Feature/phase4 dynamic sampling#4
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karangandhi-projects merged 5 commits intomainfrom Dec 2, 2025
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…cs, and task logic
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📌 Phase 4 – Dynamic Sensor Sampling Based on Power Mode
This PR implements dynamic, power-aware sensor sampling across the entire STM32 Smart Sensor Hub system. Sensor sampling intervals now automatically adjust depending on the current PowerMode_t (ACTIVE / IDLE / SLEEP / STOP), significantly reducing energy usage and making the hub behave like a real-world smart IoT node.
✅ Key Features Added
Sensor sampling interval now selected from:
#define SENSOR_PERIOD_ACTIVE_MS (1000U)
#define SENSOR_PERIOD_IDLE_MS (5000U)
#define SENSOR_PERIOD_SLEEP_MS (30000U)
#define SENSOR_PERIOD_STOP_MS (0U) // sampling disabled
STOP mode explicitly disables sampling (0 ms).
Task scheduling updated to compute sampling period dynamically.
CLI status command now reports:
Current power mode
Current sampling interval
CLI pmode <0|1|2|3> updates sampling in real time.
Docs fully updated to reflect Phase 4 behavior.
🧪 Testing Performed
Verified ACTIVE → IDLE → SLEEP → STOP transitions.
Confirmed sampling stops in STOP.
Confirmed sampling resumes when transitioning out of STOP.
Verified CLI overrides and live sampling updates.
Logged timestamps confirm dynamic period changes.
📁 Updated Docs
README.md (root level)
docs/ARCHITECTURE.md
docs/CLI_COMMANDS.md
docs/RELEASE_NOTES.md (v0.4.0 added)
docs/README.md
📦 Version
v0.4.0