Re: [avr-chat] sample code for ATmega48? ... and a debugWIRE question

[Graham Davies]

Joe Strout wrote:
> .... Anybody have something like that?

Well, it just so happens that I'm working on a new product with an ATmega168 
and I think it's quite likely that the same code will run on your ATmega48. 
So, here is what you asked for, source and hex.  (Warning - most people on 
this list will regret looking at the attachments as they will be too 
boring.)

Now I have a question ...

In order to run this code in the debugger (using AVR Studio with WinAVR and 
an AVR Dragon), I had to let AVR Studio use debugWIRE to set the DWEN fuse. 
Now that the DWEN fuse is set, I can't use ISP.  The AVR Dragon Help 
explains this, and further says "Use debugWIRE or High Voltage programming 
to disable the DWEN fuse."  OK, I can re-configure for High Voltage, but 
that's quite a chore and won't be possible in many people's target systems. 
But, I can't figure out how to use debugWIRE to disable the DWEN fuse.  Can 
anyone point me in the right direction?

Graham.

Flash168.c
Description: Binary data

Flash168.hex
Description: Binary data