单片机程序设计例子.txt

io #include / /*- -*/ void main (void) p1 = 0xff; /p1ledff 1111 1111 p1 = 0xfe; /p1 /0xfe160x16fe 1111 1110 while (1) / / - - io #include / /*- -*/ void main (void) p1 = 0xff; /p1ledff 1111 1111 while (1) / p1=p3; /p3p1p3.0=0 1p1.0=01p1.0 / - - #include / /*- -*/ void delay(unsigned int cnt) while(-cnt); /*- -*/ main() p1=0xfe; / 1111 1110 while(1) delay(30000);/ p1 / sbit key1=p30; /尴 sbit key2=p31; sbit key3=p32; sbit key4=p33; /*- -*/ void delay(unsigned int cnt) while(-cnt); /*- -*/ main() p2=0x00; while(1) if(!key1) /İ p0=0x06;/“1“ if(!key2) p0=0x5b;/2 if(!key3) p0=0x4f;/3 if(!key4) p0=0x66;/4 - - #include / sbit key1=p30; /尴 sbit key2=p31; sbit key3=p32; sbit key4=p33; /*- -*/ void delay(unsigned int cnt) while(-cnt); /*- -*/ main() p2=0x00; while(1) if(!key1) /İ delay(1000); if(!key1) p0=0x06;/“1“ if(!key2) /İ delay(1000);/ if(!key2) / p0=0x5b;/“2“ / 豸 if(!key3) /İ delay(1000); if(!key3) p0=0x4f;/“3“ if(!key4) /İ delay(1000); if(!key4) p0=0x66;/“4“ - - #include / sbit led=p12; /led /*- -*/ void init_timer0(void) tmod |= 0x01; /116“|“ th0=0x00; /0 65535 tl0=0x00; ea=1; / et0=1; / tr0=1; / /*- -*/ main() init_timer0(); while(1); /*- -*/ void timer0_isr(void) interrupt 1 using 1 th0=0x00; / tl0=0x00; led=led; / - - 0 #include / /*- -*/ main() p1=0x55; /p1 ea=1; / ex0=1; /0 it0=0; / while(1) / /*- -*/ void isr_key(void) interrupt 0 using 1 p1=p1; - - 0 #include / /*- -*/ main() p1=0x55; /p1 ea=1; / ex0=1; /0 it0=1; / while(1) / /*- -*/ void isr_key(void) interrupt 0 using 1 p1=p1; /s3p1 - - 1 #include / /*- -*/ main() p1=0x55; /p1 ea=1; / ex1=1; /0 it1=1; /it1=0 while(1) / /*- -*/ void isr_key(void) interrupt 2 using 1 / p1=p1; - - #include / #define uchar unsigned char #define uint unsigned int unsigned char const dofly= 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f, 0x77,0x7c,0x39,0x5e,0x79,0x71;/0-f /*- -*/ uchar keyscan(void);/ void delay(uint i); / /*- -*/ void main() uchar key; p2=0x00; /1 İ while(1) key=keyscan(); /裬 switch(key) case 0x7e:p0=dofly0;break;/0 case 0x7d:p0=dofly1;break;/1 case 0x7b:p0=dofly2;break;/2 case 0x77:p0=dofly3;break;/3 case 0xbe:p0=dofly4;break;/4 case 0xbd:p0=dofly5;break;/5 case 0xbb:p0=dofly6;break;/6 case 0xb7:p0=dofly7;break;/7 case 0xde:p0=dofly8;break;/8 case 0xdd:p0=dofly9;break;/9 case 0xdb:p0=dofly10;break;/a case 0xd7:p0=dofly11;break;/b case 0xee:p0=dofly12;break;/c case 0xed:p0=dofly13;break;/d case 0xeb:p0=dofly14;break;/e case 0xe7:p0=dofly15;break;/f /*- -*/ uchar keyscan(void) /躯跨 uchar cord_h,cord_l;/ p3=0x0f; /0 cord_h=p3 / if(cord_h!=0x0f) / delay(100); / if(cord_h!=0x0f) cord_h=p3 / p3=cord_h|0xf0; / cord_l=p3 / return(cord_h+cord_l);/ return(0xff); / /*- -*/ void delay(uint i) / while(i-); - - pwm #include / sbit led = p12; /ledled unsigned char cycle; / x 10 10 x 0.1ms unsigned char pwm_on ;/ /* */ /* */ /* */ void delay(unsigned int cnt) while(-cnt); /* */ /* */ /* */ main() bit flag; tmod |=0x01; / 0.1ms in 12m crystal th0=(65536-100)/256; tl0=(65536-100)%256; /0.1ms ie= 0x82; / tr0=1; cycle = 10; / 10 8 pwm256 while(!flag) delay(20000); / pwm_on+; / 仯 if(pwm_on = cycle) / 絽 豸 flag=1; while(flag) / delay(20000); pwm_on-; if(pwm_on = 0) flag=0; /* */ /* */ /* */ void tim(