ina3221_internal.h

Go to the documentation of this file.

/*
 * Copyright (C) 2019 Otto-von-Guericke-Universität Magdeburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#include <assert.h>
#include "ina3221_defines.h"
#include "ina3221.h"
 
#ifdef __cplusplus
extern "C" {
#endif

static inline int32_t reg_val_to_shunt_voltage_uv(int16_t reg_val)
{
    assert(reg_val <= INA3221_MAX_SHUNT_REG_VAL);
 
    return reg_val / 8 * INA3221_SHUNT_VOLTAGE_PRECISION_UV;
}

static inline int16_t shunt_voltage_uv_to_reg_val(int32_t s_uv)
{
    assert(s_uv <= INA3221_MAX_SHUNT_UV);
 
    return s_uv / INA3221_SHUNT_VOLTAGE_PRECISION_UV * 8;
}

static inline int16_t reg_val_to_bus_voltage_mv(int16_t reg_val)
{
    assert(reg_val <= INA3221_MAX_BUS_REG_VAL);
 
    return reg_val / 8 * INA3221_BUS_VOLTAGE_PRECISION_MV;
}

static inline int16_t bus_voltage_mv_to_reg_val(int16_t b_mv)
{
    assert(b_mv >= INA3221_MIN_BUS_MV);
    assert(b_mv <= INA3221_MAX_BUS_MV);
 
    return b_mv / INA3221_BUS_VOLTAGE_PRECISION_MV * 8;
}

static inline int32_t sum_reg_val_to_shunt_voltage_uv(int16_t sum_reg_val)
{
    assert(sum_reg_val <= INA3221_MAX_SHUNT_SUM_REG_VAL);
 
    return sum_reg_val / 2 * INA3221_SHUNT_VOLTAGE_PRECISION_UV;
}

static inline int16_t sum_shunt_voltage_uv_to_reg_val(int32_t sum_suv)
{
    assert(sum_suv <= INA3221_MAX_SHUNT_SUM_UV);
 
    return sum_suv / INA3221_SHUNT_VOLTAGE_PRECISION_UV * 2;
}
 
#ifdef __cplusplus
}
#endif