1.3.2.4.8 I2C_BB_TransferSetup Function

bool I2C_BB_TransferSetup(I2CBB_TRANSFER_SETUP* setup, uint32_t tmrSrcClkFreq )

Dynamic setup of I2C Bit Bang Library.

This API is generally used when there are multiple clients on the same I2C bus having different I2C clock speed. In such a case, the I2C_BB_TransferSetup API must be called to set the appropriate I2C bus speed before starting the I2C transfer for the I2C slave.

I2C_BB_Initialize must have been called for the associated I2C instance. The transfer status should not be busy.

true - Transfer setup was updated Successfully.

false - Failure while updating transfer setup.

I2C_TRANSFER_SETUP setup;

setup.clkSpeed = 400000;

// Make sure that the I2C is not busy before changing the I2C clock frequency
if (I2C_BB_IsBusy() == false)
{
    if (I2C_BB_TransferSetup( &setup, 0 ) == true)
    {
        // Transfer Setup updated successfully
    }
}

The timer period will be changed based on the new I2C clock speed, when an I2C request is submitted