| 00:23.51 | GPSFan | Exiles: http://elinux.org/ZipIt |
| 00:51.52 | Exiles | ok rewired my LCD screen to be compatable with the new cable I'm going to use |
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| 14:13.08 | g1powermac | hey all |
| 14:13.25 | g1powermac | any of you guys know of a simple pbx appliances that does or can run linux with asterisk? |
| 14:14.22 | chouimat | morning |
| 14:18.03 | prpplague | chouimat: @#%^@#$%@#$% |
| 14:18.17 | prpplague | chouimat: surprise performance reviews this afternoon :( |
| 14:19.37 | chouimat | prpplague: ouch ... |
| 14:21.06 | prpplague | chouimat: plus i'm a week behind on work |
| 14:21.51 | chouimat | prpplague: it will go well ... |
| 15:45.57 | prpplague | ho ho hum |
| 15:46.15 | LyosNorezel2 | hey prpplague... how goes it? |
| 15:56.15 | prpplague | LyosNorezel2: it goes |
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| 16:09.03 | LyosNorezel2 | prpplague: fun |
| 16:09.33 | LyosNorezel2 | prpplague: I do have some very good news though |
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| 16:22.55 | prpplague | LyosNorezel2: oh? |
| 16:23.06 | prpplague | LyosNorezel2: your pregnent? |
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| 16:48.37 | sjhill | dijenerate: Hi Ellen! |
| 16:49.16 | chouimat | hi sjhill |
| 16:49.23 | sjhill | hey chouimat |
| 16:55.10 | dijenerate | hah hah |
| 16:55.29 | dijenerate | hi sjhill |
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| 18:05.03 | davidc__ | anyone have experience with v4l? |
| 18:15.09 | prpplague | davidc__: not in a long time |
| 18:15.19 | prpplague | davidc__: used to use it with some security camera stuff |
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| 18:52.28 | davidc__ | prpplague, ah. I'm trying to write myself a driver for that AT91SAM9260 camera interface for V4L |
| 18:57.16 | prpplague | davidc__: oh lovely |
| 18:57.38 | prpplague | davidc__: hope you will document it on the elinux wiki |
| 18:57.49 | prpplague | davidc__: i have to do one for the s3c2440 in a few months |
| 19:02.28 | prpplague | ho ho hum |
| 19:02.37 | prpplague | not getting proper interrupts :( |
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| 19:18.45 | davidc__ | prpplague, I plan to commit it back upstream at least |
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| 19:29.14 | prpplague | davidc__: hehe, it was more interested in a "howto" hehe |
| 19:29.41 | davidc__ | ah, heh. |
| 19:29.43 | prpplague | chouimat: performance review went well |
| 19:29.57 | davidc__ | perhaps I shall.. I can't find one anywhere |
| 19:30.11 | davidc__ | I'll at least make a note of everything I go through |
| 19:30.19 | prpplague | davidc__: that would be very helpful |
| 19:30.32 | prpplague | davidc__: i'm trying much harder to document my work as well |
| 19:30.43 | davidc__ | yeah.. I'm going to write up a big doc on porting u-boot at some point |
| 19:30.50 | chouimat | prpplague: cool ... I might go get a beer for this ;) |
| 19:30.59 | davidc__ | same with early kernel debugging |
| 19:31.02 | prpplague | chouimat: *cough* and a small raise |
| 19:31.19 | prpplague | davidc__: yea, early kernel debugging is a real black art imho |
| 19:31.29 | chouimat | prpplague: nice ... better than a drop or a freeze for 5 years :) |
| 19:31.39 | prpplague | chouimat: yea, i was pretty nervous |
| 19:32.05 | prpplague | chouimat: hehe, only complaint was that i tend to underestimate time required for a project :( |
| 19:32.28 | chouimat | prpplague: estimate is an art ... |
| 19:32.53 | chouimat | ok I have to remember that rice, chili con carne and a stout might not be a good idea for a lunch |
| 19:33.09 | prpplague | chouimat: i could have told you that |
| 19:33.19 | prpplague | chouimat: thats lager food |
| 19:33.50 | chouimat | prpplague: my cat just left the room |
| 19:35.06 | chouimat | prpplague: I only had stout so ... |
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| 19:39.14 | ds2 | them howtos... BLAH we need to keep up the illusion that everything just knows things automatically |
| 19:43.15 | Crofton | davidc__, you know much about u-boot? |
| 19:43.34 | davidc__ | just the bits I've learned the hard way |
| 19:43.39 | davidc__ | whatcha need to know? |
| 19:44.06 | Crofton | well |
| 19:44.22 | Crofton | I am trying to add support for the TI davinci processor |
| 19:44.50 | Crofton | and trying to do so in such a way that we can support easily support multiple boards based on this processor |
| 19:45.10 | davidc__ | is it based around an arm core? |
| 19:45.40 | Crofton | yeah |
| 19:45.55 | Crofton | arm926ejs |
| 19:46.05 | davidc__ | well. I can tell you what I did to add support for the AT91SAM9260 which is also an arm926ejs |
| 19:46.13 | davidc__ | I added a new makefile target |
| 19:46.21 | davidc__ | created cpu/arm926ejs/at91sam9260 |
