uart.zip_uart通讯_串口和时钟联合_获取PC串口_Ｃ５１

#include<stc15f.h> #include<intrins.h> #include<absacc.h> #define uchar unsigned char #define uint unsigned int #define FOSC 12000000L #define BAUD 9600 #define READ 0 #define WRITE 1 #define S1_S0 0x40 //P_SW1.6 #define S1_S1 0x80 //P_SW1.7 #define buz P43 #define NONE_PARITY 0 //无校验 #define ODD_PARITY 1 //奇校验 #define EVEN_PARITY 2 //偶校验 #define MARK_PARITY 3 //标记校验 #define SPACE_PARITY 4 //空白校验 #define PARITYBIT EVEN_PARITY //定义校验位 uchar year,month,date,hour,fen; unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}; uchar num=0; uchar buzy=0; sbit N1=P3^3; sbit N2=P4^0; sbit N3=P5^5; sbit N4=P5^4; /**********发送函数*******************/ void send(uchar dat) { SBUF=dat; while(!TI); TI=0; } /**********发送字符串*****************/ void SendString(char*s) { while(*s) { send(*s++); } } /*********中断初始化函数**************/ void uartinit() { #if (PARITYBIT == NONE_PARITY) SCON=0x50; //工作模式一：8位可变波特率 #elif (PARITYBIT == ODD_PARITY)||(PARITYBIT==EVEN_PARITY)||(PARITYBIT==MARK_PARITY) SCON=0xda; //9位可变波特率,校验位初始为1 #elif (PARITYBIT == SPACE_PARITY) SCON=0xd2; //9位可变波特率,校验位初始为0 #endif T2L=(65536-(FOSC/4/BAUD)); T2H=(65536-(FOSC/4/BAUD))>>8; AUXR=0x14; //T2为1T模式，并启动定时器2 AUXR|=0x01; //选择定时器2为串口1的波特率发生器 ES=1; //使能串口1中断 EA=1; } /*********** 1ms延时函数 *************/ void Delay(void) //@12.000MHz { uchar i, j; i = 12; j = 169; do { while (--j); } while (--i); } /****************时钟读取函数***************/ void rtc_read(void) { year =XBYTE[0xfe09]; month=XBYTE[0xfe08]; date =XBYTE[0xfe07]; hour =XBYTE[0xfe04]; fen =XBYTE[0xfe02]; } /***********显示函数****************/ void display(uchar a) { uchar shi,ge; shi=a/16; ge=a%16; XBYTE[0xfdff]=table[shi]; P33=0; Delay(); P33=1; XBYTE[0xfdff]=0xff; //第一段 XBYTE[0xfdff]=table[ge]; P40=0; Delay(); P40=1; XBYTE[0xfdff]=0xff; //第二段 } /*************主函数*************/ void main() { uartinit(); while(1) { if(buzy==1) { send(num++); buzy=0; } display(num); } } void intter() interrupt 4 { if(RI) //检测是否接收完成 { num = SBUF; //num 取出接收缓存器的值 RI = 0; buzy=1; } }