External reset when debugging nRF52

[Remo]

Hi all

I'm using the nRF52832 and I've configured P0.21 as RESET pin.

When I reset the nRF52 via P0.21 while the debugger is running, the nRF52 actually resets but it seems that the debugger didn't recognize the reset (a breakpoint at the beginning of the main function didn't trigger).

How can I achieve that the debugger remains synchronous to the actual code execution when applying an external reset? Is that even possible?

Kind regards

[Remo]

I've tried the nrfjprog with the IAR. When performing the soft reset, the IAR is able to follow it and hits the breakpoint, but when performing the pin reset (which was the one I wanted to test) the IAR can't follow it. So, unfortunately, it seems that there is no solution for this...

[kvicky]

Hi,

I am getting a similar error. I have nRF52832 board connected to raspberry pi for flashing and debugging using openocd. As soon as openocd command is executed I start getting this error:

Info : [nrf52.cpu] external reset detected

Following is the snippet of the output of the openocd command:

pi@vsense:~ $ openocd -c 'bindto 0.0.0.0' -f rpi_as_debugger.cfg -c 'transport s elect swd' -c 'adapter speed 250' -f target/nrf52.cfg
Open On-Chip Debugger 0.11.0+dev-00815-gf77c919cf (2022-08-23-18:35)
Licensed under GNU GPL v2
For bug reports, read
openocd.org/.../bugs.html
srst_only separate srst_gates_jtag srst_push_pull connect_deassert_srst

swd
adapter speed: 250 kHz

Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : BCM2835 GPIO JTAG/SWD bitbang driver
Info : clock speed 1001 kHz
Info : SWD DPIDR 0x2ba01477
Info : [nrf52.cpu] Cortex-M4 r0p1 processor detected
Info : [nrf52.cpu] target has 6 breakpoints, 4 watchpoints
Info : starting gdb server for nrf52.cpu on 3333
Info : Listening on port 3333 for gdb connections
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected
Info : [nrf52.cpu] external reset detected

.....

.....

Does anyone have any idea what could be the root cause of this error propping up even when there is no IDE running, no flashing of program is done, no debugging through IDE is started/ going on.

Thanks in advance...

Regards,

Vicky