单片机一页开卷1.0

mvoid X0_ISR(void) interrupt 0{} //外部中断0void T0_ISR (void) interrupt 1{} //定时器T0void X1_ISR(void) interrupt 2{} //外部中断1void T1_ISR (void) interrupt 3{} //定时器T1void UART1_ISR (void) interrupt 4{}//串行口1void ADC_ISR (void) interrupt 5{} //ADC void LVD_ISR (void) interrupt 6{} //低电压检测void PCA_ISR (void) interrupt 7{} //PCA void UART2_ISR (void) interrupt 8{}//串行口2void SPI_ISR (void) interrupt 9{} //SPI通信#include “stc12.h”void X0_ISR (void) interrupt 0{P2=~P1;}void main (void){P2=0x0f;IT0=1; EX0=1;EA =1;while(1);}软件延时#include “stc12.h”sbit P20=P2^0;unsigned char i; 。

void main (void) {TMOD=0x01;TL0=0x58; TH0=0x9E;i=20;ET0=1; EA = 1; TR0=1;while(1); //等待中断}void T0_ISR (void) interrupt 1{TL0=0x58;TH0=0x9E;i--;if(i==0) {P20 = !P20; i = 20;}}占空比为X/M的方波#include “stc12.h”sbit P20=P2^0;unsigned char i; 。

