Greetings!I'm trying to get the Device/ClassDriver/VirtualSerial demo running on my "Pro Micro" ATmega32U4 board[1].The board has no joystick, so I've commented out the Joystick code and replaced the call to CheckJoystickMovement() with:fputs("Hello world\r\n", &USBSerialStream);I.e. my attempt is to have an endless stream of "Hello world" messages printed to the serial device on my Linux machine.The device seems to enumerate successfully. I see the following in dmesg:[ 1719.756322] usb 1-1.3: new full-speed USB device number 27 using ehci_hcd
[ 1719.843258] cdc_acm 1-1.3:1.0: ttyACM0: USB ACM deviceHowever, when I attempt to open /dev/ttyACM0 with minicom, all I get is "Device or resource busy":$ minicom -b 9600 -D /dev/ttyACM0
minicom: cannot open /dev/ttyACM0: Device or resource busyFuses read:avrdude: Device signature = 0x1e9587avrdude: safemode: lfuse reads as DE
avrdude: safemode: hfuse reads as 99
avrdude: safemode: efuse reads as C3I'm running Ubuntu 12.10 with the 3.5.0 Linux kernel.Any hints on what might be wrong?Cheers,- Johannes
Jan 21 23:27:49 FarSite modem-manager[6970]: <info> (ttyACM0) opening serial port...Jan 21 23:27:56 FarSite modem-manager[6970]: <info> (ttyACM0) closing serial port...Jan 21 23:27:56 FarSite modem-manager[6970]: <info> (ttyACM0) serial port closedJan 21 23:27:56 FarSite modem-manager[6970]: <warn> Couldn't probe for capabilities, probably not a GSM or CDMA modem
SUBSYSTEM=="usb", ATTR{idVendor}=="1b4f", ATTR{idProduct}=="9205", MODE="0660", GROUP="plugdev", ENV{ID_MM_DEVICE_IGNORE}="1"
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