[Tuya Smart] Bluetooth Mesh Temperature and Humidity 391940A

This board mainly verifies each sensor, tests module power consumption, and mesh uploads data. Later, it will be made into a single sensor or control unit module, and then the mesh Bluetooth gateway network will upload data to the server component. The sensors all choose low-power chips, lcd12864 In the future, you can consider using an ink screen to achieve low power consumption.

1. Reed switches, Hall switches, vibration switches for detecting doors and windows,
2. sht30 detects temperature and humidity reporting, lcd1286 displays temperature and humidity, SPI Flash stores fonts
3. air quality testing,
4. Infrared remote control function, remote control air conditioning TV, etc.
5. The solar panel boosts the voltage to 5V to charge the lithium battery, and the lithium battery LDO steps down to 3.3V for system use.
6. Huada MCU HC32L110 low power consumption as main control 32Kfalsh 4Kram,
7. Low power consumption BLE Mesh transmits data, multi-point Mesh network transmits data, and has lower power consumption than WIFI

Code address: https://gitee.com/miwang186/tuya_mesh_ble

Update log: Time:20210307

Tuya's current problems with mesh BLE: there is no gateway and data can only be uploaded through the APP. Screen design flaws cannot be driven at the moment.

Update log: Time:20210307

Known bugs schematic errors

1. ME6214C45M5G ldo step-down CE pin should be pulled high to enable. If the model is selected incorrectly, ME6214C33M5G should be selected.
2. TPS61221DCKR For boosting, 6120 should be selected to adjust the voltage output.
3. TPS61220DCKR boost inductor L1 schematic error
4. KEY_ADC voltage division error The front end lacks resistor voltage division, and the ADC cannot distinguish the trigger source

Completed functions:

1. sht30 reads temperature and humidity
2. The mesh BLE module protocol uploads temperature and humidity, and the APP is connected to view the temperature and humidity.
3. Collect battery voltage and power and upload
4. Hall element dry spring door and window detection, status upload
5. The solar panel boost charging can supply power normally.