reel board

The reel board is an evaluation board based on the Nordic Semiconductor nRF52840 SoC.

It is equipped with an Electrophoretic (electronic ink) Display (EPD), along with temperature, humidity, light, and accelerometer sensors, and Bluetooth connectivity.

Interfaces

Interface Hardware Supported TinyGo Support
GPIO YES YES
UART YES YES
SPI YES YES
I2C YES YES
ADC YES Not yet
PWM YES Not yet

Flashing

MSD Flashing

The reel board comes with a bootloader that allows Mass Storage Device (MSD) flashing. This means you can just copy the compiled .hex file generated by TinyGo onto it, no additional flashing software is needed.

  • Plug your reel board into your computer’s USB port.
  • The reel board will appear to your computer like a USB drive.
  • Build and flash your TinyGo program using tinygo flash like this:

    tinygo flash -target=reelboard [PATH TO YOUR PROGRAM]
    
  • The reel board should restart and begin running your program.

OpenOCD

Programs can also be loaded onto the reelboard using the openocd command line utility program. You must install OpenOCD before you will be able to flash the reelboard with your TinyGo code.

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