USB HID....

[Sparkoids]

Hi guys,

On Flowcode I have got a USB device running as a keyboard and it works perfectly to generate specific "keypresses" from buttons on eBlocks....

Does anyone know if it is possible to edit the HID descriptor to make into USB Midi please?

I'm going to get the Matrix eBlock for MIDI and I have just ordered a MIDI to USB convertor from eBay but on the Aurdino sites they have a USB/MIDI setting for their boards that get rid of the requirement for the interface(s).

If not I'm going to go from ECIO > MIDI eBlock > MIDI Convertor > USB > Computer which is bonkers to have two extra bits of hardware!

Anyone know if this is possible please?


James :-}

Link Here for USB Device Class Definition For MIDI: http://www.usb.org/developers/devclass_docs/midi10.pdf

[Benj]

Hi James,

Does anyone know if it is possible to edit the HID descriptor to make into USB Midi please?

You can't do it simply by editing the HID descriptor as the HID descriptor is basically a set of instructions for the HID class. The USB MIDI class does not use the HID class so you also need to edit the underlying USB descriptor which is hidden away inside the USB library files.

I have looked into this before and was going to make a USB MIDI component but I spent a couple of nights on it and basically got nowhere fast. So it certainly is possible but is a lot of work to achieve. Using the two extra bits of hardware may seem daft but will certainly save a lot of coding effort in the short term.

I'm hoping to do a load of work with USB and components in general when FC v6 comes out and we have the freedom to create components without needing a VB expert to design the component front end. If you need something in the meantime then some of our freelance engineers may be able to help or you could create a topic named help me to create a USB MIDI component and me and the community will try and help where we can.