Need help getting a circuit to simulate with an 8051, the reg51 file wont read

[ssotek]

I am working on a project for school to count the number of poeple that enter and exit our library.  I have gotten the circuit to work.  I have gotten the code to run.  When I put the two together in multisim and build i get error can't include file reg51.h  no such file or directory.  I do have the file and directory in the project folder though. please help 🙂

[Tayyab_R]

Hi ssotek,

Is it possible for you to upload the files. I will take a look to see what is going on.

[ssotek]

Here is the code for both the reg51 file and the program file

Reg51.h files

#ifndef REG51_H
#define REG51_H

/*  BYTE Register  */
sfr at 0x80 P0   ;
sfr at 0x90 P1   ;
sfr at 0xA0 P2   ;
sfr at 0xB0 P3   ;
sfr at 0xD0 PSW  ;
sfr at 0xE0 ACC  ;
sfr at 0xF0 B    ;
sfr at 0x81 SP   ;
sfr at 0x82 DPL  ;
sfr at 0x83 DPH  ;
sfr at 0x87 PCON ;
sfr at 0x88 TCON ;
sfr at 0x89 TMOD ;
sfr at 0x8A TL0  ;
sfr at 0x8B TL1  ;
sfr at 0x8C TH0  ;
sfr at 0x8D TH1  ;
sfr at 0x8E AUXR ;
sfr at 0xA8 IE   ;
sfr at 0xB8 IP   ;
sfr at 0x98 SCON ;
sfr at 0x99 SBUF ;

/*  BIT Register  */
/*  PSW   */
sbit at 0xD7 CY   ;
sbit at 0xD6 AC   ;
sbit at 0xD5 F0   ;
sbit at 0xD4 RS1  ;
sbit at 0xD3 RS0  ;
sbit at 0xD2 OV   ;
sbit at 0xD0 P    ;

/*  TCON  */
sbit at 0x8F TF1  ;
sbit at 0x8E TR1  ;
sbit at 0x8D TF0  ;
sbit at 0x8C TR0  ;
sbit at 0x8B IE1  ;
sbit at 0x8A IT1  ;
sbit at 0x89 IE0  ;
sbit at 0x88 IT0  ;

/*  IE   */
sbit at 0xAF EA   ;
sbit at 0xAC ES   ;
sbit at 0xAB ET1  ;
sbit at 0xAA EX1  ;
sbit at 0xA9 ET0  ;
sbit at 0xA8 EX0  ;

/*  IP   */
sbit at 0xBC PS   ;
sbit at 0xBB PT1  ;
sbit at 0xBA PX1  ;
sbit at 0xB9 PT0  ;
sbit at 0xB8 PX0  ;

/*  P3  */
sbit at 0xB7 RD   ;
sbit at 0xB6 WR   ;
sbit at 0xB5 T1   ;
sbit at 0xB4 T0   ;
sbit at 0xB3 INT1 ;
sbit at 0xB2 INT0 ;
sbit at 0xB1 TXD  ;
sbit at 0xB0 RXD  ;

/* P1 */
sbit at 0x90 P1_0 ;
sbit at 0x91 P1_1 ;
sbit at 0x92 P1_2 ;
sbit at 0x93 P1_3 ;
sbit at 0x94 P1_4 ;
sbit at 0x95 P1_5 ;
sbit at 0x96 P1_6 ;
sbit at 0x97 P1_7 ;

/*  SCON  */
sbit at 0x9F SM0  ;
sbit at 0x9E SM1  ;
sbit at 0x9D SM2  ;
sbit at 0x9C REN  ;
sbit at 0x9B TB8  ;
sbit at 0x9A RB8  ;
sbit at 0x99 TI   ;
sbit at 0x98 RI   ;

/* TMOD bits */
#define GATE1   (1<<7)
#define C_T1    (1<<6)
#define M1_1    (1<<5)
#define M0_1    (1<<4)
#define GATE0   (1<<3)
#define C_T0    (1<<2)
#define M1_0    (1<<1)
#define M0_0    (1<<0)

