picsimlab 关于pic16f877A 无中断按键使用

只看该作者 · 2024-2-27 13:41

这次通过板上自带按键 RB3 和 RB4 完成

按下RB3 数字加一

按下RB4 数字减一

最大为9

最小为1

只看该作者 · 2024-2-27 13:42

主函数 main.c

// PIC16F877A Configuration Bit Settings

// 'C' source line config statements

// CONFIG
#pragma config FOSC = HS       // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF    // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF    // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON    // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = ON       // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3/PGM pin has PGM function; low-voltage programming enabled)
#pragma config CPD = OFF       // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF       // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF       // Flash Program Memory Code Protection bit (Code protection off)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>

//__CONFIG(0xFF32);//??xc8?????????????

#include "lcd1602.h"
#define uchar unsigned char
#define uint  unsigned int
#define K1 RB3
#define K2 RB4

unsigned char Tempmin = '0'; //  最小问题
unsigned char Tempmax = '1'; //  最大问题
uchar kflag = 0;

uchar ge=1;//????

void delay_1ms(void)
{
unsigned int n;
for(n=0;n<50;n++)
{
NOP();
}
}

void delay_ms(unsigned int time)

{
for(;time>0;time--)
{
      delay_1ms();
}
}

void Key()
{
if(K1&&K2)  // 按键没有按下
{
   kflag = 1;
}
else  // 按键按下
{
   if(kflag == 1)
   {
      kflag = 0;
      if(K1 == 0)
      {
            if(++Tempmax >= '9')
               Tempmax  = '9';

      }
      if(K2 == 0)
      {
            if(Tempmax > Tempmin+1)
            {
               --Tempmax;
            }
      }

   }
}

}
void main()
{
TRISB1=1;
LCD1602_GPIO_Init(); //????1602?????
LCD1602_init(); //1602?????

  while(1)
{

      DisplayListChar(0,0,"SPEED = ");
   // Tempvalue =  ReadTemperature();
   // Lcd_Display(7,1,Tempvalue);  //  显示温度值
      DisplayOneChar(8,0,Tempmax); //  最高温度

      Key();                      //  按键程序
  }

}

只看该作者 · 2024-2-27 13:45

lcd1602.c

//???pmlab x??????????????gb2312??
/*
lcd1602.c?lcd1602.h?????????????
DisplayListChar(unsigned charx, unsigned char y,unsigned char* str)???????
DisplayOneChar(unsigned charx, unsigned char y,unsigned char str)??????
x???y???ch?????'a'?str??????"i am a string"?
????????????lcd1602.h???#define??????
??lcd1602.c???void LCD1602_GPIO_Init(void)???????
*/
#include <pic.h>          //??PIC16F87XA???????
#include "lcd1602.h"

//1602???????
//---------------------------------------
void delay(void)
{
int i;
for (i = 0;i < 200;i++);
}

//---------------------------------------
//???1602?????
//---------------------------------------
void LCD1602_Write_Instruction(unsigned char combuf)
{
   Lcd_Date=combuf;    //??????RD???DB
   RS=0;             //???????
//    RW=0;             //?????
   E=0;
   delay();          //?????
   E=1;                //E?????????1602??
   asm("NOP");       //????????????????1us
   E=0;                //???????E???
}

//---------------------------------------
//???1602?????
//---------------------------------------
void LCD1602_Write_data(unsigned char databuf)
{
   Lcd_Date=databuf; //??????RD???DB
   RS=1;             //???????
//  RW=0;             //?????
   E=0;
   delay();          //?????
   E=1;                //E?????????1602??
   asm("NOP");       //????????????????1us
   E=0;                //???????E???
}

//---------------------------------------
//???1602???????
//---------------------------------------
void LCD1602_init(void)
{
   LCD1602_Write_Instruction(0x38);  //8?????????????5*7????
   LCD1602_Write_Instruction(0x08);  //?????????
   LCD1602_Write_Instruction(0x01);  //??
   LCD1602_Write_Instruction(0x06);  //???????????????????
   LCD1602_Write_Instruction(0x0C);  //?????????
}

/****************??????????????*************/

void DisplayOneChar(unsigned char X,unsigned char Y,const unsigned char DData)
{
Y&=1;
X&=15;
if(Y)X|=0x40;             //?y?1???????????+0X40
X|=0x80;                   //???????+0X80
LCD1602_Write_Instruction(X);
LCD1602_Write_data(DData);
}

/***********??????????????***********/

void DisplayListChar(unsigned char X,unsigned char Y,const unsigned char *DData)
{
unsigned char ListLength=0;
Y&=0x01;
X&=0x0f;
while(X<16 && DData[ListLength])
{
      DisplayOneChar(X,Y,DData[ListLength]);
      ListLength++;
      X++;
}
}

void LCD1602_GPIO_Init(void)
{
ADCON1=0X07;//??A?????????????????IO
TRISE=0B11111001;    //RA5 RA2 RA3??
TRISD=0B00000000;    //RD7-RD0??
PORTA=0B00000000;    //???RA7-RA0???
PORTD=0B00000000;    //???RD7-RD0???
}

只看该作者 · 2024-2-27 13:46

lcd1602.h

//???pmlab x??????????????gb2312??
/*
lcd1602.c?lcd1602.h?????????????
DisplayListChar(unsigned charx, unsigned char y,unsigned char* str)???????
DisplayOneChar(unsigned charx, unsigned char y,unsigned char str)??????
x???y???ch?????'a'?str??????"i am a string"?
????????????lcd1602.h???#define??????
??lcd1602.c???void LCD1602_GPIO_Init(void)???????
*/
#ifndef  __LCD1602_H
#define  __LCD1602_H

//---------------------------------------
//1602????I/O??
#define E RE1          //1602???E???RA3??
//#define RW  RW       //1602???RW???RA2??
#define RS  RE2          //1602???RS???RA5??
#define Lcd_Date PORTD    //LCD1602????

void delay(void);
void LCD1602_Write_Instruction(unsigned char combuf);
void LCD1602_Write_data(unsigned char databuf);
void LCD1602_init(void);
void DisplayOneChar(unsigned char X,unsigned char Y,const unsigned char DData);
void DisplayListChar(unsigned char X,unsigned char Y,const unsigned char *DData);
void LCD1602_GPIO_Init(void);

#endif

只看该作者 · 2024-2-27 13:47