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| 12:57.10 | chouimat | morning |
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| 15:03.55 | MothaWork | ok, looking for a smallish ARM (ARM7TDMI?) with LCD controller, USB device, onboard flash (256-1024kB), and preferably enough onboard RAM to run a 480x270x12bit framebuffer |
| 15:06.43 | MothaWork | oh, and SPI, but I could bitbang it if I had do |
| 15:06.46 | MothaWork | had *to |
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| 15:30.50 | prpplague | MonMotha: the usb is going to be the hanging point |
| 15:31.07 | prpplague | MonMotha: not many of the arm7's have usb |
| 15:31.26 | prpplague | MonMotha: the NXP LH7952x series does have sub though |
| 15:31.34 | prpplague | MonMotha: no onboard flash |
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| 15:32.25 | prpplague | MonMotha: pretty much all of the arm7tdmi's that have onboard flash and ram do not include a lcd controller |
| 15:32.47 | prpplague | MonMotha: best solution for that is to use a lcd with a spi controller to the lcd |
| 15:33.00 | prpplague | MonMotha: i.e. similiar to the nokia knock offs from sparkfun |
| 15:37.59 | MothaWork | prpplague: the LCD is pretty well chosen |
| 15:38.19 | prpplague | MothaWork: then you'll have to go with something a little more robust |
| 15:38.22 | MothaWork | I could use one of those silly FTDI USB UART thingies, but that seems dumb |
| 15:38.44 | prpplague | MonMotha: the lh7952x is pretty decent, about $9.00 per unit |
| 15:38.45 | MothaWork | basically, all I need to do is hang a LCD and a couple other dumb peripherals off USB |
| 15:38.57 | MothaWork | touchscreen, some pushbuttons |
| 15:39.15 | MothaWork | yeah, I had been looking at the NXP stuff |
| 15:39.31 | prpplague | MonMotha: yea, most of the NXP stuff isn't going to have lcd controller |
| 15:39.39 | prpplague | MonMotha: only the bluestreak stuff |
| 15:39.51 | MothaWork | and all the NXP stuff that does requires a lot of external components (flash, RAM) |
| 15:39.59 | MothaWork | which needlessly drives up the BOM on this |
| 15:40.04 | prpplague | MonMotha: indeed |
| 15:40.26 | MothaWork | are there any "off the shelf" USB connected LCD controllers with GPIO? |
| 15:40.26 | prpplague | MonMotha: you can go with a single sdram and a single nor flash |
| 15:40.41 | prpplague | MonMotha: not in a good price range |
| 15:40.45 | MothaWork | that's what I thought |
| 15:40.55 | MothaWork | most of them seem to be for the "rapid development" type stuff |
| 15:42.52 | prpplague | MothaWork: you can do a lh7952x based device for around $22.00 for the core |
| 15:42.59 | prpplague | MonMotha: minus the lcd and external connectors |
| 15:43.07 | MothaWork | that's still a little up there |
| 15:43.13 | prpplague | MonMotha: indeed |
| 15:43.23 | MothaWork | I'm half tempted to see what I can pull off using a small FPGA |
| 15:43.52 | prpplague | MonMotha: i'd be interested to see if you can |
| 15:43.58 | MothaWork | ones that can run full speed USB with minimal external components (a cheap transceiver) and have plenty of room for LCD stuff are fairly cheap. About $10 |
| 15:43.59 | prpplague | MonMotha: use one of the opencores? |
| 15:44.07 | MothaWork | would still need some external RAM, but not much |
| 15:44.34 | prpplague | yea |
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| 17:35.25 | prpplague | hmm\ |
| 17:35.40 | prpplague | anyone know where sticky keys are handled? |
| 17:35.44 | prpplague | in the kernel that is |
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| 17:50.14 | prpplague | hmm, can't seem to locate that code |
| 18:02.24 | MothaWork | dammit, I wound this transformer backwards |
| 18:09.33 | prpplague | doh |
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| 20:35.52 | prpplague | ~seen Exiles |
