[ECOS] Restoring boot/ecos on a AEB-1 using JTAG/Wiggler?

[Carlos Sobrinho]

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On Thursday, 28 August 2003 08:33, you wrote: 
> I used the free software from macgraigor. With it, I could not modify the 32 
> bit registers in the atmel ARM processor. The software writes 4 bytes
> instead of 1 longword, and this is not possible:every byte was repeated 4 
> times in the register. 0x10000005 became 0x05050505 (or was it 0x10101010?). 
I'll try this later on next week because I found out that my homemade wiggler 
cable is not very stable and I'm on exams right now. 

I think I must have ground between the signals to remove some of the noise. 
Besides all, I manage to write a char and a int to the peripherals memory 
using the remote gdb from pppc_arm_* so maybe I'll try to write the words 
using a simple script run through (arm-elf-gdb -x file) with some (x), (p) 
and some printfs and then try to load a application in SRAM, run it to blink 
my leds and then program my flash with a 16K bin for the boot. Since I have 
256 KB of ram this shouldn't be a problem. All I need is time and that's 
something I don't have until 12/SET.

> Modify it to use the right memory locations. Then load it in the internal 
> memory and run it. Then load and run your own software from ram. Try a 
> simple led flashing application without ecos first to see if it works.  
> Eric.  

As soon as I build a new wiggler I'll keep you (Eric and the list) posted with 
news and questions.

With Best Regards
Carlos Sobrinho

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