[beagleboard] Re: Beaglebone keeps shutting down when trying to drive a motor
Well, I've overcome the problem. I was using a GPIO as GND to the ESC. This was convenient since those pins are next to each other. Once I used true GND, then the problem went away. But why would using a GPIO as a GND cause a shutdown? I know it will restrict the amount of current sinked due to having to flow through an extra FET. On Saturday, May 10, 2014 9:38:55 PM UTC-7, Uncle Joe wrote: Help, I'm struggling to drive a simple ESC and brushless motor combination with the Beaglebone. I've already spent 1/2 a day figuring out the right arming sequence (caused by a +- 0.01 ms error in timing). But once I arm the ESC, the Beaglebone shuts off immediately. Most of the time, it shuts off right when it starts spinning up. Sometimes it even shuts off on one of the beeps the motor makes indicating the ESC is arming. Here's my setup: Revolver Stubby motor || || 850W PSU =12V= ESC ===3.3V=== BeagleBone The PSU is an Antec 850 high current gamer. I've disabled over-current, over-voltage, and under-voltage protection on it, so the power draw can be alot (enough to make the lights flicker when the motor starts). The BeagleBone is powered by USB and should be buffered against surges caused by the motor PSU. What could be the problem? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] path of least resistance to Debian
From: William Hermans yyrk...@gmail.com Reply-To: beagleboard@googlegroups.com Date: Saturday, May 10, 2014 at 8:08 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] path of least resistance to Debian Well John, this is why people like me research hardware to use with various OSes, and distro's Unlike Windows that can almost have any hardware tossed at it ( whether it works well or not ), Linux, or specifically Debian in this case can be very finicky. Windows, really? Talking about a flaky OS and let¹s not talk about all those patches that I have to wait 5 or 15 minutes every day when I boot and then when I shutdown and all those reboots for upgrades. Windows is a piece of crap, period. I only use windows because some of the tools I use only run on Windows, but if I could ditch it, I would. I use OSX and everything just works. One of these days I¹m going to get the Linaro ARM cross compiler working and then I¹ll ditch Ubuntu as well. I dont recall what the topic was of the Video, but if you search youtube for Linus torvalds + F*** nVidia . . . Yeah lets just say you might be mildly amused. nVidia in the past and probably still does not play nice with the open source community. I changed from ATI because of driver issues and nVidia open source driver works find with Ubuntu. As far as the older kernel goes. Debian is known to move slower and more purposeful when compared to other distro;s. And as a result is generally very, very stable. However, because of this, also generally you need to pay attention to supported hardware. You are right about this, Debian is rock solid. I did try the testing repo and that looks pretty stable as well. My only hesitation is that I¹m not that familiar with all the repos I need and I don¹t have the time to research this right now. On Sat, May 10, 2014 at 2:59 PM, John Syn john3...@gmail.com wrote: From: William Hermans yyrk...@gmail.com Reply-To: beagleboard@googlegroups.com Date: Saturday, May 10, 2014 at 12:39 AM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] path of least resistance to Debian I can not disagree more with John on this last point. If you need a support system for Debian, use Debian as the support system. Also, stay away from using X, and Window managers if you can help it. I wasn¹t suggesting that anyone use Ubuntu for development, I was just describing my own setup. BTW, I did try Debian Wheezy and it didn¹t go very well. First my Nvidia GTX670 didn¹t work with the open source driver given that I have 3 x 30 inch Dell monitors. I was somewhat surprised that Debian is still using Linux Kernel V3.2 and I had to hunt around for so many repositories to get just the basic tools I need. I¹m no fan of Ubuntu, but for now it does the job for me and I¹m familiar with it. One more thing, developing on Windows is a nightmare given NTFS which is case insensitive. Regards, John Cross compiling from Windows does work, I've had this working since early on, but for most ( some ? ) people this is probably less than optimal. Definitely if you're using OSX as your desktop. On Fri, May 9, 2014 at 9:51 PM, John Syn john3...@gmail.com wrote: From: Brian Lloyd br...