Re: [beagleboard] Read from LV-Maxsonar-EZ0 using uart2
1) I'm using the 3.3V pin, so the voltage is acceptable in p9_22. 2) What do you mean by setttings, the fields when I export the pin? Or the pin mode? I think mine are ok, what should they be? 3) I tried many applications, python scripts, c scripts, minicom... On 5 November 2013 05:26, Maxim Podbereznyy lisar...@gmail.com wrote: 1) I would place a voltage translator or a simple voltage divider based on two resistors to reduce 5 volts to the acceptable 3.3V. 2) check the pinmux settings for that pin 3) what terminal application do you use to read data? Check the serial port parameters and don't forget to disable the hardware flow control if any 05 нояб. 2013 г. 3:55 пользователь Gustavo Oliveira gustavo.pinho...@gmail.com написал: Hi, thank you for quick reply, I'm using a BeagleBone and Ubuntu 12.04. I have the TX connected to p9_22, which is uart2 RX. On Monday, November 4, 2013 7:38:06 PM UTC, lisarden wrote: hi! what board do you use and what OS? your datasheet says that VCC is +5V and the TX pin also work in 0-VCC range. If you use beaglebone it accepts only 3.3V, however there can be options 2013/11/4 Gustavo Oliveira gustavo@gmail.com Hello, I'm trying to read from a LV-Maxsonar-EZ0 using the serial interface. I have connected the wires correctly and I have placed an overlay in uart2. The problem is the data I'm reading from the sensor. I can only get garbage, but its not completely wrong because the data changes according to the distance to obstacle. The datasheet for the sensor can be found here: datasheethttp://www.maxbotix.com/documents/MB1000_Datasheet.pdf . I searched google for a day and couldn't find anything... Someone posted in a raspberry pi forum that the problem is the meaning of 1s and 0s, but I changed active_low to 1 and I got the same. I'm not very proficient with electronics, so I might take some time following instructions. Nonetheless all the help will be welcome. -- 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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/gOK8R4_mRzw/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
[beagleboard] beagleboneblack don't restart after power fluctuation.
I've connected beagleboneblack to my car power supply with 24V to 5V step down. when I power on my car the BBB starts but when I ignite the engine BBB stops running and don reboot though the power led is on. Can I fix it with software change mentioned at https://groups.google.com/forum/#!msg/beagleboard/aXv6An1xfqI/mURD3LfQ5dMJ? -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
The reason it powers off is because your ignition switch is not providing constant power when you turn the key to start. I would try to find a power source that has power when key is set to on and start. On Nov 5, 2013 6:21 AM, neckTwi satyagowtha...@gmail.com wrote: I've connected beagleboneblack to my car power supply with 24V to 5V step down. when I power on my car the BBB starts but when I ignite the engine BBB stops running and don reboot though the power led is on. Can I fix it with software change mentioned at https://groups.google.com/forum/#!msg/beagleboard/aXv6An1xfqI/mURD3LfQ5dMJ ? -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
Ya I got that! But I am looking for some aiding reactive circuits or some magical software fix! -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
Ok so why not add a cap to the circuit to keep it powered while you start the car. On Nov 5, 2013 6:34 AM, neckTwi satyagowtha...@gmail.com wrote: Ya I got that! But I am looking for some aiding reactive circuits or some magical software fix! -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
cap? is it some electronic circuitry? I donno much abt electronic circuits but i can solder few resistors, capacitors and diods on a board. Any help is a gr8 favour.. Thank you. -- 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/groups/opt_out.
[beagleboard] Re: Sleep Mode / Power Saving Mode of BeagleBone Black
Have you tried *echo mem* ** */sys/power/state *to enter into 'mem' state? On Thursday, 31 October 2013 10:26:03 UTC+5, rameez...@wavetec.co wrote: Hi, I have a BeagleBone Black with Ubuntu Precise 12.04.2 LTS running on it from a micro-SD card. I want to put my BeagleBone Black in sleep mode (or power saving mode). When I press the power button (for a small duration) nothing happens, but when I press the power button for more than 8sec, the board completely shuts down. Is there any way to put the beaglebone black on power saving mode, (maybe using a power button or using some command from command line). The beaglebone consumes around 0.24A on normal running (I am not using HDMI output, just using SSH). I want to put the board in sleep/power saving mode, so that the current consumption become less than 10mA. Is it possible? Regards, Rameez Qasim. -- 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/groups/opt_out.
Re: [beagleboard] Re: Newbie - Difference in Ti-sdk and Angstorm
Hi Jody, I also used Beaglebone Black without LCD/touchscreen module, just with HDMI out to my Monitor. You can try to execute systemctl disable gdm.service and ./myQtHelloWorld -qws But in my BBB, I can see the window display to my Monitor but the mouse hanged(can not be moved). Jody Baudoin於 2013年9月1日星期日UTC+8上午5時03分21秒寫道： I only get console debug messages that I put in main. cout or printf(), not sure which I used. I was not sure it was even running, so I put the messages in. It would have been nice if QT could have printed out some error messages instead of running silently. QT acts like it is happy - I just do not see any graphics. Thanks, Jody On 8/31/2013 00:20, Nilesh Pardesi wrote: hi jody, can you please provide details what console debug massages you are getting ? -- 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...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Re: cloud9 bonescript interrupt problems
Hi!!! I have updated my board with the latest bonescript but I'm still having the same problem. The attachInterrupt only fires once and that's it, I'm running the code using Cloud9. How ever when I use the attachInterrupt demo; http://192.168.7.2/Support/BoneScript/attachInterrupt/ It works. Is it still an issue with bonescript or with Cloud9. Urgently need help with this issue... -- 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/groups/opt_out.
[beagleboard] Re: Where i can purchase beagleboard in india?
