nRF52840 Dongle USB Pins usable for uart?

[mafo]

Hello,
Is it possible to use the USB Pins for Uart? no USB Protrocoll
Would be nice if i can use the USB socket for UART with my other projects so i dont have to create a USB HOST or i have to solder to test pins on the dongle.
Kind regards

[Simonr]

Hi

I might be misunderstanding you, but if you want to use the USB socket for UART communication, how will you be powering the Dongle? We have had a few cases in the past regarding using the nRF52 Dongle for UART communication. Please check out the following cases:

• nRF Dongle stops after implementing Nordic UART service
• How to enable UART COM port on nRF52840 Dongle
• Samples to drive nRF52 Dongle as a serial port

Best regards,

Simon

[Dmitry]

Hi,

as I understood, you're asking how to use D+/D- as TX/RX pins without any USB host at the other side? If so, the answer is - no way.  Theoretically you can do bit-banging TX with DPDMVALUE register, but RX is not possible.

[mafo]

No as dmitry sayed D+/D- as TX RX without USB host.
V+V- will still be used as power source.
Would be nice to have some standard connectors on your modules except 2,54 pin pitch. For faster developing would be great not to use breadbards.
Kind regards

[Simonr]

Okay, thanks for confirming. As Dmitry said, the answer is no in this case. The Dongle indeed has very few readily available GPIOs, and you'll need to solder on any pin headers for it to act as an efficient development board. For development, we recommend using the nRF52 DKs instead, which with their on board debuggers and pin header availability are best suited for an easy development process.

Best regards,

Simon