@lloyd.com Reply-To: beagleboard@googlegroups.com Date: Friday, May 9, 2014 at 6:51 PM To: beagleboard@googlegroups.com Subject: Re: [beagleboard] path of least resistance to Debian On Fri, May 9, 2014 at 5:42 PM, William Hermans yyrk...@gmail.com wrote: #1 Personally I would run from a uSD card to make sure it is what you want. Plus it doesnt hurt to run from the sd card, unless you do not have a uSD card + sd card adapter, and do not care to spend money on this. I have a 16GB uSD card to run from. Just wondering what the pros and cons are. Seems that the cons are worry that the eMMC will reach its write limit. I don't think that will be an issue for my application as I intend to use the BBB as an embedded system. (See below.) #2 I'll defer to someone else, as I am not a MAC person. Mac is just FreeBSD once you are in the shell (for the most part). There are worse places to be. ;-) There are some incompatibilities with OSX, but if you use ³MacPort² or ³HomeBrew² or ³Fink² to get the GNU tool versions. Since the GNU version are the same as Debian or Ubuntu, the same instructions will work on Mac. #3 NO idea where you got this impression. All the instructions I've seen are *NIX based, and I *DO* personally run Windows for my own desktop environment. I couldn't find any instructions other than for doing it from Windows until I was pointed to the Adafruit site. #4 You would have to boot up via uSD to write out the eMMC I believe. I now have Debian running from the uSD card and it is working just peachy. Attempts to copy the eMMC version to the eMMC didn't work but I only want that as a backup to the uSD. Eventually I will probably want to run from eMMC when
[beagleboard] BeagleBoard-xm does not show captured image
Hi, I am designing system to detect Eye blink using OpenCV on Beagle board xm.code can execute efficiently on laptop but unable to show web cam's output on screen. It can print text message (mentioned in code )on terminal. but unable to show as input video string. can any body please help me? *Is *problem with my code or with my board ? and How can I solve it? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Re: Beaglebone keeps shutting down when trying to drive a motor
It all depends on what the ESC current is. The current spec for GPIO is not a suggestion, but an absolute maximum value; if you exceed it, all bets are off (reset is actually a polite thing to do---permanent pin buffer damage can also happen, as well as wider damage to the chip). On Sun, May 11, 2014 at 2:32 AM, Uncle Joe yzhang1...@gmail.com wrote: Well, I've overcome the problem. I was using a GPIO as GND to the ESC. This was convenient since those pins are next to each other. Once I used true GND, then the problem went away. But why would using a GPIO as a GND cause a shutdown? I know it will restrict the amount of current sinked due to having to flow through an extra FET. On Saturday, May 10, 2014 9:38:55 PM UTC-7, Uncle Joe wrote: Help, I'm struggling to drive a simple ESC and brushless motor combination with the Beaglebone. I've already spent 1/2 a day figuring out the right arming sequence (caused by a +- 0.01 ms error in timing). But once I arm the ESC, the Beaglebone shuts off immediately. Most of the time, it shuts off right when it starts spinning up. Sometimes it even shuts off on one of the beeps the motor makes indicating the ESC is arming. Here's my setup: Revolver Stubby motor || || 850W PSU =12V= ESC ===3.3V=== BeagleBone The PSU is an Antec 850 high current gamer. I've disabled over-current, over-voltage, and under-voltage protection on it, so the power draw can be alot (enough to make the lights flicker when the motor starts). The BeagleBone is powered by USB and should be buffered against surges caused by the motor PSU. What could be the problem? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Audio Cape and Debian
