文件列表:

.travis.yml (2512, 2019-09-24)
LICENSE (1183, 2019-09-24)
app (0, 2019-09-24)
app\app.ino (3387, 2019-09-24)
app\config.h (645, 2019-09-24)
app\credentials.ino (2517, 2019-09-24)
app\iothubClient.ino (4439, 2019-09-24)
app\message.ino (1788, 2019-09-24)
app\serialReader.ino (1726, 2019-09-24)

--- page_type: sample languages: - c products: - azure - azure-iot-hub name: IoT Hub SparkFun ESP8266 Thing-Dev Client application urlFragment: spark-fun-esp8266-client description: "This repo contains an arduino application that runs on board SparkFun ESP8266 Thing-Dev with a DHT22 temperature and humidity sensor." --- # IoT Hub SparkFun ESP8266 Thing-Dev Client application [](https://travis-ci.org/Azure-Samples/iot-hub-SparkFun-ThingDev-client-app) > This repo contains the source code to help you get familiar with Azure IoT using the Azure IoT SparkFun ESP8266 Thing-Dev Starter Kit. You will find the [lesson-based tutorials on Azure.com](https://docs.microsoft.com/azure/iot-hub/iot-hub-sparkfun-esp8266-thing-dev-get-started). This repo contains an arduino application that runs on board SparkFun ESP8266 Thing-Dev with a DHT22 temperature&humidity sensor, and then sends these data to your IoT hub. At the same time, this application receives Cloud-to-Device message from your IoT hub, and takes actions according to the C2D command. ## Prepare your Azure IoT Hub You can follow [this page](https://docs.microsoft.com/azure/iot-hub/iot-hub-sparkfun-esp8266-thing-dev-get-started) to create your Azure IoT hub and register your device. ## Install board with your Arduino IDE 1. Start Arduino and open Preferences window. 2. Enter `http://arduino.esp8266.com/stable/package_esp8266com_index.json` into Additional Board Manager URLs field. You can add multiple URLs, separating them with commas. 3. Open Boards Manager from `Tools > Board` menu and install esp8266 platform 2.2.0 or later. 4. Select your ESP8266 board from `Tools > Board` menu after installation. ## Install libraries Install the following libraries from `Sketch -> Include library -> Manage libraries` * AzureIoTHub * AzureIoTUtility * AzureIoTProtocol_MQTT * ArduinoJson * DHT sensor library * Adafruit Unified Sensor ## Connect your sensor with your board ### Connect with a physical DHT22 sensor You can follow the image to connect your DHT22 with your SparkFun ESP8266 Thing-Dev.  ### DON'T HAVE A PHYSICAL DHT22? You can use the application to simulate temperature&humidity data and send to your IoT hub. 1. Open the `app/config.h` file. 2. Change the `SIMULATED_DATA` value from `false` to `true`. ## Configure and run sample application Upload the `app.ino` to your board. ### Input your credential information After you successfully upload the code to your board. You will see some prompt, input your credential information according to the prompts. ### Send Cloud-to-Device command You can send a C2D message to your device. You can see the device prints out the message and blinks once receiving the message. ### Send Device Method command You can send `start` or `stop` device method command to your Pi to start/stop sending message to your IoT hub.

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