Hi All, Beaglebone Black is available in India at SUMEET ESHOP http://shop.sumeetinstruments.com/ Authorized distributor for Beagleboard in India. You will also find here other brands as well - Arduino, Digilent, Hitec, Parallax, Sparkfun, Raspberry etc Single source for all your project needs. Regards, On Monday, 14 June 2010 10:23:38 UTC+5:30, beable0920 m wrote: Hi all, IDA systems has no stock of boards. From anywhere else can i try? Regards, sunny. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
Cap = capacitor. Just make sure that it is the right size for where you put it in your circuit. If it is too small i can explode and possibly start a fire. In your original post you stated that you have a 24V to 5V step down, so if you place it before the step down make sure it is at least rated for 24V or if you place it after it has to be at least 5V. You may also consider a voltage monitor circuit to safely power down your BBB to avoid corrupting the file system. -Wil On Nov 5, 2013 6:49 AM, neckTwi satyagowtha...@gmail.com wrote: cap? is it some electronic circuitry? I donno much abt electronic circuits but i can solder few resistors, capacitors and diods on a board. Any help is a gr8 favour.. Thank you. -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Re: BeagleBone Black QT GUI Application
I used Beaglebone Black without LCD/touchscreen module, just with HDMI out to my Monitor. When I execute systemctl disable gdm.service and ./myQtHelloWorld -qws, I can see the window display to my Monitor but the mouse hanged(can not be moved). Can you give me some suggestions for this issue? lisarden於 2013年10月13日星期日UTC+8上午10時46分45秒寫道： Disable gdm at all 11.10.2013 20:39 пользователь MCU Solution mcu...@gmail.comjavascript: написал: when i use the command pkill gdm then run my application , its running. but Mouse operation nill. how can i run the button like graphic application without using the command pkill gdm any idea ?? On Friday, October 11, 2013 9:05:31 PM UTC+5:30, MCU Solution wrote: Yes i have it. On Friday, October 11, 2013 10:10:23 AM UTC+5:30, MCU Solution wrote: is it possible to run QT GUI Application on Beaglebone Black with HDMI Output? i try the QT GUI Example ,No Output in the Monitor .but i try hello world in the terminal its show hello world but i try GUI application example like Buttons ,not shown any Output. Any 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...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Need support in compiling ubuntu for BBB
On Mon, Nov 4, 2013 at 10:39 PM, vinayak aghor vinayak.ag...@gmail.com wrote: Hello, I want to compile OS ubuntu for BBB. I am referring http://eewiki.net/display/linuxonarm/BeagleBone+Black In downloaded linux-dev-am33x-v3.12 in home directory. Then ran script ./build_kernel.sh It initially downloaded cross-compiler toolchain (around 48MB) and did set the CC, which is expected. debug: CC=/home/vinayak/linux-dev-am33x-v3.12/dl/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/arm-linux-gnueabihf- Then it tried to download linux directory scripts/git: LINUX_GIT not defined in system.sh cloning git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git into default location: /home/vinayak/linux-dev-am33x-v3.12/ignore/linux-src Cloning into '/home/vinayak/linux-dev-am33x-v3.12/ignore/linux-src'... remote: Counting objects: 3239961, done. remote: Compressing objects: 100% (486062/486062), done. ^Cceiving objects: 0% (1535/3239961), 836.00 KiB | 50 KiB/s After downloading complete (around 650MB), got message as - Resolving deltas Now internet connection lost. Again ran script ./build_kernel.sh Did the clone finish before the network was lost? Now script again downloading 650MB data, which is not expected. In the previous run, it has downloaded the same data again downloading. There should be some catch in this. the bash logic is as follows... https://github.com/RobertCNelson/stable-kernel/blob/master/scripts/git.sh#L62 How to permanently fix this? How to download LINUX_GIT permanently. so,again will not download same file You could always clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git anywhere in your system, just set the LINUX_GIT variable to the directory to where you cloned it.. If you mess up the logic, will just re-clone it to the 'ignore/linux-src' directory... 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/groups/opt_out.
[beagleboard] Re: CAUTION: musb: Babble Interrupt Occurred
In my case I have a cape that connects via USB (besides the usual headers). And I have a TP on VBUS, sometimes just inserting a tester on the test point generates a Babble Interrupt. Mine isn't properly grounded. You can always check the governor and cpu frequency with: juanjo@balin:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand juanjo@balin:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 30 On Monday, November 4, 2013 12:12:53 PM UTC-3, Philippe Laurent wrote: A few more updates. I've read in a number of other locations that this might be due to a grounding issue or a power draw issue. Starting with tackling the power draw issue, it appears that the system bus outputs different power to the USB device depending on its CPU throttling status. The lower the CPU speed, the (slightly) lower the USB output. Still using Ubuntu 13.04, I've removed both the S99ondemand startup script from the rc2.d folder, as well as placed the line echo 'on' | tee /sys/bus/usb/devices/usb1/power/control in the /etc/rc.local script (no quotes) to try and mitigate the issue. The former, from what I understand, keeps the CPU running at full speed, and does not let it slow down based on demand, the latter works to keep USB power on to the port at all times, rather than letting the BBB decide whether to power it off/on. At this point, the BBB has not thrown any more Babble errors through multiple power off/on events, nor through any extensive scanning or quiet time. Of note, there may also be some merit in the grounding issue, as walking across the floor and then touching the BBB case will occasionally cause the Babble issue to appear and the Symbol device to power off. The device is connected to a DC power supply, but there is no grounding plug with the brick, so it stands to reason that the device is not grounded. Hope this helps someone... although I'm sure that at this point I have no concrete solutions to the problem. On Saturday, November 2, 2013 12:32:03 PM UTC-4, Philippe Laurent wrote: Crap. On third reboot (full power off/on), the device is experiencing the same musb: Babble Interrupt error as before. So... this is a hardware issue? The BBB is powered by a separate adapter (not USB), so power shouldn't be the problem. On Friday, November 1, 2013 1:13:09 PM UTC-4, Philippe Laurent wrote: I resolved my issue by installing and using Ubuntu 13.04 on the BBB. It's been up and running the python scanning script for over 24 hours, which is roughly 23 hours longer than it has before. I used the instructions at http://shrkey.com/setting-up-beaglebone-black-to-boot-off-the-microsd-card/to get the installation squared away. On Wednesday, October 30, 2013 9:51:30 AM UTC-4, Bekir Bahadir wrote: Same problem here. Im also willing to pay for a solution Am Samstag, 31. August 2013 17:42:09 UTC+2 schrieb jez...@gmail.com: I'm using my Beaglebone Black with a USB temperature sensor. It works very well, however I noticed monitoring stopped last night after roughly 35 days uptime. This morning I looked more closely into the log file and noticed: kernel: [2892926.929555] CAUTION: musb: Babble Interrupt Occurred I wasn't able to successfully reset the USB device and before I was able to restart the BBB stopped responding. I power-cycled it and it was back to normal again. Any ideas what caused this kernel message? -- 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/groups/opt_out.
