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| 13:50.05 | goug | Hello there |
| 14:15.19 | drath | Hi goug |
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| 18:43.54 | goug | hi there |
| 18:44.01 | goug | Sory drath |
| 18:44.16 | goug | was droning in screen mode while cycling home (15 miles) |
| 18:46.08 | drath | heh, no problem |
| 18:46.23 | drath | anything you wanted to ask/say/...? |
| 18:55.02 | goug | well |
| 18:55.10 | goug | I just crashed a RV042 today |
| 18:55.13 | goug | I mean |
| 18:55.15 | goug | badly crashed |
| 18:55.30 | goug | most probably erased the booloader from flash |
| 18:55.47 | goug | So I guess JTAG is my only chace to recover from this |
| 18:56.16 | drath | linksys router? |
| 18:56.51 | drath | do you know a site that has some technical details on this router? |
| 18:57.02 | goug | well |
| 18:57.06 | goug | really hard to fing |
| 18:57.08 | goug | find |
| 18:57.09 | goug | sorry |
| 18:57.18 | goug | in the end, the most complet I ever found |
| 18:57.46 | goug | is seattlewireless |
| 18:58.06 | goug | when it comes that RV042 & WRT54GL uses very similar hardware |
| 18:58.10 | goug | let me fetch the link |
| 18:58.30 | goug | http://www.seattlewireless.net/LinksysWrv54g |
| 18:58.49 | goug | looks like HRI collected interresting stuff as well |
| 18:59.48 | goug | http://hri.sourceforge.net/ |
| 19:01.35 | drath | uhm - is it similar to the wr_t_54g, or to the wr_v_54g? |
| 19:01.46 | drath | couldn't find a reference to rv042 on seattlewireless |
| 19:02.06 | drath | those two are quite different - one uses a mips core, the other has an intel xscale core |
| 19:03.43 | goug | that's th one using ixp425 |
| 19:05.01 | drath | is there a JTAG port on the board? or do you know on which testpads the jtag signals are? |
| 19:09.07 | drath | found on post on linksysinfo.org that says J2 might be JTAG |
| 19:19.34 | goug | well JP2 on my RV042 looks pretty much like the one on wr_v_54g |
| 19:21.05 | drath | ok, you should be able to access your flash using a Wiggler and the openwine jtag tools |
| 19:21.05 | drath | s/openwine/openwince/ |
| 19:49.58 | goug | well |
| 19:50.09 | goug | thanks for the tip! |
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| 19:52.11 | goug | any convenient way I could check the pinout? |
| 19:52.21 | goug | befroehad? |
| 19:52.25 | goug | beforehand |
| 20:05.15 | drath | not really |
| 20:05.30 | drath | but if it's a 2x10 connector chances are it's the JTAG port |
| 20:06.03 | drath | you could measure the reset lines against GND, they should be 3.3V |
| 20:26.24 | goug | oki |
| 20:26.30 | goug | that's quite easy |
| 20:26.40 | goug | gonnapick hardware tomorrow at retailer |
| 20:27.37 | goug | I mean connector |
| 20:27.49 | goug | I just don't know which wiggler to pick |
| 20:28.06 | goug | on the seattlewireless site, there is a really simple one |
| 20:28.24 | goug | juste a coupla resistors and a parallel port |
| 20:28.50 | goug | dya think it would be suitable? |
| 20:30.38 | drath | you should use a buffered interface |
| 20:31.31 | goug | so you mean the other drawing |
| 20:31.41 | goug | with a chip and som circuitry |
| 20:31.55 | goug | not too sure my local retailer has it on the shelf |
| 20:32.13 | goug | i'll see |
| 20:33.06 | goug | finally if I ever come to the point JTAG works, I just don't know how to boot linux on this unit... |
| 20:33.19 | goug | I may need a bootloader? |
| 20:33.45 | goug | many clues indeed for such a newbie as me ;-) |
| 20:33.47 | prpplague | goug: usually unless you are really interested in building a jtag wiggler yourself, its easier to jsut purchase a off-the-shelf item |
| 20:34.38 | drath | well, you'll need a bootloader, a linux kernel image, and a root filesystem |
| 20:34.39 | goug | thanks prpplague, I'll check what my local guy has, hoping he has anything supported with KNX |
| 20:34.41 | goug | LNX |
| 20:34.46 | prpplague | goug: http://www.elinux.org/JTAG |
| 20:35.06 | goug | <... browsing...> |
| 20:36.05 | AchiestDragon | http://www.achiestdragon.org/index.php?title=Jtag_wiggler&oldid=403 |
| 20:36.25 | goug | Funny thing is that I actuammy live in the middle of the French Sylicon Vallye |
| 20:36.45 | goug | with the highest conectration in the country of people knowing such things |
| 20:36.52 | goug | but I don't have any link to them |
| 20:37.03 | goug | Hopefully you guys can help |
| 20:37.10 | goug | I really appreciate this |
| 20:37.14 | goug | manhy thanks |
| 20:40.00 | AchiestDragon | it worries me that a lot of the jtag wigglers that are based on 74hc244 buffers that they only work at 5v jtag voltages , ok for some of hte microcontrolers , but a lot of the xilinx fpga's use 2.5v jtag voltages |
| 20:42.44 | prpplague | AchiestDragon: yea |
| 20:43.40 | goug | your auto-adapatative one looks fine from this prospective |
| 20:44.25 | prpplague | AchiestDragon: we use the ft2232 now days, but we generally have it fixed for 3.3v since all of our projects are 3.3v based |
| 20:45.01 | AchiestDragon | yes it will just need the pinouts for the dio bits correctly matched to what lines on a lpt port the software uses |
| 20:45.19 | AchiestDragon | it may need some of the signals inverted in software also |
| 20:46.17 | AchiestDragon | its also shown with a 14 pin arm jtag format output , but easaly changed to other formats |