AT89C2051 not working URGENT

[amayilsamy]

I'm using AT89C2051 for small function..

I post My code and schematic.. it is working Proteus in my circuit is not worked.

  #include<reg51.h>

  sbit led = P1^7;

  sbit sw  = P1^6;



  int i,a;

  void delay(unsigned int ms) ;

  void main()
  		
			{
			P0=0x00;

			while(1)
			{
			  P1=0x00;
//			led  = 1;
//			sw   = 0;

		
			delay(10);

//			led  = 0;
//			sw   = 1;
			P1=0xff;
			delay(1);
			}

			}

void delay(unsigned int ms)
			
		{

			for(a=0;a<=5;a++)
				{
					for(i=0;i<=10000;i++);
					for(i=0;i<=10000;i++);
					for(i=0;i<=10000;i++);
				}
		}

 

[jayanth.devarayanadurga]

delay(10) is too fast. You can't see led blinking. Try delay(10000). remove the line P1 = 0xFF and P1 = 0x00

 

[amayilsamy]

I changed delay(10000) and removed the lines P1=0x00; P1=0xff; Again its not work..

And I also see the output in scope..

And I power up the controller all pins in high (4.85 V) except P1.1,P1.0.

I try to low the all port pins its doesn't work.

void main()
{
while(1)
{
P1=0x00;
P3=0x00;

}
}

 

[jayanth.devarayanadurga]

Maybe it is a problem with Proteus 89C2051 model. Try in hardware. Are you sure you have included the right device header file in the code?

Copy paste this hex data to a txt file and save it as .hex file and use this file and see if it works.

:03000000020003F8
:0C000300787FE4F6D8FD7581070200004C
:00000001FF

 

[getavinks@gmail.com]

hello,
while you program the ic , open and see the hex file is there some program , because in some compiler hex for 2051 will not be produced . or you could check this same code with 4051. once i had also got a problem like this my compiler was not producing proper hex file.