Re: [beagleboard] Read from LV-Maxsonar-EZ0 using uart2
As an addendum, the circuit in my post would work at 3.3 V as well. On Tuesday, November 5, 2013 9:12:14 AM UTC-6, Matthew Witherwax wrote: I believe my blog post http://blog.lemoneerlabs.com/post/Hearing-aidswill solve your issue. You need to build an actual inverter (or buy an IC to do it for you). On Tuesday, November 5, 2013 3:52:54 AM UTC-6, Gustavo Oliveira wrote: I guess I did some mistake answering back there =P It is in UART_RX. I search the internet and found that maybe I'm getting the inverted messages, all the 1s as 0s and the 0s as 1s. On 5 November 2013 09:50, Gustavo Oliveira gustavo@gmail.com wrote: 1) I'm using the 3.3V pin, so the voltage is acceptable in p9_22. 2) What do you mean by setttings, the fields when I export the pin? Or the pin mode? I think mine are ok, what should they be? 3) I tried many applications, python scripts, c scripts, minicom... On 5 November 2013 05:26, Maxim Podbereznyy lisa...@gmail.com wrote: 1) I would place a voltage translator or a simple voltage divider based on two resistors to reduce 5 volts to the acceptable 3.3V. 2) check the pinmux settings for that pin 3) what terminal application do you use to read data? Check the serial port parameters and don't forget to disable the hardware flow control if any 05 нояб. 2013 г. 3:55 пользователь Gustavo Oliveira gustavo@gmail.com написал: Hi, thank you for quick reply, I'm using a BeagleBone and Ubuntu 12.04. I have the TX connected to p9_22, which is uart2 RX. On Monday, November 4, 2013 7:38:06 PM UTC, lisarden wrote: hi! what board do you use and what OS? your datasheet says that VCC is +5V and the TX pin also work in 0-VCC range. If you use beaglebone it accepts only 3.3V, however there can be options 2013/11/4 Gustavo Oliveira gustavo@gmail.com Hello, I'm trying to read from a LV-Maxsonar-EZ0 using the serial interface. I have connected the wires correctly and I have placed an overlay in uart2. The problem is the data I'm reading from the sensor. I can only get garbage, but its not completely wrong because the data changes according to the distance to obstacle. The datasheet for the sensor can be found here: datasheethttp://www.maxbotix.com/documents/MB1000_Datasheet.pdf . I searched google for a day and couldn't find anything... Someone posted in a raspberry pi forum that the problem is the meaning of 1s and 0s, but I changed active_low to 1 and I got the same. I'm not very proficient with electronics, so I might take some time following instructions. Nonetheless all the help will be welcome. -- 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...@**googlegroups.com. For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- LinkedIn - http://www.linkedin.com/in/**maximpodbereznyyhttp://www.linkedin.com/in/maximpodbereznyy Company - http://www.linkedin.com/**company/mentorelhttp://www.linkedin.com/company/mentorel Facebook - https://www.facebook.com/**mentorel.companyhttps://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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/gOK8R4_mRzw/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
Thank you. I will give a try. As per the post here https://groups.google.com/forum/#!msg/beagleboard/aXv6An1xfqI/mURD3LfQ5dMJ? the power source should have proper rise time. I'm afraid a capacitor will increase the rise time. Any way I'll give a try. -- 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/groups/opt_out.
Re: [beagleboard] Read from LV-Maxsonar-EZ0 using uart2
If you contact MaxBotix or check the specs on the Pololu page http://www.pololu.com/product/723/ you can see it has the following outputs - Three interfaces (all are active simultaneously): - Serial output: asynchronous, logic-level, *inverted*, 9600 bps 8N1 - Analog output: (Vcc/512) / inch (10 mV/inch when input voltage Vcc = 5 V) - Pulse width output: 147 μs/inch On Tue, Nov 5, 2013 at 9:37 AM, Mike Bremford m...@bfo.com wrote: At risk of asking the obvious, have you double checked you're putting out serial data? Your datasheet requires the BW pin to be floating or low to output out serial data, otherwise it puts out pulse data on the same pin. Before you try the inverter approach, maybe just put a multimeter on the Tx pin on the device - it should be high (ie 3.3V) most of the time. If it's transmitting once per second, NMEA0183-style, even then the voltage should be closer to 3.3V than GND. If it's closer to GND, then you'll need to invert it. I'm working with a whole stack of NMEA0183 devices and assuming they're properly functioning, the only thing you can really get wrong are baud rate, inverted signal, wrong pin (tx instead of rx, in which case you hear nothing) or software config error. For software, I just use screen - screen /dev/ttyO2 9600 - rather than minicom or any of the other scripts. Much easier. On 5 November 2013 09:52, Gustavo Oliveira gustavo.pinho...@gmail.comwrote: I guess I did some mistake answering back there =P It is in UART_RX. I search the internet and found that maybe I'm getting the inverted messages, all the 1s as 0s and the 0s as 1s. On 5 November 2013 09:50, Gustavo Oliveira gustavo.pinho...@gmail.comwrote: 1) I'm using the 3.3V pin, so the voltage is acceptable in p9_22. 