Unable to program NRF52840 PDK

RE: Unable to program NRF52840 PDK

Petter Myhre — Thu, 11 May 2017 12:46:41 GMT

Ok. Could you try on another computer?

RE: Unable to program NRF52840 PDK

C. Jimenez — Thu, 11 May 2017 12:24:50 GMT

When I run JLink Commander I get

SEGGER J-Link Commander V6.12a (Compiled Dec  2 2016 16:44:55)
DLL version V6.12a, compiled Dec  2 2016 16:44:26

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 14 2016 16:58:29
Hardware version: V1.00
S/N: 683083406
VTref = 3.300V


Type "connect" to establish a target connection, '?' for help
J-Link>

When I tried to flash with nRF5x-OB-JLink-IF I received the same FAIL.TXT file from earlier. "Error While Connecting to CPU"

RE: Unable to program NRF52840 PDK

Petter Myhre — Thu, 11 May 2017 09:18:06 GMT

Ok. What J-Link version are you using? You can check with nrfjprog -v

Have you tried connecting with J-Link Commander? Does it say something like:

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Nov 14 2016 16:58:29
Hardware version: V1.00
S/N: 683379432
VTref = 3.300V

Also try to reflash the J-Link with nRF5x-OB-JLink-IF found here (drag and drop into removable drive)

RE: Unable to program NRF52840 PDK

C. Jimenez — Wed, 10 May 2017 23:08:15 GMT

C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin\nrfjprog.exe --recover -f nrf52 --log
nrfjprog verion 9.4.0
--------------------------------------------------------------------------------
FUNCTION: open_dll.
FUNCTION: open_dll.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_without_snr.
FUNCTION: enum_emu_snr.
Device "NRF52832_XXAA" selected.
FUNCTION: recover.
FUNCTION: recover.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.
FUNCTION: close_dll.
FUNCTION: close_dll.

RE: Unable to program NRF52840 PDK

Petter Myhre — Wed, 10 May 2017 13:50:28 GMT

What log do you get if you try to --recover with nrfjprog?