arm-netbook

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1076 discussions

Help Taiwanese open-source GPS hardware a bit
by Paul Sokolovsky 25 Dec '13

25 Dec '13

Hello, Sorry for potential spam. There's a campaign at Indiegogo to develop a board with GPS MCU which would allow to run user programs alongside the GPS stack. It's unclear how open the GPS stack itself would be, but even if it will be a binary blob, it's still great progress comparing to current GPS chipsets. As an extra, MCU feature SPARC architecture, which alone worth to be present in every geek's personal computing museums. And early bird price starts at pretty low for 32bit "maker" scene figure of $15. So, please bid and spread the word - if it dies off, everyone talking of open source and open hardware should feel ashamed. http://www.indiegogo.com/projects/navspark-packing-32bit-features-and-gps-g… -- Best regards, Paul mailto:pmiscml@gmail.com

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Merry Christmas & Happy New Year Everyone! :)
by joem 24 Dec '13

24 Dec '13

Merry Christmas & Happy New Year Everyone! :) This year has been particularly good after finding all the interesting chaps and chapesses in this mailing list. Wishing tons of prosperity to everyone for the coming year. Best regards, Joe

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"[EOMA68] RFC: ADDITION OF SD/MMC TO STANDARD."
by Luke Kenneth Casson Leighton 24 Dec '13

24 Dec '13

i'm giving serious consideration, even at this late phase, to adding SD/MMC to EOMA68 by way of the GPIO pins as a multiplexing option. this would not have any impact on the EOMA68-A20 CPU Card: in fact, the only reason this can be considered at all is because the pins *happen* to be multiplexed as SD/MMC and GPIO *anyway*. this would also happen to give EOMA68 an SPI port as well. the idea came to me because it's something that's been forced on EOMA-26 due to the small number of pins (26) on EOMA-26. after looking at dozens of SoCs i don't think i've seen a single one these days which *only* has a [non-multiplexed] SD/MMC port. even if there was one that did (at an affordable price), a cross-bar buffer IC would take care of that. does anyone have any objections, and/or can think of any gotchas which would prevent SD/MMC from being added as a non-optional multiplexed option to EOMA-68? l.

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Exynos 4412 quad core 1.7GHz with 2GB DDR built into chip
by joem 24 Dec '13

24 Dec '13

Exynos 4412 quad core 1.7GHz with 2GB DDR built into chip: http://www.cnx-software.com/2013/12/23/hardkernel-unveils-59-odroid-u3-boar… Amazing board similar to cubie selling for USD 59. They use eMMC to gain 4x speed, runs Xubuntu 13.10 already. The heat sink requirement probably makes it a non-starter for EOMA unless a flat heat pipe could be slipped into to somehow :)

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Interesting chip the LPC1343
by joem 23 Dec '13

23 Dec '13

Hi, I ordered this FPGA dev system: http://www.kickstarter.com/projects/1575992013/logi-fpga-development-board-… [Already over subscribed by x5 and still 24 days to go :) ] I found it has a $2 LPC1343 ARM cortex chip which has within it which has USB MSD or MSC (Media Storage Device/Class) driver built into the ROM of the chip! Just connect the USB and it will open as an attached mass storage device, and then drag and drop files into it to program it! It doesn't need a programmer http://dangerousprototypes.com/docs/LPC_ARM_quick_start The IDE is by Code-Red which is Eclipse and it is available for Linux. NXP have bought them out recently and now 256k of code generated by it doesn't require a license. I can't find any more such chips from NXP. (The ones that are available with USB require software to be developed and programmed into the device that turns it into an MSD - which is great if you got the time.) May be this chip useful to add on to MEB or other bits of hardware to to add features such as programmable switch mode power supplies or extend general purpose IO - because it simplifies software development for those chips and their programming, and easier to update firmware once a project has shipped.

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Mer Images for Eoma68/Improv
by Marco Martin 20 Dec '13

20 Dec '13

Hi all, I prepared some images, of sd cards and of the system installed on the nand of Mer: one version pretty minimal, and one version with a full KDE installation, with the normal desktop alongside Plasma Active http://makeplaylive.com/~notmart/Improv/ some documentation of them is here: http://linux-sunxi.org/Mer_and_Plasma_Active if somebody wants to test/play with them, he's welcome :) Cheers, Marco Martin

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how to get 4096-bit RSA private keys for free.
by Luke Kenneth Casson Leighton 18 Dec '13

18 Dec '13

http://www.cs.tau.ac.il/~tromer/acoustic/ including from secure "Tempest" servers. i find this hilarious. they're using power-fluctuation analysis using either a physical contact with the machine (skin-contact with the metal case is enough but an earth point on the VGA or USB cable is better), or, my favourite, is listening for the distinctive sound made by inductor-capacitor feedback loops in the power circuits. apparently some mobile phone microphones are just about good enough to hear the 20khz+ whine: that's enough to determine the power consumption during the RSA key calculations, and that's good enough to get any private key. takes a hell of a long time, but that's ok :) all those "secure servers" out there? all you have to do is lease space to put in your own co-located server with an ultrasonic microphone and it's game over for neighbouring web server certificates. absolutely hilarious. sorry i just had to share this with someone. l.

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upstreaming the fex for the eoma
by Marco Martin 16 Dec '13

16 Dec '13

Hi all, I would like to upstream the script.fex file (or the files?) for the eoma68 into https://github.com/linux-sunxi/sunxi-boards my fex at the moment is: https://github.com/notmart/sunxi-boards/blob/master/sys_config/a20/eoma68_a… that seems to work correctly. however I'll forward some comments on it that were made on the linux-sunxi irc channel (oliv3r that i think he maintains the sunxi-boards repo): it has enabled several things that aren't available on the improv (wifi, touchscreen on i2c.so, enabled cameras) basically boils down to try to do a fex file that catches all the possible feature boards vs one fex file per feature board. Not knowing a lot about this in particular I can pretty much just refer what i was told and let you guys decide how we want the fex file, or the multiple fex files that would end up in that repository (at least i think it makes sense to put everything in that place) Cheers, Marco Martin

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Writing efficient C on ARM
by Alain Williams 16 Dec '13

16 Dec '13

I just came across this that might be of interest: http://www.davespace.co.uk/arm/efficient-c-for-arm/ -- Alain Williams Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 http://www.phcomp.co.uk/ Parliament Hill Computers Ltd. Registration Information: http://www.phcomp.co.uk/contact.php #include <std_disclaimer.h>

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backlog
by Luke Kenneth Casson Leighton 15 Dec '13

15 Dec '13

apologies, i'm aware i have a backlog of messages on arm-netbooks to attend to, which is unusual (almost unheard-of) in the past 18 years i've been working on software-libre projects. if there's anything hugely urgent please do raise it again in summary form. thanks for understanding, l.

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