# BresserWeatherSensorBasic Example – Session Summary

## Overview
This session documents the creation and adaptation of a proof-of-concept sketch for the SX1276_Radio_Lite library, demonstrating reception and decoding of Bresser weather sensor packets. The sketch is self-contained, does not use RadioLib or the WeatherSensor class, and is intended for Adafruit Feather 32u4 and ESP32 boards.

## Key Steps

1. **Requirements Gathering**
   - User requested a sketch using the receive mechanism from BresserRxExample.ino, integrating decoders from BresserWeatherSensorReceiver, and producing output equivalent to BresserWeatherSensorBasic.ino.
   - Simplification: No slot management, no RadioLib, code duplication allowed for clarity.

2. **Implementation**
   - Created `BresserDecoders.h` and `BresserDecoders.cpp` with all decoder functions as free functions.
   - Created `BresserWeatherSensorBasic.ino` with FSK radio setup, ISR, decoder invocation, and serial output.
   - Output matches the original reference sketch.

3. **Compilation and Upload**
   - Compiled successfully for ESP32 (TTGO LoRa32).
   - Uploaded to hardware and verified live serial output.
   - Refactored for Adafruit Feather 32u4: replaced all `Serial.printf()` with `Serial.print()` chains, used `F()` macro for flash storage, simplified battery string handling.
   - Confirmed no `printf` or ESP32-specific calls remain.

4. **Flash Usage**
   - ATmega32U4: 14,936 bytes used out of 28,672 bytes available (52% used, 48% free).

5. **Documentation**
   - Added a header note: proof-of-concept, created with GitHub Copilot, not production-ready.

## Final Sketch Features
- Interrupt-driven FSK receive loop
- Decoding for all Bresser sensor types (5-in-1, 6-in-1, 7-in-1, Lightning, Leakage, AIR_PM, CO2, HCHO_VOC, Soil)
- Minimal string constants, no alignment formatting
- Compatible with Adafruit Feather 32u4 and ESP32

## Proof of Concept
This sketch demonstrates that SX1276_Radio_Lite can reliably receive and decode Bresser weather sensor packets with minimal dependencies and code complexity.

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## Original User Prompts and Modifications

**Initial prompt:**
> Add an example sketch which uses the same receive mechanism as BresserRxExample.ino and integrate the decoders from BresserWeatherSensorReceiver. The result shall be the same as in BresserWeatherSensorBasic.ino.

**Clarifications and modifications:**
- You can duplicate code to simplify things.
- You can skip the findSlot() and sensor array stuff. You can just patch the stuff so that the basic example works.
- Now let's try this sketch!
- Don't bother with the alignment. Just plain text is o.k.
- You can also reduce the string constants to a minimum or use F-Strings if that helps.
- Refactor this sketch for Adafruit Feather 32u4. We do not have printf. If there is a library for it which is small enough, we can use it. Otherwise we have to change the code to Serial.print().
- Add a note how this sketch has been created and that it serves as proof of concept only.

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*Generated by GitHub Copilot (Claude Sonnet) on 2026-03-13*