| 20:35.56 | purl | exiles <i=wired57@is.a.unixwhore.info> was last seen on IRC in channel #edev, 40d 22h 5m 46s ago, saying: 'I want a massaging tolet'. |
| 20:36.39 | CosmicPenguin | what a legacy to leave behind |
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| 20:36.51 | agaffney | hah |
| 20:37.04 | agaffney | awesome |
| 20:37.51 | CosmicPenguin | maybe he found it |
| 20:37.55 | CosmicPenguin | and he hasn't left sense |
| 20:37.57 | CosmicPenguin | since even |
| 20:46.47 | prpplague | hehe |
| 20:47.01 | prpplague | CosmicPenguin: yea, well, he definetly needs it since he is on my shit list |
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| 20:53.16 | ds2 | heh |
| 20:57.33 | ds2 | prpplague: has anyone in your test group tried out the PM stuff for the hammer board yet? (and gotten numbers?) |
| 20:57.47 | prpplague | ds2: PM stuff? |
| 20:57.52 | prpplague | ds2: power management? |
| 20:59.37 | ds2 | yeah |
| 20:59.49 | ds2 | I see a pm.c in mach-s3c2410 so I assume it is written already |
| 21:00.15 | prpplague | ds2: there is no power management for the Hammer , it's either on or off |
| 21:00.28 | ds2 | hmmm couldn't I suspend to RAM? |
| 21:00.44 | prpplague | ds2: no, there is no seperate control to the VddAlive signal |
| 21:00.57 | CosmicPenguin | thats unfortunate |
| 21:01.05 | ds2 | I didn't know there needs to be hardware support |
| 21:01.36 | ds2 | thought it was just a bunch of regs on the chips... so I guess pm.c in mach-s3c2410 is not applicable then? |
| 21:01.59 | CosmicPenguin | if you are going to suspend to ram, then the voltage to the RAM needs to stick around |
| 21:02.08 | CosmicPenguin | apparently RAM doesn't work so well without electrons |
| 21:02.10 | CosmicPenguin | who knew? |
| 21:02.23 | ds2 | yes, and an niave assumption is one would pull power off the regular pins inside |
| 21:02.33 | ds2 | and have a MOSFET to switch off modules as needed |
| 21:02.41 | prpplague | ds2: not for the hammer |
| 21:02.58 | prpplague | ds2: the next gen version of the hammer will be designed for portable and low power applications |
| 21:03.10 | ds2 | prpplague: know if the PXA has the same requirements (seperate HW support)? |
| 21:03.17 | prpplague | ds2: which means it will have 3.3v only supplies and have a seperate circuit for vddalive |
| 21:03.24 | prpplague | ds2: yep |
| 21:03.31 | prpplague | ds2: all do |
| 21:03.39 | ds2 | oh so I am not better off with a gumstix :( arrg |
| 21:04.03 | ds2 | low power with a quite draw of 0.050A just don't cut it for 3-4 days of standby with a normal sized batttery :( |
| 21:04.19 | ds2 | s/quite/quite large/ |
| 21:04.40 | prpplague | ds2: i don't know if the gumstix provides suspend/resume support on their design |
| 21:05.24 | prpplague | ds2: thats why we are doing a seperate design |
| 21:05.30 | prpplague | ds2: for the low power support |
| 21:05.37 | ds2 | prpplague: from my point of view, I can either roll a dice with the gumstix list for support or I can wait for your hammer and irk you with these questions ;) |
| 21:05.48 | prpplague | ds2: we will also have the sledge hammer which does have support for vddalive |
| 21:05.59 | ds2 | prpplague: do you have a physical envelope for the low power version of hammer? |
| 21:06.21 | prpplague | ds2: should be easy enough to read the schematics and specs to find out if the gumstix supports resume/suspend |
| 21:06.28 | ds2 | this is a hobby project but I want to draw up boxes in a CAD program and see if I can put all the bits together in a suitable form factor |
| 21:06.33 | prpplague | ds2: same dimesions as the hammer |
| 21:06.40 | ds2 | prpplague: schematics are not available for gumstix motherboards :( |
| 21:06.58 | ds2 | prpplague: that includes maximum Z dimension? |
| 21:07.09 | prpplague | ds2: yea |
| 21:07.16 | ds2 | cool |
