Approximately as in Hang Starting nRF52840 Feather Express Under Segger Debugger - #3 by chrisgr99
Read 4 bytes @ address 0x0002A04C (Data = 0x3D04F84D)
0x0002a04c in PendSV_Handler () at /Users/chrisgr/.platformio/packages/framework-arduinoadafruitnrf52/cores/nRF5/freertos/portable/GCC/nrf52/port.c:104
104 __asm volatile
Also the
0x00000a64 in ?? ()
line is identically appearing in both topics.
We suspect it has something to do with the USB peripheral re-init or the bootloader. Some workarounds are also displayed in that thread.