calculatrice pic 16f877a

Question

bonjour
on me demande de réaliser une calculatrice à l&#8217;aide d&#8217;un microcontrôleur PIC 16F877A.
1-conception de la carte qui sert de simulateur  
2-programmation du microcontrôleur

comment faire et si une personne peut me donner le code source

chouaieb · Answer

unsigned short kp;  //store pressed value to be displayed on lcd
unsigned short kp_decimal; //store decimal value
unsigned short result=0;  //store the result of calculation
char result_text[4];  //store converted(string) result to be displayed on lcd
unsigned short num1,num2;   //store first number, store second number
unsigned short op;    //store operation sign
bit clr;   //flag for input again



// Keypad module connections
char  keypadPort at PORTD;
// End Keypad module connections

// LCD module connections
sbit LCD_RS at RB2_bit;
sbit LCD_EN at RB3_bit;
sbit LCD_D4 at RB4_bit;
sbit LCD_D5 at RB5_bit;
sbit LCD_D6 at RB6_bit;
sbit LCD_D7 at RB7_bit;

sbit LCD_RS_Direction at TRISB2_bit;
sbit LCD_EN_Direction at TRISB3_bit;
sbit LCD_D4_Direction at TRISB4_bit;
sbit LCD_D5_Direction at TRISB5_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// End LCD module connections



void keypad()
{
  do //enter do loop
  {
    kp = 0; // Reset input char variable

    do  // Wait for key to be pressed and released
    {
      kp = Keypad_Key_Click();    // Store key code in kp variable
    }while (!kp);  //stay in the loop if kp = 0, (if no button is pressed)

    switch (kp) //transform key to char to be displayed on LCD
    {

      
      case  1: kp = '7'; kp_decimal =7; break;
      case  2: kp = '8'; kp_decimal =8; break;
      case  3: kp = '9'; kp_decimal =9; break;
      case  4: kp = '/'; kp_decimal ='/'; break;
      case  5: kp = '4'; kp_decimal =4; break;
      case  6: kp = '5'; kp_decimal =5; break;
      case  7: kp = '6'; kp_decimal =6; break;
      case  8: kp = '*'; kp_decimal ='*'; break;
      case  9: kp = '1'; kp_decimal =1; break;
      case 10: kp = '2'; kp_decimal =2; break;
      case 11: kp = '3'; kp_decimal =3; break;
      case 12: kp = '-'; kp_decimal ='-'; break;
      case 13: kp = 'C'; clr=1; break;
      case 14: kp = '0'; kp_decimal =0; break;
      case 15: kp = '='; break;
      case 16: kp = '+'; kp_decimal ='+'; break;
    }

    if(kp != '#' && kp != '*')  // Print pressed key on LCD except '#' and '*'
    {
      Lcd_Chr_cp(kp);
    }
    
    if(kp=='#' || clr==1)break; //break from the loop if '#' is pressed or clr is set

  }while (1); //stay in the loop for ever

}


void main() 
{

  Keypad_Init();  // Initialize Keypad
  
  Lcd_Init();  // Initialize LCD
  Lcd_Cmd(_LCD_CLEAR); // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);   // Cursor off

  Lcd_out(1,6,"Calculator"); // welcome on LCD
  delay_ms(2000);
  Lcd_Cmd(_LCD_CLEAR); // Clear display
   
   
   Loop:  //main loop
   
    //Get First Number
     NO1_Loop:
      Lcd_out(1,1,"No1: ");
      keypad();   //go to keypad function to get the input
      if(clr==1) //if clr is set
      {
        lcd_out(1,5, "     "); //clear first number position
        clr=0;      //reset clear variable
        goto NO1_Loop; //return to get first number input
      }
      num1 = kp_decimal;  //store first number
      delay_ms(200);  //wait

     
     //Get Second Number
     NO2_Loop:
      Lcd_out(2,1,"No2: ");
      keypad();  //go to keypad function to get the input
      if(clr==1) //if clr is set
      {
        lcd_out(2,5, "     ");  //clear second number position
        clr=0;    //reset clear variable
        goto NO2_Loop;  //return to get second number input
      }
      num2 = kp_decimal; //store second number

      delay_ms(200); //wait

     
     //Get Operation
     OP_Loop:
      Lcd_out(3,1,"OP: ");
      keypad();   //go to keypad function to get the input
      if(clr==1)  //if clr is set
      {
        lcd_out(3,5, "     "); //clear operation position
        clr=0;  //reset clear variable
        goto OP_Loop; //return to get operation
      }
      op = kp_decimal; //store operation sign

      delay_ms(200); //wait

      
      //Do Calculations
      switch(op) //check operation sign
      {
         case '+': //if operation sign +
           result = num1 + num2; //add the two numbers and store the result
           ByteToStr(result,result_text); //convert to result to string
           lcd_out(4,1,"Sum = ");
           Lcd_out_cp(result_text); //display the result
         break; //end

         case '-': //if operation sign -
           result = num1 - num2;   //subtract the two numbers and store the result
           ByteToStr(result,result_text);  //convert to result to string
           lcd_out(4,1,"Difference = ");
           Lcd_out_cp(result_text);   //display the result
         break; //end

         case 'x':  //if operation sign x
           result = num1 * num2;    //multiply the two numbers and store the result
           ByteToStr(result,result_text); //convert to result to string
           lcd_out(4,1,"Product = ");
           Lcd_out_cp(result_text); //display the result
         break; //end

         case '/':  //if operation sign /
           result = num1 / num2;     //divide the two numbers and store the result
           ByteToStr(result,result_text);  //convert to result to string
           lcd_out(4,1,"Quotient  = ");
           Lcd_out_cp(result_text);  //display the result
         break; //end
      }
      
      //Enter keypad to clear
      keypad();
      if(clr==1)
      {
        Lcd_Cmd(_LCD_CLEAR); 
        clr=0; 
        goto Loop;
      }
      
   goto Loop; //return to main loop
}

Calculatrice pic 16f877a

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