| 21:07.34 | ds2 | know how much more would that be? |
| 21:07.51 | prpplague | ds2: i'm sorry i don't understand the question |
| 21:08.17 | ds2 | prpplague: the hammer is $159 isn't it? what's the target price for the new board with PM support? |
| 21:08.26 | prpplague | ds2: same |
| 21:08.32 | ds2 | Nice!! |
| 21:09.06 | ds2 | one other request, can the Z dimension of the hammer be published too? the elinux page only has the width andlength |
| 21:09.48 | prpplague | ds2: yea there is no problems posting that |
| 21:10.10 | ds2 | Or better yet, post Rhino3D models? <Very Very Very Big Grin> |
| 21:12.39 | ds2 | guess I asked too much ;) |
| 21:13.14 | prpplague | ds2: i have no clue what rhino3d is so yea, that is asking too much |
| 21:13.32 | ds2 | Rhino3D is an affordable 3D CAD package |
| 21:13.55 | ds2 | EDU versions are sub $200 new and you are allow to use it commercially after you cease to be a student |
| 21:14.01 | prpplague | i assumed as much |
| 21:14.12 | prpplague | we use solidworks for our 3d rendering |
| 21:14.32 | prpplague | ds2: what Z values are you looking for? |
| 21:14.35 | ds2 | it is sort of like a much cheaper version |
| 21:14.59 | ds2 | prpplague: just the max height. I'll draw up a bunch of boxes with that info and then try to fit it together |
| 21:15.13 | prpplague | ds2: max height from where? |
| 21:15.36 | ds2 | prpplague: if I lay the part on a reference flat surface, what is the lowest bridge I can have and still pass the module through it |
| 21:15.41 | ds2 | does that make more sense? |
| 21:15.55 | prpplague | nope |
| 21:16.17 | ds2 | let me ask this then, is there anything on the bottom besides the pins? |
| 21:16.24 | prpplague | yes |
| 21:16.51 | prpplague | ds2: but none of the components extend beyond the height of the pin spacers |
| 21:16.52 | ds2 | just the 2 caps + the header bottom? |
| 21:17.10 | prpplague | ds2: there are about 20 components on the bottom |
| 21:17.15 | ds2 | oh |
| 21:17.43 | prpplague | ds2: the header spacers are at a max of 4.5mm |
| 21:17.50 | ds2 | okay how about this value then - if I take a rat shack perf board and place the hammer on it then solder all 40 pins |
| 21:18.18 | ds2 | what is the highest point on the hammer measured from the perf board? |
| 21:18.37 | prpplague | ds2: not counting the jtag header? |
| 21:19.04 | ds2 | it looks easy to desolder so, yes, excluding the jtag header |
| 21:19.12 | prpplague | ds2: 7.9mm |
| 21:19.18 | ds2 | 'k |
| 21:19.26 | prpplague | ds2: sorry typo |
| 21:19.30 | prpplague | ds2: 7.09mm |
| 21:19.44 | prpplague | ds2: safe to say 7.1mm |
| 21:19.55 | ds2 | and just as a double check, this means: |
| 21:20.53 | ds2 | I can make a box that 0.75inches by 2.25 inches by 7.1mm + 0.060 + 0.020 and seal the hammer board inside it? |
| 21:21.07 | ds2 | where 0.060 is my PCB thickness, 0.020 is allowance for protrusion + solder |
| 21:21.34 | prpplague | ds2: as i understand it, yes |
| 21:21.43 | ds2 | nice |
| 21:23.53 | ds2 | prpplague: any guesses as to what the lowest power consumption mode will draw on the new board? |
| 21:25.31 | prpplague | ds2: lowest power running will be about 75mA |
| 21:25.39 | prpplague | ds2: suspended will be about 8mA |
| 21:27.48 | ds2 | available by christmas? =) |
| 21:30.31 | prpplague | ds2: nope |
| 21:30.55 | prpplague | ds2: we are waiting on going to production on the hammer-lp until we see how well the hammer sells |
| 21:31.30 | ds2 | oh :( |
| 21:32.57 | prpplague | ds2: the design is complete, we have proto's built and tested |
| 21:33.05 | prpplague | ds2: just not going to production yet |
| 21:33.34 | ds2 | yes, but that doesn't make a difference to outsiders |
| 21:35.56 | prpplague | indeed |
| 21:38.59 | MothaWork | darn power supply won't work :( |
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