/* Check if the UARTx is busy or not. 
@method UART_IsBusy  */
Boolean UART_IsBusy(UART_TypeDef *UARTx)
/* Check if the UARTx is busy or not. 
@method UART_IsBusy  */
Boolean UART_IsBusy(UART_TypeDef *UARTx)
{
    _ASSERT(IS_UART(UARTx));
    return (Boolean)(!(UARTx->STATUS.bit.RX_EMPTY));
}