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| 02:56.54 | joe_bleau | jbevren: what debugger are you going to attack the Pixter with? |
| 03:01.50 | jbevren | ocd commander or h-jtag |
| 03:01.52 | jbevren | whichever works heh |
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| 03:24.49 | jbevren | hm |
| 03:24.52 | jbevren | so I have to ground test1 and test2 |
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| 03:46.12 | jbevren | man |
| 03:46.23 | jbevren | you have no idea how glad I am that I got a temp controlled iron :) |
| 03:58.52 | jbevren | ocd commander needs to restart to install. gak. |
| 04:06.33 | jbevren | wtf |
| 04:06.37 | jbevren | cable disconnected? |
| 04:06.42 | jbevren | its right there |
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| 04:11.20 | jbevren | right |
| 04:11.36 | jbevren | this vcc pad drops from 3.3v to around 100mv after 2 secs while in debug mode |
| 04:12.32 | joe_bleau | Not good. |
| 04:12.57 | joe_bleau | Didya do the cable detect jumper? |
| 04:14.32 | joe_bleau | (pin 8 to pin 15 at the parallel port) |
| 04:15.48 | jbevren | that's not in the schematic from sf.net |
| 04:16.47 | joe_bleau | http://www.sparkfun.com/cgi-bin/phpbb/viewtopic.php?t=558&start=30& |
| 04:19.17 | jbevren | it's still not helping that the pixter is dropping vcc on me :) |
| 04:25.43 | jbevren | yay next error: cannot enter debug mode |
| 04:25.46 | jbevren | it's a start I guess |
| 04:26.44 | jbevren | an right back to cable disconnected |
| 04:26.45 | jbevren | this isbs |
| 04:30.11 | joe_bleau | Well, you could have bought a development kit...it would be documented and probably work out of the box. |
| 04:30.18 | joe_bleau | But what's the fun in that? |
| 04:30.32 | jbevren | all OCD does is freeze the pixter and say it cant enter debug mode |
| 04:30.38 | joe_bleau | Hmm. |
| 04:30.51 | joe_bleau | Double check schematic and cable? |
| 04:30.57 | joe_bleau | Got any other ARM stuff? |
| 04:31.14 | joe_bleau | Try clock rate of 5 or even 7, 8, just to eliminate SI issues |
| 04:31.22 | joe_bleau | (1=fast, 8=slow) |
| 04:33.33 | jbevren | now it claims thins are ok but I highly doubt the pc is at 0x2 |
| 04:36.45 | jbevren | If I start up in ICE debug, I get cable disconnected |
| 04:36.53 | jbevren | if I dont, nothin works anyway |
| 04:43.10 | jbevren | thsi thing isnt horribly useful.. |
| 04:43.11 | jbevren | heh |
| 04:43.15 | jbevren | how do I dump a range of memory |
| 04:43.25 | jbevren | the regs arent showing but there appears to be data in mem |
| 04:44.18 | jbevren | cable disconnected |
| 04:44.20 | jbevren | grrr |
| 04:44.39 | jbevren | I give up. |
| 04:47.30 | jbevren | are olimex running sparkfun? |
| 04:47.32 | jbevren | I see their name a lot |
| 04:52.01 | joe_bleau | got endian set correctly? |
| 04:52.10 | joe_bleau | "endian little" or "endian big" |
| 04:52.12 | jbevren | ocd eosnt find it on its own? |
| 04:52.21 | joe_bleau | How would it know? |
| 04:52.51 | jbevren | not that it matters |
| 04:52.57 | jbevren | the pixter is crashed by time I can select an endianness |
| 04:53.03 | jbevren | and the cable goes 'disconnected' |
| 04:53.18 | joe_bleau | to display memory, "word 0x0 0x100" dumps 0x100 32 bit words, starting at 0 |
| 04:53.29 | joe_bleau | half dumps 16 bits at a whack, byte is 8 |
| 04:53.38 | joe_bleau | I think there's also an "ascii" to dump text |
