Hello, I'm working on a custom board, and I use JLink OB as programmer. Whenever I try to connect to nRF52811 on the board, this happens:

I check the connections, everything looks fine, Could It be because of the firmware of my Jlink OB?
Hello, I'm working on a custom board, and I use JLink OB as programmer. Whenever I try to connect to nRF52811 on the board, this happens:

I check the connections, everything looks fine, Could It be because of the firmware of my Jlink OB?
Hi,
Whenever I try to connect to nRF52811 on the board
Looking at the screenshot attached, you seem to be using a project that is configured to be used for the nRF52840.
Please try the pca10056e project instead. For the ble_app_blinky project, see the project in the folder SDK_folder\examples\ble_peripheral\ble_app_blinky\pca10056e\s112\ses
You might find the Developing for nRF52811 user guide useful. See this link: infocenter.nordicsemi.com/.../nrf52811_user_guide.html
Hi,
Whenever I try to connect to nRF52811 on the board
Looking at the screenshot attached, you seem to be using a project that is configured to be used for the nRF52840.
Please try the pca10056e project instead. For the ble_app_blinky project, see the project in the folder SDK_folder\examples\ble_peripheral\ble_app_blinky\pca10056e\s112\ses
You might find the Developing for nRF52811 user guide useful. See this link: infocenter.nordicsemi.com/.../nrf52811_user_guide.html

Unfortunately it is the same as before.
bardia3000 said:Unfortunately it is the same as before.
Are you able to recover the device using nrfjprog ?
nrfjprog --recover
What voltage are you powering the nRF52811 with?

No I can't recover the device.
nRF52811 is powering with 1v8, by the way I checked the programmer, It can program a nrf52832 (powered with 1v8) on another board correctly!
I also tried Segger J-Flash (and I change the programmer device): Here is the result of Log:
Connecting ...
- Connecting via USB to probe/ programmer device 0
- Probe/ Programmer firmware: J-Link V9 compiled Jun 2 2222 22:22:22
- Device "NRF52811_XXAA" selected.
- Target interface speed: 4000 kHz (Fixed)
- VTarget = 1.790V
- InitTarget() start
- InitTarget() end
- InitTarget() start
- InitTarget() end
- ERROR: Failed to connect.
Could not establish a connection to target.
and after I changed the speed to auto mode:
Connecting ...
- Connecting via USB to probe/ programmer device 0
- Probe/ Programmer firmware: J-Link V9 compiled Jun 2 2222 22:22:22
- Device "NRF52811_XXAA" selected.
- InitTarget() start
- InitTarget() end
- InitTarget() start
- InitTarget() end
- Target interface speed: 200 kHz (Auto)
- VTarget = 1.815V
- InitTarget() start
- InitTarget() end
- InitTarget() start
- InitTarget() end
- ERROR: Failed to connect.
Could not establish a connection to target.
I also run "it as administrator" with J-link OB:
and this is the log file:
2020-Jul-14 09:42:48 --------------------------------------------------------------------------------
2020-Jul-14 09:42:48 nrfjprog -f nrf52 --recover --log
2020-Jul-14 09:42:48 nrfjprog version 10.9.0
2020-Jul-14 09:42:48 --------------------------------------------------------------------------------
2020-Jul-14 09:42:48 nRF_logger_open
2020-Jul-14 09:42:48 nRF_logger_open: nRFJProg logger opened to callback at address 0X7FF68AC733C0
2020-Jul-14 09:42:48 nRF_open_dll
2020-Jul-14 09:42:48 nRF_open_dll: Load library at "C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\JLINKARM_NRF52_NRFJPROG.dll".
2020-Jul-14 09:42:48 . nRF52_logger_open
2020-Jul-14 09:42:48 . nRF52_logger_open: nRFJProg logger opened to callback at address 0X7FFEE7F2E520
2020-Jul-14 09:42:48 . nRF52_open
2020-Jul-14 09:42:48 . . Segger_logger_open
2020-Jul-14 09:42:48 . . Segger_logger_open: nRFJProg logger opened to callback at address 0X7FFEA5628F00
2020-Jul-14 09:42:48 . . Segger_open_dll
2020-Jul-14 09:42:48 . . Segger_open_dll: No J-Link DLL path was provided. Attempting to auto detect.
