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Fix paho-mqtt v2.x compatibility

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Handle both paho-mqtt v1.x and v2.x in MQTTPublisher:
- Try v2.x format with callback_api_version first
- Fall back to v1.x format if needed
- Ensures compatibility across different paho-mqtt versions

Fixes: ValueError when using paho-mqtt 2.0+
This commit is contained in:
fredrik
2025-12-27 13:52:13 +01:00
parent f54c0a0f35
commit b2f9bff765
2 changed files with 20 additions and 7 deletions
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16
SETUP_ON_PI.md
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@@ -34,7 +34,7 @@ source .venv/bin/activate
### 4. Install Python Dependencies
```bash
pip install --upgrade pip
pip install bluepy paho-mqtt
pip install pybluez bluepy paho-mqtt
# Or install the package in development mode
pip install -e .
@@ -43,8 +43,12 @@ pip install -e .
### 5. Set Bluetooth Capabilities
This allows Python to access Bluetooth without sudo:
```bash
# Set capabilities on the Python interpreter in the venv
sudo setcap 'cap_net_raw,cap_net_admin+eip' .venv/bin/python3
# Set capabilities on the actual Python binary (not the symlink)
sudo setcap 'cap_net_raw,cap_net_admin+eip' $(readlink -f .venv/bin/python3)
# Verify it was set correctly
getcap $(readlink -f .venv/bin/python3)
# Should show: cap_net_raw,cap_net_admin+eip
```
### 6. Configure the Application
@@ -88,13 +92,13 @@ Press Ctrl+C to stop.
If you get permission errors:
```bash
# Check if capabilities are set
getcap .venv/bin/python3
getcap $(readlink -f .venv/bin/python3)
# If not set, run:
sudo setcap 'cap_net_raw,cap_net_admin+eip' .venv/bin/python3
sudo setcap 'cap_net_raw,cap_net_admin+eip' $(readlink -f .venv/bin/python3)
# Verify Bluetooth device is up
hciconfig hci0 up
sudo hciconfig hci0 up
```
### MQTT Connection Issues