3.8 KiB
@defgroup boards_nrf52840dk nRF52840 DK @ingroup boards @brief Support for the nRF52840 DK
General information
The nRF52840 DK is a devboard based on the nRF52840 SoC which supports multiple wireless protocols including Bluetooth Low Energy, Thread and Zigbee.
Hardware
| MCU | nRF52840 |
|---|---|
| Family | ARM Cortex-M4 |
| Vendor | Nordic Semiconductor |
| RAM | 256 KiB |
| Flash | 1 MiB |
| Frequency | 64 MHz |
| FPU | yes |
| Timers | 5 (32-bit) |
| RTC | 3 |
| ADCs | 1x 12-bit (8 channels) |
| UARTs | 2 |
| SPIs | 4 masters/3 slaves |
| I2Cs | 2 |
| I2S | 1 |
| PWM | 4*4 Channels |
| Radio | 2.4GHz BLE compatible, -20 dBm to +8 dBm output, -95 dBm RX sensitivity |
| Vcc | 1.7V - 5.5V |
| MCU Manual | Manual |
| Board Documentation | Documentation |
RESET pin configuration
On many (all?) nrf52840dk boards, the reset pin is not configured out-of-the box.
This means, that simply nothing happens if the RESET pin is pressed. To change
this, RIOT provides a little tool in dist/tools/nrf52_resetpin_cfg.
Simply compile, flash, and run that tool on your board, and the reset pin should work for the time being.
Flash the board
See the Flashing section in @ref boards_common_nrf52.
Accessing STDIO via UART
The STDIO is directly accessible via the USB port. On a Linux host, it's
generally mapped to /dev/ttyACM0.
Use the term target to connect to the board serial port
make BOARD=nrf52840dk -C examples/basic/hello-world term