🛠 Advanced power management with M5PM1 and Deep Sleep
M5Stack PaperDIY Complete Kit · avance · Minimisation de la consommation statique en exploitant les modes de veille profonde du S3 et le PMIC intégré.
Hardware: PaperDIY Complete Kit, precision multimeter. 2. Analysis: Identify GPIO lines controlling power to non-essential peripherals. The M5PM1 chip manages the 140 mAh battery. 3. Code: Configure GPIOs as low output before sleep to cut power supplies. Use esp_sleep_enable_ext0_wakeup to wake the system via a button or sensor. Disable WiFi and Bluetooth before sleeping. 4. Optimization: Enable Light Sleep with PSRAM retention if you need to keep data in memory. Otherwise, use Deep Sleep for microampere consumption. 5. Verification: Measure sleep current. It must be below 50 µA. Verify that waking works correctly. 6. Deep dive: Implement Dynamic Voltage and Frequency Scaling (DVFS) to reduce consumption during light computational tasks.