Utility library for HSP SPo2 HR demo including user interface, board support adn accelerometer.

demoAccelerometer/bmi160_i2c.cpp

Committer:
gmehmet
Date:
14 months ago
Revision:
0:a12d6976d64c

File content as of revision 0:a12d6976d64c:

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#include "bmi160.h"


//*****************************************************************************
BMI160_I2C::BMI160_I2C(I2C *i2cBus, uint8_t i2cAdrs)
:m_i2cBus(i2cBus), m_Wadrs(i2cAdrs << 1), m_Radrs((i2cAdrs << 1) | 1)
{

}

BMI160_I2C::BMI160_I2C(I2C *i2cBus, uint8_t i2cAdrs, InterruptIn *int_pin)
:m_i2cBus(i2cBus), m_Wadrs(i2cAdrs << 1), m_Radrs((i2cAdrs << 1) | 1), BMI160(int_pin)
{

}

//*****************************************************************************
int32_t BMI160_I2C::readRegister(Registers reg, uint8_t *data)
{
    int32_t rtnVal = -1;
    char packet[] = {static_cast<char>(reg)};

    if(m_i2cBus->write(m_Wadrs, packet, 1) == 0)
    {
        rtnVal = m_i2cBus->read(m_Radrs, reinterpret_cast<char *>(data), 1);
    }

    return rtnVal;
}


//*****************************************************************************
int32_t BMI160_I2C::writeRegister(Registers reg, const uint8_t data)
{
    char packet[] = {static_cast<char>(reg), static_cast<char>(data)};

    return m_i2cBus->write(m_Wadrs, packet, sizeof(packet));
}


//*****************************************************************************
int32_t BMI160_I2C::readBlock(Registers startReg, Registers stopReg,
uint8_t *data)
{
    int32_t rtnVal = -1;
    int32_t numBytes = ((stopReg - startReg) + 1);
    char packet[] = {static_cast<char>(startReg)};

    if(m_i2cBus->write(m_Wadrs, packet, 1) == 0)
    {
        rtnVal = m_i2cBus->read(m_Radrs, reinterpret_cast<char *>(data), numBytes);
    }

    return rtnVal;
}


//*****************************************************************************
int32_t BMI160_I2C::writeBlock(Registers startReg, Registers stopReg,
const uint8_t *data)
{
    int32_t numBytes = ((stopReg - startReg) + 1);
    char packet[numBytes + 1];

    packet[0] = static_cast<char>(startReg);

    memcpy(packet + 1, data, numBytes);

    return m_i2cBus->write(m_Wadrs, packet, sizeof(packet));
}