四个按键如何实现以下功能？

只看该作者 · 2017-4-11 20:06

四个按键，要求的功能是K1：通道选择（2路），K2：确定，K3:计数加一，K4是计数减一。。。。在定时计数器0中扫描键盘。。。。

只看该作者 · 2017-4-11 20:12

本帖最后由紫℡憶星宸于 2017-4-11 20:14 编辑

程序是自己编的，现在是功能实现不了

#define K1  (((~PINB)&0x01)==0x01)  //K1按键按下，等待输入设定值
#define K2  (((~PINB)&0x02)==0x02)  //K2按键按下，输入结束
#define K3  (((~PINB)&0X04)==0X04)  //K3按键按下，设定值加一
#define K4  (((~PINB)&0X08)==0X08)  //K4按键按下，设定值减一
#define K_up  ((!K1)|(!K2)|(!K3)|(!K4))//没有按键按下

unsigned char adc0_set = 0;
unsigned char adc2_set = 0;
unsigned char key_count = 1;//用于通道选择

float pwm1_duty = 0.0;
float pwm2_duty = 0.0;

float set1_value = 0.0;
float set2_value = 0.0;

//LCD1602显示标志
unsigned char key0_view[17]={"  CH1 L:  000R  "};
unsigned char key1_view[17]={"    I:0.000A  "};
unsigned char key2_view[17]={"  CH2 L:  000R  "};
unsigned char key3_view[17]={"    I:0.000A  "};

#define Ch1 (key_count%2==0)
#define Ch2 (key_count%2==1)

//键盘扫描
void key_scan(void)
{
unsigned char i;
unsigned int key_num;

i = 0;
key_num = 0;

  if(K1)//SW1按下
  {
delay_ms(10);//延时去抖
      if(K1)
      {
      key_count++;
      while(!K1)//等待K1按键弹起
         continue;
      while(!K2)
      {
         if(K1)
         {
         delay_ms(10);
         if(K1)
         key_count++;
         while(!(K1))
               continue;
         }
         if(K3)
         {
            delay_ms(10);
            if((K3)&(Ch1))
               {
                  if(adc0_set==250) //越界保护，使设定值在0-250
                     adc0_set = 250;
                  else
                  adc0_set++;
         }
               if((K3)&(Ch2))
         {
                  if(adc2_set==250)
                     adc2_set = 250;
                  else
                     adc2_set++;
         }
               i = 20;
               while((!K3)|(i>0))
               {
                  i--;
                  delay_ms(10);//按键连续按下时，每200ms加一
               }
         }
         if(K4)
         {
            delay_ms(10);
                  if((K4)&(Ch1))
                  {
                  if(adc0_set == 0)
                     adc0_set = 0;
         else
                     adc0_set--;
                  }
               if((K4)&(Ch2))
         {
                     if(adc2_set == 0)
                     adc2_set = 0;
            else
                     adc2_set--;
                  }
         i = 20;
               while((!K4)|(i>0))
               {
                  i--;
                  delay_ms(10);
               }
         }
   if((Ch1)&(K_up))
         {
            pwm1_duty = (float)adc0_set/250.0;//计算占空比
               set1_value = pwm1_duty*1.0;//24V1A的设定值
            key_num = (unsigned int)(set1_value*1000);

            key0_view[12] = adc0_set%10+0x30;//级数显示
         key0_view[11] = adc0_set/10%10+0x30;
               key0_view[10] = adc0_set%100+0x30;

               key1_view[12] = (unsigned char)(key_num%10)+0x30;//设定电流值显示
               key1_view[11] = (unsigned char)(key_num/10%10)+0x30;
               key1_view[10] = (unsigned char)(key_num/100%10)+0x30;
               key1_view[8] =  (unsigned char)(key_num%1000)+0x30;

            writechar(1,0,16,key0_view);//lcd1602显示数值
            writechar(2,0,16,key1_view);
               delay_ms(500);//防止刷新频繁
         }
         if((Ch2)&(K_up))
         {
            pwm2_duty = (float)adc2_set/250.0;
               set2_value = pwm2_duty*2.0;
               key_num = (unsigned int)(set2_value*1000);

               key2_view[12] = adc2_set%10+0x30;
               key2_view[11] = adc2_set/10%10+0x30;
               key2_view[10] = adc2_set%100+0x30;

               key3_view[12] = (unsigned char)(key_num%10)+0x30;
               key3_view[11] = (unsigned char)(key_num/10%10)+0x30;
               key3_view[10] = (unsigned char)(key_num/100%10)+0x30;
               key3_view[8] =  (unsigned char)(key_num%1000)+0x30;

            writechar(1,0,16,key2_view);//显示数值
            writechar(2,0,16,key3_view);
            delay_ms(500);
         }
         }
      key_count = 1;
      }
  }
}