Well, what ever I did, I fixed when I only disabled BB-BONELT-HDM (rather than both). Things are working well now. Thanks so much for the help. On Saturday, May 10, 2014 6:28:42 PM UTC-4, john3909 wrote: From: erg edros...@gmail.com javascript: Reply-To: beagl...@googlegroups.com javascript: Date: Saturday, May 10, 2014 at 11:08 AM To: beagl...@googlegroups.com javascript: Subject: Re: [beagleboard] Audio Cape and Debian getting closer but not quite there. To get the version information lsb_release -a return root@beaglebone:~# lsb_release -a No LSB modules are available. Distributor ID: Debian Description:Debian GNU/Linux 7.4 (wheezy) Release:7.4 Codename: wheezy Step 1 copy the audio device tree overlay (source) to /lib/firmware Step 2 copile the device tree overlay - good instructions here https://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree?view=all#compiling-an-overlay dtc -O dtb -o BB-BONE-AUDI-02-00A0.dtbo -b 0 -@ BB-BONE-AUDI-02-00A0.dts Step 3 export SLOTS=/sys/devices/bone_capemgr.*/slots echo BB-BONE-AUDI-02 $SLOTS This will produce an error -bash: echo: write error: File exists issue the command dmesg to see what kind of error this causes 666.089997] bone-capemgr bone_capemgr.9: slot #7: 'Override Board Name,00A0,Override Manuf,BB-BONE-AUDI-02' [ 666.090265] bone-capemgr bone_capemgr.9: slot #7: Requesting part number/version based 'BB-BONE-AUDI-02-00A0.dtbo [ 666.090319] bone-capemgr bone_capemgr.9: slot #7: Requesting firmware 'BB-BONE-AUDI-02-00A0.dtbo' for board-name 'Override Board Name', version '00A0' [ 666.097465] bone-capemgr bone_capemgr.9: slot #7: dtbo 'BB-BONE-AUDI-02-00A0.dtbo' loaded; converting to live tree [ 666.098183] bone-capemgr bone_capemgr.9: slot #7: BB-BONE-AUDI-02 conflict P9.31 (#5:BB-BONELT-HDMI) [ 666.107973] bone-capemgr bone_capemgr.9: slot #7: Failed verification This error state there is a conflict with BB-BONELT-HDMI need to disable that nano /boot/uboot/uEnv.txt optargs=capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN Remove the # from in front of this line Audio now works BUT *The sd card is no longer there. * What I would really like is for the SD card AND audio to work. BTW, you only need to disable BB-BONELT-HDMI. BB-BONELT-HDMIN will not conflict with your audio cape. I can only imagine that you must have some typo in uEnv.txt, because nothing you did will affect the SDCard. Maybe you should recreate your SDCard and update the uEnv.txt file on the boot partition of the SDCard. Regards, John Again - thanks for the help, On Saturday, May 10, 2014 1:09:10 AM UTC-4, john3909 wrote: From: erg edros...@gmail.com Reply-To: beagl...@googlegroups.com Date: Friday, May 9, 2014 at 5:29 PM To: beagl...@googlegroups.com Subject: Re: [beagleboard] Audio Cape and Debian I appreciate the response - but how in the world do you install a device tree? Been searching all over the place and find billions of references to how to compile one, but struggling with what to do with the one that is already compiled. Also - the very limited docs seem to indicate this is already installed The current Debian images have the required patches and will play audio normally. there are zero other docs to help someone that just wants to use this rather than become a linux guru. Since you did not specify your kernel version, it is hard to respond. However, assuming you are using V3.8.13, do the following: Make sure the compiled BB-BONE-AUDI-02-00A0.dtbo file is installed under the /firmware folder export SLOTS=/sys/devices/bone_capemgr.*/slots echo BB-BONE-AUDI-02 $SLOTS If you want to enable the Audio DT permanently, add it to your uEnv.txt file. Regards, John On Thursday, May 8, 2014 10:40:19 PM UTC-4, john3909 wrote: From: erg edros...@gmail.com Reply-To: beagl...@googlegroups.com Date: Thursday, May 8, 2014 at 5:26 PM To: beagl...@googlegroups.com Subject: [beagleboard] Audio Cape and Debian I know little of linux and not that up on audio, but in the process of building an app that uses both. (Java app that works fine in windows). I just bought the audio cape and a bit surprised at the lack of any docs or links to how-to. In fact, not really sure which is the mic in and headphone out. I'm sure this thing works, but not sure what I need to do to get it working. Ive tried aplay, alsa, alsamixer and nothing seems to know the board is present. Using debian for the beagle board Is there some kind of configuration that is needed to make this work? Or, is there any docs for this board (Rev B) that explain what needs to be done? Appreciate any help. aplay -vv file.wav Seems to do something, but no audio from either of the ports. What kernel version are you using? You need to
[beagleboard] Re: Bone VDD_3V3EXP Disable Issues
On Friday, January 31, 2014 4:34:51 AM UTC+11, Brad Andersen wrote: An update: For the A6 (Beaglebone Black) version, I connected U4 pin 1 (enable) back to VDD_3V3AUX (same as A5C). It now shuts down correctly while on battery. This was verified on two A6 BBB. The mystery is what causes the VDD_3V3A to hang up on the A6 version when shutting down while on battery. Brad, Thank you for this post. I thought I was going madder than usual when the production units wouldn't turn off but the prototypes did! all it required was lifting pin 1 of U4 and soldering a wire-wrap wire to the power led anode (side furthest from the edge of the board) you have as they say saved my bacon Best Wishes, Darren -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: Audio Cape and Debian
