dev:nab:v2:jtag_access
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dev:nab:v2:jtag_access [2015/11/12 12:51] – [ Pacth and compile] redox | dev:nab:v2:jtag_access [2015/11/12 13:38] (current) – removed redox | ||
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- | # JTAG access | ||
- | ## Overview | ||
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- | As detailed on the Schematic (released in the FCC documents), the Nabaztag: | ||
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- | ## Hardware | ||
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- | ### JTAG probe: BusBlaster | ||
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- | {{: | ||
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- | On of the best features of the BusBlaster is you can reconfigure the CPLD to emulate any FT2232 JTAG probe. I think it comes pre-programmed with a JTAGkey buffer logic, which should work fine for this application. | ||
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- | _Note_: My BusBlaster (a v4 !) uses a KT-link buffer logic, because I needed the SWD capabilities for another application. If the following steps don't work, try to reprogram the CPLD with a KT-link buffer and try again ! | ||
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- | You also need some jumper wires (also called _Dupont wire_ sometimes) F/F to connect the BusBlaster to the Nabaztag | ||
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- | ### Nabaztag: | ||
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- | Well, of course you need a Nabaztag: | ||
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- | Grab a small flat screwdriver and remove the four screws on the base. You can also use a triangle screwdriver if you happen to have one, I don't. | ||
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- | And this is about it. the JTAG header is on the top left corner of the board. | ||
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- | Pinout is the following (top to bottom): | ||
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- | ^ Nabaztag Pin ^ Function ^ BusBlaster pin ^ | ||
- | | 1 | ||
- | | 2 | ||
- | | 3 | ||
- | | 4 | ||
- | | 5 | ||
- | | 6 | ||
- | | 7 | ||
- | | 8 | ||
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- | ## Software: OpenOCD | ||
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- | ### Patch and compile OpenOCD | ||
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- | ### Usage | ||
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- | ## Pictures | ||
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- | {{.: | ||
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- | ## Links |
/home/share/www/redox.ws/wiki/data/attic/dev/nab/v2/jtag_access.1447332672.txt.gz · Last modified: 2023/11/24 21:55 (external edit)