Differences
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iothings:laboratoare:2022:lab7 [2023/11/20 21:55] dan.tudose [Sparrow BLE Service] |
iothings:laboratoare:2022:lab7 [2023/11/20 22:15] (current) dan.tudose [Web BLE Application] |
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| float t = (float)((int8_t)(temp / 100)); | float t = (float)((int8_t)(temp / 100)); | ||
| - | float h = (float)((int8_t)(humidity / 1000)); | + | t += (float)((uint8_t)(temp % 100))/100.0; |
| - | float p = (float)((int16_t)(pressure / 100)); | + | |
| + | float h = (float)((int8_t)(hum / 1000)); | ||
| + | h += (float)((uint16_t)(hum % 1000)))/1000.0; | ||
| + | |||
| + | float p = (float)((int16_t)(pres / 100)); | ||
| + | p += (float)((uint8_t)(pres % 100))/100.0; | ||
| | | ||
| //Notify temperature reading | //Notify temperature reading | ||
| Line 256: | Line 260: | ||
| </code> | </code> | ||
| + | Upload the code to your board. After uploading, open the Serial Monitor, and restart the Sparrow by pressing the RST/EN button. | ||
| + | |||
| + | You should get a //"Waiting a client connection to notify..."// message in the Serial Monitor. | ||
| + | |||
| + | Then, go to your smartphone, open the nRF Connect app from Nordic, and start scanning for new devices. You should find a device called **Sparrow_BME680**, this is the BLE server name you defined earlier. | ||
| + | |||
| + | Connect to it. You’ll see that it displays the Environmental Sensing service with the temperature, humidity, and pressure characteristics. Click on the down arrows to activate the notifications. | ||
| + | |||
| + | Then, click on the second icon (the one that looks like a " mark) at the left to change the format. You can change to unsigned int for all characteristics. You’ll start seeing the temperature, humidity, and pressure values being reported every 10 seconds. | ||
| + | |||
| + | ===== Web BLE Application ===== | ||
| + | |||
| + | Follow the tutorial [[https://randomnerdtutorials.com/esp32-web-bluetooth/| here]] to learn how to create a Web application that connects directly to your Sparrow ESP32 board. You can use the web app just like a normal phone application to send and receive information over BLE from your device. | ||
| + | |||
| + | <note important>Web BLE is not currently supported by iOS phones </note> | ||
| + | |||
| + | Build the application in the tutorial and deploy the web page in your GitHub account. | ||
| + | |||
| + | === Assignment === | ||
| + | <note> Modify the web page and the BLE app to display the BME680 sensor data (temperature, pressure and humidity). </note> | ||
