I am now dealing with i2c.
I'm using OV7670 (CMOS camera) .
I have connected to the pin ( P9_19 , P9_20) but P9_19 is not working ( SCL
) ( clock is not making . )
why not working ??
Then I command i2cdetect -r -y 1 and i2cdump -y 1 0x21
0x21 is slave address .
you see in the picture
Hey All,
I purchased recently 7 beaglebone Black Revision C. I have been working
with older ones for more than an year now.
But this time when I plugged USB cable from laptop and 5V DC adaptor both,
then all of a sudden it stopped working.
And now none of the 3 are working. I am startled why it
On Thursday, July 2, 2015 at 1:45:03 AM UTC+9, LW wrote:
Have you read this link, which covers almost all the information you need:
http://downloads.ti.com/sitara_android/esd/TI_Android_DevKit/TI_Android_JB_4_2_2_DevKit_4_1_1/index_FDS.html
And on how to setup and build the Android JB4.2.2
Hello.
I wanna use my 7inc hdmi touch screen
but my board's screen resolution is not fine.
i did search and find one solution : Change kernel of your OS
but i don't know *WHERE* and *HOW* can i change...
i read All guides on TI page. but there is no solution what i need
plz let me know where
Robert,
I now have the console image working with usb over ethernet with both Linux
and Windows PCs.
The change I had to make was to remove udhcpd and its conf files and then
install dnsmasq
#apt-get remove udhcpd
#rm /etc/default/udhcp*
#apt-get install dnsmasq
#reboot
This change then
Thanks! That makes a lot of sense now. I figured out I have to open export
as write only which agrees with the permissions you showed. I've moved
GPIOs to export while the board was running using the command line, so I
think its okay.
So changing my code subsituting O_WRONLY for O_RDWR and now
Hello there,
I am struggling with this problem for very long now, but it got really
serious just now after I noticed that I also cannot use scripts. Here is
the case:
I have an embedded Qt application crosscompiled that runs on BeagleBone
Black. It works Ok, but one thing- It doesnt accept
Hi Robert
#summary, simplified uEnv.txt with
uname_r=4.1.0-bone9
client_ip=192.168.1.111
server_ip=192.168.1.115
gateway=192.168.1.254
Thanks again. Awesome. Those key changes certainly make a difference. It looks
like I'm now booting via TFTP. Just
Fortunately most laser pointer are powered by 3V, so you can just use a FET and
one of the IO ports.
If you need a schematic, just respond to this post J
From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On
Behalf Of Kanika Saraswat
Sent: Wednesday, July 01, 2015
hi all,
i have developed point gray flycapture camera preview application in qt5.
it is working in ubuntu. but it is not working on beaglebone black giving
error that :
*grab loop has an error : Isochronous image transfer is not started. *
since the camera preview application from its sdk is
I'm sincerely sorry if this is a dupe, but I cannot find the note I
intended to post an hour ago...
I have followed the instructions
here: http://elinux.org/CircuitCo:Audio_Cape_RevB
I compiled the given dts file to obtain the dtbo. I have disabled HDMI
(and HDMIN). And I've added the new
you need to install the packages -lcairo, -lgmodule-2.0... and others...
El domingo, 10 de noviembre de 2013, 18:48:03 (UTC-3), RedRock escribió:
I am trying to cross compile Lazarus (Free Pascal Compiler) for BeagleBone
Black.
Basically, I followed below tutorial..
I recently upgraded to Arch Linux Kernel v 4.1 and I'm trying to enable the
UARTs. Tried the instructions for uEnv.txt but didn't work and couldn't get
the device tree to work either. Can someone let me know how to enable the
UART? Thanks!
-leo
--
For more options, visit
I don't have an Audio Cape (everywhere is out of stock) but I just want to
test the set up as if I did.
I ran all steps as given by the instructions
(http://elinux.org/CircuitCo:Audio_Cape_RevB) including installing a new DT
overlay,
disabling HDMI and adding to the slots file.
