Blow Strength Beacon

/*********************************************************************
 This is an example for our nRF52 based Bluefruit LE modules

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#include <bluefruit.h>

// Beacon uses the Manufacturer Specific Data field in the advertising
// packet, which means you must provide a valid Manufacturer ID. Update
// the field below to an appropriate value. For a list of valid IDs see:
// https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers
// 0x004C is Apple (for example)
#define MANUFACTURER_ID   0x004C 

// AirLocate UUID: E2C56DB5-DFFB-48D2-B060-D0F5A71096E0
uint8_t beaconUuid[16] = 
{ 
  0xE2, 0xC5, 0x6D, 0xB5, 0xDF, 0xFB, 0x48, 0xD2, 
  0xB0, 0x60, 0xD0, 0xF5, 0xA7, 0x10, 0x96, 0xE0, 
};

// A valid Beacon packet consists of the following information:
// UUID, Major, Minor, RSSI @ 1M
BLEBeacon beacon(beaconUuid, 0x0000, 0x0000, -80);

int adcin    = A5;
int adcvalue = 0;
//float mv_per_lsb = 3600.0F/1024.0F; // 10-bit ADC with 3.6V input range
uint16_t ADsum,ADavg;
int ADread,read_cnt;
int Blow_Flag;
uint16_t Major, Minor;
void setup() 
{
  Serial.begin(115200);
  while ( !Serial ) delay(10);   // for nrf52840 with native usb

  Serial.println("Blow strength recorder");
  Serial.println("--------------------------\n");

  Bluefruit.begin();

  // off Blue LED for lowest power consumption
  Bluefruit.autoConnLed(false);
  Bluefruit.setTxPower(0);    // Check bluefruit.h for supported values
  Bluefruit.setName("Blow");

  // Manufacturer ID is required for Manufacturer Specific Data
  beacon.setManufacturer(MANUFACTURER_ID);

  // Setup the advertising packet


  Serial.println("Broadcasting beacon, open your beacon app to test");

}

void startAdv(void)
{  
  // Advertising packet
  // Set the beacon payload using the BLEBeacon class populated
  // earlier in this example
  Bluefruit.Advertising.setBeacon(beacon);

  // Secondary Scan Response packet (optional)
  // Since there is no room for 'Name' in Advertising packet
  Bluefruit.ScanResponse.addName();
  
  /* Start Advertising
   * - Enable auto advertising if disconnected
   * - Timeout for fast mode is 30 seconds
   * - Start(timeout) with timeout = 0 will advertise forever (until connected)
   * 
   * Apple Beacon specs
   * - Type: Non connectable, undirected
   * - Fixed interval: 100 ms -> fast = slow = 100 ms
   */
  //Bluefruit.Advertising.setType(BLE_GAP_ADV_TYPE_ADV_NONCONN_IND);
  Bluefruit.Advertising.restartOnDisconnect(true);
  Bluefruit.Advertising.setInterval(160, 160);    // in unit of 0.625 ms
  Bluefruit.Advertising.setFastTimeout(30);      // number of seconds in fast mode
  Bluefruit.Advertising.start(30);                // 0 = Don't stop advertising after n seconds  
}



void loop() {
  delay(50);
  ADread = analogRead(adcin);

  if(ADread>=5)
  {
    Blow_Flag = 1;
    ADsum += ADread;
    read_cnt++;
    Serial.print(ADread);
    Serial.print(",");
    Serial.print(ADsum);
    Serial.print(",");
    Serial.print(ADavg);
    Serial.print(",");
    Serial.println(read_cnt);
  }
  else if( ADread <= 5 && Blow_Flag == 1 && read_cnt>10)
  {
    ADavg = ADsum / read_cnt;
    Major=ADsum/256+(ADsum%256)*256;
    Minor=ADavg/256+(ADavg%256)*256;
    beacon.setMajorMinor(Major, Minor); //Big Endian
    startAdv();
    
    Blow_Flag = 0;
    read_cnt = 0;
    ADsum = 0;
  }
  else if( ADread < 5 )
  {
    Blow_Flag = 0;
    read_cnt = 0;
    ADsum = 0;
  }
}