AVR-Chat

I know that SPIEN default value is 0 to allow Low-voltage Serial Programming
Mode is ENABLED but AVRStudio  shows it with a ? inside a gray box. 

Is because AVRISP can’t read it?

 

 

Ricardo Callejo

SURbyte

 

  _____  

De: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] En nombre de
Ralph Hilton
Enviado el: Miércoles, 21 de Junio de 2006 09:34 a.m.
Para: AVR-Chat@yahoogroups.com
Asunto: Re: [AVR-Chat] Setting ISP frecuency from Codevision

 

On Wed, 21 Jun 2006 09:23:02 -0300 you wrote:

>How can i set to one specific value the ISP frecuency using Codevision and
STK500? 
>STK500 firmware was updated with AVRStudio 4.12.
>If i check Execute User's Program a Command Button called Programm Setting
is enabled.
>This button has three options : 
> Program Directory and Filename -> i set with stk500.exe path
> Command Line parameters -> i set with -I460.80khz but doesn't work.
STK500.exe help says that -I frequency is the way to modify this parameter.
I probe it with or without space.
> Working directory -> nothing.
>This was my course of action. But it's wrong.
>
>I am programming the flash with AVRSTUDIO, changing the ISP frecuency to
1/4 Crystal (3.68Mhz) each time i need to reprogram the MCU. 
>When i set it to 460.8Khz, the systems works, and i can program the flash.
>I read many threads about this problem. I understand that the main problem
can be the SPIEN fuse and that you must change it to Internal ISP clock. Of
course, I did it but Codevisión still can't program the flash. 

The SPIEN fuse must be left in its default programmed state or ISP
programming is disabled.

--
Ralph Hilton
http://www.ralphhil <http://www.ralphhilton.org> ton.org
C-Meter: http://www.cmeter. <http://www.cmeter.org> org
FZAOINT http://www.fzaoint. <http://www.fzaoint.net> net

 



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