Add TSL2561 sensor

[davide125]

Add support for the TSL2561 light sensor. Related protobufs PR: meshtastic/protobufs#756

🤝 Attestations

• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Station G2

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[Copilot]

Pull Request Overview

This PR adds support for the TSL2561 digital light sensor to the Meshtastic telemetry system. The implementation includes sensor detection, initialization, and data collection for lux measurements.

Key changes:

• New TSL2561Sensor class implementation with proper initialization and metric collection
• Updated I2C device detection to differentiate between TSL2561 and TSL2591 sensors sharing the same address
• Integration with the EnvironmentTelemetry module for automatic sensor polling and data reporting

Reviewed Changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/modules/Telemetry/Sensor/TSL2561Sensor.h	Header file defining the TSL2561Sensor class interface
src/modules/Telemetry/Sensor/TSL2561Sensor.cpp	Implementation of TSL2561 sensor functionality including setup and metric collection
src/modules/Telemetry/EnvironmentTelemetry.cpp	Integration of TSL2561 sensor into the telemetry polling and data collection system
src/main.cpp	Registration of TSL2561 device type for I2C scanning
src/detect/ScanI2CTwoWire.cpp	Enhanced I2C detection logic to distinguish TSL2561 from TSL2591 sensors
src/detect/ScanI2C.h	Added TSL2561 device type enumeration
protobufs	Updated protobuf submodule reference
platformio.ini	Added Adafruit TSL2561 library dependency

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[thebentern]

@davide125 can you resolve the conflicts in the protobufs submodule ref? I updated master with the changes

[davide125]

Thanks! I've pushed a commit to update protobufs now, I can also squash everything if that makes for an easier merge, just let me know.

[fifieldt]

Hi @davide125 , we'll squash on merge, so no need to do that :)

Are you familar with the trunk code linter? we use that to keep our formatting consistent. If you use vscode you can just add the plugin and will automatically fix everything up.

[davide125]

Ah, I don't use vscode but I've installed trunk and done a pass with it now, just pushed a fix for the issue it found.