composite-device
There are 2 repositories under composite-device topic.
r2axz/bluepill-serial-monster
USB to 3 Port Serial (UART) adapter firmware for STM32 Blue Pill.
nyannkov/nano_midi
usb midi and cdc device running on Longan Nano
There are 2 repositories under composite-device topic.
USB to 3 Port Serial (UART) adapter firmware for STM32 Blue Pill.
usb midi and cdc device running on Longan Nano