单片机按键+定时程序循环问题

ID:468415 · 发表于 2022-7-8 09:28

麻烦大佬给看一下，这个程序中，count赋值大一点（目前是1），按键在按的时候就不正常了，单片机源码如下：
#include "reg52.h"

/*宏定义*/
#define FOSC 11059200L
#define T1MS (65536-FOSC/12/1000) /*1ms timer calculation method in 12Tmode*/
#define const_key_time_short1  60 /*短按的按键去抖延时时间*/
#define const_key_time_long1 1000    /*长按的按键去抖延时时间*/
#define const_key_time_short2  60 /*短按的按键去抖延时时间*/
#define const_key_time_long2 1000    /*长按的按键去抖延时时间*/
/*变量函数定义及申明*/
sbit ADDR0 = P1^0;
sbit ADDR1 = P1^1;
sbit ADDR2 = P1^2;
sbit ADDR3 = P1^3;
sbit ENLED = P1^4;
sbit Key_S1 = P2^4;
sbit Breathe_Led = P0^0;
sbit Led_Red = P0^1;
sbit Led_Green = P0^2;
sbit V_buss = P0^3;
sbit Op_Ion_Fan = P0^4;

unsigned char ucKeySec = 0; /*被触发的按键编号*/
unsigned int  uiKeyTimeCnt1 = 0; /*按键去抖延时计数器*/
unsigned char ucKeyLock1 = 0; /*按键触发后自锁的变量标志*/
unsigned char ucShortTouchFlag1=0; /*短按触发标志*/
unsigned int  uiVoiceCnt = 0;  /*蜂鸣器叫的持续时间计数器*/
unsigned int number;
unsigned int num;
unsigned int min;
unsigned int count;
unsigned char flag = 0;
unsigned char on_off = 0;
unsigned char flag1 = 0;

void Init_T0(void)
      {
      TMOD = 0x01;                   /*set timer0 as mode1 (16-bit)*/
      TL0 = T1MS;                   /*initial timer0 low byte*/
      TH0 = T1MS >> 8;             /*initial timer0 high byte*/
      }

void Init_Peripheral(void)
      {
      ET0 = 1;/*允许定时中断*/
      TR0 = 1;/*启动定时中断*/
      EA = 1;/*开总中断*/
      }

void Init(void)
      {
      Init_T0();
      Op_Ion_Fan = 0;
      Led_Green = 1;
      Led_Red = 1;
      Breathe_Led = 1;
      }
void Power_off()
{
      Op_Ion_Fan = 0;
      Led_Red = 1;
      Led_Green = 1;
      Breathe_Led = 1;
}
void Work_Mode1(void)
{
      Op_Ion_Fan = 1;
      Led_Red = 1;
      Led_Green = 0;
      Breathe_Led = 0;
}

void Work_Mode2(void)
{
      Op_Ion_Fan = 0;
      Led_Red = 1;
      Led_Green = 0;
      Breathe_Led = 0;
}

void Strong_Mode()
{
      Op_Ion_Fan = 1;
      Led_Red = 0;
      Led_Green = 1;
      Breathe_Led = 0;
}

void Key_Scan(void)
      {
/*扫描S1*/
            if(Key_S1 == 1) /*如果按键没有被按下，将一些标志位及时清零*/
            {
            ucKeyLock1 = 0;/*自锁标志位清0*/
            uiKeyTimeCnt1 = 0;/*按键去抖延时计数器清零*/
                     if(ucShortTouchFlag1 == 1)/*短按*/
                     {
                     ucShortTouchFlag1 = 0;
                     ucKeySec = 1; /*触发S1短按*/
                     }
            }
      else if(ucKeyLock1 == 0) /*如果有按键按下，且是第一次按下*/
            {
            uiKeyTimeCnt1 ++;
            if(uiKeyTimeCnt1 > const_key_time_short1)/*判定短按*/
                     {
                     ucShortTouchFlag1 = 1;/*激活短按有效标志位*/
                     }
            if(uiKeyTimeCnt1 > const_key_time_long1)/*判定长按*/
                     {
                     ucShortTouchFlag1 = 0;/*清除短按有效标志位*/
                     uiKeyTimeCnt1 = 0;
                     ucKeyLock1 = 1;/*自锁按键置位，避免一直触发*/
                     ucKeySec = 2; /*触发S1长按*/
                     }
            }
      }