2) What do you mean by setttings, the fields when I export the pin? Or the pin mode? I think mine are ok, what should they be? 3) I tried many applications, python scripts, c scripts, minicom... On 5 November 2013 05:26, Maxim Podbereznyy lisar...@gmail.com wrote: 1) I would place a voltage translator or a simple voltage divider based on two resistors to reduce 5 volts to the acceptable 3.3V. 2) check the pinmux settings for that pin 3) what terminal application do you use to read data? Check the serial port parameters and don't forget to disable the hardware flow control if any 05 нояб. 2013 г. 3:55 пользователь Gustavo Oliveira gustavo.pinho...@gmail.com написал: Hi, thank you for quick reply, I'm using a BeagleBone and Ubuntu 12.04. I have the TX connected to p9_22, which is uart2 RX. On Monday, November 4, 2013 7:38:06 PM UTC, lisarden wrote: hi! what board do you use and what OS? your datasheet says that VCC is +5V and the TX pin also work in 0-VCC range. If you use beaglebone it accepts only 3.3V, however there can be options 2013/11/4 Gustavo Oliveira gustavo@gmail.com Hello, I'm trying to read from a LV-Maxsonar-EZ0 using the serial interface. I have connected the wires correctly and I have placed an overlay in uart2. The problem is the data I'm reading from the sensor. I can only get garbage, but its not completely wrong because the data changes according to the distance to obstacle. The datasheet for the sensor can be found here: datasheethttp://www.maxbotix.com/documents/MB1000_Datasheet.pdf . I searched google for a day and couldn't find anything... Someone posted in a raspberry pi forum that the problem is the meaning of 1s and 0s, but I changed active_low to 1 and I got the same. I'm not very proficient with electronics, so I might take some time following instructions. Nonetheless all the help will be welcome. -- 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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/gOK8R4_mRzw/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For
[beagleboard] Re: Read from LV-Maxsonar-EZ0 using uart2
Gustavo, I posted a link to my blog below. I experienced this problem a couple years ago when I first started with MaxBotix sonars. The datasheet isn't 100% clear, but the serial signal is inverted. That is what the person in the RPi forum meant about the meaning of the 1s and 0s. You cannot simply flip the received data because the whole stream is inverted (to include start bits, etc.). You need to invert everything. In my post you will find a simple circuit made of 2 resistors and a transistor that will invert the signal for you. If you prefer, you can purchase a hex inverter to accomplish the same thing. I hope it helps you. To save you from finding my other posts, here is the link http://blog.lemoneerlabs.com/post/Hearing-aids On Monday, November 4, 2013 11:57:41 AM UTC-6, Gustavo Oliveira wrote: Hello, I'm trying to read from a LV-Maxsonar-EZ0 using the serial interface. I have connected the wires correctly and I have placed an overlay in uart2. The problem is the data I'm reading from the sensor. I can only get garbage, but its not completely wrong because the data changes according to the distance to obstacle. The datasheet for the sensor can be found here: datasheethttp://www.maxbotix.com/documents/MB1000_Datasheet.pdf . I searched google for a day and couldn't find anything... Someone posted in a raspberry pi forum that the problem is the meaning of 1s and 0s, but I changed active_low to 1 and I got the same. I'm not very proficient with electronics, so I might take some time following instructions. Nonetheless all the help will be welcome. -- 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/groups/opt_out.
[beagleboard] Re: dmesg messages
I've found that in more recent releases the BEAGLEBONE partition is not mounted by default. In case it's not, you should mount it first, mount /dev/mmcblk0p1 /media/BEAGLEBONE before trying to edit the uEnv.txt file. On Monday, November 4, 2013 9:59:49 PM UTC-5, daen...@yahoo.com wrote: Not doing it for me. Tried both on a fresh install of 2013-09-04 image. Hate to think of it as eating up the limited amount of flash storage. On Saturday, July 20, 2013 4:01:55 PM UTC-4, craig.m...@gmail.com wrote: Edit /media/BEAGLEBONE/uEnv.txt and change drm.debug=7 to either of these two, drm.debug=3 drm.debug=11 This is a bit mask. The 4 value produces the plentiful HDM connector messages, so by subtracting 7-4=3 you remove the offending messages. Craig On Wednesday, June 5, 2013 2:30:03 AM UTC-4, tvv...@gmail.com wrote: Hi I have BBB with Angstrom 2013-05-27. After dmesg I get: [ 72.936416] gen_ndis_query_resp: RNDIS_OID_GEN_RCV_NO_BUFFER [ 72.940091] gadget: rndis reqa1.01 v i l4096 [ 72.940361] gadget: rndis req21.00 v i l36 [ 72.944095] gadget: rndis reqa1.01 v i l4096 [ 72.944390] gadget: rndis req21.00 v i l36 [ 72.948090] gadget: rndis reqa1.01 v i l4096 [ 72.948374] gadget: rndis req21.00 v i l36 [ 72.948412] gen_ndis_query_resp: RNDIS_OID_GEN_RCV_NO_BUFFER [ 72.952062] gadget: rndis reqa1.01 v i l4096 [ 72.952189] gadget: rndis req21.00 v i l36 [ 72.956092] gadget: rndis reqa1.01 v i l4096 [ 80.906804] [drm:output_poll_execute], [CONNECTOR:5:HDMI-A-1] status updated from 2 to 2 Every 10 sec [drm:output_poll_execute], [CONNECTOR:5:HDMI-A-1] status updated from 2 to 2. Is it notmal? -- 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/groups/opt_out.