void main (void) {TMOD=0x01;TL0=0x58;TH0=0x9E;i=M;ET0=1; EA = 1; TR0=1;while(1); //等待中断}void T0_ISR (void) interrupt 1{TL0=0x58;TH0=0x9E;i--;if(i>=X) P20 =1;If( i = =0) i=M;}}指示灯循环#include “stc12.h”sbit P20=P2^0;unsigned char i=0;unsigned char a[4]={0x18,0x24,0x42,0x81};void main (void) {TMOD=0x01;TL0=0x58;TH0=0x9E;ET0=1; EA = 1; TR0=1;while(1); //等待中断}void T0_ISR (void) interrupt 1{TL0=0x58;TH0=0x9E;i++;P20=a[i%4]；if(i==20) i=0;}}作时钟脉冲#include "stc12.h"void main(void){TMOD = 0x22;AUXR = AUXR | 0x80; //T0工作在1T模式AUXR = AUXR| 0x40; //T1工作在1T模式AUXR = AUXR | 0x04; //独立1T模式BRT = (256-74);TH0 = (256-74);TH1 = (256-240);WAKE_CLKO=WAKE_CLKO|0x07;TR0 = 1；TR1 = 1；AUXR =AUXR|0x10;while(1);}串行通信甲机发送，乙机接收#include “stc12.h”unsigned char xdata ADDRT[128];unsigned char num=0;unsigned char *psend;void main (void){SCON=0x40; TMOD=0x20; TH1=0xfd;TL1=0xfd;TR1=1;ES=1;EA=1;psend=ADDRT;SBUF=*psend;while(1);}void UART_ISR(void) interrupt 4{TI = 0; num++;if(num==0x7F) ES=0;else{ psend++;SBUF=*psend;}}乙机#include “stc12.h”unsigned char xdata ADDRR[128];unsigned char num=0;unsigned char *Receive;void main (void){SCON=0x40; TMOD=0x20; TH1=0xfd;TL1=0xfd; TR1=1;ES=1;EA=1;Receive=ADDRR;while(1);}void UART_ISR(void) interrupt 4{;*Receive=SBUF;Receive++;num++;if(num==128) ES=0;}带偶校验的程序甲机：#include “stc12.h”unsigned char xdata ADDRT[128];unsigned char num=0,retval;unsigned char *mypdata;void main (void){PCON=0x80;SCON=0x90; ES=1;EA=1;mypdata=ADDRT; ACC=*mypdata;TB8=P; SBUF=ACC;while(1);}void Serial_ISR(void) interrupt 4{if(RI){RI=0; retval = SBUF;if(retval!=0){ACC=*mypdata; TB8 = P;SBUF = ACC; }else {mypdata++; ACC=*mypdata; TB8=P;SBUF=ACC;if(num++ == 0x7F)ES=0;故障信号输入端}}elseTI = 0;}乙机：#include “stc12.h”unsigned char xdata ADDRR[128]; unsigned char num=0;unsigned char *mypdata;void main (void){PCON=0x80; SCON=0x90; mypdata=ADDRR;ES=1; EA=1;while(1);}void Serial_ISR(void) interrupt 4{if(RI){RI=0; ACC = SBUF;if(P==RB8){*mypdata = ACC;SBUF=0x00;mypdata++;if (num++ == 0x80) ES = 0;}elseSBUF = 0xff;}elseTI = 0;}多机通讯#include “stc12.h”unsigned char xdata ADDRT[10]; unsigned char SLA VE;unsigned char num=0, *mypdata;void main (void){SCON=0xC0;TMOD=0x20;TH1=0xfa; TL1=0xfa;mypdata=ADDRT;SLA VE=5;TR1=1; ES=1; EA=1; TB8=1;SBUF=SLAVE;while(1); }void Serial_ISR(void) interrupt 4 {TI=0;TB8=0;SBUF=*mypdata; //发送数据mypdata++; //修改指针num++;if(num==0x0a) ES=0;}#include “stc12.h”unsigned char xdata ADDRR[10];unsigned charSLA VE,num=0x0a,rdata,*mypdata;void main (void){SCON=0xf0;TMOD=0x20;TH1=0xfa;TL1=0xfa;mypdata=ADDRR;SLA VE=5;TR1=1; ES=1; EA=1;while(1); //等待中断}void Serial_ISR(void) interrupt 4{RI=0;rdata=SBUF;if(RB8){if(rdata==SLA VE)SM2=0;}else{*mypdata=rdata;mypdata++; num--;if(num==0x00)SM2=1;}独立波特率发生器串口2 取反#include “stc12.h”char bdata bittest;sbit TIbit＝bittest^1; //第1位sbit RIbit＝bittest^0; //第0位void main(void){S2CON=0x50;BRT=0xFD;AUXR=0x11;IE2=0x01;EA=1;while(1);}void UART2_ISR(void) interrupt 8{unsigned char tmpdata;bittest=S2CON;if (RIbit){RIbit = 0;tmpdata=S2BUF;S2BUF=~tmpdata;}elseTIbit=0;S2CON=bittest; //清零中断标志}外接芯片进行AD转换#include "stc12.h"sbit busy=P3^2;sbit A0=P1^5;sbit A1=P1^6;sbit A2=P1^7;void main(void){int ADdata;char highdata,lowdata;char xdata *ADS7852;ADS7852=0x7fff;TMOD=0X02;TH0=254;//12/12/2/2=0.25MHZWAKE_CLKO=WAKE_CLKO|0X1;TR0=1; A0=0; A1=0; A2=0;*ADS7852=0x00;while(1){if(busy==1){lowdata=*ADS7852;ADdata=P1;ADdata= (ADdata<<8) +lowdata;(A0=0; A1=0; A2=0;)*ADS7852=0x00;}}}单通道转换#include “stc12.h”unsigned char data adc_hi _at_ 0x31;unsigned char data adc_low _at_ 0x30;void main(void){unsigned long i;ADC_CONTR|=0x80;for (i=0;i<10000;i++); //适当延时P1ASF=0x04;ADC_CONTR=0xE2;for (i=0;i<10000;i++); //适当延时AUXR1 |=0x04;//ADRJ=1ADC_CONTR|=0x08;EADC=1; EA=1;while(1);}void ADC_ISR (void) interrupt 5{ADC_CONTR&=0xE7;adc_hi=ADC_RES&0x03;adc_low=ADC_RESL;ADC_CONTR|=0x08;}。