File syn_powermon.c¶

FileList > sensor > syn_powermon.c

Generic Power & Current Monitor Driver (INA219, INA226, INA3221).

#include "syn_powermon.h"
#include "../util/syn_assert.h"
#include <string.h>

Public Functions¶

Type	Name
void	syn_powermon_feed_raw (SYN_PowerMon * pm, uint16_t raw_bus_v, float raw_shunt_mv) Feed raw I2C register samples (bus voltage & shunt voltage).
float	syn_powermon_get_bus_voltage (const SYN_PowerMon * pm) Get measured bus voltage in Volts.
float	syn_powermon_get_current_ma (const SYN_PowerMon * pm) Get measured current in Milliamps.
float	syn_powermon_get_power_mw (const SYN_PowerMon * pm) Get calculated power in Milliwatts.
SYN_Status	syn_powermon_init (SYN_PowerMon * pm, SYN_GPIO_Pin scl, SYN_GPIO_Pin sda, uint8_t i2c_addr, float shunt_resistor_ohms, SYN_PowerMonType type) Initialize Power Monitor IC.

Public Functions Documentation¶

function syn_powermon_feed_raw¶

Feed raw I2C register samples (bus voltage & shunt voltage).

void syn_powermon_feed_raw (
    SYN_PowerMon * pm,
    uint16_t raw_bus_v,
    float raw_shunt_mv
)

Parameters:

pm Power monitor context.
raw_bus_v Raw bus voltage register value.
raw_shunt_mv Raw shunt voltage in millivolts.

function syn_powermon_get_bus_voltage¶

Get measured bus voltage in Volts.

float syn_powermon_get_bus_voltage (
    const SYN_PowerMon * pm
)

Parameters:

pm Power monitor context.

Returns:

Voltage in Volts.

function syn_powermon_get_current_ma¶

Get measured current in Milliamps.

float syn_powermon_get_current_ma (
    const SYN_PowerMon * pm
)

Parameters:

pm Power monitor context.

Returns:

Current in mA.

function syn_powermon_get_power_mw¶

Get calculated power in Milliwatts.

float syn_powermon_get_power_mw (
    const SYN_PowerMon * pm
)

Parameters:

pm Power monitor context.

Returns:

Power in mW.

function syn_powermon_init¶

Initialize Power Monitor IC.

SYN_Status syn_powermon_init (
    SYN_PowerMon * pm,
    SYN_GPIO_Pin scl,
    SYN_GPIO_Pin sda,
    uint8_t i2c_addr,
    float shunt_resistor_ohms,
    SYN_PowerMonType type
)

Parameters:

pm Power monitor context.
scl I2C SCL GPIO pin.
sda I2C SDA GPIO pin.
i2c_addr I2C slave address (e.g. 0x40 or 0x41).
shunt_resistor_ohms Shunt resistor value in Ohms (e.g. 0.1f).
type IC type (INA219 or INA226).

Returns:

SYN_OK on success.

The documentation for this class was generated from the following file src/syntropic/sensor/syn_powermon.c