Re: [beagleboard] Re: UBIFS/U-Boot and UBIFS/Linux not compatible
Hi Tom! I don't seem to find proper order using below patch sets. tiistai, 5. marraskuuta 2013 10.35.25 UTC+2 matti kaasinen kirjoitti: Hi Tom, I'm terribly sorry annoying you for once more time with this issue. I have tried to figure out what patch sets you are suggesting below. 2013/11/2 matti.kaasi...@gmail.com I think that at least part of the answer is that you need to enable CONFIG_SYS_NAND_ONFI_**DETECTION. You may also need to apply some of Pekon's patches from http://patchwork.ozlabs.org/** project/uboot/list/?submitter=**17320state=*http://patchwork.ozlabs.org/project/uboot/list/?submitter=17320state=*(there are 3 series there as of this writing, 2 v2's and a v8, you should apply all 3 series, and in the right order, saving each series to an mbox, and using git am -3 / git am --abort when they fail should help get the right order sorted out quickly). So, to make it clear as crystal even for me, let's list what I found matching with your message: 2013-08-14 [U-Boot,v2,1/4] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform [U-Boot,v2,2/4] mtd: nand: omap: optimize chip-ecc.hwctl() for H/W ECC schemes [U-Boot,v2,3/4] mtd: nand: omap: optimize chip-ecc.calculate() for H/W ECC schemes [U-Boot,v2,4/4] mtd: nand: omap: optimized chip-ecc.correct() for H/W ECC schemes 2013-09-06 2013-09-10 [U-Boot,v2,1/3] am33xx: elm: add support for BCH16_ECC - ELM driver updates [U-Boot,v2,2/3] mtd: nand: omap: add support for BCH16_ECC - NAND driver updates [U-Boot,v2,3/3] am335x: update README for BCH16 2013-09-30 [U-Boot,v2,1/4] mtd: nand: add NAND_BUSWIDTH_AUTO to autodetect bus width [U-Boot,v2,2/4] am33xx: add CONFIG_SYS_NAND_DEVICE_WIDTH to determine NAND device bus-width [U-Boot,v2,3/4] am335x: fix GPMC config for NAND and NOR SPL boot [U-Boot,v2,4/4] am33xx: add support for beaglebone x16 NAND cape 2013-10-10 [U-Boot,v8,1/5] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform [U-Boot,v8,2/5] mtd: nand: omap: optimize chip-ecc.hwctl() for H/W ECC schemes [U-Boot,v8,3/5] mtd: nand: omap: optimize chip-ecc.calculate() for H/W ECC schemes [U-Boot,v8,4/5] mtd: nand: omap: optimized chip-ecc.correct() for H/W ECC schemes [U-Boot,v8,5/5] board/ti/am335x/README: update for NAND boot It seems to me that 2013-08-14 and 2013-10-10 are providing (more or less) same patch set = My choice is 2013-10-10 2013-09-06 and 2013-09-30 seem different to me = these are the 2v2's your mentioned above My guess for patching order would be: 1) 2013-10-10 2) 2013-09-06 2) 2013-09-10 3) 2013-09-30 Patch sets 1) 2013-10-10 and 3) 2013-09-30 work fine if 1) is executed first. However, 2) 2013-09-10 fails in every position. In particular: [U-Boot,v2,2/3] mtd: nand: omap: add support for BCH16_ECC - NAND driver updates fails in several places. Firs one takes place when appending arch/arm/include/asm/arch-am33xx/omap_gpmc.h. It tries to make following replacement: - OMAP_ECC_BCH8_CODE_HW+ OMAP_ECC_BCH8_CODE_HW, even though that comma was already provided by: [U-Boot,v8,1/5] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform while creating the stuct including that line. So, somehow it seems that some more patches are required in order to get these patches run. Best regards, Matti -- 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/groups/opt_out.
[beagleboard] BBB GPIO on P8/P9 Headers
With a Beaglebone Black, I want to use the MMC, USB and occasionally an LCD cape. The I/O for peripherals will be entirely SPI based, so I want to use some GPIO pins as chip selects. Looking at the P8/P9 header mappings, it looks like P8 is almost entirely used up with MMC and LCD signals, which leaves me P9 for GPIO. What pins are other group members using for GPIO and why? -- 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/groups/opt_out.
Re: [beagleboard] laptop doesn't recognize bbb as a storage device
come on you guys keep the attachments down to 2-3 k On 11/5/2013 5:17 AM, Erdem YILMAZ wrote: Hello, I am a newbie so i'm sorry if this problem is very easy. but i couldn't solve it by myself. i got a beaglebone black A5C a week ago from Farnell when i connect the bbb to laptop the process is like below 1. power led is on 2. four seconds later usr0 is on 3. after that usr1 and usr2 are on 4. all the usr leds are on 5. usr0 is heartbeating enclosed you can find a file which shows led status when connected. I installed the bone_drv.exe program. i left the bbb connected to laptop more than 30 minutes but laptop didn't recognize it. I've tried a win7 laptop, winxp laptop, winxp desktop pc, win7 64bit desktop pc but none of them recognize it. so i have used several different usb cables and the result is unfortunately same. I have checked the usb cables by avometer. the cables are ok. I have downloaded usbview program and connected the bbb and i see the program doesnt recognize it. but beaglebone black's leds are blinking so it seems like running but usb connection. -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] BBB GPIO on P8/P9 Headers
First do you plan on using HDMI, or an LCD via SPI ? Most of those pins used by HDMI can be easily recovered. Ive also been told you can reclaim a few from the eMMC too, but have not tried it personally. Secondly, you need to do a bit of reading / understanding of what you're working with. No different from anyone else who has been working with these boards a while. Read the SRM , and TRM( technical reference manual of the AM335x processors ). Then use google, and the search feature of these forums. There is a lot of useful information out there. You just have to look for it. On Tue, Nov 5, 2013 at 9:42 AM, m...@gehlvail.net wrote: With a Beaglebone Black, I want to use the MMC, USB and occasionally an LCD cape. The I/O for peripherals will be entirely SPI based, so I want to use some GPIO pins as chip selects. Looking at the P8/P9 header mappings, it looks like P8 is almost entirely used up with MMC and LCD signals, which leaves me P9 for GPIO. What pins are other group members using for GPIO and why? -- 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/groups/opt_out. -- 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/groups/opt_out.
[beagleboard] Re: BBB GPIO on P8/P9 Headers
Scratch that. Mode 7 is my friend ;-) On Tuesday, November 5, 2013 9:42:40 AM UTC-7, mi...@gehlvail.net wrote: With a Beaglebone Black, I want to use the MMC, USB and occasionally an LCD cape. The I/O for peripherals will be entirely SPI based, so I want to use some GPIO pins as chip selects. Looking at the P8/P9 header mappings, it looks like P8 is almost entirely used up with MMC and LCD signals, which leaves me P9 for GPIO. What pins are other group members using for GPIO and why? -- 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/groups/opt_out.