2020-Jul-14 09:42:48 . . Segger_open_dll: Load library at "C:\\Program Files (x86)\\SEGGER\\JLink\\JLink_x64.dll".
2020-Jul-14 09:42:48 . . . Segger_dll_version
2020-Jul-14 09:42:48 nRF_enum_emu_snr
2020-Jul-14 09:42:48 . nRF52_enum_emu_snr
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu
2020-Jul-14 09:42:48 . . Segger_enum_emu_snr
2020-Jul-14 09:42:48 . . . Segger_enum_emu_snr
2020-Jul-14 09:42:48 . . . . Segger_get_num_emus
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu
2020-Jul-14 09:42:48 nRF_connect_to_emu_with_snr
2020-Jul-14 09:42:48 . nRF52_connect_to_emu_with_snr
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu
2020-Jul-14 09:42:48 . . Segger_connect_to_emu_with_snr
2020-Jul-14 09:42:48 . . . Segger_is_connected_to_emu
2020-Jul-14 09:42:48 . . . Segger_enum_emu_snr
2020-Jul-14 09:42:48 . . . . Segger_get_num_emus
2020-Jul-14 09:42:48 . . . Segger_connect_to_emu_with_snr
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: Segger logging enabled with callback at 0x140731673258320.
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:034.836
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:040.581
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO Hardware: V7.00
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:044.140
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO S/N: 20090928
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:047.711
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO OEM: SEGGER
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:051.886
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO Feature(s): RDI,FlashDL,FlashBP,JFlash,GDB
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:056.481
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO TELNET listener socket opened on port 19021
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:059.831
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Starting webserver
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:062.929
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Webserver running on local port 19080
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:065.916
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 35.798ms returns O.K.
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:069.130
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_Lock()
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:072.217
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_GetHWStatus(...)
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:075.463
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 4.781ms returns 0x00
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:078.537
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("SetRestartOnClose = 0", ...).
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:081.667
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.360ms returns 0x01
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:084.439
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("DisableFlashDL", ...).
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:087.531
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.389ms returns 0x00
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:090.283
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:093.068
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.370ms returns 0x00
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:095.802
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetHookUnsecureDialog(...)
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:098.577
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 4.167ms returns 0
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:101.416
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_TIF_Select(JLINKARM_TIF_SWD)
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:104.830
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 4.925ms returns 0x00
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:107.878
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetSpeed(2000)
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO T0960 000:117.521
2020-Jul-14 09:42:48 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 11.138ms
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:122.384
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("CORESIGHT_SetIndexAHBAPToUse = 0", ...).
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:125.299
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO - 1.408ms returns 0x00
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:128.120
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("device = nRF52", ...).
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:138.382
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:142.073
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully.
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:190.854
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO Device "NRF52" selected.
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO T0960 000:196.819
