Problems to use and program a nRF52832 custom board.

[nemunoz]

hi to everyone!

I am using nRF52832DK with Keil5 and nRFgo Studio to program SoftDevice.

Now I want to program my first custom board, but it looks like I can't connect to it.

When I use the nRFgo Studio I get the next error in bold: "No device detected, or readback protection may be set"

And If I press the Recover button, to remove the readback protection, I get an unknown error.

If I use Keil5, when I press Flash->Download I get: "No Cortex-M SW Device Found" and "Error: Flash Download failed - Target DLL has been cancelled".

And the output terminal:

Is there a way to debug the communication between these programs and the custom board or a way to find where could be the problem?

Thanks in advance!

[Angus]

I assume you are programming from a nRF52 DK board? How are you connected to the DK? the P19 or P20 header?

I have had success using P20 with the following setup:

Custom board powered from battery Custom board SWDIO to DK SWDIO Custom board SWCLK to DK SWCLK Custom board VCC (3v3) to DK VTG Custom board GND to DK And Detect

I had similar issues initially but this configuration seemed to work for me...

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[Stian Røed Hafskjold]

Please describe how you connected you custom board with the JLink.

[nemunoz]

In this case I have this custom board connected through P19, but I also have another connected to P20.

In the P20, I just tried what you told me and I have half success. A lot of time (about 80%) the connection fails but, at least, I finally can connect to one of them. I think the problem are the wires and I had to braid them very well to have this little success.

And yes, I am programming from a nRF52832DK board.

[Stian Røed Hafskjold]

Make sure that the two boards have the same ground. Connect a GND cable from the DK to the custom board.

[nemunoz]

I am connecting this custom board to P19 and powering it with one of the VDD and one GND from P1 in the DK board.

I also have another custom board connected to P20, but the problem to connect to this board are described here.