[问答]

ds1302 1602程序

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问答对人有帮助，内容完整，我也想知道答案 0 最近做数字钟，写了一段1302的程序，用1602显示。还没加按键部分程序。初步调试结果数字显示出错，求助有经验的朋友，分析一下程序出错的根源。谢谢。程序如下： #include #define uc unsigned char *it rs=P3^5; it wr=P3^6; //1602 bit definitions it lcden=P3^4; it dula=P2^6; it wela=P2^7; //bit definitions it sclk=P2^4; it io=P2^5; it rst=P1^1; it A0=ACC^0; it A7=ACC^7; uc table1[]=" 20-- --/--/---"; //codes uc table2[]=" --:--:-- ---C "; uc table3[]="0123456789"; //uc sec1,sec2,min1,min2,hr1,hr2,date1,date2,mon1,mon2,year1,year2,tem,weekday; uc sec,min,hr,date,mon,year,weekday; void delay(uc x); void display_1602(); void write_com1602(uc com); void write_data1602(uc dat); void initial_1602(); void initial_1302(); void write_byte1302(uc dat); uc read_byte1302(); void write_1302(uc add,uc dat); uc read_1302(uc add); uc bcd_convert(uc bcd); //16-10 void data_processing(); //read data and convert it void main() { initial_1602(); delay(5); initial_1302(); delay(5); while(1) { write_1302(0x8e,0x00); data_processing(); write_1302(0x8e,0x80); delay(5); display_1602(); } } // 1602 settings*// void initial_1602() { uc a; dula=0; wela=0; write_com1602(0x38); //delay(20); write_com1602(0x0c); //开显示，关光标 // delay(20); write_com1602(0x06); //光标右移，字符不移 // delay(20); write_com1602(0x01); //清屏 delay(20); write_com1602(0x80); a=0; while(table1[a]!='') { //display initial codes write_data1602(table1[a]); delay(5); a++; } a=0; write_com1602(0x80+0x40); while(table2[a]!='') { write_data1602(table2[a]); delay(5); a++; } } void write_com1602(uc com) // { P0=com; wr=0; rs=0; lcden=0; delay(5); lcden=1; delay(5); lcden=0; } void write_data1602(uc dat) // { P0=dat; wr=0; rs=1; lcden=0; delay(5); lcden=1; delay(5); lcden=0; } void display_1602() { write_com1602(0x80+0x03); // write_data1602(table3[year1]); //year // write_data1602(table3[year2]); write_data1602(table3[year/10]); write_data1602(table3[year%10]); write_com1602(0x80+0x06); // write_data1602(table3[mon1]); //month // write_data1602(table3[mon2]); write_data1602(table3[mon/10]); write_data1602(table3[mon%10]); write_com1602(0x80+0x09); //date // write_data1602(table3[date1]); // write_data1602(table3[date2]); write_data1602(table3[date/10]); write_data1602(table3[date%10]); write_com1602(0x80+0x0c); //weekday switch(weekday) { case 1: write_data1602('M'); write_data1602('O'); write_data1602('N'); break; case 2: write_data1602('T'); write_data1602('U'); write_data1602('E'); break; case 3: write_data1602('W'); write_data1602('E'); write_data1602('D'); break; case 4: write_data1602('T'); write_data1602('H'); write_data1602('U'); break; case 5: write_data1602('F'); write_data1602('R'); write_data1602('I'); break; case 6: write_data1602('S'); write_data1602('A'); write_data1602('T'); break; case 7: write_data1602('S'); write_data1602('U'); write_data1602('N'); break; default: write_data1602('M'); write_data1602('O'); write_data1602('N'); break; } write_com1602(0x80+0x40+0x02); // write_data1602(table3[hr1]); //hour // write_data1602(table3[hr2]); write_data1602(table3[hr/10]); write_data1602(table3[hr%10]); write_com1602(0x80+0x40+0x05); // write_data1602(table3[min1]); //minute // write_data1602(table3[min2]); write_data1602(table3[min/10]); write_data1602(table3[min%10]); write_com1602(0x80+0x40+0x08); //second // write_data1602(table3[sec1]); // write_data1602(table3[sec2]); write_data1602(table3[sec/10]); write_data1602(table3[sec%10]); / write_com1602(0x80+0x40+0x0c); / //temprature } //*********************// void delay(uc x) { uc a,b; //delay function for(a=x;a>0;a--) for(b=110;b>0;b--); } //******1302 settings****// void initial_1302() { rst=0; sclk=0; write_1302(0x8e,0x80); //write enable write_1302(0x80,0x30); //second write_1302(0x82,0x31); //miniute write_1302(0x84,0x19); //hour write_1302(0x86,0x04); //date write_1302(0x88,0x11); //month write_1302(0x8a,0x01); //weekday write_1302(0x8c,0x13); //year write_1302(0x8e,0x80); //write protection } void write_byte1302(uc dat) { uc i; ACC=dat; rst=1; for(i=0;i<8;i++) { A0=io; sclk=0; sclk=1; ACC=ACC>>1; } } uc read_byte1302() { uc i; rst=1; //read enable for(i=0;i<8;i++) { ACC=ACC>>1; sclk=1; //falling pulse to read sclk=0; A7=io; } return (ACC); } void write_1302(uc add,uc dat) { rst=0; sclk=0; rst=1; // rising pulse to write write_byte1302(add); write_byte1302(dat); sclk=1; rst=0; } uc read_1302(uc add) { uc temp; rst=0; sclk=0; rst=1; write_byte1302(add); temp=read_byte1302(); sclk=1; rst=0; return(temp); } uc bcd_convert(uc bcd)//BCD码转十进制函数，输入BCD，返回十进制 { uc number; number=((bcd&0xf0)>>4)10+bcd&0x0f; return (number); } //********************// void data_processing() //process details concerning about clock { uc temp; temp=read_1302(0x81); //second processing // sec1=(temp&0xf0)>>4; // sec2=temp&0x0f; sec=bcd_convert(temp); temp=read_1302(0x83); //minute processing // min1=(temp&0xf0)>>4; //min2=temp&0x0f; min=bcd_convert(temp); temp=read_1302(0x85); //hour processing // hr1=(temp&0xf0)>>4; // hr2=temp&0x0f; hr=bcd_convert(temp); temp=read_1302(0x87); //date processin // date1=(temp&0xf0)>>4; // date2=temp&0x0f; date=bcd_convert(temp); temp=read_1302(0x89); //mon processing // mon1=(temp&0xf0)>>4; // mon2=temp&0x0f; mon=bcd_convert(temp); temp=read_1302(0x8b); //weekday processing weekday=bcd_convert(temp); temp=read_1302(0x8d); //year processing // year1=(temp&0xf0)>>4; // year2=temp&0x0f; year=bcd_convert(temp); //******convert the initial tables defined above// } 0
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