http://forums.leaflabs.com/topic.php?id=12243 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:18:15 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=12243#post-27187 Sun, 23 Jun 2013 11:39:43 +0000 ala42 27187@http://forums.leaflabs.com/ <p>&gt;It seems to me that the bootloader should not affect the availability of the pin once the elf has been started..<br /> 'Seem' and 'should' do not solve problems. The bootloader initializes USB and if it is not correctly shut down it still blocks the port.<br /> I can use PA11 on my FreeFlight board as PWM driven motor output, do not use a boot loader and do not touch USB at all. I have no special code to use PA11 as usual port. </p> http://forums.leaflabs.com/topic.php?id=12243#post-27186 Sun, 23 Jun 2013 10:53:12 +0000 jonatan.olofsson 27186@http://forums.leaflabs.com/ <p>It seems to me that the bootloader should not affect the availability of the pin once the elf has been started.. </p> <p>I had an idea that the pc may pull DM low, but I have the same results with the usb fully disconnected..</p> <p>Still out of ideas on this though.. Have anyone used D24 for PWM previously, using e.g. USBSerial.end()? </p> http://forums.leaflabs.com/topic.php?id=12243#post-26960 Tue, 18 Jun 2013 16:08:45 +0000 ala42 26960@http://forums.leaflabs.com/ <p>Try if you can access the pin when using a modified bootloader that uses no USB. Well, you should be able to flash using a different method... </p> http://forums.leaflabs.com/topic.php?id=12243#post-26941 Tue, 18 Jun 2013 01:35:47 +0000 jonatan.olofsson 26941@http://forums.leaflabs.com/ <p>Both the libmaple/usb or wirish/usb_serial.cpp are commented out in the Makefile and rules.mk respectively, and BOARD_HAVE_USB and STM32_HAVE_USB are set to false. Also, USB_DM and USB_DP have been removed from the maple_mini/board.cpp (and 24 added to the PWM list in the same file). Also BOARD_USB_* in board/board.h have been commented out. </p> http://forums.leaflabs.com/topic.php?id=12243#post-26917 Mon, 17 Jun 2013 19:11:24 +0000 ala42 26917@http://forums.leaflabs.com/ <p>Did you also disable setupUSB() ? </p> http://forums.leaflabs.com/topic.php?id=12243#post-26908 Mon, 17 Jun 2013 17:12:21 +0000 jonatan.olofsson 26908@http://forums.leaflabs.com/ <p>Hi,</p> <p>I'm trying to get PWM working on pin D24 on my Maple Mini. In the docs, it is suggested to call USBSerial::end() before activating pwm on this pin, since it is usually occupied by the USB_DM signal. However, in my local libmaple/wirish, I have actively tried to remove all inclusion and instantiation of usb-related code, so SerialUSB is never initialized. Since it still doesn't work, i figure i have missed one of the following;</p> <p>1) Some part of usb is still being configured, grabbing control over the D24 pin.<br /> 2) The initial setup for D24 differs due to its default use, so it isn't initialized as it's sibling gpio/pwm ports.</p> <p>I relly would appreciate any pointers to where to look!</p> <p>Best regards,<br /> Jonatan </p>