2020-Jul-14 09:42:48 . . . . . Segger_load_core_data: JLink INFO - 67.355ms returns 0x00
2020-Jul-14 09:42:48 . . Segger_read_debug_port_idr
2020-Jul-14 09:42:48 . . . Segger_read_debug_port_register
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register
2020-Jul-14 09:42:48 . . . . . Segger_coresight_configure
2020-Jul-14 09:42:48 . . . . . Segger_coresight_configure: JLink INFO T0960 000:205.716
2020-Jul-14 09:42:48 . . . . . Segger_coresight_configure: JLink INFO JLINK_CORESIGHT_Configure()
2020-Jul-14 09:42:48 . . . . . Segger_coresight_configure: JLink INFO T0960 000:210.634
2020-Jul-14 09:42:48 . . . . . Segger_coresight_configure: JLink INFO - 6.649ms returns 0
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO T0960 000:213.808
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x00)
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO T0960 000:217.104
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO failed
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO T0960 000:220.181
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLink INFO - 7.832ms returns -1
2020-Jul-14 09:42:48 . . . . Segger_read_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: JLink INFO T0960 000:228.545
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: JLink INFO T0960 000:231.819
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: JLink INFO - 4.831ms returns -1
2020-Jul-14 09:42:48 . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:42:48 . . : JLink INFO T0960 000:236.521
2020-Jul-14 09:42:48 . . : JLink INFO JLINK_Unlock()
2020-Jul-14 09:42:48 nRF_close_dll
2020-Jul-14 09:42:48 . nRF52_close
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu: JLink INFO T0960 000:245.394
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu: JLink INFO T0960 000:248.423
2020-Jul-14 09:42:48 . . Segger_is_connected_to_emu: JLink INFO - 4.517ms returns 0x01
2020-Jul-14 09:42:48 . . : JLink INFO T0960 000:251.925
2020-Jul-14 09:42:48 . . : JLink INFO JLINK_Lock()
2020-Jul-14 09:42:48 . . Segger_close
2020-Jul-14 09:42:48 . . . Segger_disconnect_from_emu
2020-Jul-14 09:42:48 . . . . Segger_disconnect_from_emu
2020-Jul-14 09:42:48 . . . . . Segger_is_connected_to_device
2020-Jul-14 09:42:48 . . . . . Segger_is_connected_to_device: JLink INFO T0960 000:261.046
2020-Jul-14 09:42:48 . . . . . Segger_is_connected_to_device: JLink INFO JLINK_IsConnected()
2020-Jul-14 09:42:48 . . . . . Segger_is_connected_to_device: JLink INFO T0960 000:264.001
2020-Jul-14 09:42:48 . . . . . Segger_is_connected_to_device: JLink INFO - 4.433ms returns FALSE
2020-Jul-14 09:42:48 . . . . . Segger_is_debug_region_powered
2020-Jul-14 09:42:48 . . . . . . Segger_read_debug_port_register
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register: JLink INFO T0960 000:271.479
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register: JLink INFO T0960 000:274.797
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register: JLink INFO - 4.912ms returns -1
2020-Jul-14 09:42:48 . . . . . . . Segger_write_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: JLink INFO T0960 000:282.579
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: JLink INFO T0960 000:285.920
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: JLink INFO - 4.866ms returns -1
2020-Jul-14 09:42:48 . . . . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:42:48 . . . . Segger_disconnect_from_emu: JLink INFO T0960 000:290.535
2020-Jul-14 09:42:48 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Unlock()
2020-Jul-14 09:42:48 . . . . Segger_disconnect_from_emu: JLink INFO T0960 000:300.588
2020-Jul-14 09:42:48 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Close()
2020-Jul-14 09:42:48 . . Segger_close: Freeing Library.
2020-Jul-14 09:42:48 nRF_close_dll: Freeing Library.
2020-Jul-14 09:47:44 --------------------------------------------------------------------------------
2020-Jul-14 09:47:44 nrfjprog -f nrf52 --recover --log
2020-Jul-14 09:47:44 nrfjprog version 10.9.0
2020-Jul-14 09:47:44 --------------------------------------------------------------------------------
2020-Jul-14 09:47:44 nRF_logger_open
2020-Jul-14 09:47:44 nRF_logger_open: nRFJProg logger opened to callback at address 0X7FF68AC733C0
2020-Jul-14 09:47:44 nRF_open_dll
2020-Jul-14 09:47:44 nRF_open_dll: Load library at "C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\JLINKARM_NRF52_NRFJPROG.dll".
2020-Jul-14 09:47:44 . nRF52_logger_open
2020-Jul-14 09:47:44 . nRF52_logger_open: nRFJProg logger opened to callback at address 0X7FFF1059E520
2020-Jul-14 09:47:44 . nRF52_open
2020-Jul-14 09:47:44 . . Segger_logger_open
2020-Jul-14 09:47:44 . . Segger_logger_open: nRFJProg logger opened to callback at address 0X7FFEF22D8F00
2020-Jul-14 09:47:44 . . Segger_open_dll
2020-Jul-14 09:47:44 . . Segger_open_dll: No J-Link DLL path was provided. Attempting to auto detect.
2020-Jul-14 09:47:44 . . Segger_open_dll: Load library at "C:\\Program Files (x86)\\SEGGER\\JLink\\JLink_x64.dll".
