Step 3: Set up the hardware

Serial Modem Host Applications
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Serial Modem Host Applications

The host and the modem are on the same DK, so there is no wiring. This guide only flashes the nRF54L15 host. The nRF93M1 must run Serial Modem firmware with PPP and CMUX enabled, and keeps it.

  1. Connect the nRF93M1 DK to your computer over USB and turn it on.
  2. Run nrfutil device list and note the DK's serial number and its VCOM0 port. VCOM0 is the host console (uart20). On macOS the port looks like /dev/cu.usbmodem*, on Linux like /dev/ttyACM*, and on Windows like COM*.

Checkpoint: nrfutil device list shows the nRF93M1 DK.