🛠 Advanced Power Management with Deep Sleep and RTC
PaperDIY Assembly Kit (M5Stack) · avance · Maximisez l'autonomie des 140mAh en configurant les wake-up sources sur l'ESP32-S3.
Hardware: PaperDIY, multimeter for µA current measurement. 2. Context: E-paper holds image without power, but M5PM1 must cut unused rails. 3. Setup: Disable WiFi/BT via esp_wifi_stop(). Configure button/sensor GPIO as wake-up source. Use rtc_gpio_hold() for critical pins. 4. Commands: Call esp_sleep_enable_ext0_wakeup() or gpio_wakeup_enable(). Enter deep sleep via esp_deep_sleep_start(). LX7 SoC stops, only RTC logic active. 5. Verification: Current must drop below 10µA. On wake, verify stack pointer restoration. 6. Deep Dive: Implement a watchdog for periodic wake-ups (e.g., every 5 min) to poll sensors, adjusting work/sleep ratio for multi-week battery life.