[beagleboard] Re: Here is the BeagleBone Debian (beta) image you want to test
How can I make the microSD image to not copy the image to the eMMC of my Beaglebone Black? That is, by default, when I insert the SD card with this Debian image, and then power the BBB, it will automatically start flashing the Debian image to the BBB internal disk (eMMC). I notice it because after some time the 4 leds stay lit, meaning it has completed the process. I don't want it to happen because I want to use Debian directly from the bootable SD card, and keep the eMMC intact. (probably I just need to delete the script that flashes the image to the eMMC, but where is it?) Em quarta-feira, 5 de março de 2014 19h51min19s UTC-3, Jason Kridner escreveu: The latest BeagleBone Debian images are now posted at: http://beagleboard.org/latest-images/ If you've upgraded the firmware on your BeagleBone or BeagleBone Black in the past, the experience will be quite similar, but you might find the eMMC flashing times a bit faster (~15 minutes rather than ~45 minutes) due to less post-installation processing. Using the 2GB uSD card image also flashes a bit faster and can be resized to whatever your uSD card size is using some scripts under /opt/scripts/tools. Many, many thanks to Robert Nelson, Rob Rittman, Dave Anders, Cody Lacey, the Cloud9 IDE team and so many others in getting us this far. Please take the time to give a detailed look over this image and report any issues to the bug tracker on elinux.org: http://bugs.elinux.org/projects/debian-image-releases While plugged in over USB, you'll see the familiar BEAGLE_BONE drive with START.htm to tell you how to get the drivers configured if you haven't already done so: [image: Inline image 2] Clicking the link or visiting http://192.168.7.2, you'll see the familiar on-board served documentation: [image: Inline image 1] I've introduced a few bugs to the documentation ( http://github.com/beaglebone/bone101 and http://beagleboard.github.io/bone101), so expect to find a lot of issues there. Patches are welcome as are notes in the bug tracker to make sure I don't miss dotting any i's or crossing any t's. This is your chance to try to get some documentation into the system you'd like to see. I felt it was pretty safe to save the documentation as an in-beta item because it shouldn't impact functionality. One of the biggest new features you'll see is when you click on the Cloud9 IDE link: [image: Inline image 3] This is a pre-open-source-beta-only release of version 3 of their IDE. Down at the bottom of the Cloud9 IDE you'll see a new terminal window that runs a full 'tmux' session. You can open up a bunch of these and it makes logging into the board and executing command-line operations *super* simple. Cloud9 IDE version 3 now includes support for Python and the Adafruit_BBIO library is included in these Debian images. That means you can simply paste in your Python code and hit the run button, without any additional download. I checked this out myself by doing a quick LED blink using the Adafruit tutorial ( http://learn.adafruit.com/blinking-an-led-with-beaglebone-black/writing-a-program ): [image: Inline image 4] You should also note that the /var/lib/cloud9 directory now contains a git clone of that bone101 repo (http://github.com/beagleboard/bone101), so you can start using the Cloud9 IDE to edit the content live. What I recommend is creating your own fork of the repo and sending me pull requests of any changes you'd like to see. You can also edit C/C++ code in the Cloud9 IDE, but no 'builder' or 'runner' plug-ins are provided. You will, however, find the Userspace-Arduino (http://elinux.org/Userspace_Arduino) code in /opt/source/Userspace-Arduino. Here's a quick little exercise you can do to blink LED0: root@beaglebone# cd /opt/source/Userspace-Arduino/arduino-makefile/examples/Blink root@beaglebone# perl -i -pe 's/13/14/g' Blink.ino root@beaglebone# make root@beaglebone# ./build-userspace/Blink.elf For more advanced C/C++ developers, future releases should include https://github.com/jackmitch/libsoc. Those familiar with Linux will also note that the init system is 'systemd', which has been helpful in providing reasonable boot times. If you are looking for the journal, you can explore it using 'systemd-journalctl'. I use a Mac and despite the latest version of HoRNDIS fixing issues with Internet Connection Sharing, getting on the WIFI at home makes getting my BeagleBones on the network much easier, further making grabbing new packages with 'sudo apt-get install' much simpler. Drivers and firmware for many common USB WiFi dongles are included, so be sure to report any that you find missing. These latest images include the drivers for the popular UWN200 adapters provided by Logic Supply. To test it out myself, I uncommented and edited the wlan0 entry in /etc/network/interfaces (including replacing wlan0 with ra0), shutdown,
