**** BEGIN LOGGING AT Mon Mar 06 10:59:56 2006
Mar 06 17:12:35 <[g2]> vmaster ping
Mar 06 17:45:03 <vmaster> [g2] [g2-lap]: pong
Mar 06 18:54:41 <[g2-lap]> vmaster hey
Mar 06 18:54:59 <[g2-lap]> feel like talking about openOCD ?
Mar 06 18:55:47 <[g2-lap]> p2-mate howdy
Mar 06 19:02:29 <vmaster> [g2-lap]: yeah, sure, you got 20 minutes
Mar 06 19:03:28 <[g2]> vm sure
Mar 06 19:03:34 <[g2]> one sec
Mar 06 19:03:54 <[g2-lap]> vmaster Ok that's better
Mar 06 19:05:17 <[g2-lap]> vmaster so we're jamming on the 93xx stuff
Mar 06 19:05:55 <[g2-lap]> and I'm looking at some stuff on sparkfun and there's mention of the openOCD stuff
Mar 06 19:06:10 <[g2-lap]> and I'd already been thinking about JTAG stuff a litle
Mar 06 19:06:13 <vmaster> oh, where?
Mar 06 19:06:20 <vmaster> i mean at sparkfun's site
Mar 06 19:06:29 <[g2-lap]> in the forum
Mar 06 19:06:35 <[g2-lap]> you and the olimex guy
Mar 06 19:06:43 <vmaster> ah, yeah
Mar 06 19:07:30 <[g2-lap]> so we've got debian and an OE rootfs running on the glomation and ts72xx
Mar 06 19:07:34 <[g2-lap]> wb
Mar 06 19:08:25 <[g2-lap]> So I was thinking hel., we could just have a custom app that runs on the 72xx or the 9302 version from Glomation
Mar 06 19:08:41 <[g2-lap]> I think it'd fit in 4MB or could be loaded from the net
Mar 06 19:09:16 <[g2-lap]> we'd only need 256K for RedBoot to load the app from the net, but I thin 4MB is the smallest NOR flash these days
Mar 06 19:10:21 <vmaster> yeah, at least you wouldn't save a lot if you used less NOR
Mar 06 19:10:30 <[g2-lap]> so for <$100 probably <$80 we'd have a 200Mhz ARM with 8+ DIOs, Ethernet, USB, serial that could run openOCD.
Mar 06 19:10:43 <[g2-lap]> (or any other JTAG app too)
Mar 06 19:11:11 <[g2-lap]> this won't be as cool or as fast as the geep
Mar 06 19:11:40 <[g2-lap]> but 95% of the stuff would probably xfer right over to that platform when it's ready
Mar 06 19:11:54 <vmaster> mhh, have you already done any testing how fast bitbanging could go?
Mar 06 19:12:22 <[g2-lap]> vmaster not yet, but it should be pretty easy to do
Mar 06 19:13:01 <[g2-lap]> I think the TS already has a PC104 connector on it
Mar 06 19:13:41 <[g2-lap]> so if the DIOs are too slow would might be able to make a simple board 
Mar 06 19:14:09 <[g2-lap]> or maybe just get a very geep that's got the processor and fpga
Mar 06 19:14:17 <[g2-lap]> s/very/very early/
Mar 06 19:14:19 <purl> [g2-lap] meant: or maybe just get a very early geep that's got the processor and fpga
Mar 06 19:15:59 <[g2-lap]> vmaster give it a little though
Mar 06 19:16:01 <[g2-lap]> vmaster give it a little thought
Mar 06 19:16:08 <vmaster> yeah, sure, i like the idea
Mar 06 19:16:21 <[g2-lap]> how big is openOCD
Mar 06 19:16:40 <vmaster> well, it isn't optimized at all - currently it requires quite a lot of ram, but that can be tweaked easily
Mar 06 19:16:46 <[g2-lap]> is there a cmdline interface ?
Mar 06 19:16:55 <vmaster> a telnet interface and a gdb server
Mar 06 19:17:12 <[g2-lap]> what's "a lot of ram" ?
Mar 06 19:17:34 <vmaster> well, several mb during runtime
Mar 06 19:17:53 <[g2-lap]> these boards come with 32MB RAM
Mar 06 19:17:55 <vmaster> the binary is <500kb
Mar 06 19:18:03 <vmaster> with debug info and not stripped
Mar 06 19:18:19 <vmaster> stripped it's <200kb
Mar 06 19:18:29 <[g2-lap]> 64MB probably isn't a big deal
Mar 06 19:18:43 <vmaster> even 32mb should be enough
Mar 06 19:18:47 <vmaster> more than enough+
Mar 06 19:19:26 <[g2-lap]> right I was thinkging we could reserve a few Meg for JTAG buffers
Mar 06 19:19:41 <[g2-lap]> then we'd just copy the images into the high buffers
Mar 06 19:19:55 <[g2-lap]> past the area Linux is using
Mar 06 19:20:37 <[g2-lap]> I'm also wondering how realtime (or how processor locked) we can go
Mar 06 19:21:11 <[g2-lap]> I think we could disable all interrupts except for maybe a timer
Mar 06 19:21:21 <[g2-lap]> and get in a _tight_ loop
Mar 06 19:22:21 * [g2-lap] will have to grap bewoolie's JTAG stuff too
Mar 06 19:22:57 <[g2-lap]> vmaster I'll ping you in here from time-to-time
Mar 06 19:23:16 <[g2-lap]> right now I'll see how fast the DIOs are with the TS and Glomation boards
Mar 06 19:23:21 <[g2-lap]> based on a loop
Mar 06 19:23:47 <[g2-lap]> running from jffs2 
Mar 06 19:23:58 <[g2-lap]> no ethernet on
Mar 06 19:24:00 <[g2-lap]> no usb
Mar 06 19:24:10 <[g2-lap]> I think just the timer and serial
Mar 06 19:24:29 <[g2-lap]> and serial won't generate any ints cause I won't be typing :)
Mar 06 19:24:40 <vmaster> mhh, is there a real datasheet or user manual for the ep93xx?
