矩阵键盘在数码管上显示1-16

root_robot

于 2016-09-13 22:11:31 发布

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分类专栏：单片机文章标签：单片机矩阵键盘数字

本文链接：https://blog.youkuaiyun.com/root_robot/article/details/52530123

版权

#include <reg52.h>

#include "./delay/delay.h"

#define PORTLEN P0
#define KEYPORT P1

sbit bit_select = P2^0;
sbit seg_select = P2^1;

unsigned char duanma[16] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char weima[8] = {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char qrc[2] = {0x3f,0x3f};

void timer0_init(void)
{
    EA = 1;

    TMOD |= 0x01;
    TH0 = (65536 - 2000) / 256;
    TL0 = (65536 - 2000) % 256;
    ET0 = 1;
    TR0 = 1;
}

void display()
{

    static unsigned char i = 0;
    PORTLEN = 0x0;
    seg_select = 1;
    seg_select = 0; 
			
    PORTLEN = 0xff;
    bit_select = 1;
    bit_select = 0;
			
    PORTLEN = qrc[i];
    seg_select = 1;
    seg_select = 0;
					
    PORTLEN = weima[i];