Hi, where did you buy it? How much did it cost? Cheers On Friday, May 9, 2014 1:26:27 AM UTC+1, erg wrote: I know little of linux and not that up on audio, but in the process of building an app that uses both. (Java app that works fine in windows). I just bought the audio cape and a bit surprised at the lack of any docs or links to how-to. In fact, not really sure which is the mic in and headphone out. I'm sure this thing works, but not sure what I need to do to get it working. Ive tried aplay, alsa, alsamixer and nothing seems to know the board is present. Using debian for the beagle board Is there some kind of configuration that is needed to make this work? Or, is there any docs for this board (Rev B) that explain what needs to be done? Appreciate any help. aplay -vv file.wav Seems to do something, but no audio from either of the ports. thx e -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Power switch for Beaglebone?
Is there a simple passive switch I can put between the Beaglebone White and its power supply so I can switch it on and off without unplugging it? - Grant -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] BeagleBoard Data Acquisition Platform
Aah now I see. Using multiple channels to search for signals buried in noise. Like the phase array of antennas used in the WERA radar system: http://www.aslenv.com/WERA.html Whereas my own desires are based on the Red Pitaya: http://redpitaya.com A lovely bit of kit, if you can spare $500+ and don't mind Yet Another ARM Processor [built into the FPGA chip]... For more modest requirements, this should be do-able as an extension to the Beaglebone series. A quick check of TI's selection table found the ADS4145http://www.ti.com/product/ads4145and ADS4245 [1 and 2 channel version, 125M, 14-bit]. Analog Devices have the AD9648-125http://www.analog.com/en/analog-to-digital-converters/ad-converters/ad9648/products/product.html, and Linear Technology have the LTC2145-14http://www.linear.com/product/LTC2145-14. Feel free to look them up if you're curious about how they work: I consider much of that magic smoke As for WHY I want one - primarily, RF signal analysis. 120 Msample/sec lets you grab from DC to 30MHz, with simple filtering. You can also monitor FM bands [88-108MHz] which fall in the 2nd Nyquist sample zone and get reflected down to 12 - 32 MHz Oh, and amateur radio and weather satellites, in the band 140 - 150 MHz, can be under sampled at 25 - 30MHz. Not to mention being able to cover 40MHz of bandwidth, such as WiFi, by adding a mixer / downconverter. It's all Software Defined Radio, or SDR. There are $20 USB dongles, but they lack the frequency range and bandwidth I'm talking about. Regards, -- Alan [SA-Penguin] -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
RE: [beagleboard] Power switch for Beaglebone?
Like a FET or a Solid State Relay ?? http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book -Original Message- From: beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] On Behalf Of Grant Sent: Sunday, May 11, 2014 11:18 AM To: beagleboard@googlegroups.com Subject: [beagleboard] Power switch for Beaglebone? Is there a simple passive switch I can put between the Beaglebone White and its power supply so I can switch it on and off without unplugging it? - Grant -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. - No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4577 / Virus Database: 3931/7474 - Release Date: 05/11/14 - No virus found in this message. Checked by AVG - www.avg.com Version: 2014.0.4577 / Virus Database: 3931/7433 - Release Date: 05/02/14 Internal Virus Database is out of date. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Power switch for Beaglebone?
Like a FET or a Solid State Relay ?? http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book I'm not sure. I'm just looking for a small component I can plug between the Beaglebone and power cable without any soldering. - Grant Is there a simple passive switch I can put between the Beaglebone White and its power supply so I can switch it on and off without unplugging it? - Grant -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: How to find DDR physical address for passing data to/from pruss?
