Nrfjprog pinreset while connected with rtt viewer

[bds]

When connected with RTT viewer, a  pin reset with nrfjprog shows a J-Link Error popup saying:

J-Link currently uses target interface SWD while current debugger tries to select target interface JTAG.

Is this normal? Can it be avoided?

[Jared]

Hi,

Yes, the nRF52 doesn't support JTAG but SWD.

Best regards

Jared 

[bds]

I understood that, but does it mean a pinreset is not supported while using the SWD interface?

[Jared]

Yes, nrfjprog use the SWD interface to issue a pin reset, this is not supported when the SWD is already in use by the RTT viewer. 

An alternative would be to switch logger backend to UART