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Ina3221 (#318)

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INA3221 driver + example
This commit is contained in:
Zaltora 2016-12-29 15:45:25 +01:00 committed by Ruslan V. Uss
parent 14c8ff57ca
commit 5eae1664e5
5 changed files with 674 additions and 0 deletions
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3
examples/ina3221_test/Makefile Normal file
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PROGRAM=ina3221_test
EXTRA_COMPONENTS = extras/i2c extras/ina3221
include ../../common.mk

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examples/ina3221_test/main.c Normal file
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/*
* Example of using INA3221
*
* Part of esp-open-rtos
* Copyright (C) 2016 Zaltora
* MIT Licensed as described in the file LICENSE
*/
#include "espressif/esp_common.h"
#include "FreeRTOS.h"
#include "task.h"
#include <esp/uart.h>
#include <stdbool.h>
#include "ina3221/ina3221.h"
#define PIN_SCL 5
#define PIN_SDA 2
#define ADDR INA3221_ADDR_0
#define WARNING_CHANNEL 1
#define WARNING_CURRENT (40.0)
//#define STRUCT_SETTING 0
#define MODE false // true : continuous measurements // false : trigger measurements
void ina_measure(void *pvParameters)
{
uint32_t measure_number = 0;
float bus_voltage;
float shunt_voltage;
float shunt_current;
bool warning = false ;
// Create ina3221 device
ina3221_t dev = {
.addr = ADDR,
.shunt = { 100 ,100 ,100 }, // shunt values are 100 mOhm for each channel
.mask.mask_register = INA3221_DEFAULT_MASK, // Init
.config.config_register = INA3221_DEFAULT_CONFIG, // Init
};
#ifndef STRUCT_SETTING
if(ina3221_setting(&dev ,MODE, true, true)) // mode selection , bus and shunt activated
goto error_loop;
if(ina3221_enableChannel(&dev , true, true, true)) // Enable all channels
goto error_loop;
if(ina3221_setAverage(&dev, INA3221_AVG_64)) // 64 samples average
goto error_loop;
if(ina3221_setBusConversionTime(&dev, INA3221_CT_2116)) // 2ms by channel
goto error_loop;
if(ina3221_setShuntConversionTime(&dev, INA3221_CT_2116)) // 2ms by channel
goto error_loop;
#else
dev.config.mode = MODE; // mode selection
dev.config.esht = true; // shunt enable
dev.config.ebus = true; // bus enable
dev.config.ch1 = true; // channel 1 enable
dev.config.ch2 = true; // channel 2 enable
dev.config.ch3 = true; // channel 3 enable
dev.config.avg = INA3221_AVG_64; // 64 samples average
dev.config.vbus = INA3221_CT_2116; // 2ms by channel (bus)
dev.config.vsht = INA3221_CT_2116; // 2ms by channel (shunt)
if(ina3221_sync(&dev))
goto error_loop;
#endif
ina3221_setWarningAlert(&dev, WARNING_CHANNEL-1, WARNING_CURRENT); //Set security flag overcurrent
while(1)
{
measure_number++;
#if !MODE
if (ina3221_trigger(&dev)) // Start a measure
goto error_loop;
printf("trig done, wait: ");
do
{
printf("X");
if (ina3221_getStatus(&dev)) // get mask
goto error_loop;
vTaskDelay(20/portTICK_PERIOD_MS);
if(dev.mask.wf&(1<<(3-WARNING_CHANNEL)))
warning = true ;
} while(!(dev.mask.cvrf)); // check if measure done
#else
if (ina3221_getStatus(&dev)) // get mask
goto error_loop;
if(dev.mask.wf&(1<<(3-WARNING_CHANNEL)))
warning = true ;
#endif
for (uint8_t i = 0 ; i < BUS_NUMBER ; i++)
{
if(ina3221_getBusVoltage(&dev, i, &bus_voltage)) // Get voltage in V
goto error_loop;
if(ina3221_getShuntValue(&dev, i, &shunt_voltage, &shunt_current)) // Get voltage in mV and currant in mA
goto error_loop;
printf("\nC%u:Measure number %u\n",i+1,measure_number);
if (warning && (i+1) == WARNING_CHANNEL) printf("C%u:Warning Current > %.2f mA !!\n",i+1,WARNING_CURRENT);
printf("C%u:Bus voltage: %.02f V\n",i+1,bus_voltage );
printf("C%u:Shunt voltage: %.02f mV\n",i+1,shunt_voltage );
printf("C%u:Shunt current: %.02f mA\n\n",i+1,shunt_current );
}
warning = false ;
vTaskDelay(5000/portTICK_PERIOD_MS);
}
error_loop:
printf("%s: error while com with INA3221\n", __func__);
for(;;)
{
vTaskDelay(2000/portTICK_PERIOD_MS);
printf("%s: error loop\n", __FUNCTION__);
}
}
void user_init(void)
{
uart_set_baud(0, 115200);
printf("SDK version:%s\n", sdk_system_get_sdk_version());
i2c_init(PIN_SCL,PIN_SDA);
xTaskCreate(ina_measure, "Measurements_task", 512, NULL, 2, NULL);
}