| 04:54.36 | joe_bleau | Almost sounds as though your cable is putting the device in reset |
| 04:54.45 | jbevren | reset's not even hooked up |
| 04:54.49 | joe_bleau | What's the crystal freq |
| 04:55.21 | jbevren | of...? |
| 04:55.24 | jbevren | the pixter? |
| 04:55.28 | joe_bleau | The arm on the pixter |
| 04:55.43 | jbevren | 11.2896 |
| 04:55.44 | jbevren | mhz |
| 04:55.52 | joe_bleau | Your JTAG clock must be slower than the clock of the ARM (or ARM/2, or ARM/4...can't recall) |
| 04:56.00 | joe_bleau | OK, good. Some start at 32.768kHz until the PLL is set up. |
| 04:56.06 | jbevren | ah |
| 04:56.09 | jbevren | well |
| 04:56.15 | jbevren | explain set up |
| 04:56.24 | jbevren | because if I start the cpu in debug mode I get 'cable disconnected' from ocd |
| 04:56.36 | jbevren | (debug = test1->test2->gnd) |
| 04:57.13 | joe_bleau | I don't recall all the details, but if you're using a low frequency oscillator circuit, some CPUs default to |
| 04:57.21 | joe_bleau | not turning on the PLL right away |
| 04:57.37 | joe_bleau | On those designs, the JTAG clock must be pretty slow until you configure the PLL. |
| 04:57.56 | joe_bleau | That may be why some ARM JTAG implementations support the RTCK signal |
| 04:58.14 | joe_bleau | (I've been looking at openocd lately...) |
| 04:59.08 | jbevren | ending process |
| 05:02.17 | joe_bleau | Which pos are you shelving? |
| 05:02.38 | jbevren | the jtag and pixter project that currently consumes half my desk :P |
| 05:02.52 | joe_bleau | Oh, I was going to ask if you'd tried: http://developer.berlios.de/projects/openocd/ |
| 05:03.00 | joe_bleau | But since you're cleaning up, I guess it can wait... |
| 05:03.15 | joe_bleau | Your project sounds more fun than mine |
| 05:03.22 | jbevren | heh |
| 05:03.33 | jbevren | I just get incredibly frustrated |
| 05:03.47 | jbevren | cause every time I attempt something there's an impassable wall inthe path |
| 05:04.19 | joe_bleau | 3 steps forward, 2 steps back. |
| 05:04.21 | jbevren | later (not now), I'll put a scope on the tck output line |
| 05:04.26 | joe_bleau | Overall, you are making progress |
| 05:04.32 | jbevren | see if tck is relatively square |
| 05:04.37 | joe_bleau | And I think you're still ahead of that purple guy |
| 05:04.41 | jbevren | lol |
| 05:04.55 | jbevren | I know nothing about what I'm doing |
| 05:04.57 | jbevren | and nothing's working |
| 05:05.03 | jbevren | pff. :) |
| 05:05.18 | joe_bleau | Did the 8-15 jumper help? |
| 05:05.22 | jbevren | I'm only ahead of plague cause he doesnt have one :) |
| 05:05.23 | jbevren | yeah |
| 05:05.27 | jbevren | here's the steps: |
| 05:05.32 | jbevren | let pixter start normally, open ocd |
| 05:05.46 | jbevren | the host cpu usage hits 100% for 5 secs, and it comes back indicating no error |
| 05:05.54 | GPSFan_ | jbevren: what version of ocd commander, and does your jtager have resistors in series with the jtag lines? |
| 05:06.07 | jbevren | from there, nothin works, and re-intializing the cable tells me its not connected |
| 05:06.22 | jbevren | GPSFan_: since the jtag lines arent multiplexed I figured the resistors werent necessary |
| 05:06.29 | jbevren | that, and I'm lacking in the 50 ohm resistor dept |
| 05:06.43 | jbevren | I'm using a 74lvc244 |
| 05:06.49 | GPSFan_ | jbevren: not so, I built my wiggler without them and nothing worked till I added them. |
| 05:06.50 | joe_bleau | That was my next question |
| 05:06.59 | jbevren | hrm |