| 19:46.42 | davidc__ | created a new arch-ar91sam926x in the include/asm-arm dir |
| 19:46.46 | davidc__ | er, 9260 |
| 19:47.44 | Crofton | so basically, create a dir in arm926ejs for processor family |
| 19:47.44 | davidc__ | yeah, or possibly specific processor |
| 19:47.44 | Crofton | and keep common stuff their |
| 19:47.44 | davidc__ | I honestly don't know if this is "the right way" |
| 19:47.44 | Crofton | heh |
| 19:47.44 | davidc__ | its just how I'm doin it :P |
| 19:47.47 | Crofton | no one knows anything |
| 19:47.52 | davidc__ | anyhow, in that folder I have the low level init code |
| 19:47.55 | Crofton | It sounds "reasonable" |
| 19:47.57 | Crofton | yeah |
| 19:47.58 | davidc__ | drivers for the common peripherals |
| 19:48.05 | davidc__ | etc |
| 19:48.12 | prpplague | Crofton: apex would be a nice fit with davinci |
| 19:48.15 | Crofton | need a board specific include file to set timings etc |
| 19:48.18 | davidc__ | for the specific board, created a new "board" directory |
| 19:48.33 | davidc__ | in board/ |
| 19:48.49 | Crofton | the problem is I know a llittle u-boot and have some code to look at |
| 19:48.59 | Crofton | apex I am not familiar with at all |
| 19:49.02 | davidc__ | big header file which is globally included which can define important timing |
| 19:49.04 | davidc__ | *timings |
| 19:49.15 | davidc__ | the reason I'm using u-boot is its build in networking.. love TFTPBoot for testing |
| 19:49.20 | davidc__ | sooo much quicker test cycle |
| 19:49.28 | Crofton | yeah |
| 19:49.31 | Crofton | I need that |
| 19:49.54 | davidc__ | even faster than jtag - just tftpboot in my kernel + initrd + its up in seconds |
| 19:49.55 | Crofton | does apex suport loading stuff via tftp? |
| 19:50.38 | Crofton | fortunately, the networking code I have for DV works :) |
| 19:50.56 | Crofton | I am mainly stuck working out the current (git) way to do NAND interfacing |
| 19:51.32 | Crofton | davidc__, do you lurk here often? |
| 19:51.41 | davidc__ | once and a while |
| 19:51.46 | davidc__ | I haven't got the nand stuff working yet |
| 19:51.52 | davidc__ | no nand chips on this board reg |
| 19:51.54 | davidc__ | *rev |
| 19:51.57 | Crofton | lucky you :) |
| 19:52.12 | davidc__ | oh, the next board rev has nand + nor on it |
| 19:52.20 | davidc__ | got it all laid out, just wanted to start simple |
| 19:52.35 | davidc__ | not to mention hand rounting 2 sdram chips, nor + nand was absolutely no fun |
| 19:53.30 | Crofton | I have a really sexy SDR board, but the idiots put Integrity on it :( |
| 19:54.12 | davidc__ | ah, so thats what you're working on porting? |
| 19:54.37 | Crofton | well, trying to get Linux going on the board insteas |
| 19:55.15 | Crofton | do you try sending your code upstream? |
| 19:56.43 | davidc__ | not yet |
| 19:56.53 | davidc__ | my linux + uboot stuff is nowhere near clean enough yet |
| 19:57.11 | davidc__ | I'll probably ping the mailinglist at some point so that anybody who wants to do a nice clean port can start from what I have |
| 19:58.34 | davidc__ | eventually I'll contribute the board defs for this back upstream, at least to the linux kernel, as thats a pretty minimal patch |
| 19:58.45 | davidc__ | and probably the video driver once I get it finished |
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| 20:00.57 | Crofton | the ARM maintainer does not seem real active |
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| 20:18.47 | prpplague | ds2: http://www.hackaday.com/2007/04/21/adding-usb-to-a-cheap-linux-router/ |
| 20:23.24 | Crofton | crosstools build cross compilers/linkers/libraries |
| 20:23.50 | Crofton | buildroot extends this by adding program compilation and image creation |
| 20:23.52 | Crofton | right? |
| 20:24.20 | ds2 | prpplague: I saw that |
| 20:35.21 | prpplague | T0mW: hehe |
| 20:35.45 | prpplague | T0mW: i've been deleteing a ton of ifdef linux_2_4 lately |
| 20:35.50 | T0mW | :( |
| 20:36.09 | T0mW | I've been folding the sources of two controllers into a single tree. fun |
| 20:36.27 | T0mW | lots of commonality, but |
| 20:36.42 | chouimat | T0mW: lot of pain :) |
| 20:36.56 | *** mode/#edev [+o prpplague] by ChanServ |
| 20:37.07 | jbevren | doh |
| 20:37.10 | T0mW | prpplague: well, it is either do it now, or redundantly maintain identical source in seperate trees |
| 20:37.11 | jbevren | I was mislead heh |
| 20:37.24 | jbevren | I thought Prp's link was to info on adding a usb IC :( |
| 20:37.25 | jbevren | hehe |
| 20:37.32 | T0mW | jbevren: been down the garden path again, eh? |
| 20:37.52 | prpplague | jbevren: naw, the adm chipset had usb host onboard |
| 20:38.32 | jbevren | tom: I'm missing the reference :) |
| 20:38.38 | jbevren | prpplague: gotcha |
| 20:39.40 | T0mW | prpplague: heh, nice job on the layout, whoever did it |
| 20:40.12 | prpplague | T0mW: yea, he does an awesome job |
| 20:40.37 | T0mW | Ah, finally, rain! |
