nRF52840-dongle
The nRF52840-dongle (PCA10059) is a a small, low-cost USB dongle based on nRF52840 from Nordic.
Serial Console
| Pin | Signal | Notes | 
|---|---|---|
| P0.15 | UART TX | edge soldering points | 
| P0.13 | UART RX | edge soldering points | 
Configurations
Each configuration is maintained in a sub-directory and can be selected as follow:
tools/configure.sh nrf52840-dongle:<subdir>
Where <subdir> is one of the following:
nsh
Basic NuttShell configuration (console enabled in UART0, exposed via soldering points, at 115200 bps).
usbnsh
Basic NuttShell configuration (CDCACM console enabled in USB Port, at 115200 bps).
Flash & Debug
Both flashing and debuing is possible only with an external debug probe.