matlab入門

#include <Arduino_LPS22HB.h>
#include <ArduinoBLE.h>

// LPS22HB

// BLE Service
#define Nano33BLESense_Service4_UUID   "F000AB00-0451-4000-B000-000000000000"
BLEService Nano33BLESense_Service4(Nano33BLESense_Service4_UUID);

// BLE  Characteristic
#define LPS22HB_Press_Characteristic_UUID       "F000AB01-0451-4000-B000-000000000000"
BLEFloatCharacteristic    LPS22HB_Press(LPS22HB_Press_Characteristic_UUID, BLERead | BLENotify);

// BLE  Descriptor
#define LPS22HB_Press_Descriptor_UUID       "2901"
BLEDescriptor   LPS22HB_Press_Descriptor(LPS22HB_Press_Descriptor_UUID, "Pressure  hPa");

#define localNAME  "LPS22HB"
#define DeviceNAME "LPS22HBBLE"

float previousMillis = 0;  // last time value was checked, in ms

void setup() {
  Serial.begin(9600);
  while (!Serial);
  Serial.println("\n LPS22HB test");

  if (!BARO.begin()) {
    Serial.println("Failed to initialize pressure sensor!");
    while (1);
  }
  if (!BLE.begin()) {
    Serial.println("starting BLE failed!");
    while (1);
  }

  BLE.setLocalName(localNAME);
  BLE.setDeviceName(DeviceNAME);

  //// set the service4
  BLE.setAdvertisedService(Nano33BLESense_Service4);

  // add characteristic
  Nano33BLESense_Service4.addCharacteristic(LPS22HB_Press);

  // add descriptor
  LPS22HB_Press.addDescriptor(LPS22HB_Press_Descriptor);

  // add service
  BLE.addService(Nano33BLESense_Service4);
  
  // start advertising
  BLE.advertise();
  Serial.println("\nBluetooth device active, waiting for connections...");
}

void loop() {
  // wait for a BLE central
  BLEDevice central = BLE.central();

  // if a central is connected to the peripheral:
  if (central) {
    delay(100);
    Serial.print("\n Connected to central: ");
    // print the central's BT address:
    Serial.println(central.address());

    // check data every 200ms
    // while the central is connected:
    while (central.connected()) {
      long currentMillis = millis();
      // if 200ms have passed, check value:
      if (currentMillis - previousMillis >= 200) {
        previousMillis = currentMillis;
        updateValue();
        delay(1000);
      }
    }
    // when the central disconnects
    Serial.print("Disconnected from central: ");
    Serial.println(central.address());
    goto brout;
  }
  brout: ;
}

void updateValue() {
  // read the sensor value
  float pressure = BARO.readPressure() * 10.0;
  // print the sensor value
  Serial.print("Pressure = "); Serial.print(pressure);Serial.println(" hPa");
  // update  characteristic
  LPS22HB_Press.writeValue(pressure);  
}