[Osama Mohammed]

Thank you all, 

[Osama Mohammed]

Thanks, now it’s working 

[Osama Mohammed]

wysiwyg_imageupload:12491:

[Osama Mohammed]

#include <reg51.h>

msDelay(unsigned int);

 

cmd(unsigned char); //LCD command code initialization 

dat(unsigned char ); // LCD data code initialization 

sbit regs=P2^6;  //name the pin register select of the lcd

sbit enab=P2^7;

sbit rd=P2^5;

 

void LCD_write_string(unsigned char *str)   //store address value of the string in pointer *str

{

    unsigned char j = 0;

    while (str[j] != 0)

    {

        dat(str[j]);      // sending data on LCD byte by byte

        msDelay(100);

                j++;

    }

    return;

}

 

void main (void)

{

cmd(0x38);

msDelay(100);

cmd(0x0C);

msDelay(100);

cmd(0x01);

msDelay(100);

 

while(1)

{

LCD_write_string(“osama”);

msDelay(2000);

cmd(0x01);

msDelay(2000);

 

}

 

}

 

 

cmd(unsigned char value)

{

 P1=value;

 regs=0;

 rd=0;

 enab=0;

 msDelay(500);

 enab=1;

}

dat(unsigned char info)

{

 P1=info;

  regs=1;

  rd=0;

 enab=0;

 msDelay(500);

 enab=1;

}

 

msDelay(unsigned int tdelay)

{

 unsigned int k,j;

 for(k=0;k<=tdelay;k++)

 for(j=0;j<=100;j++);

 

}

 

 

 

 

 

 

 

---

 

 

 

 

This is a code I used to test the LCD , it is not the code that I use in the project that I am working in but just to test the LCD ,but unfortunately this is not working

[Osama Mohammed]

Thank you,

I have bought HC-05 bluetooth module , and I will try it soon ….  

[Osama Mohammed]

Thanks all , the problem is solved ! 

I found that the problem was from the voltage supply ,although I am using 5v regulator to supply the microcontroller but the microcontroller was unable to function with it, I don’t know why is this but maybe the voltage regulator is of bad quality !!

 

I tried to supply it with a 5v from 5v of the Arduino UNO board and the 8051 led blinking circuit worked well , this is how I detected where is the problem.

 

 

but now I am facing another problem ,the LCD in my circuit is not working !!.

 

when I tried the LCD code and circuit with ISIS proteus simulation it was working fine ,but when implementing it on my breadboard it doesn’t work ……. !!!!!!!!!!!! this would drive me crazy !!.

 

 

 

 

 

[Osama Mohammed]

Okay send me 

Thank you

 

[Osama Mohammed]

Please I hgave another question 

 

my hex code file is 9 kilo bytes in size

 

can it be used with 89C52 ?

[Osama Mohammed]

Hi,

 

 

Thank you all,

 

the problem is solved

 

the if statement argument was wrong ,that is all !! 

 

 

 

 

 

Dishant 

 thank you for posting this function I will try it 

[Osama Mohammed]

Hi,

 

 

Thank you all,

 

the problem is solved

 

the if statement argument was wrong ,that is all !! 

 

 

 

 

 

SHAH DISHANT H. thank you for posting this function I will try it 

[Osama Mohammed]

Thanks, 

The problem is solved 

but now I have another problem, 

I don’t know how to display decimal numbers on LCD , for example 244 how if I want to display on LCD ?

Also how to display a number preserved inside a variable ,for instance if k is a variable and k=200; , how to display this value of k ????

[Osama Mohammed]

Thank you guys,

[Osama Mohammed]

thanks you guys, 

[Osama Mohammed]

 

 

 

no my simulation is working good without the delay function ,when I use the delay function it stops working 

 

 

anyway I tried to reduce the 1275 to 100 ,and it worked and it has worked well 

 

but know how could I calibrate the function to return 1 second delay when I enter 1000 ms to the function arguement msDelay(1000)

[Osama Mohammed]

This is the code of a setpper motor

I am using ISIS Proteus 

when I run the code with that delay function the execution us stuck in the function  !!

when I remove this delay function the code is executed normally and continually without stopping !

I tried to make many modfiications but nothing works 

 

#include <reg51.h>

msDelay(unsigned int);

 

#define stepperPort P2

 

void main (void)

{

 

stepperPort=0x03;

msDelay(4000);

stepperPort=0x06;

msDelay(4000);

stepperPort=0x0C;

msDelay(4000);

stepperPort=0x09;

msDelay(4000);

 

 

} 

 

 

 

msDelay(unsigned int tdelay)

{

 unsigned k,j;

 for(k=0;k<=tdelay;k++)

 for(j=0;j<=1275;j++);

 

}

[Author]

Posts