina3221 I2C address const uint16_t shunt[BUS_NUMBER]; //Memory of shunt value (mOhm) ina3221_config_t config; //Memory of ina3221 config ina3221_mask_t mask; //Memory of mask_config } ina3221_t; /** * sync internal config buffer and mask with external device register ( When struct is manually set ) * @param dev Pointer to device descriptor * @return Non-zero if error occured */ int ina3221_sync(ina3221_t *dev); /** * send current config register to trig a measurement in single-shot mode * @param dev Pointer to device descriptor * @return Non-zero if error occured */ int ina3221_trigger(ina3221_t *dev); /** * get mask register from the device ( Used to read flags ) * @param dev Pointer to device descriptor * @return Non-zero if error occured */ int ina3221_getStatus(ina3221_t *dev); /** * Set options for bus and shunt * @param dev Pointer to device descriptor * @param mode Selection of measurement (true :continuous // false:single-shot) * @param bus Enable/Disable bus measures * @param shunt Enable/Disable shunt measures * @return Non-zero if error occured */ int ina3221_setting(ina3221_t *dev ,bool mode, bool bus, bool shunt); /** * Select channel * @param dev Pointer to device descriptor * @param ch1 Enable/Disable channel 1 ( true : enable // false : disable ) * @param ch2 Enable/Disable channel 2 ( true : enable // false : disable ) * @param ch3 Enable/Disable channel 3 ( true : enable // false : disable ) * @return Non-zero if error occured */ int ina3221_enableChannel(ina3221_t *dev ,bool ch1, bool ch2, bool ch3); /** * Select channel to be sum (don't impact enable channel status) * @param dev Pointer to device descriptor * @param ch1 Enable/Disable channel 1 ( true : enable // false : disable ) * @param ch2 Enable/Disable channel 2 ( true : enable // false : disable ) * @param ch3 Enable/Disable channel 3 ( true : enable // false : disable ) * @return Non-zero if error occured */ int ina3221_enableChannelSum(ina3221_t *dev ,bool ch1, bool ch2, bool ch3); /** * enable Latch on warning and critical alert pin * @param dev Pointer to device descriptor * @param warning Enable/Disable warning latch ( true : Latch // false : Transparent ) * @param critical Enable/Disable critical latch ( true : Latch // false : Transparent ) * @return Non-zero if error occured */ int ina3221_enableLatchPin(ina3221_t *dev ,bool warning, bool critical); /** * Set average ( number(s) of point measured ) * @param dev Pointer to device descriptor * @param avg Value of average selection * @return Non-zero if error occured */ int ina3221_setAverage(ina3221_t *dev, ina3221_avg_t avg); /** * Set conversion time ( time for a measurement ) for bus. * @param dev Pointer to device descriptor * @param ct Value of conversion time selection * @return Non-zero if error occured */ int ina3221_setBusConversionTime(ina3221_t *dev,ina3221_ct_t ct); /** * Set conversion time ( time for a measurement ) for shunt. * @param dev Pointer to device descriptor * @param ct Value of conversion time selection * @return Non-zero if error occured */ int ina3221_setShuntConversionTime(ina3221_t *dev,ina3221_ct_t ct); /** * Reset device and config like POR (Power-On-Reset) * @param dev Pointer to device descriptor * @return Non-zero if error occured */ int ina3221_reset(ina3221_t *dev); /** * Get Bus voltage (V) * @param dev Pointer to device descriptor * @param channel Select channel value to get * @param voltage Data pointer to get bus voltage (V) * @return Non-zero if error occured */ int ina3221_getBusVoltage(ina3221_t *dev, ina3221_channel_t channel, float *voltage); /** * Get Shunt voltage (mV) and current (mA) * @param dev Pointer to device descriptor * @param channel Select channel value to get * @param voltage Data pointer to get shunt voltage (mV) * @param current Data pointer to get shunt voltage (mA) * @return Non-zero if error occured */ int ina3221_getShuntValue(ina3221_t *dev, ina3221_channel_t channel, float *voltage, float *current); /** * Get Shunt-voltage (mV) sum value of selected channels * @param dev Pointer to device descriptor * @param channel Select channel value to get * @param voltage Data pointer to get shunt voltage (mV) * @return Non-zero if error occured */ int ina3221_getSumShuntValue(ina3221_t *dev, float *voltage); /** * Set Critical alert (when measurement(s) is greater that value set ) * @param dev Pointer to device descriptor * @param channel Select channel value to set * @param current Value to set (mA) // max : 163800/shunt (mOhm) * @return Non-zero if error occured */ int ina3221_setCriticalAlert(ina3221_t *dev, ina3221_channel_t channel, float current); /** * Set Warning alert (when average measurement(s) is greater that value set ) * @param dev Pointer to device descriptor * @param channel Select channel value to set * @param current Value to set (mA) // max : 163800/shunt (mOhm) * @return Non-zero if error occured */ int ina3221_setWarningAlert(ina3221_t *dev, ina3221_channel_t channel, float current); /** * Set Sum Warning alert (Compared to each completed cycle of all selected channels : Sum register ) * @param dev Pointer to device descriptor * @param voltage voltage to set (mV) // max : 655.32 * @return Non-zero if error occured */ int ina3221_setSumWarningAlert(ina3221_t *dev, float voltage); /** * Set Power-valid upper-limit ( To determine if power conditions are met.)( bus need enable ) * If bus voltage exceed the value set, PV pin is high * @param dev Pointer to device descriptor * @param voltage voltage to set (V) * @return Non-zero if error occured */ int ina3221_setPowerValidUpperLimit(ina3221_t *dev, float voltage); /** * Set Power-valid lower-limit ( To determine if power conditions are met.)( bus need enable ) * If bus voltage drops below the value set, PV pin is low * @param dev Pointer to device descriptor * @param voltage voltage to set (V) * @return Non-zero if error occured */ int ina3221_setPowerValidLowerLimit(ina3221_t *dev, float voltage); #ifdef __cplusplus } #endif #endif /* INA3221_H_ */