Remove Serial Port

customcontroller · May 7, 2023, 12:02am

Allow disabling CDC with -DCDC_DISABLED

arduino:master ← DanielGibson:disable-cdc

opened 04:38PM - 06 Jan 21 UTC

This change makes it relatively easy to disable the CDC at compiletime. Disabli…ng it of course means that the serial console won't work anymore, and that you can only flash directly after resetting the board, but I think that's not much of a problem. `CDC_DISABLED` is also used in ArduinoCore-samd for the same purpose, see https://github.com/arduino/ArduinoCore-samd/blob/master/cores/arduino/USB/USBDesc.h#L24-L27 Disabling CDC helps making Arduino-based USB devices work with old or otherwise problematic hardware or software. For example, USB Boot Keyboards don't work with many KVM switches if the CDC sub-devices are there; I'm sure there's other systems with the same problem (BIOS/UEFI implementations? Old operating systems - someone mentioned assistive devices still running Windows XP). Apart from Keyboards, I read that disabling CDC for Arduino-based MIDI devices. based on https://github.com/gdsports/usb-metamorph/tree/master/USBSerPassThruLine See also https://github.com/NicoHood/HID/issues/225 and https://github.com/arduino/Arduino/issues/6387 and https://forum.arduino.cc/index.php?topic=545288.msg3717028#msg3717028

Once disabled, IDE upload stops working. Be sure you can upload using the bootloader. I start the upload then double click the reset button.

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Remove Serial Port

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