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Using a Raspberry Pi as a JTAG Debugger to Recover a Bricked Zipit

I got my mitts on a Raspberry Pi Zero just after Christmas in a trade agreement (thanks slug). It’s been sitting here staring me in the face waiting for a job to do. About the same time the zero came, deeice was plotting to try out a modified u-boot on the zipit that squeezes a little more space out of the internal flash. Unfortunately, we haven’t got it working as intended yet. In the process deeice managed to brick one zipit by mistake and I bricked one after compiling some probably incomplete source code. Someone posted a link about using the Raspberry Pi as a JTAG debugger and since deeice got a Raspberry Pi for Christmas I figured this is a good chance to force him into getting a soldering iron and using it. :-D

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Posted by on Fri, 8 Jan 2016
tags: zipit, raspi, jtag.