I am using seed XIAO for one of my projects having nrf 52840 ic so in order use the nrf chip on my custom pcb i have to bootload the nrf 52840 IC purchased from digikey. I am trying to bootload it but unable to find the serial monitor of nrf 52840.
What can be the reason or how to solve it, i have made a custom pcb like seed xiao and when i am trying to bootload the pcb with nrf 52840 , serial port is not showing up. However when i am bootloading a purchased seed xiao module then the process is correct and i am able to see the port. In case of my custom pcb with nrf 52840 i am able to upload hex file through swdio and swclk but port is not showing up.