| 07:22.50 | *** join/#openjtag pleemans (n=toi@116.54-246-81.adsl-static.isp.belgacom.be) |
| 08:20.05 | keesj | noz: what kind of setup do you have |
| 14:18.10 | *** join/#openjtag prpplague (n=dave@mail.americanmicrosystems.com) |
| 14:48.24 | *** join/#openjtag prpplague (n=dave@mail.americanmicrosystems.com) |
| 18:52.14 | *** join/#openjtag pleemans (n=toi@d54C2AAB7.access.telenet.be) |
| 19:16.43 | *** join/#openjtag drath (n=vmaster@p5B07C99D.dip.t-dialin.net) |
| 19:17.18 | prpplague | drath: greetings earthling |
| 19:19.20 | drath | hey prpplague |
| 19:20.07 | johnrw | Hi... anyone here have any experience using USBprog on xscale? Not for me, but my buddy. |
| 19:22.18 | drath | USBprog support probably isn't in very good shape |
| 19:22.50 | drath | it's not very widely used, and it's pretty slow |
| 19:23.11 | drath | there were efforts to improve usbprog support, but that didn't get very far |
| 19:24.06 | johnrw | oh... so I should buy my buddy an Olimex |
| 19:24.50 | johnrw | I am sorry to hear that... |
| 19:25.20 | drath | well, the basic functions should of course work |
| 19:25.24 | drath | but it's going to be sloooow |
| 19:26.03 | johnrw | what kind of jtag_speed should I start him at? |
| 19:26.19 | johnrw | I have been telling him it is very slow... |
| 19:28.06 | drath | well, the first thing is a 5V -> 3.3V levelshifter |
| 19:28.10 | drath | does he use one? |
| 19:28.19 | johnrw | yes... |
| 19:29.04 | johnrw | and he applied the last firmware that compensates for some lines being swapped in that level shifter... |
| 19:29.40 | drath | jtag_speed is usually a divisior, so a higher value gets you a slower jtag clock |
| 19:30.10 | johnrw | I had him try 30 last night... |
| 19:30.50 | johnrw | but I noticed in the design guide for ixp that ICE mode requires TRST to be held high...? |
| 19:31.11 | drath | http://forum.embedded-projects.net/viewtopic.php?id=581 |
| 19:31.13 | drath | is this him? |
| 19:31.35 | johnrw | yes |
| 19:31.51 | johnrw | no answer... :( |
| 19:33.02 | johnrw | he was here yesterday... |
| 19:34.18 | drath | jtag communication seems to be ok, the idcode is fine |
| 19:34.56 | drath | xscale debugging requires tight control of the reset lines - maybe he's missing something there |
| 19:36.13 | johnrw | I was thinking it might be his level shifter not having enough juice? |
| 19:36.30 | noz | keesj: Linux with openocd -> USBprog hardware (programmed with openocd firmware) -> 5V-3.3V levelshifter -> Xscale IXP422 processor on USR8200 board |
| 19:36.45 | noz | Hi all - looks like I'm late in to the conversation! |
| 19:37.17 | johnrw | I was pleading on your behalf... :) |
| 19:37.32 | drath | noz: you could check the levels on the reset lines - they should idle at 3.3V most of the time, and go low for a few miliseconds upon openocd start |
| 19:38.22 | noz | OK. Will do. |
| 19:38.38 | johnrw | Gotta get yours running so we can get that device unbricked now! |
| 19:38.53 | noz | Just off to get my mulitmeter.... |
| 19:42.21 | johnrw | noz, did you get my notes on the sequence to use... ie... power off that device... hookup the jtag... then power on the device... |
| 19:42.55 | johnrw | I learned the hard way... |
| 19:43.17 | johnrw | drath: am i right on that? |
| 19:44.02 | drath | johnrw: i've heard stories about people ruining their targets, but personally that never happened to me |
| 19:44.33 | drath | sorry guys, gotta run |
| 19:44.36 | johnrw | well my target was in a kind of stuck mode... |
| 19:44.58 | johnrw | drath: take care |
| 19:45.06 | drath | noz: you can start the openocd without a target, to take direct control over the jtag lines |
| 19:45.22 | drath | noz: that allows you to verify the reset signal levels without caring about timing |
| 19:45.29 | drath | bye |
| 19:46.46 | johnrw | shucks... |
| 19:47.16 | johnrw | And I got all dressed up for nothing... :) |