练习.zip

#include <REGX52.H> sbit a = P2^2; sbit b = P2^3; sbit c = P2^4; unsigned char code SMGSZ[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0xff}; unsigned int i; unsigned char KeyNum; //4x4键盘 返回值 void Delay(unsigned int xms) { unsigned char i, j; while(xms--) { i = 2; j = 239; do { while (--j); } while (--i); } } void SMG(x1,x2,x3,x4,x5,x6,x7,x8) { a=1; b=1; c=1; P0=SMGSZ[x1]; Delay(1); P0=0x00; a=0; b=1; c=1; P0=SMGSZ[x2]; Delay(1); P0=0x00; a=1; b=0; c=1; P0=SMGSZ[x3]; Delay(1); P0=0x00; a=0; b=0; c=1; P0=SMGSZ[x4]; Delay(1); P0=0x00; a=1; b=1; c=0; P0=SMGSZ[x5]; Delay(1); P0=0x00; a=0; b=1; c=0; P0=SMGSZ[x6]; Delay(1); P0=0x00; a=1; b=0; c=0; P0=SMGSZ[x7]; Delay(1); P0=0x00; a=0; b=0; c=0; P0=SMGSZ[x8]; Delay(1); P0=0x00; } unsigned char MatrixKey() { unsigned char KeyNumber=0; P1=0xFF; P1_3=0; if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=1;} if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=5;} if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=9;} if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=13;} P1=0xFF; P1_2=0; if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=2;} if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=6;} if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=10;} if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=14;} P1=0xFF; P1_1=0; if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=3;} if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=7;} if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=11;} if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=15;} P1=0xFF; P1_0=0; if(P1_7==0){Delay(20);while(P1_7==0);Delay(20);KeyNumber=4;} if(P1_6==0){Delay(20);while(P1_6==0);Delay(20);KeyNumber=8;} if(P1_5==0){Delay(20);while(P1_5==0);Delay(20);KeyNumber=12;} if(P1_4==0){Delay(20);while(P1_4==0);Delay(20);KeyNumber=16;} return KeyNumber; } void main() { while(1) { KeyNum=MatrixKey(); if(KeyNum== 1) { i=1; } if(KeyNum== 2) { i=2; } if(KeyNum== 3) { i=3; } if(KeyNum== 4) { i=4; } if(KeyNum== 5) { i=5; } if(KeyNum== 6) { i=6; } if(KeyNum== 7) { i=7; } if(KeyNum== 8) { i=8; } if(KeyNum== 9) { i=9; } if(KeyNum== 10) { i=10; } if(KeyNum== 11) { i=11; } if(KeyNum== 12) { i=12; } if(KeyNum== 13) { i=13; } if(KeyNum== 14) { i=14; } if(KeyNum== 15) { i=15; } if(KeyNum== 16) { i=16; } SMG(i/10%10,i%10,11,11,11,11,11,11); } }