RE: How to use a black magic probe on a nrf5340 DK

Kazi Afroza Sultana — Mon, 25 Sep 2023 13:21:39 GMT

Hello,

The Debug in connector (P18) makes it possible to connect external debuggers for debugging when the interface MCU USB cable is not connected, or the Development Kit (DK) is in nRF only mode.

You should connect the bluepill with P18 pin of the nRF5340 DK. The voltage supported by external debugging/programming is VDD voltage. Normally, this is 3 V when running from USB. But if the onboard nRF5340 SoC is supplied from either USB or lithium-ion (Li-ion) and the nRF power source switch (SW9) is in either Li-Po or USB position, then the VDD can be set by the nRF5340 firmware. Make sure the voltage level of the external board matches the VDD of the nRF5340 DK.

Thanks.

RE: How to use a black magic probe on a nrf5340 DK

Kazi Afroza Sultana — Mon, 25 Sep 2023 10:23:13 GMT

Hello,

I have started looking at your case and I will get back to you shortly.

Thanks.

Kazi