cdc_stdio_lib

Library allows a pico-sdk application that uses TinyUSB to add USB serial stdio support

Normally, the pico-sdk will emit an error at compile time if you attempt to enable USB stdio on the USB device port in an application that is using TinyUSB for any reason, including using Pico PIO USB as a USB host. This library copies the essential bits from the pico-sdk's own source code to glue the TinyUSB CDC device driver to the pico-sdk's stdio library.

Requirements

To use this library,

1. In tusb_config.h implement a USB Device interface, enable CFG_TUD_ENABLED and CFG_TUD_CDC
2. Add a CDC interface in the application's device descriptor.
3. The application must first call tud_init() or tusb_init(), then call the function cdc_stdio_lib_init() from this library.
4. Make sure the application periodically calls tud_task().

License and Copyright

As this code is pretty much a copy from the pico-sdk's own source code, the Copyright and License belong to Raspberry Pi (Trading) Ltd. All I did was hack out the parts that prevent it from working with a regular TinyUSB-based application and wrap it in library form. Please obey the terms of the pico-sdk license in LICENSE.TXT when using this code, and note the all caps "AS IS" disclaimer.

None of this implies that Raspberry Pi (Trading) Ltd. is endorsing this library.