| 20:43.05 | T0mW | prpplague: so, where can you buy one of those? |
| 20:43.06 | jbevren | http://spritesmods.com/?art=wtcluster |
| 20:43.08 | jbevren | nice |
| 20:43.16 | jbevren | he uses linuxbios to boot linux on an old winterm |
| 20:44.28 | prpplague | T0mW: our web site will be online in a few weeks |
| 20:44.52 | T0mW | prpplague: ok |
| 20:45.02 | T0mW | prpplague: price range? |
| 20:45.13 | prpplague | T0mW: $159.00 for a single unit |
| 20:45.27 | T0mW | prpplague: put me down for two |
| 20:45.38 | prpplague | T0mW: hehe, seriously? |
| 20:45.50 | T0mW | prpplague: yeah |
| 20:45.58 | T0mW | prpplague: something to play with |
| 20:46.04 | prpplague | T0mW: lovely |
| 20:46.46 | T0mW | prpplague: as a matter of fact, I had an inquiry from someone who was looking for about that same thing. I'll send him to the URL you just gave me. |
| 20:47.28 | prpplague | T0mW: we haven't gone public yet, so keep it close |
| 20:47.50 | T0mW | oh |
| 20:48.37 | prpplague | T0mW: hehe, in two weeks |
| 20:48.51 | T0mW | prpplague: well, let me know. |
| 20:48.58 | prpplague | T0mW: will do |
| 20:49.10 | prpplague | T0mW: you ever mess with that 80-pin board? |
| 20:49.11 | jbevren | prpplague: what are you selling? :) |
| 20:49.29 | prpplague | jbevren: small arm board |
| 20:49.33 | jbevren | http://www.surpluscomputers.com/store/main.aspx?p=ItemDetail&item=MON10173 <- $46 12" lcd (vga input, 800x600) |
| 20:49.40 | jbevren | prpplague: Got a link to stats? |
| 20:49.49 | jbevren | er, specs |
| 20:49.52 | jbevren | too much time gaming I guess |
| 20:50.10 | prpplague | well heck i'll just post it for now http://www.elinux.org/Hammer_Board |
| 20:50.38 | jbevren | OH |
| 20:50.41 | jbevren | yeah I want one |
| 20:50.44 | jbevren | I read that link the other day |
| 20:50.54 | prpplague | ds2: actually this is the 4th rev of the design |
| 20:51.15 | ds2 | prpplague: was mostly kidding about that |
| 20:51.35 | jbevren | prpplague: at $150ish, I'm game for one |
| 20:51.49 | jbevren | give myself a crash course in GPIO programming ;) |
| 20:52.38 | prpplague | jbevren: yea, thats the kind of stuff we are looking for\ |
| 20:52.44 | jbevren | prpplague: what's the idle/loaded power usage on that revision? |
| 20:52.57 | T0mW | jbevren: prolly only 200ma |
| 20:53.05 | jbevren | sweeeet heh |
| 20:53.28 | T0mW | jbevren: yeah, leave off ethernet PHY and save tons of power |
| 20:53.34 | Crofton | send me one and I can add OE support :) |
| 20:53.36 | prpplague | jbevren: idle is about 25mA |
| 20:53.38 | jbevren | does it have a PHY? |
| 20:53.41 | jbevren | prpplague: cool |
| 20:53.44 | T0mW | Crofton: LOL |
| 20:53.53 | T0mW | Crofton: I'll help |
| 20:54.01 | prpplague | jbevren: with some added devices you'll get it up to max out around 120mA |
| 20:54.21 | T0mW | prpplague: um, where is the microSD socket? |
| 20:54.34 | prpplague | T0mW: hehe, not one on that one, hehe |
| 20:54.44 | CosmicPenguin | T0mW: I didn't even know you could spell SD |
| 20:54.55 | prpplague | T0mW: but we'll have a carrier board that has a sd/mmc slot |
| 20:55.11 | jbevren | T0mW: just use the SPI pins ;) |
| 20:55.35 | jbevren | prpplague: error on the pin function table: pins 32 and 32 are both MOSI |
| 20:55.39 | Crofton | Can you reflash wo JTAG? |
| 20:55.39 | T0mW | jbevren: yeah, well |
| 20:55.39 | jbevren | er |
| 20:55.40 | jbevren | 32 and 31 |
| 20:56.07 | T0mW | miso,mosi,sck,chipselect |
| 20:56.09 | jbevren | hrm I could just use a usb ether adapter |
| 20:56.18 | prpplague | jbevren: doh sure is |
| 20:56.24 | jbevren | T0mW: I imagined one was MISO ;) |
| 20:56.27 | jbevren | but yeah |
| 20:56.28 | T0mW | jbevren: yipe! usb?! |
| 20:56.36 | prpplague | Crofton: the bootloader supports reflashing |
| 20:56.44 | jbevren | T0mW: it doesnt have an ethernet adapter onboard does it? :) |
| 20:57.02 | prpplague | jbevren: no, but you can use the enc28j60 |
| 20:57.13 | jbevren | oh duh :) |
| 20:57.16 | Crofton | apex? |
| 20:57.23 | prpplague | Crofton: yea |
| 20:57.29 | Crofton | just curious what the mechanics are |
| 20:57.31 | jbevren | provided I remember the SPI quirks in some MMC cards I'd read about |
| 20:57.48 | prpplague | Crofton: mechanics are ? |
| 20:57.49 | jbevren | (if I use an MMC) |
| 20:57.52 | ds2 | prpplague: what kind of interface do your provide on the Linux side for switching the GPIOs? |
| 20:58.08 | Crofton | how would I go about reflashing the kernel and file system |
| 20:58.16 | Crofton | how fast are the A/D's? |
| 20:58.27 | jbevren | Crofton: for a/d info etc, look the cpu up |
| 20:58.31 | jbevren | ;) |
| 20:58.43 | prpplague | ds2: initially just the devmem2 utility, but later we will have /proc entries as well as some userland applications |
| 20:58.54 | ds2 | oh |
| 20:59.06 | prpplague | Crofton: ahh yea, apex allows for reflashing the kernel and file system via rs-232 and sd/mmc card |
| 20:59.12 | Crofton | ok |
