Date: Wed, 12 Jun 2013 02:20:25 GMT From: Mike Meyer <mwm@mired.org> To: freebsd-gnats-submit@FreeBSD.org Subject: usb/179505: Kernel detaches Arduino Leonardo (and similar) board umodem after the arduino boots Message-ID: <201306120220.r5C2KPj1031229@oldred.freebsd.org> Resent-Message-ID: <201306120230.r5C2UNMc085286@freefall.freebsd.org>
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>Number: 179505 >Category: usb >Synopsis: Kernel detaches Arduino Leonardo (and similar) board umodem after the arduino boots >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-usb >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Jun 12 02:30:00 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Mike Meyer >Release: 9.1-releng >Organization: Meyer Consulting >Environment: FreeBSD bhuda.mired.org 9.1-RELEASE-p3 FreeBSD 9.1-RELEASE-p3 #0 r250692M: Thu May 16 11:14:23 EDT 2013 root@bhuda.mired.org:/usr/src/sys/amd64/compile/BHUDA amd64 >Description: When the Arduino boards provide a umodem device to the host for programming and serial communications with the host from the user software (the software running after boot). The newest boards - starting with the Leonardo - also have the ability to provide a variety of HID devices at different endpoints. The older boards work fine. With the leonardo, the umodem device attaches as the board boots (or resets), and the /dev/ttyU* files are created for it. The device then detaches before or as the user code starts running, meaning the files vanish. >How-To-Repeat: Plug a leonardo board into a USB port on your machine. Reset it if needed. As it reboots (the L led will be blinking), you can see the /dev/tty* files appear. They will be gone after the reboot is finished. >Fix: I don't have a fix. The board can be programmed by hitting reset shortly before running avrdude (so for now, this is a low priority problem). >Release-Note: >Audit-Trail: >Unformatted:
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