NIOS : uart configuration (baudrate, etc)

hello

the documentation of ALTERA UART mention using HAL, imply to don't change manually registers value.

BUT if you want to change :

- baudrate

- number of bit

- stop, etc...

how we can manage that without any risk ?

Must i use driver function to initialize & open the HAL (fopen) juste after ?

Thanks a lot

Best regards

dvb_man