/* T2CON */
sfr at 0xC8 T2CON ;

/* T2CON bits */
sbit at 0xC8 T2CON_0 ;
sbit at 0xC9 T2CON_1 ;
sbit at 0xCA T2CON_2 ;
sbit at 0xCB T2CON_3 ;
sbit at 0xCC T2CON_4 ;
sbit at 0xCD T2CON_5 ;
sbit at 0xCE T2CON_6 ;
sbit at 0xCF T2CON_7 ;

/* RCAP2 L & H */
sfr at 0xCB RCAP2H;
sfr at 0xCA RCAP2L;

#endif

here is the program file

#include<reg51.h>
#define msec 1
unsigned int num=0;
sbit dig_ctrl_4=P1^3;  //DECLARE THE CONTROL OR ENABLE PINS OF SEVEN SEGMENTS
sbit dig_ctrl_3=P1^2;
sbit dig_ctrl_2=P1^1;
sbit dig_ctrl_1=P1^0;
unsigned int digi_val[10]={0x40,0xF9,0x24,0x30,0x19,0x12,0x02,0xF8,0x00,0x10};
unsigned int dig_1,dig_2,dig_3,dig_4,test=0;
unsigned char dig_disp=0;
sbit up=P3^5; //up pin to make counter count up
sbit down=P3^6;  //down pin to make counter count down

void init() //to initialize the output pins and timer 0
{
 up=down=1;
 dig_ctrl_4=0;
 dig_ctrl_3=0;
 dig_ctrl_2=0;
 dig_ctrl_1=0;
 TMOD=0x01;
 TL0=0xf6;
 TH0=0xFf;
 IE=0x82;
 TR0=1;
}

void delay() //to provide delay
{
 TMOD=0x01;
 TL0=0x36;
 TH0=0xF6;
 TR0=1;
 while(TF0==0);
 TR0=0;
 TF0=0;
}

void display() interrupt 1 //function to display the digits on 7 seg LED's
{
 TL0=0x36;
 TH0=0xf6;
 P2=0xFF;
 dig_ctrl_1=dig_ctrl_3=dig_ctrl_2=dig_ctrl_4=0;
 dig_disp++;
 dig_disp=dig_disp%4;
 switch(dig_disp)
{

  case 0:
  P2=digi_val[dig_1];
  dig_ctrl_1=1;
  break;

  case 1:
  P2=digi_val[dig_2];
  dig_ctrl_2=1;
  break;

  case 2:
  P2=digi_val[dig_3];
  dig_ctrl_3=1;
  break;

  case 3:
  P2=digi_val[dig_4];
  dig_ctrl_4=1;
  break;

 }
}

void main()
{
 init();
 while(1);
{
  if(up==0&&down==1) //check if up pin is pressed
  {
   test++;
   num=test;
   dig_4=num%10;
   num=num/10;
   dig_3=num%10;
   num=num/10;
   dig_2=num%10;
   dig_1=num/10;
   if(test==9999)
   test=0;

  }
  if(up==1&&down==0) //check down pin is pressed
  {
    test--;
    num=test/30;
    dig_4=num%10;
    num=num/10;
    dig_3=num%10;
    num=num/10;
    dig_2=num%10;
    dig_1=num/10; if(test==0)
    test=9999;
   }
  }
 }

your help if greatly appreciated 🙂

[Tayyab_R]

Hi ssotek,

I will need to take a look at the actual project file that you are building in Multisim which includes your circuit because you are having a problem with compiling it there. The code looks good but the issue is with the compilation so the Multisim file is necessary for troubleshooting.

[ssotek]

Here is the attached project

[Tayyab_R]

Hi ssotek,

The include statement should be #include "reg51.h" as this is a user defined header file.

[ssotek]

Thank you for the help 🙂  now i have more errors that I do not know about.  I think I am just gonna rewrite it from scratch

[Fahim_Askar]

Hi Everybody
Can Any one tell me
How to Clear a error in both .asm&.c file?(example:ERROR #2)

[Fahim_Askar]

Srry I m not include software
It is Multisim 11.0.1