STC开发板相关程序，C语言例程34个

/**********************HJ-3G实验开发板例程************************ * 晶振:11.0592MHZ ****************************************************************** 程序功能：按下键盘矩阵后，在六个数码管上依次显示所按下的键所代表的数字。 按复位键可以清空显示为0 ******************************************************************/ #include<reg51.h> #define uchar unsigned char uchar a0=16,b0=16,c0=16,d0=16,e0=16,f0=16,wei,temp,key,i,j,k; uchar jia,jian,cheng,chu,dengyu,qianready,jia0,jian0,cheng0,chu0,qingling; uchar s0,s1,s2,s3,s4,s5; //参加运算的各个位 long qian,hou;//定义参于运算的第一个数和第二个数。 sbit dula=P2^6; sbit wela=P2^7; sbit beep=P2^3; unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00}; void delay(uchar i) { for(j=i;j>0;j--) for(k=125;k>0;k--); } void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f) { dula=0; P0=table[a]; dula=1; dula=0; wela=0; P0=0xfe; wela=1; wela=0; delay(5); P0=table[b]; dula=1; dula=0; P0=0xfd; wela=1; wela=0; delay(5); P0=table[c]; dula=1; dula=0; P0=0xfb; wela=1; wela=0; delay(5); P0=table[d]; dula=1; dula=0; P0=0xf7; wela=1; wela=0; delay(5); P0=table[e]; dula=1; dula=0; P0=0xef; wela=1; wela=0; delay(5); P0=table[f]; dula=1; dula=0; P0=0xdf; wela=1; wela=0; delay(5); } void keyscan() { { P3=0xfe; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { delay(10); if(temp!=0xf0) { temp=P3; switch(temp) { case 0xee: key=0; wei++; break; case 0xde: key=1; wei++; break; case 0xbe: key=2; wei++; break; case 0x7e: key=3; wei++; break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; beep=0; } beep=1; } } P3=0xfd; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { delay(10); if(temp!=0xf0) { temp=P3; switch(temp) { case 0xed: key=4; wei++; break; case 0xdd: key=5; wei++; break; case 0xbd: key=6; wei++; break; case 0x7d: key=7; wei++; break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; beep=0; } beep=1; } } P3=0xfb; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { delay(10); if(temp!=0xf0) { temp=P3; switch(temp) { case 0xeb: key=8; wei++; break; case 0xdb: key=9; wei++; break; case 0xbb: qingling=1; //key=10; //wei++; break; case 0x7b: dengyu=1; //key=11; //wei++; break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; beep=0; } beep=1; } } P3=0xf7; temp=P3; temp=temp&0xf0; if(temp!=0xf0) { delay(10); if(temp!=0xf0) { temp=P3; switch(temp) { case 0xe7: jia=1; //key=12; // wei++; break; case 0xd7: jian=1; //key=13; //wei++; break; case 0xb7: cheng=1; //key=14; //wei++; break; case 0x77: chu=1; //key=15; //wei++; break; } while(temp!=0xf0) { temp=P3; temp=temp&0xf0; beep=0; } beep=1; } } } } void display0() { if(key!=20) { switch(wei) { case 1: a0=key; b0=16; c0=16; d0=16; e0=16; f0=16; break; case 2: b0=key; c0=16; d0=16; e0=16; f0=16; break; case 3: c0=key; d0=16; e0=16; f0=16; break; case 4: d0=key; e0=16; f0=16; break; case 5: e0=key; f0=16; break; case 6: f0=key; //wei=0; break; } key=20; } display(a0,b0,c0,d0,e0,f0); if(a0!=16) s5=a0; if(b0!=16) s4=b0; if(c0!=16) s3=c0; if(d0!=16) s2=d0; if(e0!=16) s1=e0; if(f0!=16) s0=f0; } void jieguo() { switch(wei) { case 6: hou=s5*100000+s4*10000+s3*1000+s2*100+s1*10+s0;break; case 5: hou=s5*10000+s4*1000+s3*100+s2*10+s1;break; case 4: hou=s5*1000+s4*100+s3*10+s2;break; case 3: hou=s5*100+s4*10+s3;break; case 2: hou=s5*10+s4;break; case 1: hou=s5;break; } wei=0; s0=0;s1=0;s2=0;s3=0;s4=0;s5=0; } void fenwei() { if(hou<10) { a0=hou;b0=16;c0=16;d0=16;e0=16;f0=16; } else { if(hou<100) {a0=hou/10;b0=hou%10;c0=16;d0=16;e0=16;f0=16;} else { if(hou<1000) {a0=hou/100;b0=hou%100/10;c0=hou%10;d0=16;e0=16;f0=16;} else { if(hou<10000) {a0=hou/1000;b0=hou%1000/100;c0=hou%100/10;d0=hou%10;e0=16;f0=16;} else { if(hou<100000) {a0=hou/10000;b0=hou%10000/1000;c0=hou%1000/100;d0=hou%100/10;e0=hou%10;f0=16;} else { if(hou<1000000) {a0=hou/100000;b0=hou%100000/10000;c0=hou%10000/1000;d0=hou%1000/100;e0=hou%100/10;f0=hou%10;} } } } } } display(a0,b0,c0,d0,e0,f0); P1=hou; } void main() { uchar gongneng,yunsuan; while(1) { keyscan(); gongneng=jia|jian|cheng|chu|dengyu|qingling; if(gongneng==0) { display0(); } else { yunsuan=jia|jian|cheng|chu; if(yunsuan) { a0=16; b0=16; c0=16; d0=16; e0=16; f0=16; //wei=0; if(jia) { jia=0; jia0=1;jian0=0;cheng0=0;chu0=0; if(qianready) { jieguo(); hou=hou+qian; fenwei(); } } if(jian) { jian=0;jia0=0;jian0=1;cheng0=0;chu0=0; jieguo(); hou=qian-hou; fenwei(); } if(cheng) { cheng=0;jia0=0;jian0=0;cheng0=1;chu0=0; jieguo(); hou=qian*hou; fenwei(); } if(chu) { chu=0; jia0=0;jian0=0;cheng0=0;chu0=1; jieguo(); hou=qian/hou; fenwei(); } if(qianready==0) { switch(wei) { case 6: qian=s5*100000+s4*10000+s3*1000+s2*100+s1*10+s0;break; case 5: qian=s5*10000+s4*1000+s3*100+s2*10+s1;break; case 4: qian=s5*1000+s4*100+s3*10+s2;break; case 3: qian=s5*100+s4*10+s3;break; case 2: qian=s5*10+s4;break; case 1: qian=s5;break; } qianready=1; } wei=0; s0=0;s1=0;s2=0;s3=0;s4=0;s5=0; display(a0,b0,c0,d0,e0,f0); //P1=0x55; } if(dengyu) { dengyu=0; //display(16,16,16,16,16,16); jieguo(); if(jia0) {jia0=0; hou=qian+hou;} if(jian0) {jian0=0; hou=qian-hou;} if(cheng0) {cheng0=0; hou=qian*hou;} if(chu0) {chu0=0; hou=qian/hou;} fenwei(); } if(qingling) { a0=16;b0=16;c0=16;d0=16;e0=16;f0=16; s0=0;s1=0;s2=0;s3=0;s4=0;s5=0; jia=0;jian=0;cheng=0;chu=0; jia0=0;jian0=0;cheng0=0;chu0=0; qingl