I also stumbled across this which I hadn't realised was public
https://www.xmos.com/en/download/public ... -XTAG2.pdf
Debugging an xtag2 xith an xtag2
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Ross
- XCore Expert
- Posts: 966
- Joined: Thu Dec 10, 2009 9:20 pm
- Location: Bristol, UK
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segher
- XCore Expert
- Posts: 844
- Joined: Sun Jul 11, 2010 1:31 am
To make a "blank" XTAG2, one way is to replace the L1 chip
by one that doesn't have its OTP programmed. While you have
your soldering iron out, also change the boot mode and/or add
an SPI rom (if you plan to boot it standalone) and/or add some
UART wires (if you like to debug that way).
I can confirm this works :-)
For light-weight debugging, you can just run your program via
the USB loader (as in the doc Ross just posted the link to),
and connect the debugger. Less convenient in various ways,
but cheaper and easier.
by one that doesn't have its OTP programmed. While you have
your soldering iron out, also change the boot mode and/or add
an SPI rom (if you plan to boot it standalone) and/or add some
UART wires (if you like to debug that way).
I can confirm this works :-)
For light-weight debugging, you can just run your program via
the USB loader (as in the doc Ross just posted the link to),
and connect the debugger. Less convenient in various ways,
but cheaper and easier.