A shortened version of this question, which I really want to understand for this specific project and as general learning for use of Linux in embedded systems: What is the correct way to correctly use memory in userspace to access registers and memory used by device drivers (specifically the PRU in this case)? Is the example provided correct, both the app_loader helper code and/or the example applications? They seem to be inconsistent with one another? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] help remove virtual terminals in debian
Hi! I use Beagleboard with installed bare Debian from RCN. My main application is in Qt and it works as expected but the virtual terminal is very disturbing. When the system boots I can see a number of annoying messages on a display and that is why I want to remove virtual terminal forever. I tried Ubuntu nano and Debian and everywhere virtual terminals exist. Please advise something -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] help remove virtual terminals in debian
On Sun, May 11, 2014 at 2:36 PM, Maxim Podbereznyy lisar...@gmail.com wrote: Hi! I use Beagleboard with installed bare Debian from RCN. My main application is in Qt and it works as expected but the virtual terminal is very disturbing. When the system boots I can see a number of annoying messages on a display and that is why I want to remove virtual terminal forever. I tried Ubuntu nano and Debian and everywhere virtual terminals exist. Please advise something First start by adding quiet to your bootargs, along with removing the console=ttyXYZ reference, should quiet down your terminal. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] help remove virtual terminals in debian
Robert, I don't want to remove the console (I think removing console=ttyXY from bootargs will break the console at all), just the virtual terminals have just tried to add quiet and got rid off the system boot log and the fancy virtual terminal on the display still appears. I need to remove all text from the display, just GUI is needed on it 2014-05-11 23:38 GMT+04:00 Robert Nelson robertcnel...@gmail.com: On Sun, May 11, 2014 at 2:36 PM, Maxim Podbereznyy lisar...@gmail.com wrote: Hi! I use Beagleboard with installed bare Debian from RCN. My main application is in Qt and it works as expected but the virtual terminal is very disturbing. When the system boots I can see a number of annoying messages on a display and that is why I want to remove virtual terminal forever. I tried Ubuntu nano and Debian and everywhere virtual terminals exist. Please advise something First start by adding quiet to your bootargs, along with removing the console=ttyXYZ reference, should quiet down your terminal. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] help remove virtual terminals in debian
On Sun, May 11, 2014 at 2:46 PM, Maxim Podbereznyy lisar...@gmail.com wrote: Robert, I don't want to remove the console (I think removing console=ttyXY from bootargs will break the console at all), just the virtual terminals have just tried to add quiet and got rid off the system boot log and the fancy virtual terminal on the display still appears. I need to remove all text from the display, just GUI is needed on it You it should be safe to remove console=tty0 then you won't get any boot text on your lcd/dvi screen Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] help remove virtual terminals in debian
here is the cmdline: console=ttyO2,115200n8 quiet root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc dvimode=hd720 what should I remove? 2014-05-11 23:48 GMT+04:00 Robert Nelson robertcnel...@gmail.com: On Sun, May 11, 2014 at 2:46 PM, Maxim Podbereznyy lisar...@gmail.com wrote: Robert, I don't want to remove the console (I think removing console=ttyXY from bootargs will break the console at all), just the virtual terminals have just tried to add quiet and got rid off the system boot log and the fancy virtual terminal on the display still appears. I need to remove all text from the display, just GUI is needed on it You it should be safe to remove console=tty0 then you won't get any boot text on your lcd/dvi screen Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] help remove virtual terminals in debian
done! https://help.ubuntu.com/community/RemoveTTY 2014-05-12 0:04 GMT+04:00 Maxim Podbereznyy lisar...@gmail.com: here is the cmdline: console=ttyO2,115200n8 quiet root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait fixrtc dvimode=hd720 what should I remove? 2014-05-11 23:48 GMT+04:00 Robert Nelson robertcnel...@gmail.com: On Sun, May 11, 2014 at 2:46 PM, Maxim Podbereznyy lisar...@gmail.com wrote: Robert, I don't want to remove the console (I think removing console=ttyXY from bootargs will break the console at all), just the virtual terminals have just tried to add quiet and got rid off the system boot log and the fancy virtual terminal on the display still appears. I need to remove all text from the display, just GUI is needed on it You it should be safe to remove console=tty0 then you won't get any boot text on your lcd/dvi screen Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- LinkedIn - http://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/mentorel.company -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: Beginner PRU Issue
