AVR-Chat

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.ralphhilton.org
C-Meter: http://www.cmeter.org
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