hi, i am using lpc2378 ...when i configure port 0 and 1 as fast GPIO my uart baud rate becomes half...since i have used port0 and 1 to interface a lot of other peripherals i am not in a position to make it normal GPIO.Can anybody have the solution so that i will get the correct baudrate even if I configure the P0 and P1 as fast I/O
Fast GPIO selection instead of slow GPIO (GPIOM - Bit 0 in SCS Register) should have no effect on the UARTx clock. Check if you really change only the GPIOM bit.