You have responded to this at a fortuitous time. I JUST got it working on an example code. - I edited the device tree turning on the PRUSS system and turning off the status lights - modprobe uio_pruss - sudo ./[program name] and boom it started blinking just as it should. Now it doesn't exit properly and I will have to play with the clear_event() to see if that's the root but I'm very happy with it right this second. On Sunday, May 11, 2014 3:38:36 PM UTC-5, CEB wrote: It stopped segfaulting when I sudoed the program so I copied in the whole code. The compiler complains that there aren't enough parameters for prussdrv_pru_clear_event. The header does have two parameters but all other TI documentation only has one. If I just throw a zero as the second parameter it will run but does nothing because who knows what I'm doing. - show quoted text - In several examples I see:prussdrv_pru_clear_event (PRU_EVTOUT_0, PRU0_ARM_INTERRUPT); I'm trying to get a feel for this too. Maybe this will help. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: Audio Cape and Debian
I got mine from http://boardzoo.com/index.php/new-products/bone-audio.html#.U2_-VFd7_uw boardzoo.com Cost $29.95 Few other notes: I will likely need to modify this board to include an audio amp to drive a speaker and an on-board mic. I tried to play audio directly from Java - don't think it's gonna work without some indepth knowledge of the Linux and the Java audio. My most likely solution will be to simply execute an external program (most likely madplay). aplay will only play wav files, I would rather use mp3 due to space. I've installed maplay using apt-get install madplay (i've tried mpg123 - but didn't seem to work and did not want to fight that battle Good luck. I know very little of Linux, so this was a bit frustrating form me, I hope my notes help I'm not entirely sure yet, but think I will execute (from Java) lame to record. On Sunday, May 11, 2014 11:06:25 AM UTC-4, Luís Costa wrote: Hi, where did you buy it? How much did it cost? Cheers On Friday, May 9, 2014 1:26:27 AM UTC+1, erg wrote: I know little of linux and not that up on audio, but in the process of building an app that uses both. (Java app that works fine in windows). I just bought the audio cape and a bit surprised at the lack of any docs or links to how-to. In fact, not really sure which is the mic in and headphone out. I'm sure this thing works, but not sure what I need to do to get it working. Ive tried aplay, alsa, alsamixer and nothing seems to know the board is present. Using debian for the beagle board Is there some kind of configuration that is needed to make this work? Or, is there any docs for this board (Rev B) that explain what needs to be done? Appreciate any help. aplay -vv file.wav Seems to do something, but no audio from either of the ports. thx e -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: path of least resistance to Debian
Question_1: I personally like to run from the MicroSD. The eMMC is there if something goes wrong on the MicroSD and I need a quick edit on the MicroSD to get back running. An 8GB MicroSD card is very inexpensive these days and it's easier to just pop the MicroSD in a reader and ( dd if=/dev/MyMicroSD of=/MyBackup.img ) to create a backup or duplicate cards using DD in the reverse direction from my backup. One note. Just to keep the MicroSD from writing too much when I am running, I placed this mountpoint in the [ /etc/fstab ] and write all my web stuff there. This way all my frequently written stuff goes there, it's temporary anyway but written frequently and ram is a good place for it. tmpfs /ramfstmpfs defaults,size=20m 0 0 -Bruce- On Friday, May 9, 2014 6:28:28 PM UTC-4, Brian Lloyd wrote: I am fairly certain that this has been answered but I have spent the last two hours perusing the Wiki, the website, and the forums looking for a definitive path to move my BBB from Angstrom to Debian. I am left with some questions which I am pretty certain someone has already answered but I still need pointers. 1. Is it better to run Debian from MicroSD or from the eMMC? 2. My native OS environment is MacOS. I have decompressed both Debian images on my Mac. For the MicroSD it seems the easy way to write the image is with dd using a 512-byte blocksize (one sector), right? 3. Is there a way to write the eMMC image from MacOS? I'd rather not have to boot up Windows if I can avoid it. (After all, we are trying to run linux and having to run Windows in order to do maintenance on a Linux system just seems ... wrong.) 4. Is there a way to write the eMMC image from the running BBB? Seems that maybe I get it running from MicroSD and then rewrite the eMMC. Thank you. Brian -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Re: Audio Cape and Debian