Re: [beagleboard] Re: Read from LV-Maxsonar-EZ0 using uart2
Thank you Matthew, you confirmed what I didn't want to xD I switched to analog for now. On 5 November 2013 16:16, Matthew Witherwax ablec...@gmail.com wrote: Gustavo, I posted a link to my blog below. I experienced this problem a couple years ago when I first started with MaxBotix sonars. The datasheet isn't 100% clear, but the serial signal is inverted. That is what the person in the RPi forum meant about the meaning of the 1s and 0s. You cannot simply flip the received data because the whole stream is inverted (to include start bits, etc.). You need to invert everything. In my post you will find a simple circuit made of 2 resistors and a transistor that will invert the signal for you. If you prefer, you can purchase a hex inverter to accomplish the same thing. I hope it helps you. To save you from finding my other posts, here is the link http://blog.lemoneerlabs.com/post/Hearing-aids On Monday, November 4, 2013 11:57:41 AM UTC-6, Gustavo Oliveira wrote: Hello, I'm trying to read from a LV-Maxsonar-EZ0 using the serial interface. I have connected the wires correctly and I have placed an overlay in uart2. The problem is the data I'm reading from the sensor. I can only get garbage, but its not completely wrong because the data changes according to the distance to obstacle. The datasheet for the sensor can be found here: datasheethttp://www.maxbotix.com/documents/MB1000_Datasheet.pdf . I searched google for a day and couldn't find anything... Someone posted in a raspberry pi forum that the problem is the meaning of 1s and 0s, but I changed active_low to 1 and I got the same. I'm not very proficient with electronics, so I might take some time following instructions. Nonetheless all the help will be welcome. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/gOK8R4_mRzw/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Re: Beaglebone Black and Chipsee 7 LCD running Android
Special Computing is now offering Chipsee Capacitive Touch 7 LCD as a complete kit that includes BeagleBoneBlack board with microSD card that boots a demo image of your choice (Android 4.1, LinuxSDK, WinCE6, WCE7), along with support DVD containing open source files and documentation. http://specialcomp.com/beaglebone/#22702 On Fri, Oct 18, 2013 at 12:37 PM, Tony Pitman t...@shatalmic.com wrote: When I got the board I received a CD with the images and sources on it. I set up an Ubuntu VM to build on and followed the instructions that came on the CD to build. I ran into some errors building. In the end I found the answer and wanted to post here in case someone else has the same problem. The instructions give the following command for getting all the required packages: $ sudo apt-get install git-core gnupg flex bison gperf build-essential \ zip curl zlib1g-dev libc6-dev lib32ncurses5-dev ia32-libs \ x11proto-core-dev libx11-dev lib32readline5-dev lib32z-dev \ libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown \ libxml2-utils xsltproc minicom tftpd uboot-mkimage expect I found that this was missing 2 packages: libc6-dev-i386 and lib32z1-dev so I added them. This is the final command: $ sudo apt-get install git-core gnupg flex bison gperf build-essential \ zip curl zlib1g-dev libc6-dev libc6-dev-i386 lib32ncurses5-dev ia32-libs \ x11proto-core-dev libx11-dev lib32readline5-dev lib32z-dev lib32z1-dev \ libgl1-mesa-dev g++-multilib mingw32 tofrodos python-markdown \ libxml2-utils xsltproc minicom tftpd uboot-mkimage expect I hope this helps someone else avoid the 2 days it took me to finally track this down. Now that I know to look for this kind of thing I hope it won't take me as long to figure out stuff like this. -- 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/groups/opt_out. -- 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/groups/opt_out.
[beagleboard] Re: 3.12-rc4: kernel testing time...
Capes don't work any more with DT sources from 3.8. [7.758602] of_resolve: Could not find symbol 'ocp' [7.763885] bone-capemgr bone_capemgr.6: slot #3: Failed to resolve tree -- 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/groups/opt_out.
[beagleboard] Re: BeagleBone Black ethernet - no lights
Update: I've flashed back to Angstrom and tried again. At least the Ethernet lights light up, but they won't stay on. When I go to network connections I only see the ethernet option for a few seconds at a time. And, I tried pressing down firmly as well as using different cables and ethernet sources. No luck so far. Perhaps I do have broken pins, however, its not quite obvious to me. Where do I look for the pins? On Tuesday, October 29, 2013 2:48:15 PM UTC-4, Michael Mullin wrote: Look into the ethernet connector and check the actual pins. It should be obvious. My first beagleboard black had a broken pin. On Monday, October 28, 2013 12:26:35 PM UTC-4, Felicia James wrote: Greetings, I'm a proud new owner of a BBB and still in the Newbie category when it comes to terminal commands. I've been able to successfully boot my BBB using Angstrom, I've even been able to connect to the internet (at first) using an Ethernet cable. I have not been able to get the wifi to work - I have the recommended Edimax wifi dongle (and know it works), but opkg update is not successful. I tried switching to Ubuntu instead (which I am more familiar and which I know how to connect to the internet...at least with the desktop version). But, sudo apt-get update doesn't work, so I can't install ubuntu-desktop either :( That's not the reason for this particular post though. About the third time I tried using the Ethernet, the connection kept connecting and unconnecting. That's when I noticed that the green and yellow network lights were not staying lit. Now, I cannot get them to light at all. So, before I can address the problem with updating, I need a network connection. Could there be something wrong with my board? Or, have I possibly messed up a setting that turned off the Ethernet connector? I would appreciate some troubleshooting advice...currently, I have Ubuntu flashed to the on board memory. If it helps, I'll switch back to Angstrom. Thanks in advance for your assistance, Felicia -- 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/groups/opt_out.
[beagleboard] Re: BeagleBone userspace SPI interface (spidev) patch
Jack, Can I read your post to mean that the defaults are: MOSI - SPIx_D0 MISO - SPIx_D1 in BBB lingo? The BBB RM is somewhat devoid of SPI information. The TI 3358 reference manual (SPRUH73I rev I, August 2013) shows the opposite on pages 4543 to 4544, figure 24-1 and table 24-4. It appears that D0/D1 are configurable. I do not care to configure it. I want it to just work the way I wire it, so I want the default. Is D0 MISO or MOSI by default? Cheers, Joe On Wednesday, March 21, 2012 5:09:39 AM UTC-4, Jack Mitchell wrote: Pins 18 and 21 are MISO (Master Input, Slave Output) and MOSI (Master Output, Slave Input), what tying them together does it send the out from your program, to the input of your program, hence you create a loop just reading what you are writing! Hope that helps clear things up! Cheers, -- Jack Mitchell Embedded Systems Engineer http://www.embed.me.uk On Wednesday, 21 March 2012 02:04:49 UTC, emb wrote: ah, thanks mr mitchell the step i was missing was tying pins 18 and 21 on P9... i'm still not sure (from reading BONE_SR.pdf) why this is needed...? anyways thanks again eb -- 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/groups/opt_out.