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extras/ina3221/component.mk Normal file
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# Component makefile for extras/ina3221
# expected anyone using this driver includes it as 'ina3221/ina3221.h'
INC_DIRS += $(ina3221_ROOT)..
# args for passing into compile rule generation
ina3221_SRC_DIR = $(ina3221_ROOT)
$(eval $(call component_compile_rules,ina3221))

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extras/ina3221/ina3221.c Normal file
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/**
* INA3221 driver for esp-open-rtos.
*
* Copyright (c) 2016 Zaltora (https://github.com/Zaltora)
*
* MIT Licensed as described in the file LICENSE
*
* @todo Interupt system for critical and warning alert pin
*/
#include "ina3221.h"
#ifdef INA3221_DEBUG
#define debug(fmt, ...) printf("%s: " fmt "\n", "INA3221", ## __VA_ARGS__)
#else
#define debug(fmt, ...)
#endif
static int _wireWriteRegister (uint8_t addr, uint8_t reg, uint16_t value)
{
i2c_start();
if (!i2c_write(addr<<1)) // adress + W
goto error;
if (!i2c_write(reg))
goto error;
if (!i2c_write((value >> 8) & 0xFF))
goto error;
if (!i2c_write(value & 0xFF))
goto error;
i2c_stop();
debug("Data write to %02X : %02X+%04X\n",addr,reg,value);
return 0 ;
error:
debug("Error while xmitting I2C slave\n");
i2c_stop();
return -EIO;
}
static int _wireReadRegister(uint8_t addr, uint8_t reg, uint16_t *value)
{
uint8_t tampon[2] = { 0 } ;
i2c_start();
if (!i2c_write(addr<<1)) // adress + W
goto error;
if (!i2c_write(reg))
goto error;
i2c_stop();
i2c_start(); // restart condition
if (!i2c_write((addr<<1) | 1)) // adress + R
goto error;
tampon[1] = i2c_read(0);
tampon[0] = i2c_read(1);
i2c_stop();
*value = tampon[1]<<8 | tampon[0] ;
debug("Data read from %02X: %02X+%04X\n",addr,reg,*value);
return 0;
error:
debug("Error while xmitting I2C slave\n");
i2c_stop();
return -EIO;
}
int ina3221_trigger(ina3221_t *dev)
{
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_getStatus(ina3221_t *dev)
{
return _wireReadRegister(dev->addr, INA3221_REG_MASK, &dev->mask.mask_register);
}
int ina3221_sync(ina3221_t *dev)
{
uint16_t ptr_data;
int err = 0;
//////////////////////// Sync config register
if ((err = _wireReadRegister(dev->addr, INA3221_REG_CONFIG, &ptr_data))) // Read config
return err;
if( ptr_data != dev->config.config_register) {
if ((err = _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register))) // Update config
return err;
}
//////////////////////// Sync mask register config
if ((err = _wireReadRegister(dev->addr, INA3221_REG_MASK, &ptr_data))) // Read mask
return err;
if( (ptr_data & INA3221_MASK_CONFIG) != (dev->mask.mask_register & INA3221_MASK_CONFIG)) {
if ((err = _wireWriteRegister(dev->addr, INA3221_REG_MASK, dev->mask.mask_register & INA3221_MASK_CONFIG))) // Update config
return err;
}
return 0;
}
int ina3221_setting(ina3221_t *dev ,bool mode, bool bus, bool shunt)
{
dev->config.mode = mode;
dev->config.ebus = bus;
dev->config.esht = shunt;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_enableChannel(ina3221_t *dev ,bool ch1, bool ch2, bool ch3)
{
dev->config.ch1 = ch1;
dev->config.ch2 = ch2;
dev->config.ch3 = ch3;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_enableChannelSum(ina3221_t *dev ,bool ch1, bool ch2, bool ch3)
{
dev->mask.scc1 = ch1;
dev->mask.scc2 = ch2;
dev->mask.scc3 = ch3;
return _wireWriteRegister(dev->addr, INA3221_REG_MASK, dev->mask.mask_register & INA3221_MASK_CONFIG);
}
int ina3221_enableLatchPin(ina3221_t *dev ,bool warning, bool critical)