From: erg edross15...@gmail.com Reply-To: beagleboard@googlegroups.com Date: Sunday, May 11, 2014 at 3:58 PM To: beagleboard@googlegroups.com Subject: [beagleboard] Re: Audio Cape and Debian I got mine from http://boardzoo.com/index.php/new-products/bone-audio.html#.U2_-VFd7_uw boardzoo.com Cost $29.95 Few other notes: I will likely need to modify this board to include an audio amp to drive a speaker and an on-board mic. Use amixer to modify the volume. Start with arecord and aplay to confirm that your audio is working before using java. If you have a microphone, play music from say your iPhone or Android device. arecord -r 44100 -c 1 -f S16_LE -t wav -vv -d 25 example.wav aplay example.wav Regards, John I tried to play audio directly from Java - don't think it's gonna work without some indepth knowledge of the Linux and the Java audio. My most likely solution will be to simply execute an external program (most likely madplay). aplay will only play wav files, I would rather use mp3 due to space. I've installed maplay using apt-get install madplay (i've tried mpg123 - but didn't seem to work and did not want to fight that battle Good luck. I know very little of Linux, so this was a bit frustrating form me, I hope my notes help I'm not entirely sure yet, but think I will execute (from Java) lame to record. On Sunday, May 11, 2014 11:06:25 AM UTC-4, Luís Costa wrote: Hi, where did you buy it? How much did it cost? Cheers On Friday, May 9, 2014 1:26:27 AM UTC+1, erg wrote: I know little of linux and not that up on audio, but in the process of building an app that uses both. (Java app that works fine in windows). I just bought the audio cape and a bit surprised at the lack of any docs or links to how-to. In fact, not really sure which is the mic in and headphone out. I'm sure this thing works, but not sure what I need to do to get it working. Ive tried aplay, alsa, alsamixer and nothing seems to know the board is present. Using debian for the beagle board Is there some kind of configuration that is needed to make this work? Or, is there any docs for this board (Rev B) that explain what needs to be done? Appreciate any help. aplay -vv file.wav Seems to do something, but no audio from either of the ports. thx e -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Beaglebone Camera Selection
Hey guys, New here. I am currently doing my final project at university and cannot decide on a camera to use. The camera is to be used to navigate the robot and detect blocks red, green, and blue. The previous person to work on the project sourced the following camera and I am currently debating whether or not to use it. http://store.linksprite.com/linksprite-jpeg-color-camera-serial-uart-interface-ttl-level/ My question is really should I be going with a TTL level serial communication camera or would it be easier/better to go with a usb camera like most people have with their robots. Cheers in advance, Jameel -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] BeagleBoard Data Acquisition Platform
On Sun, May 11, 2014 at 11:33 AM, sa_Penguin soupi...@gmail.com wrote: As for WHY I want one - primarily, RF signal analysis. 120 Msample/sec lets you grab from DC to 30MHz, with simple filtering. You can also monitor FM bands [88-108MHz] which fall in the 2nd Nyquist sample zone and get reflected down to 12 - 32 MHz Oh, and amateur radio and weather satellites, in the band 140 - 150 MHz, can be under sampled at 25 - 30MHz. Not to mention being able to cover 40MHz of bandwidth, such as WiFi, by adding a mixer / downconverter. It's all Software Defined Radio, or SDR. There are $20 USB dongles, but they lack the frequency range and bandwidth I'm talking about. The dongles typically do 60MHz-1700MHz--I doubt that you'll do better by hooking an ADC to the BBB. The dongles do it by having a front-end tuner and specialized signal processor. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Re: Atlantic Canada Timezone
In Debian, I find it inside usr/share/zoneinfo/Canada/ On Sunday, 11 May 2014 00:53:46 UTC+2, mike rankin wrote: I'm having trouble finding the Atlantic Canada Timezone for setting up the time being pulled over ethernet from the instructions at: http://www.circuidipity.com/getting-started-with-beaglebone-black.html Inside usr/share/zoneinfo/ I cannot find the Atlantic timezone. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
