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 CLK

2、 =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; ET1=1; EA=1; /延时函数void delay(in

3、t 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_();_nop

4、_(); P0 = cmd;_nop_();_nop_(); _nop_();_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(lcd_bz(

5、);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; 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; void data_in

6、(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) ;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 delay3(1