nRF52810/Taiyo Yuden EYSLCNZWW problem with nRFGo Studio

RE: nRF52810/Taiyo Yuden EYSLCNZWW problem with nRFGo Studio

Bobo — Tue, 06 Nov 2018 13:32:22 GMT

I solved my problem. I was actually using a chinese JLink clone and it had been bricked/blocked (probably due to the firmware update), and hence was not able to connect to the target no matter what.

I changed my Segger JLink and it worked just fine.

Thanks a lot,

Bobo

RE: nRF52810/Taiyo Yuden EYSLCNZWW problem with nRFGo Studio

Marjeris Romero — Wed, 31 Oct 2018 14:45:56 GMT

Hi,

Have you check that you have connected SWDIO and SWDCLK right? Do you have the possibility to get a trace and see what happen to these lines when you try to program the module?

The datasheet of the EYSLCNZWW module shows a reference design for communicating with a J-link Lite, here you see that SWDIO is pin 14 and SWDCLK is pin 15.

You can also send a pdf of the schematic files of the custom board.

Best Regards,

Marjeris

RE: nRF52810/Taiyo Yuden EYSLCNZWW problem with nRFGo Studio

Bobo — Tue, 30 Oct 2018 14:14:10 GMT

Custom board is powered with external DC power source between 4 and 5V.
Connection to the Segger debugger is through a 5pin headers connector (swdclk, swdio, vtref, gnd, 5V) which is connected to the corresponding pins of the 20pin JTAG connector with a custom made wire.
The BLE module Taiyo Yuden EYSLCNZWW (and the nRF52 inside) is powered by a dedicated VCC nRF which voltage is 2.5V (fixed thanks to a regulator).

Thanks

RE: nRF52810/Taiyo Yuden EYSLCNZWW problem with nRFGo Studio

Marjeris Romero — Tue, 30 Oct 2018 13:52:02 GMT

Hi,

Could you explain a little bit more about your connection setup?

Best Regards,

Marjeris