0809,1602设计数字报警电压表(按键调节报警电压值)

1、.#include #include #define uchar unsigned char#define uint unsigned int uchar h,m,l; uchar o;sbit key3 =p35;sbit led =p20;sbit lcd_rs = p26; sbit lcd_rw = p25;sbit lcd_ep = p27;uchar code dis1 = 0123456789cv:.v;uchar code dis2 = 0123456789wv:.v;/0809sbit start =p24;sbit eoc =p23;sbit oe =p22;sbit cl

2、k =p21;uchar getdata=0,volt;uchar qian,bai,shi,ge; void adc0809() start =0; start =1; start =0; while(eoc=0); oe=1; getdata =p1 ; oe =0; void volt_result() volt=getdata*500/255; void dingshi() interrupt 3 clk=clk; void dschushihua() tmod=0x20; th1=0xfb; tl1=0xfb;tr1=1;精品. et1=1; ea=1; /延时函数void dela

3、y(int ms) uint i,tempcyc; for(i=0;ims;i+) tempcyc =70; while(tempcyc-); /测忙函数bit lcd_bz() bit result;lcd_rs = 0;lcd_rw = 1;lcd_ep = 1;_nop_();_nop_();_nop_();_nop_();result = (bit)(p0 & 0x80);lcd_ep = 0;return result;/写指令void lcd_wcmd(int cmd) while(lcd_bz();lcd_rs = 0;lcd_rw = 0;lcd_ep = 0;_nop_();

4、_nop_(); p0 = cmd;_nop_();_nop_(); _nop_();精品._nop_();lcd_ep = 1;_nop_();_nop_();_nop_();_nop_();lcd_ep = 0; p0 = (cmd&0x0f)4; _nop_();_nop_(); _nop_();_nop_();lcd_ep = 1;_nop_();_nop_();_nop_();_nop_();lcd_ep = 0; void lcd_pos(uchar pos) lcd_wcmd(pos | 0x80);/*写数据函数*/void lcd_wdat(uchar dat) while(

5、lcd_bz();lcd_rs = 1;lcd_rw = 0;lcd_ep = 0;p0 = dat ; _nop_();_nop_(); _nop_();_nop_();lcd_ep = 1;_nop_();_nop_();_nop_();_nop_();lcd_ep = 0; 精品.lcd_rs = 1;lcd_rw = 0;lcd_ep = 0;_nop_();_nop_();_nop_();_nop_();p0 = (dat&0x0f)0;p-) for(q=110;q0;q-); void int_init() ex0=1; it0=1; ex1=1; it1=1; ea=1; vo

6、id data_in(void) h=o/10; m=o%10; void l_count() if(key3=0) delay3(1); if(key3=0)if(l=9)l=0;elsel+; void xianshi2() lcd_pos(0x44); lcd_wdat(dis210);lcd_wdat(dis211);lcd_wdat(dis212);lcd_wdat(dis2h) ;精品.lcd_wdat(dis213);lcd_wdat(dis2m);lcd_wdat(dis2l);lcd_wdat(dis214); /比较 void comp() if(baih) led=1; else if(bai=h&shim) led=1; else if(bai=h&shi=m) if(gel) led=1; elseled=0; else led=0; void main()lcd_init();int_init();o=10;dschushihua();while(1)adc0809();volt_result();xianshi1(); data_in(); l_count(); xianshi2();comp();delay(100) ; void int0() interrupt 0 精品. delay3(10); if(int0=0) if(o=