| 20:59.15 | ds2 | prpplague: what about the USB host functionality, is that a module I can load and have it start enumerating? |
| 20:59.25 | prpplague | Crofton: we will also be selling a usb-jtag device |
| 20:59.26 | Crofton | the cpu links get me to some samsung semi page |
| 20:59.37 | Crofton | I've got the olimex one |
| 20:59.38 | jbevren | ds2: I think the USB HA on that IC is supported isnt it? |
| 20:59.40 | Crofton | jtag |
| 20:59.47 | prpplague | Crofton: yea |
| 20:59.53 | jbevren | Crofton: thats a samsung cpu :) |
| 21:00.32 | prpplague | Crofton: hmm the cpu datasheet links are busted, i'll have to fix that |
| 21:00.36 | ds2 | jbevren: HA? |
| 21:00.40 | jbevren | hostadapter |
| 21:00.44 | jbevren | comes from my scsi days :) |
| 21:00.50 | T0mW | heh |
| 21:00.55 | ds2 | I think so |
| 21:01.05 | prpplague | jbevren: you the usb host and slave are both supported |
| 21:01.13 | jbevren | I got everyone at the ISP calling them scsi HA's instead of scsi cards :) |
| 21:01.17 | ds2 | but I need to be able to control when things get enumerated for an application I have in mind |
| 21:01.33 | jbevren | prpplague: hrm drivecrypter ;) |
| 21:01.40 | jbevren | albeit slow, but drivecrypt nonetheless |
| 21:01.46 | prpplague | jbevren: drivecrypter? |
| 21:01.57 | jbevren | prpplague: host to pc using gadget/blockdev |
| 21:02.01 | jbevren | er slave to pc |
| 21:02.03 | jbevren | host to drive :) |
| 21:02.07 | jbevren | software encryption on the board |
| 21:02.33 | prpplague | jbevren: ahh |
| 21:02.40 | prpplague | jbevren: acting as middle man |
| 21:02.43 | jbevren | righto |
| 21:02.48 | Crofton | does the arm920t have the ARM DSP instructions? |
| 21:02.50 | jbevren | an oversized middleman key per-se |
| 21:02.53 | ds2 | prpplague: is one allow to load and unload the host controller module to detect/remove devices? |
| 21:02.56 | prpplague | Crofton: no |
| 21:02.58 | jbevren | and at 200ma, one could power it off usb |
| 21:03.54 | prpplague | ds2: its a standard usb host controller, you can use a gpio to force a disconnect, if you are refering to your project we discussed |
| 21:04.30 | ds2 | prpplague: Oh so if I kill power, it will clean up? |
| 21:04.51 | jbevren | hm |
| 21:04.51 | Crofton | 500 ksps A2D |
| 21:04.52 | ds2 | I'm writing up a page for your how to... just didn't have info to flesh it out |
| 21:04.54 | jbevren | no GPC5 and GPC0? |
| 21:05.16 | prpplague | ds2: no need to kill the power for that design, simple use the gpio to pull the usb-D+ to ground |
| 21:05.21 | Crofton | will you have a small LCD module? |
| 21:05.24 | prpplague | ds2: which forces a disconnect |
| 21:05.27 | prpplague | Crofton: yep |
| 21:05.32 | prpplague | Crofton: two |
| 21:05.41 | prpplague | Crofton: a small 160x160 grayscale |
| 21:05.43 | ds2 | prpplague: well, I need to kill power for the benefit of the other side |
| 21:05.51 | prpplague | Crofton: and the other being the 128x128 color from sparkfun |
| 21:05.57 | prpplague | ds2: ahh |
| 21:06.05 | Crofton | I have a potential app, for when I have time |
| 21:06.11 | jbevren | ds2: one power transistor, some discretes, and a GPIO ;) |
| 21:06.30 | ds2 | jbevren: I'll just use a maxim chip designed for that purpose |
| 21:06.31 | prpplague | Crofton: cool deal |
| 21:06.36 | jbevren | ds2: or that ;) |
| 21:07.11 | ds2 | prpplague: are you allow to say how many layers is that board? |
| 21:07.15 | Crofton | http://radiolocation.tripod.com/ |
| 21:07.22 | prpplague | Crofton: after the first round of beta testing, i'll have some more freebie units for projects |
| 21:07.29 | Crofton | I want to do a dsp version of the RX |
| 21:07.36 | prpplague | ds2: i can't discuss the manufacturing |
| 21:07.46 | Crofton | he could, but he would have to kill you |
| 21:07.49 | prpplague | ds2: but the schematic will be available to those who purchase a board |
| 21:07.59 | T0mW | with 8bits you can run the Panasonic EDMGRB8KJF (640x480 4096 colors) |
| 21:08.07 | prpplague | T0mW: yep |
| 21:08.26 | ds2 | prpplague: I was just wondering for statistical reasons how many layers was needed.... I gave up trying to do a Atmel in 2 layers ;) |
| 21:08.28 | T0mW | no TFT but those are pin hogs anyway |
| 21:08.46 | prpplague | ds2: hehe, lets just say its alot more than 2 |
| 21:08.50 | prpplague | T0mW: yea |
| 21:08.54 | ds2 | okay, that's all I wanted to know |
| 21:09.13 | prpplague | T0mW: we basically left it for small stn's and lcds with controllers |
| 21:09.13 | T0mW | that is probably, at least, and 8 layer boards |
| 21:10.05 | T0mW | heh, 2mil holes too |
| 21:10.10 | prpplague | http://www.bgmicro.com/index.asp?PageAction=VIEWPROD&ProdID=10816 |
| 21:10.16 | ds2 | you can drill 2mil holes?! |
| 21:10.18 | prpplague | i'd like to see it working with that |
| 21:10.22 | prpplague | ds2: laser |
| 21:10.24 | T0mW | ds2: laser |
| 21:10.40 | ds2 | oh |
