Can't connect to custom nrf52 board with J-LINK

[navarrocantero]

We come from here : 

https://devzone.nordicsemi.com/f/nordic-q-a/35180/error-with-nrf52dk-and-mac-os-hs

Now, i have a new development kit and i can program it but now i have a problem with the J-LINK connection, i cant connect with my nordic 58323 custom board 

I have tried from j-link, and j-link commander, and nrfjprog --recover, nothing works :( 

I have tried with a few usb wires too, and a few laptops with differents environments (windows, mac)

Here is the  nrfjprog --recover log :

nrfjprog --recover --log

nrfjprog version 9.7.3

--------------------------------------------------------------------------------

nRF_open_dll

. nRF52_open_dll

. . nRF52_dll_version

nRF_enum_emu_snr

. nRF52_enum_emu_snr

. . nRF52_enum_emu_snr

nRF_enum_emu_snr

. nRF52_enum_emu_snr

. . nRF52_enum_emu_snr

nRF_connect_to_emu_with_snr

. nRF52_connect_to_emu_with_snr

. . nRF52_is_connected_to_emu

. . nRF52_enum_emu_snr

. . nRF52_connect_to_emu_with_snr

. . . nRF52_connect_to_emu_without_snr

. . . nRF52_connect_to_emu_without_snr: JLink: Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jan 12 2018 16:05:20

. . . nRF52_connect_to_emu_without_snr: JLink: Hardware: V1.00

. . . nRF52_connect_to_emu_without_snr: JLink: S/N: 682010721

. . . nRF52_connect_to_emu_without_snr: JLink: TELNET listener socket opened on port 19021

. . . nRF52_connect_to_emu_without_snr: JLink: WEBSRV  Starting webserver

. . . nRF52_connect_to_emu_without_snr: JLink: (0015ms, 0020ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:006

. . . nRF52_connect_to_emu_without_snr: JLink: WEBSRV Webserver running on local port 19080

. . . nRF52_connect_to_emu_without_snr: JLink: (0015ms, 0020ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:006

. . . nRF52_connect_to_emu_without_snr: JLink:   returns O.K.

. . . nRF52_connect_to_emu_without_snr: JLink: (0016ms, 0021ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:022

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_GetHWStatus(...)

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x00

. . . nRF52_connect_to_emu_without_snr: JLink: (0000ms, 0021ms total) 

. . . nRF52_connect_to_emu_without_snr: There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:023

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_ExecCommand("Device = NRF52832_xxAA", ...).

. . . nRF52_connect_to_emu_without_snr: JLink: /Applications/SEGGER/JLink/JLinkDevices.xml evaluated successfully.

. . . nRF52_connect_to_emu_without_snr: JLink: Device "NRF52832_XXAA" selected.

. . . nRF52_connect_to_emu_without_snr: JLink: Device "NRF52832_XXAA" selected.

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x00

. . . nRF52_connect_to_emu_without_snr: JLink: (0267ms, 0288ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:290

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_ExecCommand("SetRestartOnClose = 0", ...).

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x01

. . . nRF52_connect_to_emu_without_snr: JLink: (0000ms, 0288ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:290

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_ExecCommand("DisableFlashDL", ...).

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x00

. . . nRF52_connect_to_emu_without_snr: JLink: (0001ms, 0289ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:291

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...).

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x01

. . . nRF52_connect_to_emu_without_snr: JLink: (0000ms, 0289ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:291

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x00

. . . nRF52_connect_to_emu_without_snr: JLink: (0000ms, 0289ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:291

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_TIF_Select(JLINKARM_TIF_SWD)

. . . nRF52_connect_to_emu_without_snr: JLink:   returns 0x00

. . . nRF52_connect_to_emu_without_snr: JLink: (0004ms, 0293ms total) 

. . . nRF52_connect_to_emu_without_snr: JLink: TADEA7380 000:295

. . . nRF52_connect_to_emu_without_snr: JLink: JLINK_SetSpeed(4000)