void key_Service(void)
{
      if((ucKeySec == 2) && (on_off == 0) )/*开机并确定是否为USB供电*/
      {
            on_off = 1;
            ucKeySec = 0;
            flag = 1;
      }
      if((ucKeySec == 2) && (on_off == 1))
      {
            on_off = 0;
            Power_off();
            ucKeySec = 0;
      }
      if((on_off == 1) && (flag1 == 0)&& (flag == 1) && (count >= 1))
      {
            flag1 = 1;
            count = 0;
            Work_Mode1();
      }
      if((on_off == 1) && (flag1 == 1) && (flag == 1) && (count >= 1))
      {
            flag1 = 0;
            count = 0;
            Work_Mode2();
      }
      if((ucKeySec == 1) && (on_off == 1) && (flag == 1))
      {
            flag = 0;
            Strong_Mode();
            ucKeySec = 0;
      }
      if((ucKeySec == 1) && (on_off == 1) && (flag == 0))
      {
            flag = 1;
            ucKeySec = 0;
      }
}

void ISR_T0(void) interrupt 1
      {
      TF0 = 0;  /*清除中断标志*/
  TR0 = 0; /*关中断*/
/*扫描按键*/
      Key_Scan();
      TL0 = T1MS;                   /*initial timer0 low byte*/
      TH0 = T1MS >> 8;             /*initial timer0 high byte*/
  TR0 = 1; /*开中断*/
      number++;
      if(number >= 100)
      {
            num++;
            number = 0;
            }
            if(num>=10)
            {
                     num = 0;
                     count ++;
            }
      }

void Delay_Long(unsigned int uiDelayLong)
      {
unsigned int i;
unsigned int j;
for(i=0;i<uiDelayLong;i++)
                     {
   for(j=0;j<500;j++)  /*内嵌循环的空指令数量*/
      {
         ; /*一个分号相当于执行一条空语句*/
      }
                     }
      }

      /*主函数*/
void main()
      {
      /*单片机初始化*/
      Init();
      /*延时，延时时间一般是0.3-2秒之间，等待外围芯片和模块上电稳定*/
      Delay_Long(100);
      /*单片机外围初始化*/
      Init_Peripheral();
      ENLED = 0;
      ADDR3 = 1;
      ADDR2 = 1;
      ADDR1 = 1;
      ADDR0 = 0;
      P2 = 0xF7;
      while(1)
            {
            /*按键服务函数*/
      key_Service();
            }
      }

ID:883242 · 发表于 2022-7-8 13:00

先把count改成char型试试。

ID:468415 · 发表于 2022-7-8 13:02

Hephaestus 发表于 2022-7-8 13:00
先把count改成char型试试。

好的，我试下，谢谢！

ID:140489 · 发表于 2022-7-8 13:07

if(num>=10)
            {
                     num = 0;
                     count ++;
            }

把count++改成count=1；试试

ID:468415 · 发表于 2022-7-8 13:25

lids 发表于 2022-7-8 13:07
if(num>=10)
{
num = 0;

count = 1 的话，后面如何增加这个数值呢？因为目前count = 1 就是1秒钟，后面如何做时间加长处理呢？

ID:213173 · 发表于 2022-7-8 14:09

Key_Scan函数已经放在T0中断函数中运行，其中uiKeyTimeCnt1就是1ms计时单位，键值ucKeySec=2就含有长按1秒的时间信息，再增加count判断就多余了。把number、num、count统统去掉。

ID:468415 · 发表于 2022-7-8 14:23

wulin 发表于 2022-7-8 14:09
Key_Scan函数已经放在T0中断函数中运行，其中uiKeyTimeCnt1就是1ms计时单位，键值ucKeySec=2就含有长按1秒 ...

count是1秒定时，里面有一个循环模式，这个变量值是需要调整的，有可能是20秒，也有可能是60秒，所以是需要这个count的

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