Prototype a Temperature and Humidity Sensor with Bluetooth Module SDK

1. Log in to the Tuya IoT Platform.

2. Create a product that adopts the custom solution. For more information, see Create Products.

   

3. Select functions for the temperature and humidity sensor. The following figure shows the functions that are selected in this demo.

   

4. On the Device Panel tab, select an app panel that suites the product. For more information, see Design App UI.

5. In the step of Hardware Development, select the Self-developed Module SDK, and set the required fields. In this example, Chipset Platform is set to General CPU.

6. In the Download Documents section, you can download the SDK.

   

After the downloaded SDK is decompressed, you can open the tuya_ble_app folder and check the application demo and documentation. You can follow the sht3x demo in the SHT3x directory and modify the code to implement sensing functionality.

1. Modify device information in the tuya_ble_app_demo.h file, including APP_PRODUCT_ID, APP_BUILD_FIRMNAME, and TY_APP_VER_STR. The following list describes the information:

   • APP_PRODUCT_ID is generated when you create a product in Step 1.

   • APP_BUILD_FIRMNAME is the firmware identifier. This is the unique identification of the firmware. This information is verified during flashing authorization and cannot be modified.

   • TY_APP_VER_STR is the firmware version that is used to mark the version of the updated firmware during OTA updates.

2. Modify the IIC configuration in shx.h based on the hardware circuit of the development board. This allows you to define I/O pins that are used by the sensor. When you use the sensor, keep the default I/O pin settings.

3. After you modify the shx.h file, compile the Telink project. Then, the system automatically applies the modified values to the application code and generates the firmware for production and updates in the ble_sdk_multimode\8258_module folder.
   

• Test stage

  You can use the Telink Burning and Debugging Tool (BDT) to flash the production firmware that is generated in Step 2 to the development board for testing. However, in this case, the module cannot connect to the app, including Tuya Smart, Smart Life, and OEM app. To test the device by using the app, you must get the authorization code and enable permanent authorization of the module on the Cloud Module Burning Authorization Platform. For more information, see the next section “Production stage”.

  

• Production stage

  Log in to the Tuya IoT Platform and go to Tuya Service & Support to submit a ticket and request technical support from Tuya Smart. Technical support engineers can help you upload the firmware and apply for an authorization code for flashing and authorization.

  

After you get the authorization code, you can proceed with flashing and authorization. For more information, see Authorization and programming in Firmware Programming and Authorization. An authorized module can be connected to the Tuya IoT Platform.

The device is connected to the network over the BLE protocol. Perform the following steps:

1. Download the Tuya Smart app, tap the plus sign + in the top right corner of the homepage, and then add a Bluetooth temperature and humidity sensor.
   

2. Enable the Bluetooth function of the mobile phone and start to discover the device.
   

3. Tap the discovered device to pair the device.

For more information, see Third-Party Access.

You can integrate popular voice assistants into your products. Go to Tuya Value Added Service and click Smart Voice to find more.

After your device is certified, you can see the voice assistant logo on the product information page. Follow the Third-Party Tutorial to associate the device with the voice assistant platform and enable device control with voices.

For more information, see Third-Party Access.