Mar 06 19:24:51 <[g2-lap]> sure many
Mar 06 19:25:04 <[g2-lap]> are you aware of the wiki we've got going ?
Mar 06 19:25:24 <vmaster> no
Mar 06 19:25:28 <[g2-lap]> http://ep93xx.giantshoulderinc.com:8001/ep93xx
Mar 06 19:25:47 <[g2-lap]> Click on the Cirrus link and go to the 9302 versus the 9312
Mar 06 19:26:28 <[g2-lap]> The CirrusEp9312Info link
Mar 06 19:26:55 <[g2-lap]> And Three-Cheers for lennert !!
Mar 06 19:27:02 <[g2-lap]> dwery too!
Mar 06 19:31:04 <dwery> ty! :)
Mar 06 19:31:23 <vmaster> hmm... ep's ssp might work for JTAG
Mar 06 19:31:38 <vmaster> that would allow really fast jtagging
Mar 06 19:32:15 <vmaster> well, i gotta run - beer time
Mar 06 19:36:37 <[g2-lap]> cheers
Mar 06 19:39:22 <lennert> [g2-lap]: three cheers for all the ep93xx people :)
Mar 06 19:39:53 <[g2-lap]> lennert yeah especially those crack hw guys!
Mar 06 19:40:09 <lennert> hehe
Mar 06 19:40:27 <lennert> and the hw guys that were on crack when they designed the chip
Mar 06 19:40:39 <lennert> openocd on the ep93xx is interesting
Mar 06 19:40:45 <lennert> want me to test the bitbanging?
Mar 06 19:41:56 <[g2-lap]> lennert if you want to 
Mar 06 19:42:09 <dwery> [g2-lap]: see #nslu2-linux
Mar 06 19:42:20 <[g2-lap]> dwery Ok there is a sec
Mar 06 19:42:44 * [g2] at other computer
Mar 06 19:43:39 <[g2]> dwery congrats! awesome!
Mar 06 19:43:51 <lennert> what, who, where? :)
Mar 06 19:43:52 <dwery> :-D
Mar 06 19:44:00 <lennert> dwery: you became father? :)
Mar 06 19:44:06 <dwery> argh!
Mar 06 19:44:07 <dwery> no!
Mar 06 19:44:09 <lennert> haha
Mar 06 19:44:12 <lennert> then what? :)
Mar 06 19:44:24 <dwery> just compiled the madwifi driver under arm le :)
Mar 06 19:44:28 <lennert> oh :-)
Mar 06 19:44:29 <lennert> cool
Mar 06 23:01:44 <lennert> so, [g2] prodded me to do some gpio timings on the ep93xx
Mar 06 23:02:27 <lennert> the numbers are very good
Mar 06 23:03:27 <lennert> we can do about 10.5-odd million gpio reads per second
Mar 06 23:03:36 <lennert> and 15.8-odd million gpio writes
Mar 06 23:03:51 <[g2-lap]> vmaster 
Mar 06 23:04:05 <lennert> (at 200 MHz core clock speed)
Mar 06 23:04:59 <vmaster> oh, nice
Mar 06 23:05:47 <[g2-lap]> and since the boards have usb, ethernet, serial on board we could have some options to play with
Mar 06 23:06:18 <[g2-lap]> the boards are in the $65-$85 range from glomation
Mar 06 23:06:47 <lennert> vmaster: does openocd run _on_ arm? :)
Mar 06 23:07:46 <[g2-lap]> btw lennert thx for looking into that and getting the fluke out
Mar 06 23:07:59 <[g2-lap]> that sounds funny
Mar 06 23:08:05 <lennert> haha
Mar 06 23:08:07 <[g2-lap]> lennert get the fluke out!
Mar 06 23:08:18 <vmaster> lennert: never tried on anything but x86 pc linux
Mar 06 23:08:24 <vmaster> in theory it should
Mar 06 23:08:26 <lennert> my fluke does 100 kHz max according to the docs
Mar 06 23:09:25 <lennert> if i divide the clock by 1000 i get 16.25 kHz, if i divide it by 100 it's off the scale
Mar 06 23:10:02 <lennert> so in theory it should be able to do 8 MHz
**** ENDING LOGGING AT Tue Mar 07 10:59:56 2006