单片机==矩阵键盘+时钟+键入时间+闹钟（12）

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于 2016-10-01 20:51:58 发布 · 4.3k 阅读

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#单片机 #矩阵键盘 #时钟 #键入时间 #闹钟

#include <reg52.h>
#include <intrins.h>
#include "delay.h"

#define SEGPORT P0
#define KEYPORT P1

sbit bit_select = P2^0;
sbit seg_select = P2^1;
sbit beep = P2^7;
sbit key6 = P3^2;

unsigned char bitdata[8] = {
  
  0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char segdata[10] = {
  
  0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char code freq[][2]={ 
  0xD8,0xF7,//00440HZ 1   
  0xBD,0xF8,//00494HZ 2  
  0x87,0xF9,//00554HZ 3  
  0xE4,0xF9,//00587HZ 4    
  0x90,0xFA,//00659HZ 5     
  0x29,0xFB,//00740HZ 6     
  0xB1,0xFB,//00831HZ 7      
  0xEF,0xFB,//00880HZ `1
};
unsigned char tempdata[8];
unsigned char sec = 0;
unsigned char min = 0;
unsigned char hour = 0;

unsigned char alarm_hour = 19;
unsigned char alarm_min = 8;
unsigned char alarm_sec = 21;


void timer0_init(void)
{
    EA = 1;
    TMOD |= 0x01;
    TH0 = (65536 - 50000) / 256;
    TL0 = (65536 - 50000) % 256;
    ET0 =