emulator firmware NRF51-DK

[Martijn]

We have some NRF51-DK devices here. Recently we upgraded our segger software to v5.00. During programming using nrfjprog we got the question to upgrade the emulator firmware. We did this, and it works.

But we have a problem with the serial port. We can not get any inforamtion from the nrf51 uart to the pc and vice versa. when we downgrade the emulator firmware back to the original state it works again. But now we get the question to upgrade every time we program.

Any ideas how to fix this?

[MarkH]

We've encountered issues with the UARTs as well. We use VMs for each development environment and find that we cannot use the uart on both the Dongle and DK from within the VM. But it works perfrectly on the host. In our case upgrading the segger firmware didn't improve things or make it worse. We ended up exporting the Development board UART via pins on on the board and Using an FTDI cable (USB to Serial (TTL level) converter) to then connect the pins to the PC as a com port.

If we need to use the dongle we have to do it on the host pc rather than the VM.