Seeed_Arduino_Grove_DopplerRadar

This library is for the DopplerRadar Board.

This DopplerRadar Board can get the speed of the target and the state of the target's movement.

Hardware requirements

• e.g. Arduino Zero or other Arduino related board like ESP8266/ESP32
• (optional) Grove Shield and a cable
• Grove DopplerRadar(BGT24LTR11)

Connection of the hardware

Connect the DopplerRadar Board to the serial port of the board. In this example, we use hardware serial as the serial port; If you have other software Serial ports on you board, you can also connect to it. But software serial port may cause data loss.

Usage

• Git clone this resp to your Arduino IDE'S libraries directory.

• Open the demo "BGT24LTR11_DETECTION_TARGET" from examples directory in Arduino IDE.

• Start a project.

• You can choose to use the hardware or software serial port.

      #define COMSerial Serial
      #define ShowSerial SerialUSB
      BGT24LTR11<HardwareSerial> BGT;

• Set the communication baud rate of the DopplerRadar module (115200).

• Then initialize BGT in the setup function.

• Set the working mode.

  void setup()
  {
    // put your setup code here, to run once:
    ShowSerial.begin(9600);
    COMSerial.begin(115200);
    BGT.init(COMSerial);
    while (!ShowSerial)
      ;
    while (!COMSerial)
      ;
    /*
     * MODE 0 -->detection target mode
     * MODE 1 -->I/Q ADC mode
     */
    while (!BGT.setMode(0))
      ;
  }
  

• Gets the speed value and target state.

  void loop()
  {
    // put your main code here, to run repeatedly:
    uint16_t state=0;
    ShowSerial.print("target speed:");
    ShowSerial.println(BGT.getSpeed());
    state = BGT.getTargetState();
    //2 --> target approach
    //1 --> target leave
    //0 --> Not Found target
    if (state == 2)
    {
      ShowSerial.println("target approach");
    }
    else if (state == 1)
    {
      ShowSerial.println("target leave");
    }
    delay(200);
  }
  

Methods

See BGT24LTR11.h for detailed descriptions.

• uint8_t getInfo(uint16_t* target_tate, uint16_t* speed);
• uint16_t getSpeed();
• uint16_t getTargetState();
• uint8_t getIQADC(uint16_t I_d[], uint16_t Q_d[], uint16_t* len);
• uint8_t setSpeedScope(uint16_t maxspeed, uint16_t minspeed);
• uint8_t getSpeedScope(uint16_t* maxspeed, uint16_t* minspeed);
• uint8_t setMode(uint16_t mode);
• uint8_t getMode();
• uint8_t setThreshold(uint16_t threshold);
• uint16_t getThreshold();
• uint16_t calculateChecksum(uint16_t *data, uint16_t data_length);
• uint16_t messageChecksum(uint16_t high_order, uint16_t low_order);

License

See LICENSE.