Could not find core in Coresight setup nRF52840 ?

[RixtronixLAB]

Dear Members,

I got :

Could not find core in Coresight setup nRF52840 ? with PCA10059, it was working ok before,

Any solution for it ?

Kind regards,

Rixtronix LAB

[RixtronixLAB]

[RixtronixLAB]

Is the chip failed already ?

[Vidar Berg]

Hi,

Please measure the voltage on SWDIO when you have set up the dongle for programming.

The log file should be located in c:/users/rixtronixlab/ where you called nrfjprog from.

[RixtronixLAB]

Hi Vidar,

Thanks for the reply,

V SWDIO = 2.2V

How much should it be ?

Kind regards,

Rixtronix LAB

[RixtronixLAB]

I can see LD2 (RED) is on, very dim.

[Vidar Berg]

The correct IO voltage depends on how you are you powering the dongle (see Power supply options) and the REGOUT0 setting if you use high voltage mode.

[RixtronixLAB]

Hi Vidar,

Thanks for the reply,

I connected Vcc from J-Link to Vbus and GNd to GND,

It was working but now it's not,

Looks like the chip is faulty, do you reckon ?

Kind regards,

Rixtronix