| 05:07.06 | joe_bleau | I don't recall the edge rate on the lcd family |
| 05:07.12 | jbevren | I'll have to dig to see if I can find some low-value resistors |
| 05:07.13 | GPSFan_ | I used 33 |
| 05:07.22 | jbevren | 3.3k or 33ohm |
| 05:07.29 | joe_bleau | Got any old video cards? |
| 05:07.31 | GPSFan_ | 33ohm |
| 05:07.32 | jbevren | k |
| 05:07.39 | jbevren | joe_bleau: just a matrox millenium 1 |
| 05:07.41 | GPSFan_ | or an old motherboard. |
| 05:07.41 | joe_bleau | They should have what, 75 ohm series termination resistors, right? |
| 05:07.51 | jbevren | joe_bleau: the sf.net schematic indicates 51 |
| 05:08.07 | joe_bleau | and your point? |
| 05:08.12 | jbevren | GPSFan_: I also noted in the forums that some 3.3v chips with 5v tolerant IO tend to misread noise on the line |
| 05:08.22 | jbevren | joe_bleau: the sf.net schematic indicates 51 ohms |
| 05:08.24 | jbevren | that's the point. |
| 05:08.34 | jbevren | you asked what they should have :) |
| 05:09.07 | joe_bleau | No, I meant that the series termination resistors on a video card should be 75 ohm. I think. |
| 05:09.13 | jbevren | ohhhh |
| 05:09.31 | GPSFan_ | I used a I used a 74VHC244. got some samples from ON Semi. |
| 05:09.31 | joe_bleau | The exact value on the wiggler isn't so critical, since you're not impedance matched anyway |
| 05:09.33 | jbevren | the line resistance should be either 27.5 ohm or 150 |
| 05:09.41 | jbevren | I honestly cant rememer if the drivers have the resistors in series or parallel |
| 05:09.51 | jbevren | I -do- know the display device is supposed to have a 75 ohm input impedance |
| 05:10.32 | joe_bleau | The olimex uses a HC244, I think. |
| 05:10.37 | joe_bleau | My DIY is a HC244 |
| 05:10.56 | jbevren | I figured I'd burn out the jtag circuit with a 5v output on the wiggler |
| 05:11.01 | joe_bleau | Lots of unknowns...the pixter, OCD, and the cable |
| 05:11.08 | GPSFan_ | jbevren: the latest version of ocd is 2.49 and I noticed that it reported less (none) cable disconnected errors than 2.41. |
| 05:11.38 | joe_bleau | Which is why you use the '244 to level shift to the same supply as the pixter |
| 05:11.48 | jbevren | GPSFan_: 2.4.9 |
| 05:11.53 | jbevren | for gameOS |
| 05:12.08 | GPSFan_ | jbevren: good, that's one less variable.. |
| 05:12.11 | jbevren | joe_bleau: thats why I'm using a lvc244 |
| 05:12.19 | jbevren | its a 3.3v chip with 5v tolerant IO :) |
| 05:12.39 | joe_bleau | You're powering it from the target's 3V rail, right? |
| 05:12.46 | jbevren | I chose it cause I was already ordering a small handful of them |
| 05:12.48 | jbevren | I was |
| 05:12.53 | jbevren | but the pixter drops 3.3v while in debug mode |
| 05:13.02 | jbevren | so I'm runnin it at 3.0v on a pair of AAs |
| 05:13.04 | GPSFan_ | jbevren: how long is the cable from the pc parallel prot to the wiggler? |
| 05:13.23 | jbevren | GPSFan_: IOMega zip scsi cable, 5 feet in length |
| 05:13.29 | joe_bleau | Hey, does the 3.3V drop if you disconnect the wiggler from the PC's parallel port? |
| 05:13.34 | jbevren | it leads to 2 feet of cat 5 to my wiggler board |
| 05:13.52 | jbevren | joe_bleau: Lets see. |
| 05:13.59 | GPSFan_ | jbevren: k, mine is onlt about 2' total. |
| 05:14.13 | jbevren | GPSFan_: I have no issues with the xilinx tools on this cable |
| 05:14.20 | jbevren | also, Ive run fast-narrow scsi over it without issues |
