Makerdiary nRF52840-MDK

The nRF52840-MDK (not to be confused with its sibling, the nRF52840-MDK-USB-Dongle) is an open-source, micro development kit for IoT applications based on the Nordic Semiconductor nRF52840 SoC chip.

Interfaces

Interface	Hardware Supported	TinyGo Support
GPIO	YES	YES
UART	YES	YES
SPI	YES	YES
I2C	YES	YES
ADC	YES	YES
PWM	YES	YES
USBDevice	YES	YES
Bluetooth	YES	YES

Pins

Pin	Hardware pin	Alternative names
LED_GREEN	P0_22	LED
LED_RED	P0_23
LED_BLUE	P0_24
UART_TX_PIN	P0_20
UART_RX_PIN	P0_19

Machine Package Docs

Documentation for the machine package for the nRF52840-MDK

Flashing

There are two options to flash the nRF52840-MDK board.

OpenOCD (Recommended)

You must install OpenOCD before you will be able to flash the nRF52840-MDK board with your TinyGo code. You should check OpenOCD Documentation for installation and configuration instructions.

Once you have installed it correctly, you will be able to flash the nRF52840-MDK board with your TinyGo code.

• Plug your nRF52840-MDK into your computer’s USB port.
• Build and flash your TinyGo program using tinygo flash -target=nrf52840-mdk

nrfjprog/J-Link

Programs can be loaded onto the nRF52840-MDK board using the nrfjprog command line utility program.

First install the J-Link Software and Documentation Pack from Segger: https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack

Then install the nRF5x Command-Line Tools: https://docs.zephyrproject.org/latest/guides/tools/nordic_segger.html#nrf5x-command-line-tools-installation

Once you have installed both of these correctly, you will be able to flash the nRF52840-MDK board with your TinyGo code.

• Plug your nRF52840-MDK into your computer’s USB port.
• Build and flash your TinyGo program using tinygo flash -target=nrf52840-mdk -programmer command

Notes

Bluetooth support is now available for nRF52840 boards. See https://github.com/tinygo-org/bluetooth for more information.