uart.c

这是在凌阳单片机,使用超级终端,显示的一个中文输入法.

#include"SPCE061A.h"

volatile unsigned char RX_BUFFER[16];
volatile unsigned char RX_Index;		
volatile unsigned char RX_Flag;

void UARTInit(void)
{
P_IOB_Attrib|=0x0480;
P_IOB_Dir|=(1<<10); //IOB10输出
P_IOB_Dir&=~(1<<7); //IOB7输入

P_UART_BaudScalarLow=0x00;         //默认为24.567MHz或49.152MHz,波特率9600
P_UART_BaudScalarHigh=0x05;

P_UART_Command1=0x80;
P_UART_Command2=0xC0;

}



void UART_Handler(void)  //中断式接受数据
{
unsigned char temp,IRTemp;
IRTemp=P_UART_Command2;
if(IRTemp&0x80)
{
 temp=P_UART_Data;
 RX_BUFFER[RX_Index]=temp;		//保存数据到数组里面
 RX_Index++;
 if (RX_Index>=16) RX_Index=0;		//防止数组溢出
 RX_Flag=1;         
}
}

void putc(unsigned char c) //发送采用查询方式
{
P_UART_Data=c;
while((P_UART_Command2&0x40)==0);
}

void prints(unsigned char *ptr,unsigned char newline)//发送字符串，newline--是否换行，1－换，0－不换
{
	while (*ptr)
	{
		putc(*ptr++);
	}
	if(newline)
	{
	putc(0x0D);
	putc(0x0A);  //结尾发送回车换行
    }
}


void printc(unsigned char temp) //直接把8位数字结果发到中断。
{
unsigned char i,j;
i=temp;
 for(j=0;j<2;j++)
  {
   if(!j) {i>>=4;i=i&0x0F;}
   else i=temp&0x0F;
   switch(i)
    {
     case 0:
     case 1:
     case 2:
	 case 3:
     case 4:
     case 5:
     case 6:
     case 7:
     case 8:
     case 9:  putc(i+'0');break;
     case 10: putc('A');break;
     case 11: putc('B');break;
     case 12: putc('C');break;
     case 13: putc('D');break;
     case 14: putc('E');break; 
     case 15: putc('F');break;
     default: break;
    }
  }
}


void ClrScr(void)//超级终端清屏
{
putc(0x0C);
putc(0x0C);
}