2020-Jul-14 09:47:44 . . . Segger_dll_version
2020-Jul-14 09:47:44 nRF_enum_emu_snr
2020-Jul-14 09:47:44 . nRF52_enum_emu_snr
2020-Jul-14 09:47:44 . . Segger_is_connected_to_emu
2020-Jul-14 09:47:44 . . Segger_enum_emu_snr
2020-Jul-14 09:47:44 . . . Segger_enum_emu_snr
2020-Jul-14 09:47:44 . . . . Segger_get_num_emus
2020-Jul-14 09:47:44 . . Segger_is_connected_to_emu
2020-Jul-14 09:47:44 nRF_connect_to_emu_with_snr
2020-Jul-14 09:47:44 . nRF52_connect_to_emu_with_snr
2020-Jul-14 09:47:44 . . Segger_is_connected_to_emu
2020-Jul-14 09:47:44 . . Segger_connect_to_emu_with_snr
2020-Jul-14 09:47:44 . . . Segger_is_connected_to_emu
2020-Jul-14 09:47:44 . . . Segger_enum_emu_snr
2020-Jul-14 09:47:44 . . . . Segger_get_num_emus
2020-Jul-14 09:47:44 . . . Segger_connect_to_emu_with_snr
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: Segger logging enabled with callback at 0x140732961630544.
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:042.625
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:048.581
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO Hardware: V7.00
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:053.116
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO S/N: 20090928
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:057.437
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO OEM: SEGGER
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:061.155
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO Feature(s): RDI,FlashDL,FlashBP,JFlash,GDB
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:066.684
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO TELNET listener socket opened on port 19021
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:071.803
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Starting webserver
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:075.535
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Webserver running on local port 19080
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:078.887
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 40.881ms returns O.K.
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:082.282
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_Lock()
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:085.846
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_GetHWStatus(...)
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:089.967
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.848ms returns 0x00
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:093.463
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("SetRestartOnClose = 0", ...).
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:096.938
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.693ms returns 0x01
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:101.062
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("DisableFlashDL", ...).
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:104.849
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.763ms returns 0x00
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:108.410
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:111.817
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.763ms returns 0x00
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:115.428
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetHookUnsecureDialog(...)
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:118.996
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.276ms returns 0
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:122.447
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_TIF_Select(JLINKARM_TIF_SWD)
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:126.429
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.748ms returns 0x00
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:130.071
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetSpeed(2000)
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO T35A4 000:133.892
2020-Jul-14 09:47:44 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.586ms
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO T35A4 000:139.242
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("CORESIGHT_SetIndexAHBAPToUse = 0", ...).
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO T35A4 000:142.643
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO - 1.679ms returns 0x00
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO T35A4 000:146.014
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("device = nRF52", ...).
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO T35A4 000:158.853
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO T35A4 000:164.160
2020-Jul-14 09:47:44 . . . . . Segger_load_core_data: JLink INFO C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully.
2020-Jul-14 09:47:45 . . . . . Segger_load_core_data: JLink INFO T35A4 000:230.682
2020-Jul-14 09:47:45 . . . . . Segger_load_core_data: JLink INFO Device "NRF52" selected.
