Phytec 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 | YES |
| PWM | YES | YES |
| USBDevice | YES | YES |
| Bluetooth | YES | YES |
Pins
| Pin | Hardware pin | Alternative names |
|---|---|---|
LED_RED |
P0_11 |
LED2 |
LED_GREEN |
P0_12 |
LED3 |
LED_BLUE |
P1_09 |
LED4 |
LED_YELLOW |
P0_13 |
LED1, LED |
EPD_BUSY_PIN |
P0_14 |
|
EPD_RESET_PIN |
P0_15 |
|
EPD_DC_PIN |
P0_16 |
|
EPD_CS_PIN |
P0_17 |
|
EPD_SCK_PIN |
P0_19 |
|
EPD_SDO_PIN |
P0_20 |
|
POWER_SUPPLY_PIN |
P1_00 |
|
BUTTON |
P0_07 |
|
UART_TX_PIN |
P0_06 |
|
UART_RX_PIN |
P0_08 |
|
SDA_PIN |
P0_26 |
|
SCL_PIN |
P0_27 |
|
SPI0_SCK_PIN |
P1_15 |
|
SPI0_SDO_PIN |
P1_13 |
|
SPI0_SDI_PIN |
P1_14 |
Machine Package Docs
Documentation for the machine package for the reel board
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 flashlike 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
Bluetooth support is now available for reelboard. See https://github.com/tinygo-org/bluetooth for more information.