The purpose of this Yahoo Group is to discuss the new Open Source Open Hardware Single Board Linux Computer iMX233-OLinuXino....
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olimex
Mar 9, 2012 5:02 pm
today we have some very preliminary schematic ready. what we did so far: 1. main CPU component was created, together with power supply surrounding components ...
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olimex
Mar 10, 2012 6:44 am
I got interesting e-mail few days ago I think it's good to share here for further discussion: <---snip---> 1) Don't try to use LTIB. It sucks. It's very...
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bobcousins34
Mar 10, 2012 1:55 pm
Looks great so far. I would really like a JTAG connector! Ideally the small 10 pin form factor not the huge 20 pin 0.1" which takes up space. Or at least, JTAG...
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bobcousins34
Mar 10, 2012 2:22 pm
I just want to mention a previous open source project, which is now basically abandoned, but may be of some interest. I worked with a couple of other guys on a...
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olimex
Mar 10, 2012 2:27 pm
initially we though to have no JTAG, but now I think that if we add the JTAG connector as option and not populate on the boards cost nothing, if someone want...
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olimex
Mar 10, 2012 2:29 pm
yes, I spotted these when searched for iMX233 info on the web looking at the specs seems iMX233 is specially built for portable media player with the onchip...
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bobcousins34
Mar 10, 2012 3:04 pm
That's right. Freescale acquired Sigmatel a while ago who specialised in media player Socs I think. The iMX233 appears to be a rebadged STMP 3780. The STMP...
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bobcousins34
Mar 10, 2012 3:20 pm
A "no fit" option would be great. True, there is lots of stuff to initialise! Once past the learning curve though, its not so bad. The great thing about open...
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olimex
Mar 10, 2012 4:03 pm
I think they target education, with this design we want to build industrial grade computer with -25+85C operating temperature and DC/DC on the power supply...
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bobcousins34
Mar 10, 2012 5:13 pm
Yes, I am also interested in the 3D printer area. I work on the firmware for the R2C2 project. I would add a link, but it could be viewed as competitive...
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olimex
Mar 11, 2012 10:26 am
Raivis Rengelis just sent me e-mail: <---snip---> Checked current kernel sources and apparently i.MX23/28 is being actively supported and maintained by...
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raivisrrkb
Mar 11, 2012 10:44 am
For those wondering who the heck "Raivis Rengelis" is, that would be me :) Ok, so current state of iMX23 in Linux world is described in previous post. About...
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Donald H
donhamilton2002
Mar 12, 2012 4:58 am
... OK, try RT Linux first from your side. Put the jtag port in for the rest of us. Thank you hamilton...
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raivisrrkb
Mar 12, 2012 7:12 am
Why don't you share what is that "the rest of you" would do with the board? wbr RR...
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olimex
Mar 12, 2012 9:00 am
it's always good to have option for bare-metal programming, the trade off is that JTAG signals are shared with SDMMC1 so you will have no card while you debug...
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raivisrrkb
Mar 12, 2012 9:07 am
flash memory is not planned on board, so maybe it is possible to move sd to ssp2? that would free up parallel jtag pins. RR...
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olimex
Mar 12, 2012 11:23 am
this will spoil the LCD there may be small add-on flash/MMC board for debugging purposes Tsvetan...
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raivisrrkb
Mar 12, 2012 11:26 am
correct, 8bit LCD interface only then. And as I understand serial jtag protocol is proprietary and unknown to anyone? wbr RR...
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olimex
Mar 12, 2012 3:34 pm
I just push the new schematic to GitHub the changes for today: - DC/DC input stage +6-16VDC - DC/DC for the MCU, we have 2 USB hosts and MCU i.e. we have to...
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olimex
Mar 12, 2012 3:35 pm
collegue of mine just moved the project to new Github address: https://github.com/OLIMEX/OLINUXINO as I made the first repostory to my personal name while...
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Donald H
donhamilton2002
Mar 12, 2012 9:04 pm
... No Flash ??!!...
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Donald H
donhamilton2002
Mar 12, 2012 9:04 pm
... OK, I just checked the data sheet. Looks like the iMX233 has lots of Boot strap modes. Chapter 35 in IMX23RM.pdf. don...
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Donald H
donhamilton2002
Mar 12, 2012 9:04 pm
... Linux is not real time, Simple RTOS for real time applications....
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bobcousins34
Mar 12, 2012 10:21 pm
... That's a good question, because 400Mhz/64MB is almost no-mans land. The question is no longer about what can you do with the hardware, but what can you do...
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bobcousins34
Mar 12, 2012 10:26 pm
... Initially I thought "hmm, not open source" but after thinking about it I think it would be a great option. I never pursued SJTAG on my previous project,...
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raivisrrkb
Mar 12, 2012 10:47 pm
check out OpenWRT. All of my embedded Linux experience so far comes from there and let me tell you, it runs nice on devices with 200MHz CPUs and 16-32Mb of...
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raivisrrkb
Mar 12, 2012 10:51 pm
except that use of PJTAG prohibits booting from SD/MMC attached to SSP1, but then again, there are numerous other booting options. maybe plan for NAND daughter...
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olimex
Mar 13, 2012 4:36 am
... when I post on my blog there was comment from the developer of ttylinux http://ttylinux.net/ this runs on old i486 with 28MB of RAM :)...
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olimex
Mar 13, 2012 4:46 am
... I'm thinking about it, but adding such flash will first take some GPIOs and second will be many times expensiver than to use the low cost microSD card...