2020-Jul-14 09:47:45 . . . . . Segger_load_core_data: JLink INFO T35A4 000:238.740
2020-Jul-14 09:47:45 . . . . . Segger_load_core_data: JLink INFO - 90.955ms returns 0x00
2020-Jul-14 09:47:45 . . Segger_read_debug_port_idr
2020-Jul-14 09:47:45 . . . Segger_read_debug_port_register
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register
2020-Jul-14 09:47:45 . . . . . Segger_coresight_configure
2020-Jul-14 09:47:45 . . . . . Segger_coresight_configure: JLink INFO T35A4 000:250.902
2020-Jul-14 09:47:45 . . . . . Segger_coresight_configure: JLink INFO JLINK_CORESIGHT_Configure()
2020-Jul-14 09:47:45 . . . . . Segger_coresight_configure: JLink INFO T35A4 000:256.411
2020-Jul-14 09:47:45 . . . . . Segger_coresight_configure: JLink INFO - 7.199ms returns 0
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO T35A4 000:259.864
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x00)
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO T35A4 000:263.509
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO failed
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO T35A4 000:266.811
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLink INFO - 8.645ms returns -1
2020-Jul-14 09:47:45 . . . . Segger_read_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: JLink INFO T35A4 000:275.181
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: JLink INFO T35A4 000:278.732
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: JLink INFO - 5.224ms returns -1
2020-Jul-14 09:47:45 . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:47:45 . . : JLink INFO T35A4 000:283.692
2020-Jul-14 09:47:45 . . : JLink INFO JLINK_Unlock()
2020-Jul-14 09:47:45 nRF_close_dll
2020-Jul-14 09:47:45 . nRF52_close
2020-Jul-14 09:47:45 . . Segger_is_connected_to_emu
2020-Jul-14 09:47:45 . . Segger_is_connected_to_emu: JLink INFO T35A4 000:292.276
2020-Jul-14 09:47:45 . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Jul-14 09:47:45 . . Segger_is_connected_to_emu: JLink INFO T35A4 000:295.494
2020-Jul-14 09:47:45 . . Segger_is_connected_to_emu: JLink INFO - 4.833ms returns 0x01
2020-Jul-14 09:47:45 . . : JLink INFO T35A4 000:298.732
2020-Jul-14 09:47:45 . . : JLink INFO JLINK_Lock()
2020-Jul-14 09:47:45 . . Segger_close
2020-Jul-14 09:47:45 . . . Segger_disconnect_from_emu
2020-Jul-14 09:47:45 . . . . Segger_disconnect_from_emu
2020-Jul-14 09:47:45 . . . . . Segger_is_connected_to_device
2020-Jul-14 09:47:45 . . . . . Segger_is_connected_to_device: JLink INFO T35A4 000:308.559
2020-Jul-14 09:47:45 . . . . . Segger_is_connected_to_device: JLink INFO JLINK_IsConnected()
2020-Jul-14 09:47:45 . . . . . Segger_is_connected_to_device: JLink INFO T35A4 000:311.768
2020-Jul-14 09:47:45 . . . . . Segger_is_connected_to_device: JLink INFO - 5.051ms returns FALSE
2020-Jul-14 09:47:45 . . . . . Segger_is_debug_region_powered
2020-Jul-14 09:47:45 . . . . . . Segger_read_debug_port_register
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register: JLink INFO T35A4 000:320.238
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register: JLink INFO T35A4 000:323.663
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register: JLink INFO - 5.074ms returns -1
2020-Jul-14 09:47:45 . . . . . . . Segger_write_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: JLink INFO T35A4 000:331.713
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: JLink INFO T35A4 000:335.835
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: JLink INFO - 5.836ms returns -1
2020-Jul-14 09:47:45 . . . . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 09:47:45 . . . . Segger_disconnect_from_emu: JLink INFO T35A4 000:340.840
2020-Jul-14 09:47:45 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Unlock()
2020-Jul-14 09:47:45 . . . . Segger_disconnect_from_emu: JLink INFO T35A4 000:365.969
2020-Jul-14 09:47:45 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Close()
2020-Jul-14 09:47:45 . . Segger_close: Freeing Library.
2020-Jul-14 09:47:45 nRF_close_dll: Freeing Library.
2020-Jul-14 16:48:05 --------------------------------------------------------------------------------
2020-Jul-14 16:48:05 nrfjprog -f nrf52 --recover --log
2020-Jul-14 16:48:05 nrfjprog version 10.9.0
2020-Jul-14 16:48:05 --------------------------------------------------------------------------------
2020-Jul-14 16:48:05 nRF_logger_open
2020-Jul-14 16:48:05 nRF_logger_open: nRFJProg logger opened to callback at address 0X7FF68AC733C0
2020-Jul-14 16:48:05 nRF_open_dll
2020-Jul-14 16:48:05 nRF_open_dll: Load library at "C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\JLINKARM_NRF52_NRFJPROG.dll".