[beagleboard] Re: OpenWrt on BeagleBone Black
https://github.com/artekw/openwrt-bbb -- 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/groups/opt_out.
[beagleboard] Re: Beaglebone Black and Chipsee 7 LCD running Android
No I did not. I get to the same point and get an error about CC1 not being found. I am now trying the Freescale iMX6 build and it is working so far. I wish there was some place to get support on this. On Tuesday, November 5, 2013 2:11:43 PM UTC-7, bra...@gmail.com wrote: Did you ever get this working? On Friday, September 27, 2013 5:21:27 PM UTC-4, Tony Pitman wrote: I am going to purchase a Beaglebone Black and the Chipsee 7 LCD that is shown running Android. I have see a lot of downloads for different Android images that will run on the different Beaglebone boards. I would like to make sure i get the right image and source code. Can someone point me to the best place to get an image that will just come up in that config and then also the source so I can build it myself? Thanks... -- 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/groups/opt_out.
Re: [beagleboard] Re: Newbie - Difference in Ti-sdk and Angstorm
export QWS_MOUSE_PROTO=linuxinput:/dev/input/event1 ---solve mouse issue barne...@gmail.com於 2013年11月5日星期二UTC+8下午5時48分17秒寫道： Hi Jody, I also used Beaglebone Black without LCD/touchscreen module, just with HDMI out to my Monitor. You can try to execute systemctl disable gdm.service and ./myQtHelloWorld -qws But in my BBB, I can see the window display to my Monitor but the mouse hanged(can not be moved). Jody Baudoin於 2013年9月1日星期日UTC+8上午5時03分21秒寫道： I only get console debug messages that I put in main. cout or printf(), not sure which I used. I was not sure it was even running, so I put the messages in. It would have been nice if QT could have printed out some error messages instead of running silently. QT acts like it is happy - I just do not see any graphics. Thanks, Jody On 8/31/2013 00:20, Nilesh Pardesi wrote: hi jody, can you please provide details what console debug massages you are getting ? -- 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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] Re: BeagleBone Black QT GUI Application
Thanks lisarden. I fixed this issue by the following commands. export QWS_MOUSE_PROTO=linuxinput:/dev/input/event1 lisarden於 2013年11月5日星期二UTC+8下午10時44分08秒寫道： http://harmattan-dev.nokia.com/docs/library/html/qt4/qt-embedded-pointer.html you can also use google sometimes ;) 2013/11/5 barne...@gmail.com javascript: I used Beaglebone Black without LCD/touchscreen module, just with HDMI out to my Monitor. When I execute systemctl disable gdm.service and ./myQtHelloWorld -qws, I can see the window display to my Monitor but the mouse hanged(can not be moved). Can you give me some suggestions for this issue? lisarden於 2013年10月13日星期日UTC+8上午10時46分45秒寫道： Disable gdm at all 11.10.2013 20:39 пользователь MCU Solution mcu...@gmail.com написал: when i use the command pkill gdm then run my application , its running. but Mouse operation nill. how can i run the button like graphic application without using the command pkill gdm any idea ?? On Friday, October 11, 2013 9:05:31 PM UTC+5:30, MCU Solution wrote: Yes i have it. On Friday, October 11, 2013 10:10:23 AM UTC+5:30, MCU Solution wrote: is it possible to run QT GUI Application on Beaglebone Black with HDMI Output? i try the QT GUI Example ,No Output in the Monitor .but i try hello world in the terminal its show hello world but i try GUI application example like Buttons ,not shown any Output. Any 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...@**googlegroups.com. For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- 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...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
[beagleboard] Re: QT runs BUT no graphics output (text output to command windows only)
export QWS_MOUSE_PROTO=linuxinput:/dev/input/event1
--My mouse can be worked.
barne...@gmail.com於 2013年11月5日星期二UTC+8下午5時56分26秒寫道：
I used Beaglebone Black without LCD/touchscreen module, just with HDMI out
to my Monitor.
You can try to execute
systemctl disable gdm.service
and
./myQtHelloWorld -qws,
I can see the window display to my Monitor
but the mouse hanged(can not be moved).
Jody Baudoin於 2013年8月21日星期三UTC+8下午9時53分48秒寫道：
Greetings everyone.
The program runs, but produces no graphical output.
The program does produce cout output.
The program does not return from the app.exec() call.
The build steps the main.cpp file are included below.
I built a QT application using this sequence on Linux Mint:
. /usr/local/angstrom/arm/environment-setup
qmake qte-example.pro
make
Used sftp to copy the file to the beagleBone Black desktop.
Beaglebone Black Terminal. Angstron, with a GUI running on HDMI
monitor, keyboard moust.
//Installation of qt on the beagleBone was as follows:
// opkg update
// opkg install qt4-embedded --force-depends
// REM - I am concerned about the need for --force-depends as I do not
understand why it would not work without it.
./qte-example -qws
hello world
right before return
main.cpp file:
int main(int argc, char** argv)
{
cout hello world endl;
QApplication app(argc, argv);
QPushButton helloButton(Hello World);
helloButton.resize(80, 20);
helloButton.show();
cout right before return endl;
return app.exec();
cout right after return endl;
}
Can someone give me a hint or link to a check list?
My guess is that the application cannot access the graphics output.
Or, maybe the libraries on Mint BeagleBone do not match.