| 05:14.21 | joe_bleau | I run about 6 feet to the wiggler, and 12 inches to the target |
| 05:14.25 | jbevren | (the iomega cable) |
| 05:14.44 | jbevren | anyway |
| 05:15.35 | jbevren | yep |
| 05:15.42 | joe_bleau | Might be power management...the chip goes into reset, tri-states a pin, and the power supply shuts off |
| 05:15.44 | jbevren | wiggler connected, but not on parallel port |
| 05:16.04 | joe_bleau | One of my designs does the same thing. |
| 05:16.06 | jbevren | I'm using a 3.3v vdd pin that's used for one of the button inputs |
| 05:16.16 | joe_bleau | Matrix scan? |
| 05:16.27 | jbevren | naw, looks like discrete inputs |
| 05:16.28 | GPSFan_ | jbevren: you might find a better vcc on the jb. |
| 05:16.31 | jbevren | the 4way pad has 5 lines |
| 05:16.33 | jbevren | the a/b pad has 3 |
| 05:16.40 | jbevren | on the jb ? |
| 05:17.08 | joe_bleau | Lost me there too |
| 05:17.18 | jbevren | juicebox ? |
| 05:17.24 | GPSFan_ | jbevren: I meant pixter ;P |
| 05:17.26 | jbevren | lol |
| 05:17.36 | jbevren | anyway |
| 05:17.40 | GPSFan_ | sorry// |
| 05:17.41 | jbevren | I get a happy 3v from the battery |
| 05:18.01 | joe_bleau | Sorry, what happened with wiggler disconnected from the PC? |
| 05:18.05 | GPSFan_ | you got a .1uf on the 244's vcc? |
| 05:18.21 | jbevren | I have 870 due to convenience (there was one sitting here) |
| 05:18.48 | GPSFan_ | 870pf? |
| 05:18.56 | jbevren | this is one seriously decoupled chip |
| 05:18.57 | jbevren | uf |
| 05:19.03 | jbevren | you asked in units of uf :) |
| 05:19.19 | joe_bleau | Not as useful at 0.1 in this case |
| 05:19.19 | jbevren | it's a low-impedance cap for VRMs |
| 05:19.25 | jbevren | ..? |
| 05:19.47 | joe_bleau | low-impedance for a 'lytic, maybe not so low-impedance as a ceramic at high frequency |
| 05:19.53 | GPSFan_ | yeah but 870uf has crap for Z at hi freq. even the ones from vrm's. put a good ceramic .1uf right at the vcc pins. |
| 05:20.21 | jbevren | these caps keep a 65816 stable at 16mhz.. :X |
| 05:20.33 | joe_bleau | ok then |
| 05:20.40 | joe_bleau | Is the reset circuit correct? |
| 05:20.58 | joe_bleau | open collector output, some kind of resistor in series with the base |
| 05:21.05 | joe_bleau | NPN transistor? |
| 05:23.35 | jbevren | I dont have a reset circuit hooked up since I was plannin to use hjtag (which doesnt require a reset line)) |
| 05:25.01 | jbevren | anyway |
| 05:25.04 | jbevren | I'm geting brainfried |
| 05:25.14 | jbevren | I do appreciate your help but I need sleep |
| 05:25.33 | jbevren | I'll poke around in my basement to see what I can find for resistors and caps |
| 05:25.47 | jbevren | and not pointin' in's |
| 05:25.48 | jbevren | lol :) |
| 05:27.36 | jbevren | z's. |
| 05:27.38 | jbevren | joe, gps: thanks |
| 05:30.31 | GPSFan_ | jbevren: np, I think the resistors may be important.. night... |
| 05:33.10 | joe_bleau | Have fun! |
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| 14:25.47 | jbevren | plague |
| 14:36.43 | prpplague | ok ready to work, just cleaned my desk |
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| 14:36.53 | *** mode/#edev [+o GPSFan] by ChanServ |
| 14:37.00 | jbevren | §hehe |
| 14:37.08 | jbevren | prpplague: JTAG woes last night ;-) |
| 14:37.14 | prpplague | go at boat load of work today |
| 14:37.17 | jbevren | although gpsfan points out that the termination resistors are critical :) |
| 14:37.30 | jbevren | I'll stick some on tonight |
| 14:37.33 | GPSFan | mornin.. |