2020-Jul-14 16:48:05 . nRF52_logger_open
2020-Jul-14 16:48:05 . nRF52_logger_open: nRFJProg logger opened to callback at address 0X7FFF0FA0E520
2020-Jul-14 16:48:05 . nRF52_open
2020-Jul-14 16:48:05 . . Segger_logger_open
2020-Jul-14 16:48:05 . . Segger_logger_open: nRFJProg logger opened to callback at address 0X7FFE984F8F00
2020-Jul-14 16:48:05 . . Segger_open_dll
2020-Jul-14 16:48:05 . . Segger_open_dll: No J-Link DLL path was provided. Attempting to auto detect.
2020-Jul-14 16:48:05 . . Segger_open_dll: Load library at "C:\\Program Files (x86)\\SEGGER\\JLink\\JLink_x64.dll".
2020-Jul-14 16:48:05 . . . Segger_dll_version
2020-Jul-14 16:48:05 nRF_enum_emu_snr
2020-Jul-14 16:48:05 . nRF52_enum_emu_snr
2020-Jul-14 16:48:05 . . Segger_is_connected_to_emu
2020-Jul-14 16:48:05 . . Segger_enum_emu_snr
2020-Jul-14 16:48:05 . . . Segger_enum_emu_snr
2020-Jul-14 16:48:05 . . . . Segger_get_num_emus
2020-Jul-14 16:48:05 . . Segger_is_connected_to_emu
2020-Jul-14 16:48:05 nRF_connect_to_emu_with_snr
2020-Jul-14 16:48:05 . nRF52_connect_to_emu_with_snr
2020-Jul-14 16:48:05 . . Segger_is_connected_to_emu
2020-Jul-14 16:48:05 . . Segger_connect_to_emu_with_snr
2020-Jul-14 16:48:05 . . . Segger_is_connected_to_emu
2020-Jul-14 16:48:05 . . . Segger_enum_emu_snr
2020-Jul-14 16:48:05 . . . . Segger_get_num_emus
2020-Jul-14 16:48:05 . . . Segger_connect_to_emu_with_snr
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: Segger logging enabled with callback at 0x140731453909328.
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:042.723
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO Firmware: J-Link ARM-OB STM32 compiled Aug 22 2012 19:52:04
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:048.744
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO Hardware: V7.00
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:053.952
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO S/N: 20090928
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:058.503
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO OEM: SEGGER
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:063.096
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO Feature(s): RDI,FlashDL,FlashBP,JFlash,GDB
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:068.314
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO TELNET listener socket opened on port 19021
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:072.369
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Starting webserver
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:076.228
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO WEBSRV Webserver running on local port 19080
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:079.643
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 42.005ms returns O.K.
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:083.145
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_Lock()
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:086.540
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_GetHWStatus(...)
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:090.052
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.703ms returns 0x00
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:094.307
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("SetRestartOnClose = 0", ...).
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:097.877
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 2.042ms returns 0x01
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:101.839
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("DisableFlashDL", ...).
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:105.473
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.780ms returns 0x00
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:109.218
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:112.825
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 1.738ms returns 0x00
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:117.072
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetHookUnsecureDialog(...)
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:120.805
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.462ms returns 0
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:124.380
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_TIF_Select(JLINKARM_TIF_SWD)
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:128.679
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 6.114ms returns 0x00
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:132.295
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO JLINK_SetSpeed(2000)
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO T47D8 000:136.010
2020-Jul-14 16:48:05 . . . . Segger_connect_to_emu_without_snr: JLink INFO - 5.571ms
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:141.530
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("CORESIGHT_SetIndexAHBAPToUse = 0", ...).
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:145.141
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO - 1.854ms returns 0x00
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:148.794
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO JLINK_ExecCommand("device = nRF52", ...).
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:160.186
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:165.233
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully.
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:212.794
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO Device "NRF52" selected.