| 21:10.51 | ds2 | I would hate to have to be responsible for a 2mil drill bit ;) |
| 21:10.54 | T0mW | ds2: they also "etch" boards with lasers |
| 21:11.27 | prpplague | T0mW: we had hell trying to get feducials in |
| 21:11.35 | ds2 | much rather see it working with this LCD: |
| 21:11.37 | ds2 | http://www.sparkfun.com/commerce/product_info.php?products_id=712 |
| 21:11.45 | ds2 | if you can call that an LCD ;) |
| 21:11.52 | prpplague | T0mW: our first run didn't have any and the assembly house charged extra |
| 21:12.22 | prpplague | ds2: http://www.sparkfun.com/commerce/product_info.php?products_id=569 |
| 21:12.27 | ds2 | prpplague: is it FCC certified? |
| 21:12.29 | prpplague | ds2: thats the one we have working |
| 21:12.37 | prpplague | ds2: nope, not at this time |
| 21:12.48 | ds2 | the Nokia one is I2C...that's cheating! |
| 21:12.59 | T0mW | prpplague: wrap it in tinfoil, it will pass |
| 21:13.06 | prpplague | T0mW: hehe |
| 21:13.19 | T0mW | feed thru caps |
| 21:13.30 | prpplague | T0mW: i only use foil for my head so the aliens can't read my thoughts |
| 21:13.31 | ds2 | would it be inappropriate of me to offer to mill up cases for the board? ;) |
| 21:13.57 | prpplague | ds2: we have 4 different abs plastic cases in the works |
| 21:14.04 | prpplague | ds2: one a pda style case |
| 21:14.25 | ds2 | so, in otherwords, you are saying - Yes it is inappropriate as that is direct competition? |
| 21:14.51 | jbevren | prpplague: can I whine? :) |
| 21:14.56 | jbevren | there isnt a single full GPIO port :) |
| 21:15.11 | jbevren | (/whine) :) |
| 21:15.21 | prpplague | ds2: we don't care what you do, just thought you'd want to know that we had cases in the works |
| 21:15.29 | prpplague | jbevren: sorry i don't understand |
| 21:15.40 | jbevren | well you know all the GPIO ports are 16 bits |
| 21:15.51 | jbevren | the 'fullest' one is GPC, but bits 5,6,7 arent extended :) |
| 21:15.56 | ds2 | prpplague: gotcha... I do small machining as a hobby so I thought I'd just offer that |
| 21:16.00 | T0mW | ~lart jbevren for such a whiner |
| 21:16.00 | purl | cats /dev/urandom into jbevren's ear for such a whiner |
| 21:16.04 | jbevren | purl ;) |
| 21:16.05 | purl | (: |
| 21:16.14 | jbevren | purl botsnack |
| 21:16.14 | purl | jbevren: thanks |
| 21:16.22 | prpplague | jbevren: yea, they aren't "full" ports in that respect |
| 21:16.43 | jbevren | prpplague: One could make due in software of course |
| 21:16.47 | T0mW | use a shift register tied to the SPI |
| 21:16.52 | prpplague | jbevren: but what i have planned is a nice little driver module that will allow you to group a number of the pins together |
| 21:16.57 | jbevren | T0mW: good idear ;) |
| 21:17.08 | jbevren | prpplague: oh very cool |
| 21:17.10 | T0mW | IIRC, 74HC194 |
| 21:17.15 | jbevren | so a kernel level pinmapping driver? |
| 21:17.35 | prpplague | jbevren: yea, with a /proc entry |
| 21:17.44 | jbevren | very cool |
| 21:17.50 | jbevren | acceptable ;) |
| 21:18.01 | prpplague | jbevren: and a char driver that would be similiar to a ide block device |
| 21:18.02 | jbevren | I was just thinking about virtual bus programming |
| 21:18.14 | jbevren | prpplague: that's confusing heh |
| 21:18.15 | prpplague | jbevren: i.e. /dev/gpioa would be for the whole group |
| 21:18.19 | jbevren | ohh |
| 21:19.02 | prpplague | jbevren: /dev/gpioa1 would be for gpio 1 of group a |
| 21:19.02 | ds2 | <PROTECTED> |
| 21:19.02 | jbevren | ds2: using proc for device IO is somewhat nonintuitive :) |
| 21:19.02 | ds2 | T0mW: so the code is NOT going back to the main kernel tree? |
| 21:19.08 | ds2 | jbevren: it is if you are used to gumstix ;) |
| 21:19.22 | jbevren | ds2: mind you, I dont mind proc interfaces |
| 21:19.24 | jbevren | hehe |
| 21:20.06 | prpplague | ds2: yea the /proc entry will be there as well, but for userland application, a char device is better |
| 21:20.06 | jbevren | sysfs is probably better than dev still |
| 21:20.06 | jbevren | shrug |
| 21:20.06 | prpplague | jbevren: yea, i'm still getting used to using sysfs |
| 21:20.14 | jbevren | coudl have proc spit the port out in binary for easy scripting |
| 21:20.20 | prpplague | jbevren: yea |
| 21:20.26 | ds2 | prpplague: /dev is a zoo thesedays... half people out there have udev, other half are split between static /dev and devfs |
| 21:20.34 | jbevren | and the dev use straight binary (not ascii'ized binary, but raw bytes) |
| 21:20.39 | T0mW | prpplague: somewhere, someday, that Samsung 244T monitor is going to show up. Maybe Friday, maybe Monday... |
| 21:20.49 | prpplague | T0mW: hehe |
| 21:20.58 | T0mW | prpplague: I bought one |
| 21:22.01 | T0mW | prpplague: from some odd lot surplus from Missouri, I asked them for a UPS tracking number, but I guess it was enough that they shipped it via ups? |
| 21:24.17 | jbevren | here's a question for anyone that knows the answer.. |
