external nRF5340 getting locked up

RE: external nRF5340 getting locked up

Manu — Thu, 27 Aug 2020 03:40:49 GMT

Thanks Dushan, this helped me too!

I think this behavior should be classifed as an errata/bug - selecting a different power supply mechanism _should not_ result in a bricked unit.

RE: external nRF5340 getting locked up

allymolly91 — Thu, 20 Aug 2020 19:40:58 GMT

This was super useful - thanks! I wish Nordic/Zephyr had this documented somewhere.

RE: external nRF5340 getting locked up

Dushan_zvertech — Wed, 06 May 2020 08:06:13 GMT

If there is no external coil for DCDC and one enables the DCDC the device will become responsive. The default settings for example software for nRF5430 board is expecting an external DCDC so if the target board doesn't have the coils once you put the project on the device it will become unresponsive.

In order to recover the device one needs to apply voltage on the APP (1.25V on DECD) and NET (1.05V on DECRF) core decoupling capacitors to get the cores back online. Then write the new software that doesnt use the DCDC and the device should be ok

RE: external nRF5340 getting locked up

Amanda Hsieh — Tue, 05 May 2020 07:04:39 GMT

Good to hear the success. I have removed the attachments as you want. You can approve the case go to the public.

-Amanda H.

RE: external nRF5340 getting locked up

Dushan_zvertech — Mon, 04 May 2020 12:43:57 GMT

i have solved the issue

the problem was that the dcdc is enabled by default in software on nrf53 dk and i was using this as a base for my project. nrf53 has no mechanism to recover if the coil in not present so the device becomes unresponsive. i have solved it by applying voltage externally to the cores and reprogramming them with correct setting.

how can we make this post public without the attachements and other posts ecxept the question and the solution

RE: external nRF5340 getting locked up

Dushan_zvertech — Thu, 30 Apr 2020 10:13:27 GMT

Hi,

Is there a problem with software as I can flash it first time?

Is zephyr expecting DCDC to run instead of LDO and then it would lock up the device as it would loose power as there is no DCDC implemented? Is there a bare metal software i can test with or configure zephyr? Is zephyr expecting a certain crystal?

Attached is the log from the new nrfjprog

2020-Apr-30 12:09:17 --------------------------------------------------------------------------------
2020-Apr-30 12:09:17 nrfjprog -f UNKNOWN --recover --log
2020-Apr-30 12:09:17 nrfjprog version 10.8.0
2020-Apr-30 12:09:17 --------------------------------------------------------------------------------
2020-Apr-30 12:09:17 nRF_logger_open
2020-Apr-30 12:09:17 nRF_logger_open: nRFJProg logger opened to callback at address 0X4D0940
2020-Apr-30 12:09:17 nRF_open_dll
2020-Apr-30 12:09:17 nRF_open_dll: Load library at "C:\\Program Files (x86)\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\JLINKARM_UNKNOWN_NRFJPROG.dll".

2020-Apr-30 12:09:17 . nRFXX_logger_open
2020-Apr-30 12:09:17 . nRFXX_logger_open: nRFJProg logger opened to callback at address 0X6E81B850
2020-Apr-30 12:09:17 . . Segger_logger_open
2020-Apr-30 12:09:17 . . Segger_logger_open: nRFJProg logger opened to callback at address 0X6E7DC8A0
2020-Apr-30 12:09:17 . . Segger_open_dll
2020-Apr-30 12:09:17 . . Segger_open_dll: Load library at "C:\\Program Files (x86)\\SEGGER\\JLink\\JLinkARM.dll".

2020-Apr-30 12:09:17 . . . Segger_dll_version
2020-Apr-30 12:09:17 . . Segger_set_core_data
2020-Apr-30 12:09:17 nRF_enum_emu_snr
2020-Apr-30 12:09:17 . nRFXX_enum_emu_snr
2020-Apr-30 12:09:17 . . Segger_enum_emu_snr
2020-Apr-30 12:09:17 . . . Segger_enum_emu_snr
2020-Apr-30 12:09:17 . . . . Segger_get_num_emus
2020-Apr-30 12:09:17 nRF_connect_to_emu_with_snr
2020-Apr-30 12:09:17 . nRFXX_connect_to_emu_with_snr
2020-Apr-30 12:09:17 . . Segger_connect_to_emu_with_snr
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu
2020-Apr-30 12:09:17 . . . Segger_enum_emu_snr
2020-Apr-30 12:09:17 . . . . Segger_get_num_emus
2020-Apr-30 12:09:17 . . . Segger_connect_to_emu_with_snr
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: Segger logging enabled with callback at 0x1853738032.