[beagleboard] Playing sound using with my BBB using a piezo buzzer (beeper)
I want play 'beeps' connecting a piezo buzzer to my Beaglebone Black. I am very new to eletronics, so I need some help here, don't know how to operate these sound devices. -Eletrical circuit: as for the circuit, I am referring to this book/chapterhttp://books.google.com.br/books?id=k6FMtlXOQ50Clpg=PA101ots=XwRSMXrq8edq=beaglebone%20black%20buzzerhl=pt-BRpg=PA101#v=onepageq=beaglebone%20black%20buzzerf=falsewhich shows it very well how I should proceed: using a transistor.. -What I don't know is, how do I control the buzzer (say from a C program) to emit sound? -I guess I should configure and use PWM feature of the processor, am I right? -And how do I pragmatically control PWM output? -How could I make it play an given sound file, like a .midi file? -- 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] Connecting BBB UART to another UART device
Thks for answearing! So uboot (the bootloader right?) might send bad commands to my device... well, can it really damage my device? I am just guessing ... For using UART with the P8/P9 pins do I need to go through the hassle of doing the so called device-tree-overlay? Em quarta-feira, 5 de março de 2014 06h26min33s UTC-3, William Hermans escreveu: The serial debug port on the beaglebone black *is* a UART interface. That is, RXD/TXD + GND only. You should be able to technically use this with your RFID device, *however* it may also be possible that uboot by default may cause issues, or perhaps damage to your external device at powerup / boot. It should also be possible to configure uboot to play nice with your hardware. Probably the best / easiest way would be to use one of the other UARTs / set of pins. On Mon, Mar 3, 2014 at 5:55 PM, Ramon Mendes midiw...@gmail.comjavascript: wrote: I want to connect this devicehttp://www.thingmagic.com/embedded-rfid-readers/mercury6e(a RFID reader module) to my BBB, that is, I simply want them to talk (as if it was so easy, ). This RFID module has the following electrical interfaces: UART with 3.3/5V logic levels from 9600 to 921,600 bps; USB 2.0 full speed device port (up to 12 Mbps) I already tried connecting it through USB but 'lsusb' and 'dmesg' shows nothing. So now I wanna try to connect it to my BBB trough UART (no USB is involved here). That is, my plan is simply use 3 wires (GND, RX, TX) to connect one device to another since I think both UART interfaces are compatible, right? Or am I missing to verify something to ensure they are compatible (both are TTL)? My question is, what is the simplest way to physically connect this device to BBB's UART? I want to know if would it be possible to use the serial debug header? That is, is this header a UART port? Or I must configure and use some of the P8/P9 pins? -- 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.
[beagleboard] Connecting BBB UART to another UART device
I want to connect this devicehttp://www.thingmagic.com/embedded-rfid-readers/mercury6e(a RFID reader module) to my BBB, that is, I simply want them to talk (as if it was so easy, ). This RFID module has the following electrical interfaces: UART with 3.3/5V logic levels from 9600 to 921,600 bps; USB 2.0 full speed device port (up to 12 Mbps) I already tried connecting it through USB but 'lsusb' and 'dmesg' shows nothing. So now I wanna try to connect it to my BBB trough UART (no USB is involved here). That is, my plan is simply use 3 wires (GND, RX, TX) to connect one device to another since I think both UART interfaces are compatible, right? Or am I missing to verify something to ensure they are compatible (both are TTL)? My question is, what is the simplest way to physically connect this device to BBB's UART? I want to know if would it be possible to use the serial debug header? That is, is this header a UART port? Or I must configure and use some of the P8/P9 pins? -- 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.
