JTAG on FreeBSD developer's notebook

Flyswatter JTAG and AVR32

Mon, 09 Aug 2010 04:21:00 +0000

Today I soldered AVR32 adapter for Flyswatter JTAG. Actually it’s very simple task - just connect respective pins and make common ground wire. No capacitors, resistors or MOSFETs. Idea was to make it nice and neat but having bought wrong breadboard and soldered first headers in a wrong place I just let it flow and here it is:

From aesthetics point of view suck, but it also works and it’s everything I need:

Minor OpenOCD fixes

Tue, 06 Jul 2010 03:00:00 +0000

Back from the land of GUI software. I have bought one more Flyswatter JTAG recently and now have two boards connected to my home box. Unfortunately both Flyswatters got the same USB serial number so stock openocd opens only the first device it stumbles upon. Here is small patch that adds ft2232_index command to OpenOCD FTDI driver that allows to point at specific device to open. Works only with libftdi. In the same directory you can find my configs for AR71XX-based RouterStation Pro and Portwell’s CAM-0010 device based on Octeon CN3010

OS X: Flyswatter, JTAG & RS232

Mon, 23 Nov 2009 19:33:00 +0000

Since I lent my RS232/USB adapter to a friend it was nice opportunity to experiment with Flyswatter on-board RS232 port. OS X does not support FTDI devices out of the box, but it’s not a problem for OpenOCD, which uses generic interface to communicate JTAG board. Things get a little bit more complicated when you’re trying to get on-board RS232 port working.

I started with installing stock drivers from FTDI site. Current version supports Snow Leopard. With these drivers installed system started to detect two COM ports but JTAG part stopped to work as OpenOCD failed to claim USB device.

WIP: Ubiquity's router station

Thu, 26 Feb 2009 21:30:00 +0000

So it has been a month since last post about this device and I think it’s time to announce current state of affairs.

At the moment further progress was blocked with something that looks like memory corruption. It’s hard to trace with ktr(4) and printf(9) so I ordered Flyswatter JTAG adapter and MIPS14 adapter from Tin Can Tools. I was warned that Flyswatter/MIPS combination is not supported by OpenOCD but I’d better spend some time making it work then tracing obscure memory corruptions in the wild.