Both JLinkRTTViewer and JLink command line can not connect to target; JLink output:
----------------------
J-Link>conf
USB-Address: 0
Enum. type: Real-SN is used
Real-SN: 50112953
KS-Power: Off (Default)
J-Link>swospeed
Target connection not established yet but required for command.
Please specify device / core. <Default>: NRF52832_XXAA
Type '?' for selection dialog
Device>exit
Please specify target interface:
J) JTAG (Default)
S) SWD
F) FINE
I) ICSP
C) C2
T) cJTAG
TIF>S
Specify target interface speed [kHz]. <Default>: 4000 kHz
Speed>
Device "NRF52832_XXAA" selected.


Connecting to target via SWD
InitTarget() start
InitTarget() end
InitTarget() start
InitTarget() end
InitTarget() start
InitTarget() end
InitTarget() start
InitTarget() end
Cannot connect to target.
J-Link>Target connection not established yet but required for command.
^C
Fri 01/31/2020 18:01:25 C:\Program Files (x86)\SEGGER\JLink>

JLink version is 6.44a, but I tried a later version 6.62a


Log file of nordic reset command is:

--------------------------
Fri Jan 31 18:17:54$ cat log.log
--------------------------------------------------------------------------------
C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin\nrfjprog.exe -r --log
nrfjprog verion 9.7.2
--------------------------------------------------------------------------------
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: read_connected_emu_snr.
FUNCTION: read_connected_emu_snr.
FUNCTION: read_device_family.
FUNCTION: read_device_family.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.
FUNCTION: close_dll.
FUNCTION: close_dll.