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO T47D8 000:219.545
2020-Jul-14 16:48:05 . . . . . Segger_load_core_data: JLink INFO - 68.684ms returns 0x00
2020-Jul-14 16:48:05 . . Segger_read_debug_port_idr
2020-Jul-14 16:48:05 . . . Segger_read_debug_port_register
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register
2020-Jul-14 16:48:05 . . . . . Segger_coresight_configure
2020-Jul-14 16:48:05 . . . . . Segger_coresight_configure: JLink INFO T47D8 000:233.012
2020-Jul-14 16:48:05 . . . . . Segger_coresight_configure: JLink INFO JLINK_CORESIGHT_Configure()
2020-Jul-14 16:48:05 . . . . . Segger_coresight_configure: JLink INFO T47D8 000:238.669
2020-Jul-14 16:48:05 . . . . . Segger_coresight_configure: JLink INFO - 7.811ms returns 0
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO T47D8 000:243.178
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x00)
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO T47D8 000:247.001
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO failed
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO T47D8 000:250.882
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLink INFO - 9.432ms returns -1
2020-Jul-14 16:48:05 . . . . Segger_read_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: JLink INFO T47D8 000:260.745
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: JLink INFO T47D8 000:264.970
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: JLink INFO - 6.227ms returns -1
2020-Jul-14 16:48:05 . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 16:48:05 . . : JLink INFO T47D8 000:271.475
2020-Jul-14 16:48:05 . . : JLink INFO JLINK_Unlock()
2020-Jul-14 16:48:05 nRF_close_dll
2020-Jul-14 16:48:05 . nRF52_close
2020-Jul-14 16:48:06 . . Segger_is_connected_to_emu
2020-Jul-14 16:48:06 . . Segger_is_connected_to_emu: JLink INFO T47D8 000:281.021
2020-Jul-14 16:48:06 . . Segger_is_connected_to_emu: JLink INFO JLINK_IsOpen()
2020-Jul-14 16:48:06 . . Segger_is_connected_to_emu: JLink INFO T47D8 000:284.683
2020-Jul-14 16:48:06 . . Segger_is_connected_to_emu: JLink INFO - 5.790ms returns 0x01
2020-Jul-14 16:48:06 . . : JLink INFO T47D8 000:288.608
2020-Jul-14 16:48:06 . . : JLink INFO JLINK_Lock()
2020-Jul-14 16:48:06 . . Segger_close
2020-Jul-14 16:48:06 . . . Segger_disconnect_from_emu
2020-Jul-14 16:48:06 . . . . Segger_disconnect_from_emu
2020-Jul-14 16:48:06 . . . . . Segger_is_connected_to_device
2020-Jul-14 16:48:06 . . . . . Segger_is_connected_to_device: JLink INFO T47D8 000:300.686
2020-Jul-14 16:48:06 . . . . . Segger_is_connected_to_device: JLink INFO JLINK_IsConnected()
2020-Jul-14 16:48:06 . . . . . Segger_is_connected_to_device: JLink INFO T47D8 000:304.600
2020-Jul-14 16:48:06 . . . . . Segger_is_connected_to_device: JLink INFO - 5.694ms returns FALSE
2020-Jul-14 16:48:06 . . . . . Segger_is_debug_region_powered
2020-Jul-14 16:48:06 . . . . . . Segger_read_debug_port_register
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register: JLink INFO T47D8 000:313.808
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register: JLink INFO T47D8 000:317.345
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register: JLink INFO - 5.232ms returns -1
2020-Jul-14 16:48:06 . . . . . . . Segger_write_debug_port_register: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: Attempting to clear any configuration errors in debug port before closing connection.
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: JLink INFO T47D8 000:325.812
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: JLink INFO JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: JLink INFO T47D8 000:329.962
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: JLink INFO - 5.829ms returns -1
2020-Jul-14 16:48:06 . . . . . . . . Segger_abort_debug_action: JLinkARM.dll reported "-1", an unknown error.
2020-Jul-14 16:48:06 . . . . Segger_disconnect_from_emu: JLink INFO T47D8 000:334.923
2020-Jul-14 16:48:06 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Unlock()
2020-Jul-14 16:48:06 . . . . Segger_disconnect_from_emu: JLink INFO T47D8 000:355.819
2020-Jul-14 16:48:06 . . . . Segger_disconnect_from_emu: JLink INFO JLINK_Close()
2020-Jul-14 16:48:06 . . Segger_close: Freeing Library.
2020-Jul-14 16:48:06 nRF_close_dll: Freeing Library.
By the way, I checked voltage on all pins, It is a bit strange that P0.21/nRST is Low( while I used pull up resistor on it) and also I've never program it, So this GPIO shouldn't be configured as an active-low Reset!
Is it normal for the P0.21/nRST to be Low in this situation?