RPI Pico: USB data lines

[ogogon]

Colleagues, do I understand correctly that if I want to install Pico on my board as a control core, then I will not be able to access the USB data lines through the board connectors?

Ogogon.

[alastairpatrick]

In terms of pads for USB D+ and D- the Pico board has test points TP2 and TP3 but no through holes. The Pimoroni PGA2040 board and perhaps others make USB D+ and D- available as through holes.

[hippy]

There is a "USB_MUXING" register and others within the RP2040 which appear to support routing of USB signals to GPIO pins, but how, and how they can and should be used, I don't believe is documented in the datasheet or elsewhere.

Using "Pico_PIO_USB" capability it is possible to use GPIO pins for USB Device or Host and TinyUSB supports that.

Otherwise it seems it is a case of soldering to test pads on the Pico PCB.

[cleverca22]

There is a "USB_MUXING" register and others within the RP2040 which appear to support routing of USB signals to GPIO pins, but how, and how they can and should be used, I don't believe is documented in the datasheet or elsewhere.

it would also not work under bootsel mode, so you wouldnt be able to re-flash anything easily