IN3 on NRF52840 Template

Boiler Plate for IN3 projects on the Nordic nRF52840 using Nordic SDK and Softdevice.

Usage

1. Be sure to have all dependencies installed
2. Delete old builds with make clean
3. Compile sources with make ./Makefile or just make
4. Connect the device
5. Erase device memory to be sure only the desired firmware is in the device make erase
6. Write Nordic Softdevice with make flash_softdevice
7. Write in3 firmware with make flash
8. Connect the device to other capable device with internet connection accordingly to the loaded transport module

Compilation and Flashing

make clean
make
make erase
make flash_softdevice
make flash

All Make commands

• make flash: Runs nrfjprog to program the device with latest firmware
• make erase: Runs nrfjprog to erase the device
• make flash_softdevice: Runs nrfjprog to program the device with latest softdevice hex
• make debug-server: Runs Segger J-Link Debugger Server
• make debug: Uses gcc to compile the program and execute debugging commands
• make sdk_config: Uses java and CMSIS Configuration Wizard to allows users to easily configure ARM source files without using the Keil uVision IDE. Loads config/sdk_config.h from sources.
• make check_env: Check for NRF5 SDK folder
• make update_in3: Updates the version of in3 being used.

Supported transport modules

Change main.cto activate he desired transport module, UART is de the default. Only ONE transport module can be activated on the current firmware version.

• UART - default - Universal Asynchronous Receiver/Transmitter
• BLE - Bluetooth Low-Energy
• USB - Universal Serial Bus

UART - Universal Asynchronous Receiver/Transmitter

Developer need an UART to USB adapter to be able to access this interface. We used FTDI232for testing.

• Mouser.de FTDI 232
• Bus Pirate

Usage

1. Connect the UART to USB adapter to the nRF accordingly to the pinout
2. Create a python virtual environment virtualenv -p python3 venv
3. Activate it source venv/bin/activate
4. Install the dependencies pip install -r scripts/requirements.txt
5. Run the script python scripts/in3_uart_adapter.py
6. Turn on the dev board or press the reset button
7. Script must show the incubed payload and request the data from the in3 server

UART pinout on nRF5840:

PIN NUMBER	PIN NAME	FTDI232
P0.29	TXD	RXD
P0.31	RXD	TXD
P1.13	RTS	CTS
P1.15	CTS	DTR

BLE - Bluetooth Low-Energy

Missing pairing. Working with hardcoded parameters.

USB - Universal Serial Bus

Future feature

Dependencies

• Nordic nRF52 SDK
• Nordic Command Line Tools
• Micro-ecc library
  • Installation steps

Tested on

• Nordic nRF52840 PCA10056
• Nordic nRF52840 Dongle