#qi-hardware IRC log for Friday, 2012-07-27

kristianpaulxiangfu: Hi01:02
kristianpaulhow much current drags the slx9 board as it is right now?01:04
xiangfukristianpaul, how do measure it?01:07
xiangfukristianpaul, I have a multimeter01:10
kristianpaulyou need tap your main powesupply source01:11
kristianpauland set multimeter to Amps01:11
kristianpaulso one wire from main powersupply yo multimeter and the other wire return to slx9 board01:13
xiangfukristianpaul, sorry. the power supply is 5v. then goes to 1.2v and 3.3v. then both 1.2 and 3.3 goes to slx9. then GND back to power supply.01:37
xiangfukristianpaul, please give more detail how to do that. should I connect one PIN of multimeter to 5v+? then?01:38
kristianpaul5v power supply (GND) <--->(-)Multimeter(+)---> (GND)SLX9(+)<------>5v power supply01:45
kristianpaulxiangfu: yes01:45
kristianpaul5v or GND01:45
kristianpaulthen back to the slx901:46
kristianpaulyou tap onw of the two wires that provides the 5V using the multimeter01:46
kristianpauleither 5v or gnsd wich get esier to you01:47
xiangfuI connect to 5v+ and 1.2v+. it give 0.1mA01:51
kristianpaulwhat about connect between slx9 gnd and power supply gns01:52
xiangfuwait. it's 0.65mA01:52
kristianpaulconnect multimeter between those two01:52
kristianpaulhmm and thats "standy" is a bit power hungry.. well thats to be expected01:53
kristianpaulyou could compare later when load a mm bitstream to it :)01:54
xiangfuwhat happen if I load mm bitstream to slx9?01:59
xiangfuI have tried load fjmem to slx9.01:59
xiangfusince the mm/fjmem bitstream are all for slx4501:59
kristianpaulbut fjmem is intended for flashing a NOR basically no?02:00
kristianpauli not sure what will happen.. but there is only way :)02:01
kristianpaulxiangfu: basically mm bitream will not fit 02:03
kristianpaulxiangfu: Btw !02:04
kristianpaulwhat are your intentions with that slx9?  :-)02:04
kristianpaulare you designing next qi-hw device? :o 02:05
kristianpaulyou have plans for adding peripherals besides jtag? :-)02:07
kristianpaulguess serial port for a tiny mm soc :_D02:08
xiangfuyes. or maybe trigger a LED light by jtag. 02:12
kristianpaulah thats interesting02:13
xiangfukristianpaul, Hi07:40
xiangfukristianpaul, still there?07:40
hellekintoday I will meet people from Intel Brazil.10:37
hellekinI already made contact with the marketing director of CEITEC, the Brazilian chip fab. 10:37
hellekinBoth companies were quite surprised with the concepts I proposed them, and also interested. They probably don't have many people offering them to change the world by helping their competitors.10:38
whitequarkTIL that multilayer PCBs can have up to 44 layers11:34
whitequark44... it's more like plywood11:35
wpwrakhellekin: kewl :) what kind of revolution did you propose ?11:50
qi-bot[commit] Werner Almesberger: fisl2012/all.fig: fix and clarify genkicat use (master) http://qi-hw.com/p/wernermisc/4af6a6411:58
qi-bot[commit] Werner Almesberger: fisl2012/: text cleanup (master) http://qi-hw.com/p/wernermisc/a4a651e11:58
qi-bot[commit] Werner Almesberger: fisl2012/all.fig: add dsv (master) http://qi-hw.com/p/wernermisc/ec69e4011:58
qi-bot[commit] Werner Almesberger: fisl2012/: clarify that symbols come from the component editor (master) http://qi-hw.com/p/wernermisc/bc0080811:58
hellekinwpwrak: have the chipfab diversify its activities and produce free hardware to build public communications infrastructure :)12:32
wpwrakhellekin: any technical details ?13:54
qi-bot[commit] Werner Almesberger: fisl2012/: some small improvements; made BOOM slide more useful (master) http://qi-hw.com/p/wernermisc/89af0a316:21
Aylado you guys know how I can power off the device from a non-linux code? (from a bootloader actually)16:26
AylaI'd like the bootloader to power off the device if there's an error16:29
whitequarkyeah. check the jz4720 manual on power management16:32
whitequarkyou'd need to turn off backlight GPIO and put the CPU in the deepest sleep mode16:33
Aylathat's enough?16:35
whitequarkafaik yes16:35
Aylathank you, I'll take a look16:36
AylaDebian's xburst-tools package does not contain jzboot?16:56
Aylaah, maybe I have an old version16:59
AylaI'll just build it from GIT17:01
Aylathe ./configure of xburst-tools is wrong17:25
AylaI mean configure.ac17:25
Aylathe PKG_CHECK_MODULES(LIBUSB, ...) is not translated17:25
Aylaso it results in a non-working ./configure script17:26
larscAyla: you are just missing the .m4 for the PKG_CHECK_MODULES macro17:31
larscwhich pkg.m417:32
Aylaok; I didn't have pkg-config installed17:39
viricAnyone knows if I can use 'perf' to know how much program latency is caused by ram access?18:23
viricin the pc world.18:23
viricI've a noisy pc power supply19:23
viricI plan to set a resistor in parallel with the fan, to slow it down19:24
viricbad idea?19:24
pangdepends if you meant parallel when you said parallel19:57
viricno, serial with the fan20:21
viricfun, I really wrote parallel20:22
pangwell, if you add enough resistors in parallel you'll get there eventually :P20:35
pangbut seriously, yeah, a resistor in series will do the trick20:36
viricI added (two in parallel) in series to the fan.20:37
viricto heat less.20:37
qi-bot[commit] Werner Almesberger: fisl2012/: last fixes and a bit of trimming (master) http://qi-hw.com/p/wernermisc/c07162920:49
--- Sat Jul 28 201200:00

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