| 14:37.33 | prpplague | jbevren: fb driver and spi driver gotta get done by EOD friday |
| 14:37.43 | prpplague | GPSFan: morning |
| 14:37.47 | jbevren | fb driver for..? :) |
| 14:38.15 | prpplague | jbevren: i could tell you but.......then i'd have to kill you |
| 14:38.18 | jbevren | hehe |
| 14:38.21 | jbevren | new project eh? |
| 14:38.24 | jbevren | get to work then |
| 14:38.25 | jbevren | :) |
| 14:38.29 | prpplague | yea new handheld |
| 14:51.11 | prpplague | lordy |
| 14:51.18 | prpplague | don't how i'm gonna get all this done |
| 17:10.08 | jbevren | zzz |
| 17:12.03 | *** mode/#edev [+o prpplague] by ChanServ |
| 17:18.28 | prpplague | jbevren: still haven't got your jtag working? |
| 17:18.41 | jbevren | I have this thing, its called a job:) |
| 17:18.44 | jbevren | I think you know what they are lol |
| 17:18.53 | jbevren | naw, havent had time |
| 17:19.06 | prpplague | jbevren: i meant about what kind of problems you were having last night |
| 17:19.09 | jbevren | I'll poke at it after I dig around for some ~50ohm resistors :) |
| 17:19.18 | jbevren | prpplague: ocd commander is crashing the pixter |
| 17:19.20 | prpplague | jbevren: this is for the jb? |
| 17:19.24 | jbevren | after which it says the cable's not connected |
| 17:19.31 | prpplague | jbevren: eeewww |
| 17:19.39 | prpplague | jbevren: why are you using ocd? |
| 17:19.48 | jbevren | because the only box with a parallel port is a winbox |
| 17:20.02 | prpplague | that bites |
| 17:20.05 | jbevren | and h-jtag cant find anything on jtag |
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| 17:21.57 | prpplague | hasn't |
| 17:22.12 | prpplague | some reason i always leave the n't out |
| 17:31.17 | jbevren | I wouldnt have a blows box if the xilinx tools would have installed in linux before 3 hours of wondering why its installer was trying to write to the cd and dieing |
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| 18:35.18 | JoseJX | What voltage should I be running a CF card at? I've got an adaptor with a jumper for 3.3v and 5v, and a generic sandisk 128Mb card. I can't seem to find specs on sandisk's site. :p |
| 18:36.23 | JoseJX | I think 5v is fine, but I was just wondering... |
| 18:36.36 | jbevren | heh |
| 18:36.39 | jbevren | if it doesnt work at 3.3 |
| 18:36.40 | jbevren | use 5 |
| 18:36.41 | jbevren | :-D |
| 18:36.43 | JoseJX | :) |
| 18:36.48 | JoseJX | Easy enough |
| 18:37.00 | jbevren | better to try 3 first in case it cant handle 5 |
| 18:37.16 | jbevren | my experience with cf is pretty limited, but I havent seen one that requires 3.3 |
| 18:37.41 | jbevren | lol 12x 19" crt for $100 |
| 18:37.45 | jbevren | if only I had a use for that many |
| 18:38.00 | JoseJX | Yeah, that's what I thought too, but I figured that since it had the option, I might as well ask. :) |
| 18:51.05 | jbevren | ebay 5856683804 |
| 18:51.11 | jbevren | there's some oldskool charm :) |
| 18:54.59 | JoseJX | heh |
| 18:55.12 | JoseJX | I saw a lot of 22 G4 500's the other day. :) |
| 18:55.54 | JoseJX | 5871208623 |
| 18:55.59 | JoseJX | Looks like an invasion! |
| 19:22.47 | prpplague | yea that looks scsi |
| 19:22.54 | prpplague | but timriker would know for sure |
| 19:38.17 | jbevren | everything points to scsi |
| 19:38.18 | jbevren | apparently the enclosure has two full-size 1G drives |
| 19:38.18 | jbevren | scary :) |
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