STM32

• [ ] Custom bootloader
• [ ] Firmware update via ESP32
• [x] CRC validation
• [ ] Watchdog reset handling

ESP32

• [ ] Bootloader
• [ ] Built-in OTA partition system
• [ ] Downloads update from AWS
• [ ] Sends new STM32 firmware over UART

1. Brownout detection both on STM32 and ESP32
2. Low power mode when idle
3. Persistent storage of last known state
4. Bootloader based OTA
5. Hardware watchdog reset logging