| 21:24.36 | jbevren | this IC could drive any LCD panel that has matching lines right? |
| 21:24.39 | T0mW | prpplague: how many milliamps can you put on that 3.3v output? |
| 21:24.41 | jbevren | (i.e. 8bit ones, or a mono one) |
| 21:24.52 | jbevren | I have some old 320x200 panels that are 1bpp |
| 21:25.53 | ds2 | just make a controller with a bunch of PALs |
| 21:26.05 | ds2 | it really isn't that hard |
| 21:27.08 | jbevren | ds2: for that ol dpanle, one pal should do :) |
| 21:27.17 | jbevren | at 1bpp, thats not much FB ram :0 |
| 21:27.38 | T0mW | It can support 1-bit per pixel, 2-bit per pixel, 4-bit per pixel, and 8-bit per pixel for interfacing with the palettized TFT |
| 21:27.38 | T0mW | color LCD panel, and 16-bit per pixel and 24-bit per pixel for non-palettized true-color display. |
| 21:28.07 | ds2 | it isn't the ram, it is all those dividers |
| 21:28.22 | T0mW | jbevren: as long as you have enough pins. That is the LCD controller info from the S3C2410 manual. |
| 21:28.25 | prpplague | T0mW: i don't have the spec directly in front of me but its not much, the 3.3v out is really more for driving something small |
| 21:28.35 | T0mW | prpplague: k |
| 21:28.50 | T0mW | prpplague: was thinking of 50ma tops |
| 21:28.53 | prpplague | jbevren: the logic levels have to be 3.3v or you'll have to run a level shifted |
| 21:29.04 | prpplague | T0mW: yea thats about right |
| 21:29.18 | ds2 | what do they call those panels that are treated as if they are 4 panels on 4 quadrants? |
| 21:29.28 | T0mW | jbevren: e.g. a 3.3v logic supply on the LCD, not a 5v logic supply. |
| 21:29.38 | T0mW | ds2: expensive? |
| 21:29.58 | T0mW | hehhee |
| 21:30.01 | prpplague | jbevren: you can run one of the old 5v based ones just need to add the level shifters |
| 21:30.06 | ds2 | T0mW: I got a few of those cheap...640x200 but you got to program them as 4 320x100 panels |
| 21:30.12 | prpplague | jbevren: that one i posted from bgmicro is a 5v based |
| 21:30.21 | prpplague | jbevren: i plan to post a howto for that |
| 21:30.35 | ds2 | you might remember them as those 'fedex' panels that was going around years ago |
| 21:32.08 | prpplague | T0mW: they do |
| 21:32.15 | prpplague | T0mW: checked just this week |
| 21:32.34 | T0mW | good, two more should do it them, OH! touchscreen! |
| 21:32.59 | prpplague | http://trus.imageg.net/graphics/product_images/pTRU1-3141852dt.jpg |
| 21:33.38 | prpplague | T0mW: the hammer board doesn't have the ts support brought out so we'll have a howto on using the ads7843 |
| 21:33.47 | T0mW | nod |
| 21:33.58 | jbevren | ahh the GPIOs arent 5v tolerant? |
| 21:34.03 | prpplague | jbevren: nope |
| 21:34.05 | jbevren | (that said, I thought 3.3v could usually drive a 5v input) |
| 21:34.14 | ds2 | jbevren: that as a nasty little detail |
| 21:34.19 | T0mW | was just thinking of that ADS7xxx thingy |
| 21:34.25 | jbevren | ds2: nod |
| 21:34.29 | jbevren | Its not surprising tho |
| 21:34.40 | jbevren | with the 5v input, I thought it woudl be 5v tolerant ;) |
| 21:34.51 | T0mW | jbevren: you need to be careful driving 3.3v from a 5v source though |
| 21:34.59 | ds2 | but given the audience... I suspect that is a market ploy so people will burn then up and buy more ;) |
| 21:35.01 | ds2 | j/k |
| 21:35.05 | T0mW | LOL |
| 21:35.10 | T0mW | yeah |
| 21:35.15 | prpplague | next version of the hammer board will be fully 3.3v with the suspend/resume functionality |
| 21:35.23 | T0mW | Dave is taking lessons from Bill Gates! |
| 21:35.37 | prpplague | T0mW: ?? |
| 21:36.00 | ds2 | prpplague: why not make it 2.0V input? so it'll run reliably off either a LiIon or 2AAs |
| 21:36.12 | T0mW | "here stupid, put your finger in this hole" (IOW, bang the pins with 5volts). |
| 21:36.29 | jbevren | T0mW: whyso? (other than pullups on the 5v inputs causing latchup) |
| 21:36.49 | prpplague | T0mW: ? |
| 21:37.12 | prpplague | ds2: i'd have to look at that, not sure we'd have the room |
| 21:37.16 | prpplague | ds2: but i'll look |
| 21:37.27 | prpplague | ds2: we'd need some pumpups |
| 21:37.37 | T0mW | jbevren: you will get a supply loop where the extra 1+ volts will try to equalize (go someplace), the IO buffers will then start to heat up with the additional current and eventually fail: either real soon, or a bit a later. |
| 21:37.41 | prpplague | ds2: that might be better done externally |
| 21:37.54 | jbevren | ds2: that said, you could build your own pump and connect that to the board ;) |
| 21:37.56 | ds2 | prpplague: if you get the power down enough, I'd think you can get away with just charge pumps with the cap on the die of the pump |
| 21:38.00 | T0mW | s/1+ volts/1.7volts |
| 21:38.08 | jbevren | T0mW: Yeah, I understood that much ;) |
| 21:38.23 | jbevren | I'd build a voltage limiting circuit (i.e. diodes inline) |
| 21:38.25 | ds2 | jbevren: yes and no... arm chips seem to need 234091238409238423849023849023840238904 different voltages |
