Successfully Configuring Sensor Data Synchronization in BLE Mesh

General
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I recently faced a challenge with my BLE mesh setup using nRF52840, where I was struggling to synchronize temperature and humidity sensor data simultaneously. After some research and experimentation, I found a solution that not only resolved the issue but also improved the system’s reliability in noisy environments. Here’s how I tackled it:

The Problem

Initially, I was sending temperature and humidity data separately, which led to data loss, especially in environments with high interference. This was problematic because losing either data point meant incomplete information, which was critical for my application.

The Solution

I decided to modify the sensor server and client samples to send both temperature and humidity readings at the same time. Here’s what I did:

  1. Scheduling Data Collection: I adjusted the get_data function to collect both sensor readings in a single cycle. This involved modifying the switch-case structure to handle both data points sequentially within the same interval.

  2. Reducing Latency: By decreasing the interval between data collections, I ensured that both readings were captured and transmitted together, minimizing the chance of data loss.

  3. Handling Errors Gracefully: I implemented error handling to ensure that if one sensor fails, the system logs the error without crashing. This made the system more robust and user-friendly.

The Outcome

The changes worked beautifully! Now, both temperature and humidity data are synchronized and transmitted reliably. This has significantly improved the accuracy of my system and reduced the need for manual data reconciliation.

Tips for Others

  • Test in Real Conditions: Always test your setup in the environment it’s meant to operate in. This helps identify issues early.
  • Log Everything: Detailed logging was crucial in diagnosing and fixing issues. It allowed me to pinpoint where data was being lost and why.
  • Iterate Gradually: Make small, incremental changes and test each one before moving on. This approach helps isolate problems and ensures stability.

I’m thrilled with the results and appreciate the community’s support in helping me find this solution. If anyone has further questions or needs assistance, feel free to reach out!

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