光电测速及LCD1602显示程序

#include#include#define uint unsigned int#define uchar unsigned charsbit rs=P26;sbit rw=P25;sbit e=P27;float f=0;int dec0=0;int dec1;float dec2=0;uchar LED0_data,LED1_data,LED2_data,LED3_data;uchar LED0_dat,LED1_dat,LED2_dat,LED3_dat,LED4_dat;uchar speed=speed:;uchar root=path:;uchar cm=cm/s;uchar m=.m;uchar i=0;void display();void delay(uint v);void initime(); /*定时器初始化*/void initime()TMOD=0x51; /T1计数器，T0定时器，方式1TL0=(65536-10000)%256;TH0=(65536-10000)/256;TL1=0;TH1=0;ET0=1;EA=1;void delay1ms(uint c) /误差 0us uchar a,b;for (; c0; c-) for (b=199;b0;b-) for(a=1;a0;a-); void dectobit()dec0=f*20.7; LED3_data=dec0/1000; dec0=dec0 % 1000;LED2_data=dec0/100;dec0=dec0 % 100;LED1_data=dec0/10;dec0=dec0 % 10;LED0_data=dec0;dec2=f*2.07345+dec2;dec1=dec2;LED4_dat=dec1/10000; dec1=dec1 % 10000;LED3_dat=dec1/1000; dec1=dec1 % 1000;LED2_dat=dec1/100;dec1=dec1 % 100;LED1_dat=dec1/10;dec1=dec1 % 10;LED0_dat=dec1;void write_com(uchar com)e=0;rs=0;rw=0;P0=com;delay1ms(1);e=1;delay1ms(5);e=0;void write_data(uchar dat)e=0;rs=1;rw=0;P0=dat;delay1ms(1);e=1;delay1ms(1);e=0; void Init()write_com(0x38);write_com(0x0c); write_com(0x06);write_com(0x01);write_com(0x80);void display()uchar j;write_com(0x80);for(j=0;j6;j+)write_data(speedj);write_com(0xc1);for(j=0;j5;j+)write_data(rootj);write_com(0x86);write_data(LED3_data+0x30);write_data(LED2_data+0x30);write_data(LED1_data+0x30);write_data(LED0_data+0x30);for(j=0;j4;j+)write_data(cmj);write_com(0xc6);write_data(LED4_dat+0x30);write_data(LED3_dat+0x30);write_data(LED2_dat+0x30);write_data(LED1_dat+0x30);write_data(m0);write_data(LED0_dat+0x30);write_data(m1);void main(void)initime();Init();TR0=1;TR1=1;while(1)display(); timer()interrupt 1i=i+1;if(i=10