2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:019.748
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO Firmware: J-Link OB-K22-NordicSemi compiled Jan 21 2020 17:33:01
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:021.366
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO Decompressing FW timestamp took 176 us
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:037.400
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO Hardware: V1.00
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:038.842
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO S/N: 960136811
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:039.972
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO OEM: SEGGER
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:041.033
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:043.504
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO TELNET listener socket opened on port 19021
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:044.885
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Starting webserver
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:046.060
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Webserver running on local port 19080
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:047.138
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 31.450ms returns O.K.
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:048.205
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_GetHWStatus(...)
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:049.488
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.832ms returns 0x00
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:050.569
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("SetRestartOnClose = 0", ...).
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:051.795
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 0.625ms returns 0x01
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:053.018
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("DisableFlashDL", ...).
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:054.220
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 0.597ms returns 0x00
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:055.393
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:056.584
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 0.600ms returns 0x00
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:057.813
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetHookUnsecureDialog(...)
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:059.033
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.816ms returns 0
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:060.249
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_TIF_Select(JLINKARM_TIF_SWD)
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:062.174
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 2.550ms returns 0x00
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:063.371
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetSpeed(2000)
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO T30B8 000:064.553
2020-Apr-30 12:09:17 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.771ms
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:066.269
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("CORESIGHT_SetIndexAHBAPToUse = 0", ...).
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:067.388
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO - 0.627ms returns 0x00
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:068.713
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("device = Cortex-M4", ...).
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:077.455
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:079.832
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully.
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:151.322
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO Device "CORTEX-M4" selected.
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO T30B8 000:155.296
2020-Apr-30 12:09:17 . . . . . Segger_load_core_data: JLink INFO - 86.052ms returns 0x00
2020-Apr-30 12:09:17 nRF_read_connected_emu_snr
2020-Apr-30 12:09:17 . nRFXX_read_connected_emu_snr
2020-Apr-30 12:09:17 . . Segger_read_connected_emu_snr
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:159.100
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:160.493
2020-Apr-30 12:09:17 . . . Segger_is_connected_to_emu: JLink INFO - 1.973ms returns 0x01
2020-Apr-30 12:09:17 nRF_read_device_family
2020-Apr-30 12:09:17 . nRFXX_read_device_family
2020-Apr-30 12:09:17 . . Segger_is_connected_to_emu
2020-Apr-30 12:09:17 . . Segger_is_connected_to_emu: JLink INFO T30B8 000:163.364
2020-Apr-30 12:09:17 . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Apr-30 12:09:17 . . Segger_is_connected_to_emu: JLink INFO T30B8 000:164.537
2020-Apr-30 12:09:17 . . Segger_is_connected_to_emu: JLink INFO - 1.738ms returns 0x01
2020-Apr-30 12:09:17 . . : JLink INFO T30B8 000:165.666
2020-Apr-30 12:09:17 . . : JLink INFO JLINK_Lock()
2020-Apr-30 12:09:17 . . Segger_read_debug_port_idr
2020-Apr-30 12:09:17 . . . Segger_read_debug_port_register
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register
2020-Apr-30 12:09:17 . . . . . Segger_coresight_configure
2020-Apr-30 12:09:17 . . . . . Segger_coresight_configure: JLink INFO T30B8 000:168.992
2020-Apr-30 12:09:17 . . . . . Segger_coresight_configure: JLink INFO JLINK_CORESIGHT_Configure()
2020-Apr-30 12:09:17 . . . . . Segger_coresight_configure: JLink INFO T30B8 000:271.141
2020-Apr-30 12:09:17 . . . . . Segger_coresight_configure: JLink INFO - 103.091ms returns 0
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO T30B8 000:272.793
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x00)
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO T30B8 000:274.763
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO failed
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO T30B8 000:276.058
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLink INFO - 3.926ms returns -1
2020-Apr-30 12:09:17 . . . . Segger_read_debug_port_register: JLinkARM.dll reported "-1", an unknown error.

2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action
2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.

2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: JLink INFO T30B8 000:279.244
2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: JLink INFO T30B8 000:281.090
2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: JLink INFO - 2.465ms returns -1
2020-Apr-30 12:09:17 . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.

