1 /**************串口0寄存器初始化****************/
 2 void UART0_INIT(int pclk,int baud)
 3 {
 4     int i;
 5     if(pclk == 0)
 6     pclk    = PCLK;
 7     rUFCON0 = 0x21;   //UART channel 0 FIFO control register, FIFO disable
 8     rUMCON0 = 0x0;   //UART chaneel 0 MODEM control register, AFC disable
 9     rULCON0 = 0x3;
10     rUCON0  = 0x385;   // Control register
11     rUBRDIV0=( (int)(pclk/16./baud+0.5) -1 );
12 }

 1 /************中断处理函数********************/
 2     char buff[30];
 3     char *ps = buff;
 4     int i = 0;
 5  
 6     DisableSubIrq(BIT_SUB_RXD0);                   //关闭串口中断
 7     i = (rUFSTAT0&0x1f);
 8     Uart_Printf("count is %x\n",i);
 9     if(rSUBSRCPND & BIT_SUB_RXD0)  //接收中断
10     {
11         while(((rUFSTAT0&0x1f)>0))
12         {
13             *ps++ = rURXH0; 
14         }         
15     }
16     *ps++ = '\0';
17     i = (rUFSTAT0&0x1f);
18     Uart_Printf("count is %x\n",i);
19     Uart_Printf("buff is %s\n",buff);
20     ClearSubPending(BIT_SUB_RXD0);                 //恢复中断
21     ClearPending(BIT_UART0);
22     EnableIrq(BIT_UART0);
23     EnableSubIrq(BIT_SUB_RXD0);