Programatic RESET is not working in atmega32a

[veerubiji]

Hi,

I am trying to reset atmega32a programmatically. It can be done with watchdog timer. In my case i am trying to reset the timer when i send some command from PC.

I have written code like this for that function.

case(RESET):        
            #asm("CLI");        //Disable global interrupt
            MCUSR = 0x00;
            #asm("WDR");
            WDTCR=0x1B;
            WDTCR=0x0B;
            while(1);           //Wait for reset
            Command = 0;
            break;

but this is not working, can anyone help me what i am doing wrong or how to reset ATmega32A programmatically. When i send "RESET" command from PC then it has to reset micro controller.

 

[jayanth.devarayanadurga]

If watch dog resets these codes doesn't get executed.

WDTCR=0x1B;
WDTCR=0x0B;
while(1); //Wait for reset
Command = 0;

Is Watch Dog Timer enabled?

 

[veerubiji]

Is Watch Dog Timer enabled?[/QUOTE]

I am trying to enable and reset the controller and disable WDT in the same command. Is it possible? I have looked into the fuse bits about watchdog enabled or not i didn't find anything about.

 

[jayanth.devarayanadurga]

After there is a controller reset how can you disable WDT? You can't do it.