736 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:19:55 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=179#post-1259 Tue, 14 Sep 2010 14:34:57 +0000 poslathian 1259@http://forums.leaflabs.com/ <p>Very interesting. I was going to suggest it was a timing thing.<br /> In linux, if you try an open a nonexistant serial port on /dev/ttyACM0, then if a serial device does suddenly crop up, it gets bounced to /dev/ttyACM1,2,3...etc</p> <p>This is exactly what happens if you reset the board and then immediately try and open the serial port. the USB init function gets called as part of the user code, not the bootloader. So directly after reset, there is no serial port for about 4 seconds. </p> <p>Autoreset seems finicky for unknown reasons, especially when using additional peripherals like lots of timers or interrupts. We are working on this issue. </p> http://forums.leaflabs.com/topic.php?id=179#post-1172 Sun, 12 Sep 2010 13:42:14 +0000 GuzZzt 1172@http://forums.leaflabs.com/ <p>Never mind, I found it myself. It was a hardware problem, I used too much power and that seems to be the cause of the instability. It works fine with an external power source. </p> http://forums.leaflabs.com/topic.php?id=179#post-1171 Sun, 12 Sep 2010 13:09:50 +0000 GuzZzt 1171@http://forums.leaflabs.com/ <p>I have a problem with the serial output in Linux (Ubuntu 10.4.1 LTS). I can most of the times not auto reset the board so I must press the RST button, but that is not the main problem. When I connect the board /dev/ttyACM0 is in the list but if I turn on the serial monitor that port is almost immediately removed and I instead get /dev/ttyACM1. If I change to that port and start the serial monitor again it changes back... I most of the times get only a few lines of output or none at all. This is very frustrating. </p> <p>The program is very simple, a loop that every 100 ms outputs a value from a gyro read by analogRead().</p> <p>(I'm new to Linux so I don't know how to debug this. I switched to Linux because I found it working even worse in Windows Vista x64.) </p> http://forums.leaflabs.com/topic.php?id=119#post-726 Thu, 12 Aug 2010 11:22:36 +0000 bnewbold 726@http://forums.leaflabs.com/ <p>It should definitely be possible to get a RTOS running on the Maple and even easier to get one running on the Maple Native. We are planning on prioritizing eLua and possibly python, but we'd love to hear if you get an RTOS up and running.</p> <p>I'm also interested in contiki: <a href="http://www.sics.se/contiki/" rel="nofollow">http://www.sics.se/contiki/</a> </p> http://forums.leaflabs.com/topic.php?id=119#post-725 Thu, 12 Aug 2010 08:39:04 +0000 gadgetkontor 725@http://forums.leaflabs.com/ <p>other candidates: <a href="http://www.bertos.org" rel="nofollow">http://www.bertos.org</a> and <a href="http://chibios.sourceforge.net" rel="nofollow">http://chibios.sourceforge.net</a> </p> http://forums.leaflabs.com/topic.php?id=119#post-718 Wed, 11 Aug 2010 13:57:55 +0000 poslathian 718@http://forums.leaflabs.com/ <p>JTAG or the serial bootloader is fine too. The PRIMER folks run "circleOS" im not sure if has any RT support. Let us know how it goes! </p> http://forums.leaflabs.com/topic.php?id=119#post-717 Wed, 11 Aug 2010 13:26:15 +0000 GuzZzt 717@http://forums.leaflabs.com/ <p><a href="http://www.coocox.org" rel="nofollow">http://www.coocox.org</a> seems also to be made for Cortex M3. So it should work, I guess you use the JTAG interface to flash it? </p> http://forums.leaflabs.com/topic.php?id=119#post-715 Wed, 11 Aug 2010 06:00:40 +0000 lipi 715@http://forums.leaflabs.com/ <p>Just the other day I searched for something similar and found somebody's FreeRTOS port for the Cortex-M3:</p> <p><a href="http://michaldemin.wordpress.com/2010/03/09/freertos-newlib-on-cortex-m3/" rel="nofollow">http://michaldemin.wordpress.com/2010/03/09/freertos-newlib-on-cortex-m3/</a></p> <p>The source is part of his Github repo:</p> <p><a href="http://github.com/robots/STM32/tree/master/accel_test_rtos/" rel="nofollow">http://github.com/robots/STM32/tree/master/accel_test_rtos/</a> </p> http://forums.leaflabs.com/topic.php?id=119#post-714 Wed, 11 Aug 2010 00:49:06 +0000 GuzZzt 714@http://forums.leaflabs.com/ <p>Is it possible to run a RTOS on the Maple HW platform? I'm thinkng about OpenRTOS or CooCox or something like that? Or are you using other seperate LIBs to get threading, mutex locks, file system etc? </p>