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2012-06-24 17:36 <Ayla> how many pages on the NAND should be considered as being 2048-bytes wide? Only the first two?
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2012-06-24 17:41 <larsc> either the first two or first four, can't remember exactly, but there is a section about this in the datasheet
2012-06-24 17:46 <Ayla> ok, so it's not the full eraseblock
2012-06-24 17:49 <larsc> no it's just the few pages which are loaded by the internal bootrom
2012-06-24 17:49 <Ayla> ok, that's what I wanted to know
2012-06-24 17:51 <larsc> the max pagesize supported by the bootrom is 2048
2012-06-24 17:54 <Ayla> I'm trying to chainload uC/OS-II
2012-06-24 17:54 <Ayla> from ubiboot
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2012-06-24 20:24 <wpwrak> it's interesting how circuits behave if you expose them to rapidly changing acceleration forces in the order of 3-5 g. solder joint stress fractures. yummy :-)
2012-06-24 20:30 <larsc> are you building a rocket again?
2012-06-24 20:48 <wpwrak> naw, a communication device for moments of public disquiet
2012-06-24 20:54 <wpwrak> http://projects.qi-hardware.com/index.php/p/antorcha/
2012-06-24 20:56 <wpwrak> having a bit of trouble with the timing, though. the effect only lasts for less than 100 ms, so you have to shake the stick very rapidly. right now, it's mounted on an IC tube, which flexes a bit. need to find some small aluminium rail ...
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2012-06-24 21:11 <roh> wpwrak: hihi
2012-06-24 21:12 <roh> wpwrak: i like the project desc.
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Don't scan the NAND as it's already done elsewhere. (master) http://qi-hw.com/p/gmenu2x/64db1d7
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Check if USB cable is plugged before returning the battery level. (master) http://qi-hw.com/p/gmenu2x/7484ad2
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Open battery/USB file handlers only when needed. (master) http://qi-hw.com/p/gmenu2x/0d9977e
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Don't re-execute gmenu2x on error, just call main() again. (master) http://qi-hw.com/p/gmenu2x/a21650d
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Use function getSkinPath() instead of reading the dir of the binary (master) http://qi-hw.com/p/gmenu2x/cf20f36
2012-06-24 21:15 <qi-bot> [commit] Paul Cercueil: Removed variable/function to get the directory of the executable. (master) http://qi-hw.com/p/gmenu2x/1241523
2012-06-24 21:18 <larsc> i build something like that once, but without the accelerometer. it was rather hard to match the speed. and well people around me started to be annoyed by all the waving ;)
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2012-06-24 21:45 <wpwrak> roh: RF and acceleration sensor work perfectly. it's actually a nice example for OTA updates with atben/atusb on the other end :)
2012-06-24 21:46 <roh> ;)
2012-06-24 21:46 <wpwrak> larsc: maybe it was to big then :) i need the acceleration sensor because it's text. if i had small symmetric images, i could do without.
2012-06-24 21:49 <larsc> wpwrak: you are a usb expert. if i do a bulk transfer on a in endpoint, is this basically just telling the hardware to listen for incomming packets or is it also sending some kind of command to the other side of the link?
2012-06-24 21:53 <wpwrak> err, which side are you on ? in the case of host, you need to poll. on the side of device, you wait.
2012-06-24 21:54 <wpwrak> roles may look different depending on which layer you're on, too
2012-06-24 21:54 <larsc> i'm on both side basically ;)
2012-06-24 21:54 <wpwrak> oh dear :)
2012-06-24 21:55 <larsc> firmware on one side, libusb on the other and i'm trying to understand how it works
2012-06-24 21:56 <wpwrak> the host always initiates the communication. BUT the perspective changes a bit with how the device works
2012-06-24 21:56 <larsc> the datasheet for the chip claims that the device has a 1024 byte usb buffer, but the software always sends a 4096 byte bluk request
2012-06-24 21:56 <wpwrak> do you know this introduction to usb yet ? http://www.beyondlogic.org/usbnutshell/usb1.shtml
2012-06-24 21:58 <larsc> so i'm wondering will I see only transfers on the host side where only 1024 byte of those 4096 bytes buffers are used?
2012-06-24 21:59 <wpwrak> i think you're likely to see only 1024 bytes at a time, yes
2012-06-24 21:59 <wpwrak> unless your host combines things behind your back
2012-06-24 22:00 <larsc> ok, thanks
2012-06-24 22:09 <larsc> hm, on the other hand the standard says that a bulk transfer will be 512 bytes max
2012-06-24 22:13 <wpwrak> are you sure ?
2012-06-24 22:13 <wpwrak> at what speed are you operating ?
2012-06-24 22:16 <larsc> high-speed i guess
2012-06-24 22:16 <larsc> http://www.beyondlogic.org/usbnutshell/usb4.shtml#Bulk
2012-06-24 22:18 <wpwrak> that's just the packet size. you can have more than one packet per transfer
2012-06-24 22:20 <larsc> ah ok
2012-06-24 22:22 <larsc> so you send a request, the device respons with multiple data packets followed by an ack
2012-06-24 22:25 <wpwrak> at the wire level, i think you only have one DATAx per ACK. but if your api lets you use larger sizes (e.g., 4096), you have multiple IN-DATAx-ACK.
2012-06-24 22:27 <Ayla> guys, there's proprietary-licensed stuff on the Qi repo
2012-06-24 22:28 <Ayla> there's the Arial font on the source tree of gmenu2x
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2012-06-24 22:38 <larsc> everybody hides ;)
2012-06-24 22:59 <kristianpaul> Ayla: is just hosted or already used?
2012-06-24 22:59 <qi-bot> [commit] Paul Cercueil: Remove unused (proprietary-licensed for some) XCF fonts. (master) http://qi-hw.com/p/gmenu2x/16d66d0
2012-06-24 22:59 <Ayla> what are you talking about? :)
2012-06-24 23:01 <kristianpaul> font?
2012-06-24 23:03 <Ayla> I just removed them
2012-06-24 23:03 <Ayla> they were hosted, but not used
2012-06-24 23:05 <kristianpaul> ah, thanks !
2012-06-24 23:05 <kristianpaul> he just saw the commit log :-|
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