TODO:

• README content
• CI / auto-build
• monitor for buffer overflows Serial::overflow() (this also clears the buffer overflow flag)
• (use interrupts for data transfer)
• error detection → reset interface (detach, attach) - micro ros agent sometimes needs a reconnection of the serial port to re-initialize if (TinyUSBDevice.mounted()) { TinyUSBDevice.detach(); delay(10); TinyUSBDevice.attach(); }

Sources

• How (Tiny)USB works: pschatzmann.ch:tinyusb-a-simple-tutorial, beyondlogic.org:usbnutshell
• TinyUSB Vendor interface with arduino-pico core: Adafruit_TinyUSB_Arduino:i2c_tiny_usb_adapter
• Configuring TinyUSB: comparing the tusb_config.h and usb_descriptors.c of a multitude of projects, especially the Adafruit one
• Multiple TinyUSB CDC interfaces: Adafruit_TinyUSB_Arduino:cdc_multi.ino
• Using 7 serial I/Os on the rp2040: Stylesoftware/rpi-pico-2040-how-to-use-all-serial-ports
• Quickly queueing UART data qith interrupts to not overflow buffers: pico-examples:uart_rx/uart_rx_intr.c
• Using the rp2040 as CAN↔USB bridge: trnila/rp2040-can-mcp2515