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我想改变波特率的配置，想修改 UARTIBRD的值，应该怎么写例如要给他赋值0x15; 请示范一下
在mdk中在uart.c中找到有关的源代码，照着修改即可
ui32Div = (((ui32UARTClk * 8) / ui32Baud) + 1) / 2;
HWREG(ui32Base + UART_O_IBRD) = ui32Div / 64; HWREG(ui32Base + UART_O_FBRD) = ui32Div % 64;
ui32Base 对应UART模块，ui32Baud对应波特率，ui32UARTClk 对应UART时钟。
其实很麻烦，直接调用库函数UARTConfigSetExpClk即可
