BLE configuration for greenhouse project

blegreenhouse.ino

#include <bluefruit.h>

// BLE
#define TX_POWER (4)                      // Transmission power in dBm (check bluefruit.h)
#define ENVIROMENTAL_SERVICE_UUID (0x181A)
#define HUMIDITY_CHARACTERISTIC_UUID (0x2A6F)

BLEDis  bledis;  // device information
BLEService bleEnvService = BLEService(ENVIROMENTAL_SERVICE_UUID);
BLECharacteristic bleHumidityC = BLECharacteristic(HUMIDITY_CHARACTERISTIC_UUID);

void setup() {
  Bluefruit.autoConnLed(true);
  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
  Bluefruit.begin();
  Bluefruit.setTxPower(TX_POWER);
  Bluefruit.setName("Greenhouse Monitor");
  Bluefruit.Periph.setConnectCallback(deviceConnectedCallback);
  Bluefruit.Periph.setDisconnectCallback(deviceDisconnectedCallback);

  // Configure and Start Device Information Service
  bledis.setManufacturer("Kikermo Industries");
  bledis.setModel("Bluefruit Feather52");
  bledis.begin();

  // Start GreenHouse Service
  bleEnvService.begin();

  // Configure humidity characteristic
  bleHumidityC.setProperties(CHR_PROPS_NOTIFY);
  bleHumidityC.setPermission(SECMODE_OPEN, SECMODE_NO_ACCESS);
  bleHumidityC.setFixedLen(1);
  bleHumidityC.begin();
  bleHumidityC.write(0);

  // Set up and start advertising
  startAdv();
}

void startAdv(void) {
  // Advertising packet
  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
  Bluefruit.Advertising.addTxPower();

  // Include bleuart 128-bit uuid
  Bluefruit.Advertising.addService(bleEnvService);

  // Secondary Scan Response packet (optional)
  // Since there is no room for 'Name' in Advertising packet
  Bluefruit.ScanResponse.addName();

  Bluefruit.Advertising.restartOnDisconnect(true);
  Bluefruit.Advertising.setInterval(32, 244);    // in unit of 0.625 ms
  Bluefruit.Advertising.setFastTimeout(30);      // number of seconds in fast mode
  Bluefruit.Advertising.start(0);                // 0 = Don't stop advertising after n seconds
}

// callback invoked when the connection is established
void deviceConnectedCallback(uint16_t connectionHandle) {
}

/**
   Callback invoked when a connection is dropped
*/
void deviceDisconnectedCallback(uint16_t connectionHandle, uint8_t reason) {
}