/* Enables internal loopback mode for an I2C port. */
void I2CLoopbackEnable(uint32_t ui32Base)
/* Enables internal loopback mode for an I2C port. */
void I2CLoopbackEnable(uint32_t ui32Base)
{
    ASSERT(_I2CBaseValid(ui32Base));
    HWREG(ui32Base + I2C_O_MCR) |= I2C_MCR_LPBK;
}