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Good question.  I've heard of the Ponyprog but I'm not familiar with it.  
I thought it just programmed PIC's.

I use a MicroEngineering EPIC Plus programmer for PIC's and have had no 
trouble with it at all.  They update their software every time a new 
device comes out.  I have had no trouble with my STK500 for AVR's so far, 
either.

Maybe it's a software problem?  It would have to be either that or 
something wrong with the programmer hardware.

Zack

On Wed, 20 Oct 2004, abbas raftari wrote:

> Hi;
> I work with Ponyprog program for AVR & PIC programing .
> I made a SI-prog programer and PIC programer adapter for PIC programing.
> I can program (read & write) many PIC series for exampel 16F84A but I can't
> program PIC 12C5xx series. I can just only read it but i can't write it.
> I check many 12c508a and after 4 or 5 times IC be damaged.
> please , say me what's the problem?
> your sincerely : A-Raftari
>

--- In AVR-Chat@yahoogroups.com, abbas raftari <araftary1@y...> wrote:
> Hi;
> I work with Ponyprog program for AVR & PIC programing .
> I made a SI-prog programer and PIC programer adapter for PIC 
programing.
> I can program (read & write) many PIC series for exampel 16F84A but 
I can't
> program PIC 12C5xx series. I can just only read it but i can't 
write it.
> I check many 12c508a and after 4 or 5 times IC be damaged.
> please , say me what's the problem?
> your sincerely : A-Raftari
>

The PIC chips come in 3 basic varieties.

the "F" stands for Flash and is the re-programmable ones.

Some are ont time chips, and some have a jewel window for UV erasing.

check the data sheet for your chips.

But, this question will get great answers on the yahoo piclist 

Dave

I used mostly the UV-erasable PIC's when I got started with them. They 
have little windows.  I used a couple OTP devices once I got the bugs 
worked out in the EPROM versions. Now if I use a PIC it's a flash-memory 
device.  They're about the same cost or even cheaper than the EPROM 
devices.  Those little windows must be expensive!

I think all the AVR's use flash programming.

I asked this question on AVR-club but I don't think I ever got an answer 
there.  Has anyone used a mega16 with a 20 MHz crystal?  The specs rate it 
up to 16 MHz but the UART section in the data sheet lists 20 MHz as a 
possible frequency.

Zack

On Thu, 21 Oct 2004, Dave Mucha wrote:

> 
> The PIC chips come in 3 basic varieties.
> 
> the "F" stands for Flash and is the re-programmable ones.
> 
> Some are ont time chips, and some have a jewel window for UV erasing.
> 
> check the data sheet for your chips.
> 
> But, this question will get great answers on the yahoo piclist
> 
> Dave
>

Hi there,

I'm trying to set my uP ATmega8535 to external Xtal mode using the Configuration and Security Bit in PonyProg.

The moment I try to write to my up by clicking the "Write" button, then the error message "Device Missing or Unknown Device (-24)" pops up. After this, I cant read anything from my uP anymore. I cant even erase anything or write anything to it.

How can I set back the "Configuration and Security Bit" to gain access to my uP again? Can anyone help out??

N2

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I had a similar problem and found that I had to click
the "program" button (ctrl-p) rather than hit the
"write" icon + On another occasion I had the device go
missing and rebooting my pc did nothing - I needed to
totally power it off to recover.

Don't know if you've tried this but it worked for me.


ken

 --- Andrew Lim <normaxcite@yahoo.com> wrote: 
> 
> Hi there,
> 
>  
> 
> I'm trying to set my uP ATmega8535 to external Xtal
> mode using the Configuration and Security Bit in
> PonyProg.
> 
> The moment I try to write to my up by clicking the
> "Write" button, then the error message "Device
> Missing or Unknown Device (-24)" pops up. After
> this, I cant read anything from my uP anymore. I
> cant even erase anything or write anything to it.
> 
>  
> 
> How can I set back the "Configuration and Security
> Bit" to gain access to my uP again? Can anyone help
> out??
> 
>  
> 
>  
> 
> N2
> 
> 		
> ---------------------------------
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> vote.yahoo.com - Register online to vote today! 


	
	
		
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--- In AVR-Chat@yahoogroups.com, Andrew Lim <normaxcite@y...> wrote:

> The moment I try to write ...
> the error message "Device Missing
> or Unknown Device (-24)" pops up ...

Is it possible that this is the classic misconfigured oscillator 
problem? Do you actually have your external crystal wired up and 
checked out? ISP needs the MCU clock to be running in order to work. 
If you change the oscillator settings with ISP and the new mode does 
not come up then the ISP interface will go dead and you're hosed 
until you get the new oscillator mode working.

Interestingly, if you use a JTAG interface you do not have this 
problem because this interface does not require the MCU clock. You 
can get in and repair misconfigured fuses, erase everything, etc. 
without worry. If you can switch to the, say, ATmega16, which has a 
JTAG interface, you might be happier. You also get on-chip debug, 
which is a huge boon. You don't have to pay $300 for a JTAG ICE these 
days. You can get "clones" for $50 or less. Please consider my AVR 
ICE-Cube, see http://www.ecrostech.com.

Graham.

Hi Graham,
  I'll consider using it when I'm switching to Atmega16. But I need to get my Atmega8535 running. Thanks a lot dude !  :)
 
 
N2

Graham Davies <YahooGroups@ecrostech.com> wrote:

--- In AVR-Chat@yahoogroups.com, Andrew Lim <normaxcite@y...> wrote:

> The moment I try to write ...
> the error message "Device Missing
> or Unknown Device (-24)" pops up ...

Is it possible that this is the classic misconfigured oscillator 
problem? Do you actually have your external crystal wired up and 
checked out? ISP needs the MCU clock to be running in order to work. 
If you change the oscillator settings with ISP and the new mode does 
not come up then the ISP interface will go dead and you're hosed 
until you get the new oscillator mode working.

Interestingly, if you use a JTAG interface you do not have this 
problem because this interface does not require the MCU clock. You 
can get in and repair misconfigured fuses, erase everything, etc. 
without worry. If you can switch to the, say, ATmega16, which has a 
JTAG interface, you might be happier. You also get on-chip debug, 
which is a huge boon. You don't have to pay $300 for a JTAG ICE these 
days. You can get "clones" for $50 or less. Please consider my AVR 
ICE-Cube, see http://www.ecrostech.com.

Graham.





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