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用單片機(jī)C語言編程實現(xiàn)單個數(shù)碼管顯示按下按鍵編號（S1按下顯示0，S2按下顯示1…S16按下顯示F）#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
unsigned char const
ceshi[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar keyscan(void);
void delay(uint i);
void main ()
{
uchar key;
P2=0x00;
while(1)
{
key=keyscan();
switch(key)
{
case 0x7e:P0=ceshi[0];break;
case 0x7d:P0=ceshi[1];break;
case 0x7b:P0=ceshi[2];break;
case 0x77:P0=ceshi[3];break;
case 0xbe:P0=ceshi[4];break;
case 0xbd:P0=ceshi[5];break;
case 0xbb:P0=ceshi[6];break;
case 0xb7:P0=ceshi[7];break;
case 0xde:P0=ceshi[8];break;
case 0xdd:P0=ceshi[9];break;
case 0xdb:P0=ceshi[10];break;
case 0xd7:P0=ceshi[11];break;
case 0xee:P0=ceshi[12];break;
case 0xed:P0=ceshi[13];break;
case 0xeb:P0=ceshi[14];break;
case 0xe7:P0=ceshi[15];break;
}
}
}
uchar keyscan(void)
{
uchar cord_h,cord_1;
P3=0x0f;
cord_h=P3&0x0f;
if(cord_h!=0x0f)
{
delay(100);
if(cord_h=P3&0x0f)
{
cord_h=P3&0x0f;
P3=cord_h|0xf0;
cord_1=P3&0xf0;
return(cord_h+cord_1);
}
}
return(0xff);
}
void delay(uint i)
{
while(i--);
}
矩陣鍵盤.rar
(39.39 KB, 下載次數(shù): 16)
2021-1-9 01:24 上傳
點擊文件名下載附件
下載積分: 黑幣 -5
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