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.