| mega8+1602+1302+18b20做的电子万年历 编程环境是cvavr 还望各位高手多多指点 先上图  (原文件名:20100404001.jpg)  (原文件名:20100404002.jpg)  (原文件名:20100404003.jpg)  (原文件名:20100404009.jpg)  (原文件名:20100404010.jpg)  (原文件名:20100404011.jpg)  (原文件名:20100404012.jpg) 1602 #define RS PORTD.7 #define RW PORTD.6 #define EN PORTD.5 #define LCD_DAT PORTC unsigned char lcd_buffer[]; void wr_lcd_inf(unsigned char com,unsigned char inf) { unsigned char com_temp,data_temp; DDRD=0b11100001;//lcd控制引脚 if(com==0) { delay_ms(3); RS=0; RW=0; EN=0; DDRC=0x0f;//lcd数据引脚 com_temp=inf; LCD_DAT=0x0f&com_temp>>4;//消除对PORTC.4的影响 EN=1; EN=0; com_temp=inf; LCD_DAT=0x0f&com_temp; EN=1; EN=0; } else { delay_ms(3); RS=1; RW=0; EN=0; DDRC=0x0f;//lcd数据引脚 data_temp=inf; LCD_DAT=0x0f&data_temp>>4; EN=1; EN=0; data_temp=inf; LCD_DAT=0x0f&data_temp; EN=1; EN=0; } } void wr_address(unsigned char x,unsigned char y) { unsigned char address; if(y>0) address=0xc0+x; else address=0x80+x; wr_lcd_inf(0,address); } void wr_lcd_word(unsigned char x,unsigned char y,unsigned char s) { wr_address(x,y); wr_lcd_inf(1,s); } void wr_lcd_string(unsigned char x,unsigned char y,unsigned char *s) { wr_address(x,y); while(*s) { wr_lcd_inf(1,*s); s++; } } void lcd_init() { wr_lcd_inf(0,0x28);//设置为4线，2行，5*7字型 wr_lcd_inf(0,0x06);//AC+1 wr_lcd_inf(0,0x0c);//开启显示屏，光标关闭，不闪烁 wr_lcd_inf(0,0x01);//清楚显示屏 } 18b20 #define TEMP_DAT PORTD.4 unsigned char buffer[];//显示字符串缓存 unsigned char temper[5]; void ds18b20_init(void) { TEMP_DAT=1; DDRD.4=0; delay_us(50); TEMP_DAT=0; DDRD.4=1;//设置输出口 delay_us(900); TEMP_DAT=1; DDRD.4=0;//设置输出口 delay_us(50); while(PIND.4) { wr_lcd_inf(0,0x01); sprintf(buffer,"no ds18b20"); wr_lcd_string(2,0,buffer); } delay_us(500); TEMP_DAT=1; DDRD.4=0; } void wr_ds18b20_dat(unsigned char ds18b20_dat)//写数据 { unsigned char i; for(i=0;i<8;i++) { TEMP_DAT=1; DDRD.4=1; delay_us(10); TEMP_DAT=0; delay_us(10); TEMP_DAT=0x1&ds18b20_dat;//与 delay_us(60); ds18b20_dat=ds18b20_dat>>1; } TEMP_DAT=1; DDRD.4=1; delay_us(30); } unsigned char re_ds18b20_dat() { unsigned char i,ds18b20_dat=0; for(i=0;i<8;i++) { TEMP_DAT=1; DDRD.4=1; delay_us(10); ds18b20_dat=ds18b20_dat>>1; TEMP_DAT=0; DDRD.4=1; delay_us(10); TEMP_DAT=1; DDRD.4=0; delay_us(10); if(PIND.4) { ds18b20_dat=0x80|ds18b20_dat; } delay_us(60); } TEMP_DAT=1; DDRD.4=1; delay_us(30); return ds18b20_dat; } void set_ds18b20()//设定精度 { ds18b20_init(); wr_ds18b20_dat(0xcc); wr_ds18b20_dat(0x4e); wr_ds18b20_dat(0x00); wr_ds18b20_dat(0x00); wr_ds18b20_dat(0x7f);//精度为12位 } unsigned int get_ds18b20() { unsigned char teml,temh,wm; unsigned int warm, cold; set_ds18b20(); ds18b20_init(); wr_ds18b20_dat(0xcc); wr_ds18b20_dat(0x44);//开始转换 delay_ms(1000); ds18b20_init(); wr_ds18b20_dat(0xcc);//跳过ROM wr_ds18b20_dat(0xbe);//读可擦写芯片(9 byte) teml=re_ds18b20_dat();//低8位 temh=re_ds18b20_dat();//高8位 wm=temh; wm=wm>>7; if(!wm) { temh&=0b00000111; warm=(unsigned int)((temh*256+teml)*0.0625*100); return warm; } else { temh&=0b00000111; cold=(unsigned int)((~(temh*256+teml)+1)*0.0625*100); cold+=20000; //0下-号显示标记 return cold; } } void trans_ds18b20() { unsigned int T; T=get_ds18b20(); temper[0]=T/10000+48; temper[1]=T/1000%10+48; temper[2]=T/100%10+48; temper[3]=T/10%10+48; temper[4]=T%10+48; } 1302 #define SCLK PORTB.0 #define RST PORTB.1 #define IO PORTB.2 unsigned char time[8]; void ds1302_wdat(unsigned char ds1302_wdat) { unsigned char i; for(i=0;i<8;i++) { IO=0; DDRB.2=1; SCLK=0; DDRB.0=1; if(ds1302_wdat&0x01)//与 IO=1; SCLK=1; ds1302_wdat=ds1302_wdat>>1; } } unsigned char ds1302_rdat() { unsigned char i,ds1302_dat=0; for(i=0;i<8;i++) { DDRB.2=0; IO=1; DDRB.0=1; SCLK=1; SCLK=0; ds1302_dat=ds1302_dat>>1; if(PINB.2) ds1302_dat=ds1302_dat|0b10000000;//或 } return(ds1302_dat); } unsigned char re_ds1302(unsigned char ds1302_address) { unsigned char ds1302_dat; DDRB.1=1; RST=0; DDRB.0=1; SCLK=0; RST=1; ds1302_wdat(ds1302_address); ds1302_dat=ds1302_rdat(); RST=0; return(ds1302_dat); } void wr_ds1302(unsigned char ds1302_address,unsigned char ds1302_dat) { DDRB.1=1; RST=0; DDRB.0=1; SCLK=0; RST=1; ds1302_wdat(ds1302_address); ds1302_wdat(ds1302_dat); RST=0; } /* void set_ds1302() { wr_ds1302(0x8e,0x00); ds1302_wdat(0xbe); ds1302_wdat(0x50); ds1302_wdat(0x00); ds1302_wdat(0x00); ds1302_wdat(0x02); ds1302_wdat(0x04); ds1302_wdat(0x05); ds1302_wdat(0x10); ds1302_wdat(0x8e); } */ void set_ds1302() { wr_ds1302(0x8e,0x80); wr_ds1302(0x80,0x50); wr_ds1302(0x82,0x59); wr_ds1302(0x84,0x22); wr_ds1302(0x86,0x02); wr_ds1302(0x88,0x04); wr_ds1302(0x8a,0x05); wr_ds1302(0x8c,0x10); wr_ds1302(0x8e,0x80); wr_ds1302(0x90,0xab); } void read_ds1302() { time[0]=re_ds1302(0x81);//秒 time[1]=re_ds1302(0x83);//分 time[2]=re_ds1302(0x85);//小时 time[3]=re_ds1302(0x87);//日期 time[4]=re_ds1302(0x89);//月份 time[5]=re_ds1302(0x8b);//星期 time[6]=re_ds1302(0x8d);//年份 } 还没有写按键程序 下面是pcb和程序 点击此处下载 ourdev_543690.rar(文件大小:17K) (原文件名:avr mega8数字表.rar) 点击此处下载 ourdev_543691.rar(文件大小:94K) (原文件名:mega8.rar) |