I am having trouble connecting to an nRF52810 in a uBlox BMD-330 Eval Kit.
It has previously been successfully flashed with custom firmware but, now, when I try to connect with J-Link Commander (V6.88c), using the J-Link integral to the Eval Kit board, I get an error "Could not find core in Coresight setup".
I found a board post suggesting that if the firmware on the device has put it into a sleep mode, then this could be the cause of the failure to connect, and that the solution would be to erase the flash memory on the device.
When I attempt this with "$nrfjprog -f NRF52 --chiperase --log", I get an error: "ERROR: JLinkARM DLL reported an error. ...", and the following log.log is produced:
[2020-Dec-10 15:04:06] [ info] --------------------------------------------------------------------------------
[2020-Dec-10 15:04:06] [ info] nrfjprog -f NRF52 --chiperase --log
[2020-Dec-10 15:04:06] [ info] nrfjprog version 10.12.1
[2020-Dec-10 15:04:06] [ info] --------------------------------------------------------------------------------
[2020-Dec-10 15:04:06] [debug] [ nRF0x0] - open_dll
[2020-Dec-10 15:04:06] [ info] [ nRF0x0] - Load library at C:\Program Files (x86)\Nordic Semiconductor\nrf-command-line-tools\bin\JLINKARM_NRF52_NRFJPROG.dll.
[2020-Dec-10 15:04:06] [ info] [ nRF0x0] - Library loaded, loading member functions.
[2020-Dec-10 15:04:06] [ info] [ nRF0x0] - Member functions succesfully loaded.
[2020-Dec-10 15:04:06] [ info] [Backend] - Logger callback at 0xcf2020 registered in Segger backend logger.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Logger callback at 0xcf2020 registered in JLink logger.
[2020-Dec-10 15:04:06] [debug] [nRF520x0] - open
[2020-Dec-10 15:04:06] [debug] [Backend] - open_dll
[2020-Dec-10 15:04:06] [ info] [Backend] - No J-Link DLL path was provided. Attempting to auto detect.
[2020-Dec-10 15:04:06] [ info] [Backend] - Load library at C:\Program Files (x86)\SEGGER\JLink\JLinkARM.dll.
[2020-Dec-10 15:04:06] [ info] [Backend] - Library loaded, loading member functions.
[2020-Dec-10 15:04:06] [ info] [Backend] - Member functions succesfully loaded.
[2020-Dec-10 15:04:06] [debug] [Backend] - dll_version
[2020-Dec-10 15:04:06] [ info] [Backend] - Segger dll version 6.88.c loaded.
[2020-Dec-10 15:04:06] [debug] [ nRF0x0] - enum_emu_snr
[2020-Dec-10 15:04:06] [debug] [nRF520x0] - enum_emu_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_emu
[2020-Dec-10 15:04:06] [debug] [Backend] - enum_emu_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_enum_emu_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_get_num_emus
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_emu
[2020-Dec-10 15:04:06] [debug] [ nRF0x0] - connect_to_emu_with_snr
[2020-Dec-10 15:04:06] [debug] [nRF520x0] - connect_to_emu_with_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_emu
[2020-Dec-10 15:04:06] [debug] [Backend] - connect_to_emu_with_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_emu
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_enum_emu_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_get_num_emus
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_connect_to_emu_with_snr
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_connect_to_emu_without_snr
[2020-Dec-10 15:04:06] [ info] [Backend] - Segger logging enabled.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Hardware: V1.00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] S/N: 682519921
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] OEM: SEGGER
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] TELNET listener socket opened on port 19021
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] WEBSRV Starting webserver
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] WEBSRV Failed to put socket into listener state (port 19080)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] WEBSRV Webserver running on local port 19081
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 8.012ms returns "O.K."
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_Lock()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_GetHWStatus(...)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.216ms returns 0
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_ExecCommand("SetRestartOnClose = 0", ...).
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.005ms returns 0x01
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_ExecCommand("DisableFlashDL", ...).
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.004ms returns 0x00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.004ms returns 0x00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_SetHookUnsecureDialog
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_SetHookUnsecureDialog(...)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.020ms returns 0
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_TIF_Select(JLINKARM_TIF_SWD)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.727ms returns 0x00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_SetSpeed(2000)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.053ms
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_GetSN()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.013ms returns 682519921
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_load_core_data
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_ExecCommand("CORESIGHT_SetIndexAHBAPToUse = 0", ...).
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.004ms returns 0x00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_ExecCommand("device = nRF52", ...).
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Device "NRF52" selected.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] Device "NRF52" selected.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 29.154ms returns 0x00
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [debug] [Backend] - read_debug_port_idr
[2020-Dec-10 15:04:06] [debug] [Backend] - read_debug_port_register
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_read_debug_port_register
[2020-Dec-10 15:04:06] [debug] [Backend] - coresight_configure
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_CORESIGHT_Configure()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 101.703ms returns 0
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_select_debug_port_register
[2020-Dec-10 15:04:06] [debug] [Backend] - Select AP 255, DP Bank 0, AP Bank 255
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 1.405ms returns -1
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [Backend] - JLinkARM.dll reported "-1", an unknown error.
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_abort_debug_action
[2020-Dec-10 15:04:06] [ info] [Backend] - Attempting to clear any configuration errors in debug port before closing connection.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 1.262ms returns -1
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [Backend] - JLinkARM.dll reported "-1", an unknown error.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.103ms
[2020-Dec-10 15:04:06] [debug] [ nRF0x0] - close_dll
[2020-Dec-10 15:04:06] [debug] [nRF520x0] - close
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_emu
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_IsOpen()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.049ms returns 0x01
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_Lock()
[2020-Dec-10 15:04:06] [debug] [Backend] - close
[2020-Dec-10 15:04:06] [debug] [Backend] - disconnect_from_emu
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_disconnect_from_emu
[2020-Dec-10 15:04:06] [debug] [Backend] - is_connected_to_device
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_IsConnected()
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.039ms returns FALSE
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_is_debug_region_powered
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_read_debug_port_register
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_select_debug_port_register
[2020-Dec-10 15:04:06] [debug] [Backend] - Select AP 255, DP Bank 0, AP Bank 255
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 1.098ms returns -1
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [Backend] - JLinkARM.dll reported "-1", an unknown error.
[2020-Dec-10 15:04:06] [debug] [Backend] - ---just_abort_debug_action
[2020-Dec-10 15:04:06] [ info] [Backend] - Attempting to clear any configuration errors in debug port before closing connection.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 1.207ms returns -1
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_HasError()
[2020-Dec-10 15:04:06] [ info] [Backend] - JLinkARM.dll reported "-1", an unknown error.
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] - 0.102ms
[2020-Dec-10 15:04:06] [ info] [ JLink] - [Info ] [JLink ] JLINK_Close()
[2020-Dec-10 15:04:06] [debug] [Backend] - Segger Backend closed.
[2020-Dec-10 15:04:06] [debug] [nRF520x0] - nRF family DLL closed
The eval board is connected to my Windows PC via USB and appears in Windows Explorer as an external drive.
Any help would be appreciated