. . . nRF52_connect_to_emu_without_snr: JLink: (0001ms, 0294ms total) 

nRF_recover

. nRF52_recover

. . nRF52_is_connected_to_emu

. . nRF52_is_connected_to_emu: JLink: TADEA7380 000:297

. . nRF52_is_connected_to_emu: JLink: JLINK_IsOpen()

. . nRF52_is_connected_to_emu: JLink:   returns 0x01

. . nRF52_is_connected_to_emu: JLink: (0000ms, 0294ms total) 

. . nRF52_is_connected_to_device

. . nRF52_is_connected_to_device: JLink: TADEA7380 000:297

. . nRF52_is_connected_to_device: JLink: JLINK_IsConnected()

. . nRF52_is_connected_to_device: JLink:   returns FALSE

. . nRF52_is_connected_to_device: JLink: (0000ms, 0294ms total) 

. . nRF52_readback_status

. . . nRF52_is_ctrl_ap_available

. . . . nRF52_read_access_port_register

. . . . . nRF52_coresight_configure

. . . . . nRF52_coresight_configure: JLink: TADEA7380 000:298

. . . . . nRF52_coresight_configure: JLink: JLINK_CORESIGHT_Configure()

. . . . . nRF52_coresight_configure: JLink:   returns 0

. . . . . nRF52_coresight_configure: JLink: (0102ms, 0396ms total) 

. . . . . nRF52_power_debug_and_system_regions

. . . . . . nRF52_write_debug_port_register

. . . . . . nRF52_write_debug_port_register: JLink: TADEA7380 000:402

. . . . . . nRF52_write_debug_port_register: JLink: JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)

. . . . . . nRF52_write_debug_port_register: JLink:   returns -1

. . . . . . nRF52_write_debug_port_register: JLink: (0001ms, 0398ms total) 

. . . . . . nRF52_write_debug_port_register: JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.

. . . . . nRF52_power_debug_and_system_regions: JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.

nRF_close_dll

. nRF52_close_dll

. . nRF52_is_connected_to_emu

. . nRF52_is_connected_to_emu: JLink: TADEA7380 000:405

. . nRF52_is_connected_to_emu: JLink: JLINK_IsOpen()

. . nRF52_is_connected_to_emu: JLink:   returns 0x01

. . nRF52_is_connected_to_emu: JLink: (0000ms, 0398ms total) 

. . nRF52_disconnect_from_emu

. . . nRF52_is_connected_to_device

. . . nRF52_is_connected_to_device: JLink: TADEA7380 000:406

. . . nRF52_is_connected_to_device: JLink: JLINK_IsConnected()

. . . nRF52_is_connected_to_device: JLink:   returns FALSE

. . . nRF52_is_connected_to_device: JLink: (0000ms, 0399ms total) 

. . . nRF52_unpower_debug_and_system_regions

. . nRF52_disconnect_from_emu: JLink: TADEA7380 000:419

. . nRF52_disconnect_from_emu: JLink: JLINK_Close()

can anyone help me ?

[Håkon Alseth]

If your board is in an assert-loop (RESET loop) occurring very early in the program, it might be hard to recover, as the debugger might not be able to connect fast enough before the nRF does a soft-reset. To avoid this, you should add the "DEBUG" flag when developing, as this would enable blocking assertions instead.

What I would recommend is that you make a small script and loop over "nrfjprog --recover", here in bash (as you're using MacOS):

#!/bin/bash

while [ 1 ]
do
nrfjprog --recover -f NRF52
done

When running this script (CTRL+C to exit it), you continuously toggle the power to your external board (not the DK itself) by connecting/disconnecting the power line from the DK to the custom_board.

Since you have an am-meter connected, you can plug/unplug one of the leads there.

 

Best regards,

Håkon

[navarrocantero]

Thanks for your reply and your Script.

It has not worked, but was a really solution. I think that if your scripts has not work, my nr5x from my custom boards are died.

If you have something more Im here.

Anyways a lot of thanks !