Thanks,
Jody
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[beagleboard] Stache Cam with BeagleBone 3.1MP Camera
Good afternoon. I recently downloaded the stache cam code from the web. I have a Beaglbone black and 3.1 MP Camera Cape. I've managed to get the code to compile (I wanted to cross compile from my Linux environment, but that is a future project), but when I run the compiled stache cam code, this is what I get: VIDIOC_REQBUFS: Cannot allocate memory munmap: Invalid argument munmap: Invalid argument munmap: Invalid argument munmap: Invalid argument Unable to stop the stream.: Bad File Descriptor munmap: Invalid argument munmap: Invalid argument munmap: Invalid argument munmap: Invalid argument Floating Point Exception I don't see in the stache cam code where there is a link to a specific device for the camera. If I try running the code passing in a 0 or 1 (which I assume represents the camera in the system), I receive the error message Could not load 0 or Could not load 1 I'm thinking there is something very simple I have wrong, either with the driver for the camera or the stache cam code. Any suggestions? -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
I've connected beagleboneblack to my car power supply with 24V to 5V step down. 24V power supply in a car? If this means you're this from the accessories circuit, you're doomed. Accessories are turned off while the car is being started, and a cap won't be enough to power the beaglebone, since they stay off as long as you're turning the engine. Another problem is, you'll corrupt the filesystem with an out-of-the-box beaglebone. You'll *have to* use a read only file system. You could tie the beaglebone directly to the battery (with a fuse of course) and use some circuit to monitor when to turn it on and off. On Tuesday, November 5, 2013 9:24:49 AM UTC-8, Wilfredo Nieves wrote: I think you should be fine as long as you don't use a value that is too high or too low. Too high may cause problems with rise time and too low may not keep enough power supplied for the board to stay powered up. Also caps aren't like batteries, the charge almost instantaneously where as batteries need time to fully charge so as long as you can get the cap charged fast enough the board should power up without any problems. -Wil On Nov 5, 2013 8:27 AM, satya gowtham kudupudi satyago...@gmail.comjavascript: wrote: Thank you. I will give a try. As per the post here https://groups.google.com/forum/#!msg/beagleboard/aXv6An1xfqI/mURD3LfQ5dMJ? the power source should have proper rise time. I'm afraid a capacitor will increase the rise time. Any way I'll give a try. -- 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...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
Not necessarily , my car is a 95 3kgt and it starts within 1-2 seconds of turning it over. A cap big enough should be able to handle that. As for the 24v idk how I didn't catch that, but then again who knows it is possible. -Wil On Nov 5, 2013 9:30 PM, Brandon I brandon.ir...@gmail.com wrote: I've connected beagleboneblack to my car power supply with 24V to 5V step down. 24V power supply in a car? If this means you're this from the accessories circuit, you're doomed. Accessories are turned off while the car is being started, and a cap won't be enough to power the beaglebone, since they stay off as long as you're turning the engine. Another problem is, you'll corrupt the filesystem with an out-of-the-box beaglebone. You'll *have to* use a read only file system. You could tie the beaglebone directly to the battery (with a fuse of course) and use some circuit to monitor when to turn it on and off. On Tuesday, November 5, 2013 9:24:49 AM UTC-8, Wilfredo Nieves wrote: I think you should be fine as long as you don't use a value that is too high or too low. Too high may cause problems with rise time and too low may not keep enough power supplied for the board to stay powered up. Also caps aren't like batteries, the charge almost instantaneously where as batteries need time to fully charge so as long as you can get the cap charged fast enough the board should power up without any problems. -Wil On Nov 5, 2013 8:27 AM, satya gowtham kudupudi satyago...@gmail.com wrote: Thank you. I will give a try. As per the post here https://groups.google.com/forum/#!msg/beagleboard/ aXv6An1xfqI/mURD3LfQ5dMJ? the power source should have proper rise time. I'm afraid a capacitor will increase the rise time. Any way I'll give a try. -- 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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out. -- 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/groups/opt_out.
Re: [beagleboard] beagleboneblack don't restart after power fluctuation.
A cap big enough should be able to handle that. Not sure if I did my math right, but for 2 seconds at 2W (beaglebone will be booting), and assuming his 24V to 5V regulator can regulate with an input voltage all the way down to 12V, that's around 20mF. I guess that's doable with $$$. It wouldn't be as simple as connecting the cap to the accessories line, since this would absolutely destroy your relay contacts from the inrush in charging this gigantic cap from 0V. And, you would have to throw a diode in so you didn't power *all* of your accessories with this cap. On Tue, Nov 5, 2013 at 9:15 PM, Wilfredo Nieves wilfred019...@gmail.comwrote: Not necessarily , my car is a 95 3kgt and it starts within 1-2 seconds of turning it over. A cap big enough should be able to handle that. As for the 24v idk how I didn't catch that, but then again who knows it is possible. -Wil On Nov 5, 2013 9:30 PM, Brandon I brandon.ir...@gmail.com wrote: I've connected beagleboneblack to my car power supply with 24V to 5V step down. 24V power supply in a car? If this means you're this from the accessories circuit, you're doomed. Accessories are turned off while the car is being started, and a cap won't be enough to power the beaglebone, since they stay off as long as you're turning the engine. Another problem is, you'll corrupt the filesystem with an out-of-the-box beaglebone. You'll *have to* use a read only file system. You could tie the beaglebone directly to the battery (with a fuse of course) and use some circuit to monitor when to turn it on and off. On Tuesday, November 5, 2013 9:24:49 AM UTC-8, Wilfredo Nieves wrote: I think you should be fine as long as you don't use a value that is too high or too low. Too high may cause problems with rise time and too low may not keep enough power supplied for the board to stay powered up. Also caps aren't like batteries, the charge almost instantaneously where as batteries need time to fully charge so as long as you can get the cap charged fast enough the board should power up without any problems. -Wil On Nov 5, 2013 8:27 AM, satya gowtham kudupudi satyago...@gmail.com wrote: Thank you. I will give a try. As per the post here https://groups.google.com/forum/#!msg/beagleboard/ aXv6An1xfqI/mURD3LfQ5dMJ? the power source should have proper rise time. I'm afraid a capacitor will increase the rise time. Any way I'll give a try. -- 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...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/5toeq-9pcfU/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- 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/groups/opt_out.