2020-Apr-30 12:09:17 . . : JLink INFO T30B8 000:282.861
2020-Apr-30 12:09:17 . . : JLink INFO JLINK_Unlock()
2020-Apr-30 12:09:17 nRF_close_dll
2020-Apr-30 12:09:17 . nRFXX_close_dll
2020-Apr-30 12:09:17 . . Segger_close
2020-Apr-30 12:09:17 . . . Segger_disconnect_from_emu
2020-Apr-30 12:09:17 . . . . Segger_is_connected_to_emu
2020-Apr-30 12:09:18 . . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:286.764
2020-Apr-30 12:09:18 . . . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Apr-30 12:09:18 . . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:287.894
2020-Apr-30 12:09:18 . . . . Segger_is_connected_to_emu: JLink INFO - 1.713ms returns 0x01
2020-Apr-30 12:09:18 . . . . Segger_disconnect_from_emu
2020-Apr-30 12:09:18 . . . . . Segger_is_connected_to_device
2020-Apr-30 12:09:18 . . . . . Segger_is_connected_to_device: JLink INFO T30B8 000:290.225
2020-Apr-30 12:09:18 . . . . . Segger_is_connected_to_device: JLink INFO JLINK_IsConnected()
2020-Apr-30 12:09:18 . . . . . Segger_is_connected_to_device: JLink INFO T30B8 000:291.337
2020-Apr-30 12:09:18 . . . . . Segger_is_connected_to_device: JLink INFO - 1.667ms returns FALSE
2020-Apr-30 12:09:18 . . . . . Segger_is_debug_region_powered
2020-Apr-30 12:09:18 . . . . . . Segger_read_debug_port_register
2020-Apr-30 12:09:18 . . . . . . . Segger_is_connected_to_emu
2020-Apr-30 12:09:18 . . . . . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:294.119
2020-Apr-30 12:09:18 . . . . . . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Apr-30 12:09:18 . . . . . . . Segger_is_connected_to_emu: JLink INFO T30B8 000:295.428
2020-Apr-30 12:09:18 . . . . . . . Segger_is_connected_to_emu: JLink INFO - 1.877ms returns 0x01
2020-Apr-30 12:09:18 . . . . . . Segger_read_debug_port_register: JLink INFO T30B8 000:296.567
2020-Apr-30 12:09:18 . . . . . . Segger_read_debug_port_register: JLink INFO JLINK_Lock()
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register: JLink INFO T30B8 000:298.264
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register: JLink INFO T30B8 000:299.992
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register: JLink INFO - 2.303ms returns -1
2020-Apr-30 12:09:18 . . . . . . . Segger_write_debug_port_register: JLinkARM.dll reported "-1", an unknown error.

2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action
2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.

2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: JLink INFO T30B8 000:302.919
2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: JLink INFO T30B8 000:304.733
2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: JLink INFO - 2.411ms returns -1
2020-Apr-30 12:09:18 . . . . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.

2020-Apr-30 12:09:18 . . . . . . Segger_read_debug_port_register: JLink INFO T30B8 000:306.510
2020-Apr-30 12:09:18 . . . . . . Segger_read_debug_port_register: JLink INFO JLINK_Unlock()
2020-Apr-30 12:09:18 . . . . Segger_disconnect_from_emu: JLink INFO T30B8 000:321.354
2020-Apr-30 12:09:18 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Close()
2020-Apr-30 12:09:18 . . Segger_close: Freeing Library.

2020-Apr-30 12:09:18 nRF_close_dll: Freeing Library.

RE: external nRF5340 getting locked up

Amanda Hsieh — Thu, 30 Apr 2020 09:56:42 GMT

Hi,

[quote user=""]nrfjprog verion 9.7.1[/quote]

The nrfjprog supports nRF5340 from v10.4. Could you use the latest version of nrfjprog (v10.8)? and provide the log of the "nrfjprog -f UNKNOWN --recover --log" again.

-Amanda H.

RE: external nRF5340 getting locked up

Dushan_zvertech — Tue, 28 Apr 2020 13:57:30 GMT

Hi,

Just one more observation. When I do an erase on the dev board and load the firmware the very first attempt to debug would result in the execution going to the fault_s.S followed by disconnection of the programmer. However the software starts running on the dev board, while it doesn't on the external board

Dusan

RE: external nRF5340 getting locked up

Dushan_zvertech — Tue, 28 Apr 2020 13:12:00 GMT

Hi,

Thank you for your quick response.

The board is supplied form a separate supply at 3.3V

I am uploading the page of the schematic where the nRF is and you can also see which pins are used. I had to change the names but you can see the functionality.

I find it very odd that it can be programmed only once, a new board is totally responsive over SWD. I can query it, read things out, erase it but as soon as I put the compiled software it stops responding and locks itself up. Is there a bare metal example without zephyr that I could try to test with? Are there special pins zephyr is expecting? Do I have to have the network core programmed as well?

RE: external nRF5340 getting locked up

Amanda Hsieh — Tue, 28 Apr 2020 11:43:00 GMT

Hi,

Did you power the external board directly? And is it running at the same voltage level as the nRF5340 PDK?

Could you upload the schematic of the custom board? I made this case private. Your files are only shared with us (Nordic).

-Amanda H.