Multi Connectivity: Half-Duplex

This project is part of the proof of concept Multi Connectivity. The purpose of this project is to validate new DAB+ messages. With the contained data an acknowledgement needs to be send back with the use of multiple wireless connections. For more information read the thesis (500770588-Afstudeerrapport-final.docx) on the OneDrive.

Features

Following features are provided

• Read provided devices and settings from devices.csv
• Observe folder for identifying new DAB+ message
• Read content of DAB+ message
• Sending acknowledgement by AIS, LoRaWAN and 4G
• Supported interfaces: UART, I2C, Socket and SPI

Requirements

Libraries

• Watchdog
• aisutils
• argparse
• csv

Hardware

• Raspberry Pi 4B
• True Heading AIS Class A Base Station
• Sodaq One Rev3
• Pycom FiPy

Examples

AIS

Requirements

• Connect The True Heading AIS Base Station to the Raspberry Pi by USB
• Add the configuration to the devices.csv:

name,branch,model,interface_type,address,setting
AIS Base Station, True Heading, Carbon Pro, 0,/dev/ttyusb0,38400

Send acknowledgement by AIS

1. Run main.py with the following command:

python main.py ./devices.csv ./correct

2. Place the DAB+ message in the correct folder.

3. Watchdog observer detects a new DAB+ message and reads the content.

4. The Carbon Pro will be selected to send and acknowledgement.

Sodaq One

Requirements

• Connect the Sodaq One to the Raspberry Pi by I2C
• Add the configuration to the devices.csv:

name,branch,model,interface_type,address,setting
LoRaWAN Transponder1,Sodaq One,LoRaWAN,1,4,

Send acknowledgement by LoRaWAN

1. Run main.py with the following command:

python main.py ./devices.csv ./correct

2. Place the DAB+ message in the correct folder.

3. Watchdog observer detects a new DAB+ message and reads the content.

4. The Sodaq One will be selected to send and acknowledgement.

Pycom FiPy

Requirements

• Connect the FiPy with static IP, and Raspberry Pi to the same wireless network (Wi-Fi)
• Add the configuration to the devices.csv:

name,branch,model,interface_type,address,setting
FiPy, Pycom, FiPy, 2,192.168.178.81,6543

Send acknowledgement by LoRaWAN and 4G (CAT-M1)

1. Run main.py with the following command:

python main.py ./devices.csv ./correct

2. Place the DAB+ message in the correct folder.

3. Watchdog observer detects a new DAB+ message and reads the content.

4. The FiPy will be selected to send and acknowledgement.

To Do

• Better Parent-Child relationship between Interface class and the inferfaces (UART, I2C ect...)