USART instance Deinit/Init, following
conditions for macro call should be
fulfilled : UART instance should have
already been initialised (through call
of HAL_UART_Init() )macro could
only be called when corresponding
UART instance is disabled (i.e
__HAL_UART_DISABLE(__HANDL
E__)) and should be followed by an
Enable macro (i.e
__HAL_UART_ENABLE(__HANDLE
__)).