Hi there,
On our test jig, we are using two IO pins of nRF52832 as UART lines that goes to a UART dongle to the PC. When we pull the power plug to the Nordic chip and have the UART dongle still connected to the PC, we can still communicate with the Nordic via the terminal which means the Nordic is still on. We need to be able to reset the Nordic when removing and applying VDD power but it seems like the UART lines are keeping the chip on so Nordic never resets.
Is there a way to reset the Nordic when VDD is removed while having the UART lines still connect to the PC. The reason for this is because we are using this test jig for manufacturing testing and removing the UART dongle to disconnect power each time would really be time consuming.
Any ideas on how to shut off the power to UART lines upon disconnecting the VDD power to the Nordic? I saw the post below but since VDD is pulled unexpected during our testing I am not sure if we can set the UART to an input or to low quick enough or how to know when to set it to input or low since Nordic is always partially on (~2.0V).
https://devzone.nordicsemi.com/f/nordic-q-a/49974/nrf52832-taking-power-on-uart-lines/199323
Any suggestions would be much appreciated. Thank you.
