基于51单片机的直流稳压电源设计

#include<reg52.h> /*-------------------------------------------------------------------------------------------------------------------- -----------------±äÁ¿¶¨Òå---------------------- -------------------------------------------------------------------------------------------------------------------*/ #define uchar unsigned char #define uint unsigned int sbit key1=P1^0; //¶Ë¿Ú¶¨Òå,Ñ¡Ôñ¹â±êÔÚ¸öλ»òʮλ sbit key2=P1^1; //¹â±ê´¦µçѹΪ1Êä³ö sbit key3=P1^2; //¹â±ê´¦µçѹΪ2Êä³ö sbit key4=P1^3; //È·¶¨Êä³öµçѹ sbit key03=P2^0; //¹â±ê´¦µçѹΪ3Êä³ö sbit key04=P2^1; //¹â±ê´¦µçѹΪ4Êä³ö sbit key05=P2^2; sbit key06=P2^3; sbit key07=P2^4; sbit key08=P2^5; sbit key09=P2^6; //¹â±ê´¦µçѹΪ9Êä³ö sbit rs=P1^4; sbit en=P1^5; sbit DAC_CS=P3^2; sbit DAC_WR=P3^6; sbit ADC_CS=P0^0; sbit ADC_DI=P0^1; sbit ADC_DO=P0^2; uchar code table1[]=" liu do"; //³õʼ»¯ÏÔʾ uchar code table2[]=" dianya :0.0V "; //³õʼ»¯µçÔ´ uchar s1,s2,keynum,volt; /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void delay(uint z) º¯Êý¹¦ÄÜ: ÑÓʱº¯Êý £¨ºÁÃ뼶£© Êä È룺unit z ·µ »Ø£º µ÷Óú¯Êý: ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void write_com() º¯Êý¹¦ÄÜ: дָÁîµ½LCD1602 Êä È룺uchar com ·µ »Ø£º µ÷Óú¯Êý: ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void write_com(uchar com) { rs=0; en=0; P0=com; delay(5); en=1; delay(5); en=0; } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void write_date() º¯Êý¹¦ÄÜ: дÊý¾Ýµ½LCD1602 Êä È룺uchar data ·µ »Ø£ºÎÞ µ÷Óú¯Êý: ÎÞ ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void write_date(uchar date) { rs=1; en=0; P0=date; delay(5); en=1; delay(5); en=0; } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void write_date() º¯Êý¹¦ÄÜ: lCD1602³õʼ»¯×Ó³ÌÐò Êä È룺ÎÞ ·µ »Ø£ºÎÞ µ÷Óú¯Êý: ÎÞ ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void Init() { uchar num; en=0; write_com(0x38); //ÖõØÖ· write_com(0x0c); write_com(0x06); //¹â±êÓÒÒÆ write_com(0x01); //ÇåÏÔʾ write_com(0x80); //lcd DDRAMÉèÖà for(num=0;num<16;num++) { write_date(table1[num]); delay(50); } write_com(0x80+0x40); //lcdµÚ¶þÐÐ for(num=0;num<14;num++) { write_date(table2[num]); delay(50); } } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void write_voltage() º¯Êý¹¦ÄÜ: дµçѹµ½lCD1602 Êä È룺uchar add,uchar dat ·µ »Ø£ºÎÞ µ÷Óú¯Êý: ÎÞ ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void write_voltage(uchar add,uchar dat) { write_com(0x80+0x40+add); //È·¶¨µÚ¶þÐÐλÖà write_date(0x30+dat); //дÊý¾Ý } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void DA0832out() º¯Êý¹¦ÄÜ: дµçѹÊý¾Ýµ½DAC0832 Êä Èë:char dadata ·µ »Ø£ºÎÞ µ÷Óú¯Êý: ÎÞ ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void DA0832out(uchar dadata) { DAC_CS=0; P0=dadata; DAC_WR=0; delay(5); DAC_WR=1; DAC_CS=1; } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void AD0832out() º¯Êý¹¦ÄÜ: дµçѹÊý¾Ýµ½ADC0832 Êä Èë:char dadata ·µ »Ø£ºÎÞ µ÷Óú¯Êý: ÎÞ ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void AD0832out(uchar dadata) { ADC_CS=0; P0=dadata; ADC_DI=0; delay(5); ADC_DO=1; ADC_CS=1; } /*-------------------------------------------------------------------------------------------------------------------- º¯ÊýÈ«³Æ: void keyscan() º¯Êý¹¦ÄÜ: ¼üÅÌɨÃè×Ó³ÌÐò Êä Èë:char dadata ·µ »Ø£ºÎÞ µ÷Óú¯Êý:write_com();write_voltage(); Da0832out(); ×¢ÒâÊÂÏ Ìáʾ˵Ã÷£º -------------------------------------------------------------------------------------------------------------------*/ void keyscan() { if(key1==0) { delay(5); if(key1==0) { keynum++; while(!key1); //°´×¡ÖÃÒ»Ö±µ½·ÅÊÖ if(keynum==1) //µÈÓÚ 1 { write_com(0x80+0x40+12); write_com(0x0f); //ÖÃÊý¾ÝÏÔʾµØÖ· } } if(keynum==2) //deng=2,ce jia 1 { write_com(0x80+0x40+10); //ÖÃÊý¾ÝÏÔʾµØÖ· write_com(0x0f); } if(keynum==3) //ÈôµÈÓÚ 3, { keynum=0; write_com(0x0c); //²âÎ޹رê } } if(keynum!=0) { if(key2==0) { delay(5); if(key2==0) { while(!key2); if(keynum==1) {