| 21:38.25 | jbevren | hehe |
| 21:38.32 | jbevren | ds2: ahh |
| 21:38.36 | T0mW | prpplague: you know, ds2 does ahve something |
| 21:38.46 | jbevren | I'd just use the 3.3v input on the module, and pump the 2v up externally |
| 21:38.57 | ds2 | regardless of how you look at it, 9V batteries are damn expensive |
| 21:39.00 | prpplague | jbevren: thats my though as well |
| 21:39.05 | prpplague | thought |
| 21:39.14 | jbevren | It's somewhat wasteful I guess |
| 21:39.16 | jbevren | but shrug heh |
| 21:39.19 | ds2 | 2AA's are cheap enough you can toss it into the kit and makeit ready to go |
| 21:39.22 | T0mW | prpplague: if you elminate the 3.3v regulator and 5volt input, that saves some bucks. BUT, you can now run the board off two akaline cells. |
| 21:39.35 | jbevren | lol 2xAA is cheap enough that people that own GP2X's are okay with replacing them every 2 hours |
| 21:39.45 | prpplague | T0mW: still gotta have the 3.3v as well as the 1.8v |
| 21:39.47 | ds2 | and all the up down conversion takes its toll... converters are around only 90% efficient |
| 21:40.22 | T0mW | prpplague: oh, so you are deriving the 1.8 from the +5 regulator? or from the +3volt rail? |
| 21:40.40 | prpplague | T0mW: the 1.8v is coming from the 3.3v rail |
| 21:40.44 | T0mW | good |
| 21:41.01 | jbevren | would it harm the 5v:3.3v regulator to backfeed the 3.3v out pin with vcc? |
| 21:41.04 | ds2 | 1.8v via linear is wasting over 50% power! |
| 21:41.12 | jbevren | . o O ( linear? ) |
| 21:41.43 | prpplague | jbevren: if you want to power it via a 3.3v source, you can remove the 3.3v regulator |
| 21:41.46 | jbevren | ds2: I dont mean to be insulting, but you have to trade cost for quality ;) |
| 21:41.49 | T0mW | prpplague: remove the +5volt regulator IC from the board, remove the "+5volt input" label from the schematic, and change "+3.3 output" to "+3.3 volt input". |
| 21:41.51 | jbevren | prpplague: gotcha |
| 21:42.17 | prpplague | T0mW: yep, already done for next gen |
| 21:42.21 | T0mW | prpplague: then the board can be run from two akaline cells or from external +3v3 power |
| 21:42.29 | jbevren | nod |
| 21:42.32 | T0mW | prpplague: ok |
| 21:42.42 | jbevren | and if I must use 5v, I can just grab a 3.3v regulator externally |
| 21:42.45 | jbevren | hehe |
| 21:42.50 | T0mW | ~praise ds2 |
| 21:42.51 | purl | All hail ds2! |
| 21:42.56 | T0mW | heh |
| 21:43.02 | jbevren | hail! heh |
| 21:43.08 | prpplague | T0mW: i still don't see how you'd be able to run it from two AA's though without a pumpup |
| 21:43.18 | ds2 | url botsnack |
| 21:43.23 | ds2 | ppurl botsnack |
| 21:43.26 | ds2 | arrgg |
| 21:43.33 | T0mW | why, isn't the samsung a 3v3 processor? |
| 21:43.33 | ds2 | purl botsnack |
| 21:43.33 | purl | ds2: aw, gee |
| 21:44.00 | ds2 | prpplague: what's the lower limit on the 3.3V line? |
| 21:44.03 | T0mW | yeah, it is |
| 21:44.43 | jbevren | ds2: how'd tha tP get clear to the second line? |
| 21:44.52 | T0mW | ds2: it would depend on the supply tolerance of the other ICs, DRAM, Flash, etc. |
| 21:45.00 | jbevren | prpplague: the CPU in the gp2x 'requires' 3.3v :) |
| 21:45.03 | jbevren | but it runs fine at 3.0 |
| 21:45.09 | prpplague | T0mW: yea its 3.3v but 1.5x2 is 3.0 |
| 21:45.23 | prpplague | T0mW: 3.0 != 3.3 |
| 21:45.52 | prpplague | ds2: the 3.3v line is +-.05 |
| 21:45.53 | ds2 | Ohhhh the samsung chip doesn't need 3.3v to function? |
| 21:45.58 | ds2 | ack |
| 21:45.59 | T0mW | ds2: most times, it is a 10% supply tolerance, that would be 2.9v..3.6v, the range of two fully charged akaline cells to nearly depleted. |
| 21:46.32 | T0mW | ds2: no, the 3.3 is for the IO buffers, the ARM core runs at 1.8volts |
| 21:46.32 | ds2 | T0mW: eh? last I checked alkaline batteries are 2x0.9v to 2x1.5v |
| 21:46.53 | ds2 | Hmmm |
| 21:47.01 | prpplague | ds2: specs are for AA to be 1.5v, but most rechargables are only 1.2 |
| 21:47.22 | jbevren | ds2: I'm guessing, but I imagine once it drops below 1.2v, internal battery resistance will cause issues on load surges |
| 21:47.30 | ds2 | prpplague: yes, that's why I asked for about 2.0v since the cut off for a lot current stuff is about 0.9v/cell |
| 21:47.32 | T0mW | typically, they will be at 1.65 volts fresh off the shelf |
| 21:47.46 | jbevren | so once the output gets below 2.5v on a battery pair, it's not going to be reliable anyway :) |
| 21:48.24 | ds2 | if it is just for the IO buffers, then couldn't this be partially solved by selecting low voltage flash and low voltage SDRAM? |
| 21:48.31 | prpplague | T0mW: right for alkaline, but if i were going to do something to support AA, i'd go for 1.2v rechargble running at 2200mAh |
| 21:48.33 | T0mW | yeah, but at 150ma active current, and you use AA cells, that will keep you going for an hour or two. You could always use C cells... |
| 21:48.48 | T0mW | prpplague: then you would be fscked |
