kopanitsa / MobilityHackathon_DVTokyo

Source code in the IoT Charger. For DVHack18

DVTokyo - BASE - IoT Device source

brief description

• This is source for BASE IoT device.
• In BASE system,
  • the device is connected to internet via Wi-Fi and communicate to server
  • the device is requested power supply via MQTT
  • the device controls hardware to enable/disable wireless power supply
  • the device notifies current status to server via MQTT for blockchain-based-payment

hardware

• ESP32 (Espressif, micro computer)
• N-ch FET is connected to PIN14
• LED is connected to PIN15

network

• MQTT based
  • Host: test.mosquitto.org:1883
  • Protocol: mqtt / tcp
  • Publish from Server to Car: /dvhack18/base/requestCarStatus/{carUUID}
  • Publish from Car to Server: /dvhack18/base/notifyCarStatus
• Use cases
  • request to change status from server to device

    {
      "request": "start",
      "usrId": "xxxxxxxxx",
      "expectedConsumption": "100"
    }
    

  • notify current status from device to server

    {
      "status": "inUse",
      "deviceId": "1234",
      "remainingPower": "10000"
    }
    

build

• build: platformio -f -c clion run
• upload to device: platformio -f -c clion run --target upload
• clean: platformio -f -c clion run --target clean

dependency

• platformio
• Espressif ESP32 SDK
• PubSubClient
• ArduinoJSON