串口设置：包括初始化及应用；串口调试方面直接能用上-// This sample uses the UART to communicate with a PC. Therefore it sets up the internal

// Baud Rate Generator (BRG). The LPC900 receives a command ( S ), sent by the PC and

// sends out a response, which can be displayed with the program　Hyperterminal .

// The parameter settings for

// 9600 baud, 8 data bits, 1 stop bit and no flow control.

// To begin the communication click on　wait for call .