Re: [beagleboard] 4.1.16-bone18 #26 PREEMPT & CPU stuck for 90 second

But the CPU is stuck for 90 second, is that normal ? Micka, Le mar. 1 mars 2016 à 08:56, John Syne a écrit : > It is not a bug. > > https://www.kernel.org/doc/Documentation/RCU/stallwarn.txt > > Regards, > John > > > > > On Feb 29, 2016, at 11:15 PM, Micka wrote: > > Hi, > > I run 3 process do

Re: [beagleboard] 4.1.16-bone18 #26 PREEMPT & CPU stuck for 90 second

It is not a bug. https://www.kernel.org/doc/Documentation/RCU/stallwarn.txt Regards, John > On Feb 29, 2016, at 11:15 PM, Micka wrote: > > Hi, > > I run 3 process doing serial test ( write on ttyO with a 5ms sleep between > eac

[beagleboard] 4.1.16-bone18 #26 PREEMPT & CPU stuck for 90 second

Hi, I run 3 process doing serial test ( write on ttyO with a 5ms sleep between each send ) and i got this yesterday : [28744.255809] INFO: rcu_preempt self-detected stall on CPU [28744.255852] 0: (1 ticks this GP) idle=af5/1/0 softirq=1389832/1389832 fqs=0 [28744.255862] (t=9593 jiffies g=8807

[beagleboard] Re: can't boot from eMMC; can't flash eMMC

I think I should trash this BBB. Tonight while installing packages with apt-get there were a few errors while decompressing downloaded packages. This was fixable, but still ... generally shouldn't happen. Also, while building libvpx from sources there were two internal compiler errors. The

Re: [beagleboard] BBB enable i2c2 on chipsee debian 3.8.13 kernel

thank robert! i install this image https://rcn-ee.com/rootfs/bb.org/testing/2016-02-21/lxqt-4gb/bone-debian-8.3-lxqt-4gb-armhf-2016-02-21-4gb.img.xz update & upgrade git clone https://github.com/beagleboard/bb.org-overlays cd ./bb.org-overlays ./dtc-overlay.sh ./install.sh dtc --version Versi

Re: [beagleboard] Root NFS

You don’t have to delete connman for NFS to work. Just tell connman to stop managing eth0. This is required when using systemd. Regards, John > On Feb 29, 2016, at 2:42 PM, eli.jo...@gmail.com wrote: > > > Wow. > > I was dealing with issues trying to boot an NFS exported nfsroot with > A

[beagleboard] can't boot from eMMC; can't flash eMMC

The BBB that I was working on 2-3 weeks ago seemingly died. All attempts to boot it ended with various unusual led patterns, e.g. all 4 on for maybe a minute, then off, then all 4 on, and so on ... or, alternatively, led2 on permanently, or, alternatively, none at all. I tried reflashing it w

Re: [beagleboard] Re: Driver for Adafruit BMP280 Barometric Pressure & Temperature Sensor

On 02/29/2016 08:28 PM, AV8TOR wrote: > Update: > I anticipate someone will want to know how the sensor is interfaced: > Again, using the BMP085 as a reference for my BMP280 > The actual BMP280 pinout BMP280 Pinout >

[beagleboard] Re: Driver for Adafruit BMP280 Barometric Pressure & Temperature Sensor

Update: I anticipate someone will want to know how the sensor is interfaced: Again, using the BMP085 as a reference for my BMP280 The actual BMP280 pinout BMP280 Pinout the below steps snippe

[beagleboard] Driver for Adafruit BMP280 Barometric Pressure & Temperature Sensor

Hello, My first time ever using a BB platform. ID10T newbie. I'm trying to use the board along with a BMP280 sensor for Pressure and Temperature. I'm having no skill or luck with it. I've sprungboard off of a post showing how to implement a driver for the BMP085 which is an earlier version of t

[beagleboard] Re: Root NFS

Wow. I was dealing with issues trying to boot an NFS exported nfsroot with Angstrom Linux.. and was having this exact same issue. It would hang after booting to the login and display: nfs: server not responding, still trying removing /lib/systemd/system/conman.service does fix this problem.

[beagleboard] Re: BBBAndroid: AOSP 4.4.4 (KitKat) with 3.8 kernel

On Sunday, September 28, 2014 at 6:44:24 PM UTC+3:30, Andrew Henderson wrote: > > Hello all. I have released a new port of Android for the BBB. This > version uses AOSP 4.4.4 (KitKat) and the 3.8 Linux kernel. I have made > build instructions and a pre-made image available at > http://www.bb

Re: [beagleboard] Cosmic rays measured with BeagleBone-based data acquisition

Thanks for sharing. That sounds very exciting! I'm from Batavia, Illinois where Fermilab is and believe Open Source Hardware is a great fit for physics exeperiments. Is there a specific URL that talks about your project that uses the BBB? Maybe a repo with the source code and/or design files (

[beagleboard] Cosmic rays measured with BeagleBone-based data acquisition

Hello everyone: last week we started a website CosmicRayNet.net showing a measurement of cosmic ray mu-meson capture-and-decay. We developed an instrument which is performing signal digitization and data acquisition of such rare decay events. The instrument is using the BeagleBone Black, upon wh

Re: [beagleboard] BBB enable i2c2 on chipsee debian 3.8.13 kernel

On Mon, Feb 29, 2016 at 12:45 PM, Damian Nahmiyas wrote: > hi! i need some help to enable pins P9 19,20 to use i2c2 with te precompiled > kernel of chipsee screen.I dont found the cape manager: > > /sys/devices/bone_capemgr.8/slots: No such file or directory The people who designed the chipsee ca

[beagleboard] BBB enable i2c2 on chipsee debian 3.8.13 kernel

hi! i need some help to enable pins P9 19,20 to use i2c2 with te precompiled kernel of chipsee screen.I dont found the cape manager: /sys/devices/bone_capemgr.8/slots: No such file or directory thanks! -- For more options, visit http://beagleboard.org/discuss --- You received this message bec

Re: [beagleboard] What is the purpose of eMMC_RSTn?

That is what it is there for. However, it does not work until you enable it in the eMMC itself. Gerald On Mon, Feb 29, 2016 at 10:30 AM, Geoff L. wrote: > On the BBB there is a gpio that is connected through a open collector > buffer to the emmc reset line. It seems that this is there for the

Re: [beagleboard] Re: BBB USB0 change from client to host

Hi , I would like to know if you have the solution to convert this USB0 port to periferical port. I have the same problem like you. Thanks in advanced. 2015-11-05 14:24 GMT+01:00 Ison Thomas : > Hi Robert, > > I am trying to acheive a similar goal here. I want to change my USB0 to > host and U

[beagleboard] What is the purpose of eMMC_RSTn?

On the BBB there is a gpio that is connected through a open collector buffer to the emmc reset line. It seems that this is there for the purpose of allowing capes to use the processor pins that are otherwise connected to the eMMC, by holding the eMMC in reset.I'm considering removing featur

[beagleboard]: how to flash only uboot on emmc

Hi, I am building uboot from source with robert nelson's instructions here: https://eewiki.net/display/linuxonarm/BeagleBone+Black But I do not want to upgrade emmc with rootfs and kernel... only uboot I want to upgrade. Is it possible to generate flasher image just for uboot on BBB ? regards