forum.excito.org

Hi Excito guys,

I'm thinking about do some testing with a new kernel on my bubba, but before i begin i want to make sure i have a way of fixing it in case i mess up and brick it.

Do you have the schematics for a JTAG cable that'll work with Bubba?

I've looked at different types, both buffered and unbuffered but am unsure which type to persue.

Any pointers would be nice

/Bjorn

Hi,

We have been using TRACE32 from http://www.lauterbach.com for lowlevel development.
But this is a fairly exensive tool.

However the "wiggler" _should_ work, but we have not tested it.

Checkout this tutorial http://www2.amontec.com/sdk4arm/ext/jly ... 061124.pdf regarding setting up free tools to develop on arm based systems.

Hi Björn,

Another way to reprogram the flash without a running system is to use the AT91's built in boot-loader. This however requires special software to run at your workstation, but requires nothing more in hardware than a slightly modified USB cable. We can release this software and a short howto if this would be of interest?

Hi again,

Yes, I am very interested in the AT91-bootloader stuff with modified USB-cable. If you were to supply some info on that topic i would be very happy, and i'll sure post my results on this forum.

Although i think i'll check out the JTAG as well. This is a great possibility to learn Thanks for the tips about the "wiggler".

Best Regards
Bjorn

johannes wrote:Hi Björn,

Another way to reprogram the flash without a running system is to use the AT91's built in boot-loader. This however requires special software to run at your workstation, but requires nothing more in hardware than a slightly modified USB cable. We can release this software and a short howto if this would be of interest?

Yes please... I'd also be very interested in this.

Colin

Ok, sorry for the delay, but now it's done. See this howto for details.

johannes wrote:Ok, sorry for the delay, but now it's done. See this howto for details.

Many thanks, I'll take a look...