Pic software problem - Electronic Circuits Projects Diagrams Free

shahzad-h · 5th December 2007, 06:46 PM

Hi to all

I m facing problem of dumping the code in PIC18F452 i m using software winpic800 when i load the hex file in the code area and want to dump the software gives me error at start as in picture
PLz help to solve the problem
Thanks

**Nigel Goodwin** · 5th December 2007, 07:50 PM

That means the PIC hasn't been programmed at all, 0xFFFF is what a completely blank device reads, or no PIC connected to the programmer. The most common reason is too little voltage to switch the PIC to programming mode - but you don't mention what programmer you're using?.

shahzad-h · 6th December 2007, 12:59 PM

Hi Goodwin
Thanks for reply i m using the pic programmer on website(www.coolcircuit.com) and the program code is of 2.09KB the program is on website microchip.com with application note number AN843
plz help to solve problem
Thanks

**Nigel Goodwin** · 6th December 2007, 02:04 PM

That looks a fairly standard David Tait type clone, what are you using for the power supply?, the circuit doesn't seem to mention it?.

shahzad-h · 7th December 2007, 03:07 PM

I m using universal voltage dc adapter gives voltage up to 18v i think the problem is due to software because when i enter the code and disconnect my programmer and by pressing programall button the same error appears
and when code is not entered and by pressing programall button no error appears
thanks

**Nigel Goodwin** · 7th December 2007, 03:59 PM

Is your supply regulated or unregulated?, an unregulated supply may (and often does) have too much ripple on it to work.

You think wrong, those actions are exactly what I would expect.

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5th December 2007, 07:50 PM	(permalink)
Nigel Goodwin	That means the PIC hasn't been programmed at all, 0xFFFF is what a completely blank device reads, or no PIC connected to the programmer. The most common reason is too little voltage to switch the PIC to programming mode - but you don't mention what programmer you're using?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

6th December 2007, 12:59 PM	(permalink)
shahzad-h	Hi Goodwin Thanks for reply i m using the pic programmer on website(www.coolcircuit.com) and the program code is of 2.09KB the program is on website microchip.com with application note number AN843 plz help to solve problem Thanks

6th December 2007, 02:04 PM	(permalink)
Nigel Goodwin	That looks a fairly standard David Tait type clone, what are you using for the power supply?, the circuit doesn't seem to mention it?. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

7th December 2007, 03:07 PM	(permalink)
shahzad-h	I m using universal voltage dc adapter gives voltage up to 18v i think the problem is due to software because when i enter the code and disconnect my programmer and by pressing programall button the same error appears and when code is not entered and by pressing programall button no error appears thanks

7th December 2007, 03:59 PM	(permalink)
Nigel Goodwin	Is your supply regulated or unregulated?, an unregulated supply may (and often does) have too much ripple on it to work. You think wrong, those actions are exactly what I would expect. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk