> At the higther baude rate ( > 38400 bauds ), my application 
> don't work properly.
 
What kind of UART model does the BSP have?  On the devices I have used in the past, the UART is modelled on a National Semiconductor 16550 style device.  They start with only a 4 byte buffer (16450 device compatibility mode), but you can enable a 16 byte FIFO by setting a bit in a configuration register.
To run at 115k baud, you will likely have to have the larger FIFO enabled, and use flow control, either with hardware flow control lines, or by using flow control symbols in the byte stream (software flow control).
I don't recall that you mentioned whether you were using software, hardware, or no flow control.  My experience is that with no flow control, most UARTs will have difficulty above 38k or 56k baud.

I have not looked at the driver for the UART on your BSP.  Does it have an error reporting mechanism to report buffer overflow?  If the status bit for buffer overflow is being set, that would definitely point to flow control problems.

-- Chris Caudle


