Hi, I'm looking to use an UART interface as a MIDI in/out port. Since MIDI is an asynchronous serial interface just like UART, and provided a given UART controller is able to operate at 31.25 kbps (in my case, it is) a UART port can be transformed into a MIDI port by adding some hardware components (e.g. an optocopuler) to it, I would have expected to find a generic MIDI<->UART adapter layer in the kernel that bridges the ALSA MIDI interface with UART drivers and allows to operate UARTs as MIDI ports. But apparently there is no such generic adapter, the closest driver I found is for the UART 16550 but this is specific to a type of UART controller different from the one in the platform I'm using (which is i.MX6). So how would you approach the task of writing a MIDI driver that uses UART behind the scenes? Am I correct in assuming that I have to use the RawMIDI interface (as the UART 16550 driver does) to make my MIDI port available to ALSA applications? Or is there a better alternative?
Thanks, Francesco