{
dev->mask.wen = warning;
dev->mask.cen = critical;
return _wireWriteRegister(dev->addr, INA3221_REG_MASK, dev->mask.mask_register & INA3221_MASK_CONFIG);
}
int ina3221_setAverage(ina3221_t *dev, ina3221_avg_t avg)
{
dev->config.avg = avg;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_setBusConversionTime(ina3221_t *dev,ina3221_ct_t ct)
{
dev->config.vbus = ct;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_setShuntConversionTime(ina3221_t *dev,ina3221_ct_t ct)
{
dev->config.vsht = ct;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register);
}
int ina3221_reset(ina3221_t *dev)
{
dev->config.config_register = INA3221_DEFAULT_CONFIG ; //dev reset
dev->mask.mask_register = INA3221_DEFAULT_CONFIG ; //dev reset
dev->config.rst = 1 ;
return _wireWriteRegister(dev->addr, INA3221_REG_CONFIG, dev->config.config_register); // send reset to device
}
int ina3221_getBusVoltage(ina3221_t *dev, ina3221_channel_t channel, float *voltage)
{
int16_t raw_value;
int err = 0;
if ((err = _wireReadRegister(dev->addr,INA3221_REG_BUSVOLTAGE_1+channel*2, (uint16_t*)&raw_value)))
return err;
*voltage = raw_value*0.001 ; //V 8mV step
return 0;
}
int ina3221_getShuntValue(ina3221_t *dev, ina3221_channel_t channel, float *voltage, float *current)
{
int16_t raw_value;
int err = 0;
if ((err = _wireReadRegister(dev->addr,INA3221_REG_SHUNTVOLTAGE_1+channel*2, (uint16_t*)&raw_value)))
return err;
*voltage = raw_value*0.005; //mV 40uV step
if(!dev->shunt[channel])
{
debug("No shunt configured for channel %u. Dev:%X\n",channel+1, dev->addr);
return -EINVAL;
}
*current = (*voltage*1000.0)/dev->shunt[channel] ; //mA
return 0;
}
int ina3221_getSumShuntValue(ina3221_t *dev, float *voltage)
{
int16_t raw_value;
int err = 0;
if ((err = _wireReadRegister(dev->addr,INA3221_REG_SHUNT_VOLTAGE_SUM, (uint16_t*)&raw_value)))
return err;
*voltage = raw_value*0.02; //uV 40uV step
return 0;
}
int ina3221_setCriticalAlert(ina3221_t *dev, ina3221_channel_t channel, float current)
{
int16_t raw_value = current*dev->shunt[channel]*0.2; // format
return _wireWriteRegister(dev->addr,INA3221_REG_CRITICAL_ALERT_1+channel*2, *(uint16_t*)&raw_value);
}
int ina3221_setWarningAlert(ina3221_t *dev, ina3221_channel_t channel, float current)
{
int16_t raw_value = current*dev->shunt[channel]*0.2 ; // format
return _wireWriteRegister(dev->addr,INA3221_REG_WARNING_ALERT_1+channel*2, *(uint16_t*)&raw_value);
}
int ina3221_setSumWarningAlert(ina3221_t *dev, float voltage)
{
int16_t raw_value = voltage*50.0 ; // format
return _wireWriteRegister(dev->addr,INA3221_REG_SHUNT_VOLTAGE_SUM_LIMIT, *(uint16_t*)&raw_value);
}
int ina3221_setPowerValidUpperLimit(ina3221_t *dev, float voltage)
{
if(!dev->config.ebus)
{
debug("Bus not enable. Dev:%X\n", dev->addr);
return -ENOTSUP;
}
int16_t raw_value = voltage*1000.0; //format
return _wireWriteRegister(dev->addr,INA3221_REG_VALID_POWER_UPPER_LIMIT, *(uint16_t*)&raw_value);
}
int ina3221_setPowerValidLowerLimit(ina3221_t *dev, float voltage)
{
if(!dev->config.ebus)
{
debug("Bus not enable. Dev:%X\n", dev->addr);
return -ENOTSUP;
}
int16_t raw_value = voltage*1000.0; // round and format
return _wireWriteRegister(dev->addr,INA3221_REG_VALID_POWER_LOWER_LIMIT, *(uint16_t*)&raw_value);
}

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extras/ina3221/ina3221.h Normal file
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/**
* 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 <errno.h>
#include <stdio.h>
#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_ */