| 21:48.55 | jbevren | ds2: undervoltage can cause drive issues on IO buffers |
| 21:48.59 | prpplague | T0mW: why? |
| 21:49.00 | jbevren | such as excessive ring |
| 21:49.16 | T0mW | prpplague: ah, 'cause you would need three + regulation |
| 21:49.25 | jbevren | T0mW: nod |
| 21:49.25 | ds2 | last year I heard they were working on a MSP430 version that were spec'ed for running on 2cells (1.8V) so.... |
| 21:49.33 | prpplague | T0mW: or a pumpup |
| 21:49.49 | T0mW | ds2: the problem is not in the processor |
| 21:49.51 | jbevren | I'm thinking LiIon :) |
| 21:50.01 | T0mW | ds2: processor will run down to 1.6v |
| 21:50.16 | ds2 | T0mW: no no... I am just saying the MSP430 version might give good ball park numbers to shoot for |
| 21:50.24 | T0mW | ds2: oh |
| 21:50.38 | prpplague | jbevren: yea, i much prefer dual cell liion at 3.7v |
| 21:50.44 | ds2 | we are debating all the sources, but I assume TI did some research before coming up with specs |
| 21:50.50 | ds2 | so why not 'borrow' their research |
| 21:51.07 | prpplague | T0mW: the TPS63000 is what we are using |
| 21:51.17 | T0mW | prpplague: well, they do make 3.6 LiON? |
| 21:51.18 | ds2 | but LiIon has a wide range of voltages... 4.1v down to 2.7v |
| 21:51.18 | prpplague | T0mW: and we can run on as low as 2.0v |
| 21:51.39 | T0mW | ds2: yeah, but a fairly flat discharge curve |
| 21:52.02 | prpplague | T0mW: one sec, i'll get the url |
| 21:52.16 | T0mW | prpplague: that is a TI part |
| 21:52.27 | ds2 | T0mW: would you happen to have numbers on how much is lost at the tail end of the curves if you cut off at say 3.3V? I been trying to get precentage figures for a long long time |
| 21:52.47 | T0mW | ds2: no info |
| 21:53.19 | prpplague | T0mW: yea |
| 21:53.33 | T0mW | PS63000 buck-boost DC/DC converter delivers up to 96% peak efficiency |
| 21:54.05 | T0mW | wow |
| 21:54.15 | ds2 | does the PS63000 switch on up and down or jsut switch to upconvert and linear to down convert? (like the maxims) |
| 21:54.34 | prpplague | T0mW: http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2013 |
| 21:54.37 | T0mW | gak, it does need an external choke |
| 21:54.38 | prpplague | T0mW: that pack is lovely |
| 21:54.49 | prpplague | ds2: either way |
| 21:55.00 | prpplague | ds2: overvoltage is dropped to 3.3v |
| 21:55.07 | prpplague | ds2: undervoltage is pumped to 3.3v |
| 21:55.14 | T0mW | ah well, it is a nice little device |
| 21:55.25 | ds2 | prpplague: but how is it dropped to 3.3V? |
| 21:55.30 | prpplague | T0mW: we are using it in a next gen handheld |
| 21:55.53 | T0mW | heh, it comes in the handy 3mm square packaging |
| 21:55.58 | prpplague | ds2: its switched |
| 21:56.44 | prpplague | T0mW: our next gen handheld will be able to run 15 hours continuous without recharge |
| 21:57.27 | prpplague | T0mW: 3.7v at 7200mAh |
| 21:57.55 | prpplague | T0mW: big mAh battery available in a handheld |
| 21:57.55 | T0mW | ds2: Pulse Width Modulation --> pulsating DC charging an output filter |
| 21:58.59 | ds2 | WOW 10+ Watt of power |
| 21:59.20 | ds2 | it is getting to be like the startrek phaser power packets... over load them and they explode |
| 22:00.14 | prpplague | T0mW: yea, you'd be able to use the tps63001 with two AA's no problem |
| 22:00.52 | T0mW | wow, 800ma in step-up mode, that is pretty healthy, thanks for showing me that. |
| 22:01.01 | prpplague | T0mW: np |
| 22:01.15 | T0mW | prpplague: is that what you are using now? or in the next revision? |
| 22:02.00 | ds2 | hell... make 2 AAA's and package it like a PDA.... Linux based Palm III era clone! |
| 22:02.04 | prpplague | T0mW: thats what we are using in the next gen handheld from AML, and we are considering using it for a board as an addon to the hammer |
| 22:02.24 | T0mW | ok |
| 22:02.51 | prpplague | <prpplague> ds2: we have 4 different abs plastic cases in the works |
| 22:03.05 | ds2 | I know you said that |
| 22:03.27 | ds2 | just point out if it was AAA's, the resemblence to a Palm III formfactor would be incredible |
| 22:03.33 | prpplague | <prpplague> ds2: one a pda style case |
| 22:04.40 | prpplague | T0mW`food: early tests show the tps63001 pretty darn awesome |
| 22:11.00 | *** join/#edev g1powermac_ (n=g1powerm@adsl-18-105-164.sdf.bellsouth.net) |
| 22:11.17 | CosmicPenguin | WHy is tom blitting for dinnner? |
| 22:11.25 | CosmicPenguin | pixels taste awful |
| 22:11.49 | ds2 | organic ones taste better |
| 22:35.33 | T0mW`food | CosmicPenguin: Ugly Tomatoes |
| 22:36.44 | jbevren | hehe |
| 22:36.52 | T0mW`food | mmmmmm! |
| 22:54.03 | CosmicPenguin | I was rather productive today, but I feel like I did nothing |
| 22:54.09 | CosmicPenguin | and I am totally not motivated |
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| 23:20.30 | *** join/#edev emil|k`work_ (n=emil@pD950CF33.dip0.t-ipconnect.de) |
| 23:37.52 | *** join/#edev Crofton (n=balister@66-207-66-26.black.dmt.ntelos.net) |