Then I try
The way we do this is as follows:
The BBB is monitoring processes and sending data via json to a web server,
where it is displayed.
The BBB is behind a firewall, so it must be the one to initiate the
communication. The BBB ultimately is the boss here, not the server.
When there is no data
Were the BBB plugged into anything else at the time? Did they have anything
connected to the I/O ports?
My guess is that you have a problem in the safety ground on either the
laptop or in the USB power supply,
or what the BBB I/O ports was connected to. Get out your voltmeter and
start
root@beaglebone:/home/debian# *echo 0 /sys/class/gpio/export*
root@beaglebone:/home/debian# l*s /sys/class/gpio/*
export gpio0 gpiochip0 gpiochip32 gpiochip64 gpiochip96 unexport
root@beaglebone:/home/debian# *echo 0 /sys/class/gpio/unexport*
root@beaglebone:/home/debian# *ls
DO also keep in mind that /sys/ is a pseudo file system. SO does not always
play by the same rules as disk based file systems.
On Thu, Jul 2, 2015 at 8:50 AM, William Hermans yyrk...@gmail.com wrote:
root@beaglebone:/home/debian# *echo 0 /sys/class/gpio/export*
root@beaglebone:/home/debian#
Robert,
A further update. I can now get the udhcpd implementation to work on
console image by applying a patch to
/opt/scripts/boot/autoconfigure_usb.sh. Patch is simply to use standard
location for updated udhcpd.conf rather than a /tmp one.
I'm assuming there was a reason that this was done. I
Any forward traction ?
On Thu, Jul 2, 2015 at 8:51 AM, William Hermans yyrk...@gmail.com wrote:
DO also keep in mind that /sys/ is a pseudo file system. SO does not
always play by the same rules as disk based file systems.
On Thu, Jul 2, 2015 at 8:50 AM, William Hermans yyrk...@gmail.com
Hi,
I am trying to install Ubuntu 13.04 eMMC flasher image on Beaglebone
black. However, the links for Ubuntu 13.04 eMMC flash image does not work.
Can anyone point me to a download link for the image? Has anyone
downloaded this image before?
Regards,
Mahesh Sarode
--
For more options,
*The spawned process inherits the real UID (and effective and saved UIDs)
from the parent. But here he needs root to write to the GPIO file.*
*This is really only a security issue if there are ever other users on the
box. Important security practices for a multiuser machine, yes, but for a
On Wednesday, July 1, 2015 at 3:19:27 PM UTC-6, William Hermans wrote:
debian@beaglebone:~$ *cat /sys/class/gpio/export*
cat: /sys/class/gpio/export: *Permission denied*
debian@beaglebone:~$ sudo *cat /sys/class/gpio/export*
cat: /sys/class/gpio/export: *Permission denied*
I just updated to Jessie and I noticed 2 strange issues.
Wondering if anyone else has either seen these issues or knows what's up.
Once I updated, I noticed 2 things weren't working anymore:
1. USB connection to BBB doesn't work. Windows doesn't even see it as a
mass storage, let alone the USB
On Thursday, July 2, 2015 at 7:37:17 PM UTC-6, William Hermans wrote:
*The spawned process inherits the real UID (and effective and saved UIDs)
from the parent. But here he needs root to write to the GPIO file.*
*This is really only a security issue if there are ever other users on
the
My kirnel bersion is 3.8.13 and I'm using Angstrom Linux
sudo is not command in Angstrom
how can i use python ?? LED is not working
2015년 5월 29일 금요일 오전 2시 10분 4초 UTC+9, Miguel Aveiro 님의 말:
Which kernel version are you using (just type: uname -a)?
If your are using the 3.14
Gerald and maybe Jason have the power to approve new users to post. No idea
when they'll get on, but do also keep in mind it's the 4th of July weekend(
possibly already started for some ) So you may have to wait until Monday.
