http://forums.leaflabs.com/topic.php?id=2448 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:13:38 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=2448#post-12764 Tue, 21 Aug 2012 13:44:35 +0000 mbolivar 12764@http://forums.leaflabs.com/ <blockquote><p> So somehow, usb must have been disabled at some point. To fix this, I added SerialUSB.enable() into a sample program and uploaded it. ttyACM0 came back and all was good!</p> </blockquote> <p>That is very strange. This all works for me on Ubuntu 12.04, and SerialUSB.begin() gets called from init(), so you shouldn't need to call it yourself.</p> <p>Did you forget to call init() in your premain(), like we do in all of our example code? Can you post a short, complete example program that exhibits the problem (no /dev/ttyACMx showing up)? </p> http://forums.leaflabs.com/topic.php?id=2448#post-12499 Fri, 17 Aug 2012 09:47:20 +0000 Anonymous 12499@http://forums.leaflabs.com/ <p>OK IT ALL WORKs. </p> <p>So somehow, usb must have been disabled at some point. To fix this, I added SerialUSB.enable() into a sample program and uploaded it. ttyACM0 came back and all was good! asterix - I also added your code in as a way to prevent the code from moving on until I could see the output - neat! thank you! So if ever ttyACM0 disappears, just need to upload a program with SerialUSB.enable() and it'll be back!</p> <p>Thanks everyone! </p> http://forums.leaflabs.com/topic.php?id=2448#post-12494 Fri, 17 Aug 2012 06:48:50 +0000 Anonymous 12494@http://forums.leaflabs.com/ <p>I'm sorry but none of this has worked :( ttyACM just doesn't even show up in the /dev directory!! Bootloader worked, code uploaded - I rearranged the make/environment command and still no response from screen. Why aren't any ttyACM devices showing up? </p> http://forums.leaflabs.com/topic.php?id=2448#post-12491 Fri, 17 Aug 2012 06:12:09 +0000 asterix 12491@http://forums.leaflabs.com/ <p>I have found a work around for this. In your setup function write in something like this:</p> <p>while (SerialUSB.available() &lt; 1 )<br /> {<br /> SerialUSB.write('a');<br /> delay ( 1000);<br /> }</p> <p>This somehow forces the commm port open ;) </p> http://forums.leaflabs.com/topic.php?id=2448#post-12490 Fri, 17 Aug 2012 04:05:54 +0000 ventosus 12490@http://forums.leaflabs.com/ <p>You have to set the environment variable BEFORE running make</p> <p>BOARD=maple_mini make install </p> http://forums.leaflabs.com/topic.php?id=2448#post-12478 Thu, 16 Aug 2012 22:45:34 +0000 Anonymous 12478@http://forums.leaflabs.com/ <p>Hi feurig,</p> <p>Perpetual bootloader allows me to reupload the code (after double and triple-checking that I am in fact compiling for maple-mini: make BOARD=maple_mini install), but it does not return /dev/ttyACM0. That is, it cannot be used for serial USB communication like the interactive program requires. So when I run: ls /dev/ttyACM* - I don't find any directories! </p> http://forums.leaflabs.com/topic.php?id=2448#post-12468 Thu, 16 Aug 2012 16:11:36 +0000 feurig 12468@http://forums.leaflabs.com/ <p>I often have this issue when I compile code for the wrong processor. You should be able to recover by putting it into permanent bootloader mode as described here. <a href="http://leaflabs.com/docs/troubleshooting.html#troubleshooting-perpetual-bootloader" rel="nofollow">http://leaflabs.com/docs/troubleshooting.html#troubleshooting-perpetual-bootloader</a> </p> http://forums.leaflabs.com/topic.php?id=2448#post-12466 Thu, 16 Aug 2012 11:46:14 +0000 Anonymous 12466@http://forums.leaflabs.com/ <p>Hi all,</p> <p>Recently purchased the Maple-mini board and have been using the Linux command-line toolchain. When trying the test-session.cpp program, I found that after I uploaded the program successfully (albeit having to press reset on the board first so that the computer would detect a dfu device), it reads the message - Resetting USB to switch back to runtime mode. I understand that this needs to happen but my Ubuntu is not picking it back up again - i.e. no ttyACM0 port appears in the /dev directory. Thus, I cannot use the 'interactive' features of the program using either minicom or screen. Unplugging and replugging the device or using the reset button does nothing - i.e. dmesg registers a new device was plugged in and then automatically disconnects it! Thus I cannot use any USB interaction! Can someone please please help?!! I need to have this system running ASAP for my project.</p> <p>OS: Ubuntu 12.04</p> <p>Cheers! </p>