51单片机 矩阵键盘计算器

#include "keyboard.h" #include "1602.h" uchar temp=0,wei=0,key=0; uchar jia=0,jian=0,cheng=0,chu=0,dengyu=0,qingling=0; uchar jia0=0,jian0=0,cheng0=0,chu0=0; uchar s0=0,s1=0,s2=0,s3=0,s4=0,s5=0,s6=0; //参加运算的各个位 uchar a0=16,b0=16,c0=16,d0=16,e0=16,f0=16,g0=16; unsigned long qian,hou;//定义参于运算的第一个数和第二个数。 uchar table[16]; void keyscan() { P2=0x7f; temp=P2; temp=temp&0x0f; if(temp!=0x0f) { key_delay(5); if(temp!=0x0f) { temp=P2; switch(temp) { case 0x7e: key=1; write_data(0x30+key); wei++; break; case 0x7d: key=2; write_data(0x30+key); wei++; break; case 0x7b: key=3; write_data(0x30+key); wei++; break; case 0x77: jia=1; write_data('+'); break; } while(temp!=0x0f) { temp=P2; temp=temp&0x0f; } } } P2=0xbf; temp=P2; temp=temp&0x0f; if(temp!=0x0f) { key_delay(5); if(temp!=0x0f) { temp=P2; switch(temp) { case 0xbe: key=4; write_data(0x30+key); wei++; break; case 0xbd: key=5; write_data(0x30+key); wei++; break; case 0xbb: key=6; write_data(0x30+key); wei++; break; case 0xb7: write_data('-'); jian=1; break; } while(temp!=0x0f) { temp=P2; temp=temp&0x0f; } } } P2=0xdf; temp=P2; temp=temp&0x0f; if(temp!=0x0f) { key_delay(5); if(temp!=0x0f) { temp=P2; switch(temp) { case 0xde: key=7; write_data(0x30+key); wei++; break; case 0xdd: key=8; write_data(0x30+key); wei++; break; case 0xdb: key=9; write_data(0x30+key); wei++; break; case 0xd7: cheng=1; write_data('*'); break; } while(temp!=0x0f) { temp=P2; temp=temp&0x0f; } } } P2=0xef; temp=P2; temp=temp&0x0f; if(temp!=0x0f) { key_delay(5); if(temp!=0x0f) { temp=P2; switch(temp) { case 0xee: qingling=1; write_com(0x01); break; case 0xed: key=0; write_data(0x30+key); wei++; break; case 0xeb: dengyu=1; write_data('='); break; case 0xe7: chu=1; write_data('/'); break; } while(temp!=0x0f) { temp=P2; temp=temp&0x0f; } } } } void calc() { uchar gongneng,yunsuan,i; gongneng=jia|jian|cheng|chu|dengyu|qingling; if(gongneng==0) { if(key!=20) { switch(wei) { case 1: a0=key; b0=10; c0=10; d0=10; e0=10; f0=10; g0=10; break; case 2: b0=key; c0=10; d0=10; e0=10; f0=10; g0=10; break; case 3: c0=key; d0=10; e0=10; f0=10; g0=10; break; case 4: d0=key; e0=10; f0=10; g0=10; break; case 5: e0=key; f0=10; g0=10; break; case 6: f0=key; g0=10; break; case 7: g0=key; break; } key=20; } if(a0!=10) s6=a0; if(b0!=10) s5=b0; if(c0!=10) s4=c0; if(d0!=10) s3=d0; if(e0!=10) s2=e0; if(f0!=10) s1=f0; if(g0!=10) s0=g0; } else { yunsuan=jia|jian|cheng|chu; if(yunsuan) { if(jia) {jia=0; jia0=1;jian0=0;cheng0=0;chu0=0;} if(jian) {jian=0;jia0=0;jian0=1;cheng0=0;chu0=0;} if(cheng) {cheng=0;jia0=0;jian0=0;cheng0=1;chu0=0;} if(chu) {chu=0; jia0=0;jian0=0;cheng0=0;chu0=1;} switch(wei) { case 7: qian=s6*1000000+s5*100000+s4*10000+s3*1000+s2*100+s1*10+s0;break; case 6: qian=s6*100000+s5*10000+s4*1000+s3*100+s2*10+s1;break; case 5: qian=s6*10000+s5*1000+s4*100+s3*10+s2;break; case 4: qian=s6*1000+s5*100+s4*10+s3;break; case 3: qian=s6*100+s5*10+s4;break; case 2: qian=s6*10+s5;break; case 1: qian=s6;break; } wei=0; s0=0;s1=0;s2=0;s3=0;s4=0;s5=0;s6=0; } if(dengyu) { dengyu=0; switch(wei) { case 7: hou=s6*1000000+s5*100000+s4*10000+s3*1000+s2*100+s1*10+s0;break; case 6: hou=s6*100000+s5*10000+s4*1000+s3*100+s2*10+s1;break; case 5: hou=s6*10000+s5*1000+s4*100+s3*10+s2;break; case 4: hou=s6*1000+s5*100+s4*10+s3;break; case 3: hou=s6*100+s5*10+s4;break; case 2: hou=s6*10+s5;break; case 1: hou=s6;break; } wei=0; s0=0;s1=0;s2=0;s3=0;s4=0;s5=0;s6=0; 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;} sprintf(table,"%ld",hou); write_com(0x80+0x40); for(i=0;table[i]!=0;i++) { write_data(table[i]); } // while(table[i]!=0) // { // write_data(table[i]); // i++; // } // for(i=0;i<=16;i++) // { // write_data(table[i]); // } } if(qingling) { s0=0;s1=0;s2=0;s3=0;s4=0;s5=0;s6=0; a0=0;b0=0;c0=0;d0=0;e0=0;f0=0;g0=0; jia=0;jian=0;cheng=0;chu=0; jia0=0;jian0=0;cheng0=0;chu0=0; qingling=0;dengyu=0; qian=0;hou=0; memset(table,0,16);//清空数组 } } } void key_delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); }