This article describes the solution adopted to set up a Bluetooth serial link between a Raspberry Pi and an HC05 module. This allows me to connect the FT857 radio via Bluetooth to the Raspberry Pi.
The different steps:
- Pair the HC05 module,
- Get the module’s MAC address,
- Declare a series link on Bluetooth,
- Create connection/disconnection commands from the module,
- Install those commands in the raspberry Pi’s Main Menu.
1 HC06 module pairing
This step is done from the Raspberry Pi taskbar
Select “Make Discoverable
“Select “Add Device”
Select the HC06 module (here ft857) and then enter the pin code
The module is paired but the serial link interface is not a standard service.
2 Get the module’s MAC address
Open a command window and type
The module address (98:D3:32:11:28:DD) is recovered
The series link service is declared on Channel 1. (I’m not sure it’s necessary)
sdptool add –channel-1 SP
3 Creating login/disconnection commands
Two command files were created in the directory /etc/systemd/user:
sudo rfcomm connect rfcomm0 98:D3:32:11:28:DD 1 > /dev/null 2>&1 &
1 is the channel number.
The device created is /dev/rfcomm0. It will have to be selected in a CAT software like Flrig for example.
sudo rfcomm release 0
For each file we execute the command sudo chmod 777 file_nane
4 Inserting commands into the Raspberry Pi OS menu
Select Main Menu Editor
Commands were placed in the Other item
Click On New Element
Give a name, click Browse to select the command file and Validate
After those actions the orders will appear in the menu
73 by Philippe F6CZV