/IoT_Edge_Device-ESP32_WiFi

ESP32 WiFi device as a edged IoT device. Accessible via RESTfull WebAPI

Primary LanguageC++

IoT_Edge_Device-ESP32_WiFi

ESP32 WiFi device as a edged IoT device. Accessible via WebAPI

On running, device creates a open WiFi Access Point(AP) named IoT_Wifi_config_AP which can be used to configure WiFi credentials of your network router.Web UI for network configuration is accessible in http://192.168.4.1.

  • Wifi Manager Homepage

    • Go to http://192.168.4.1

      Alt text

    • Go to Configure Wifi

      Alt text

When connecting to network, the ip assisgned to controller should be found in order to call API endpoints

Assuming the device ip was 192.168.a.b - should found on connecting UI

Then:

  • Once the device is connected to your network, the device is accessible by the WebAPI in the device IP.

  • Two controller functions

    • Temperature Sensor
      • The DHT11 Temp & Humidity Sensor Module's out should be connected to GPIO4 pin.
    • LED read & write
      • Build in LED is used (PIN 2)

API

  • Data fetching endpoints

    • POST request to endpoint: http://192.168.a.b/fetch with JSON body

      {
	"parameter": "led"
}

      Here the parameter could be one of:

      • temp
      • led

      based on the data need to be fetched.

    • Response will be: 200

      {
	"parameter": "temp",
	"value": 32.40000153
}

  • Updating endpoints

    • POST request to endpoint: http://192.168.a.b/update with JSON body

      {
	"parameter": "led",
	"value": "on"
}

      Here the parameter could be:

      • led

      and the value could be one of:

      • on
      • off

    • Response will be: 200

    LED turned ON