On Thu, Jul 2, 2015 at 8:07 PM, jrbl...@colorado.edu wrote:
On
jrblack, also, you can mail me personally, and I'll forward, or just make a
new post on your behalf. Assuming I can not answer the question myself.
On Thu, Jul 2, 2015 at 9:07 PM, William Hermans yyrk...@gmail.com wrote:
Gerald and maybe Jason have the power to approve new users to post. No
#1
https://groups.google.com/forum/#!searchin/beagleboard/RNDIS|sort:date/beagleboard/T7N2xs7K0TU/u4XBZRfEVmMJ
Read the last few posts. In your case though, you *may* have to uninstall
older drivers to get g_multi or g_ether working. WIndows can be crazy that
way sometimes.
#2 I'm not sure of.
I ran all steps as given by the instructions
(http://elinux.org/CircuitCo:Audio_Cape_RevB) including installing a new DT
overlay, disabling HDMI and adding to the slots file.
Then I try speaker-test -D default:EVM and put an oscilloscope on pin
P9_28. No waveform comes out. This should be
On Thu, Jul 2, 2015 at 9:44 AM, Iain Hunter drhunte...@gmail.com wrote:
Robert,
A further update. I can now get the udhcpd implementation to work on console
image by applying a patch to /opt/scripts/boot/autoconfigure_usb.sh. Patch
is simply to use standard location for updated udhcpd.conf
The only solution I found is to downgrade the kernel, see:
http://archlinuxarm.org/forum/viewtopic.php?f=48t=8872
On Thursday, July 2, 2015 at 6:52:12 AM UTC-7, Leo Neumeyer wrote:
I recently upgraded to Arch Linux Kernel v 4.1 and I'm trying to enable
the UARTs. Tried the instructions for
I found out... it seems that the entire register files (maybe r0 to r29)
are written in the scratchpad bank and they must be read in the exact same
position.
That is, PRU 1 is loading data in R20, so PRU0 must also store R20.
Le jeudi 2 juillet 2015 13:39:54 UTC-3, Carlos Novaes a écrit :
Hello everyone.
I am facing a problem to use scratchpad to share data between PRU0 and PRU1.
On PRU1 I got:
*MOV R10, 1*
*XOUT 10, R10, 4*
*// some code that will trigger PRU0*
*// some other code to wait for PRU0 return signal*
*XIN 10, R20, 4*
*// some code to send R20 to shared data ram*
OK, the saga continues. We are getting close here, I am sure. I am getting a
TFTP boot and a NFS root file system.
One serious issue J I cannot log in! Both debian and root users fail. The
rfs is debain Jessie and I've cleared any root password stuff from
/etc/shadow
jevans@nfshost# cat
https://github.com/beagleboard/bb.org-overlays
On Jul 2, 2015 1:01 PM, Leo Neumeyer leoneume...@gmail.com wrote:
The only solution I found is to downgrade the kernel, see:
http://archlinuxarm.org/forum/viewtopic.php?f=48t=8872
On Thursday, July 2, 2015 at 6:52:12 AM UTC-7, Leo Neumeyer
Thank you Robert, isn't this for debian? I am using Arch.
-leo
On Thu, Jul 2, 2015 at 11:53 AM, Robert Nelson robertcnel...@gmail.com
wrote:
https://github.com/beagleboard/bb.org-overlays
On Jul 2, 2015 1:01 PM, Leo Neumeyer leoneume...@gmail.com wrote:
The only solution I found is to
On Thu, Jul 2, 2015 at 1:59 PM, Leo Neumeyer leoneume...@gmail.com wrote:
Thank you Robert, isn't this for debian? I am using Arch.
While correct, it's defaults to debian stuff, Arch usually add's our
bone patch, so your current kernel should meet the .config
requirements listed in the
Is it possible to write a bootloader that runs in the Trust Zone secure
zone ? I want to run custom code in secure mode.
--
For more options, visit http://beagleboard.org/discuss
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