M5Stack COCOA Counter & ENV.2 Sensor

[code]

/*
   Based on Neil Kolban example for IDF: https://github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLE%20Tests/SampleScan.cpp
   Ported to Arduino ESP32 by Evandro Copercini
*/
/*
   Thanks to https://gist.github.com/ksasao/0da6437d3eac9b2dbd675b6fee5d1117
   by https://gist.github.com/ksasao
*/
/*
   SD card wrie routine
   https://raspberrypi.mongonta.com/howto-write-csv-to-sdcard-on-m5stack/
*/

//////////////////////////////////////////////////////////////////////////////////
#include <M5Stack.h>

#include <BLEDevice.h>
//#include <BLEUtils.h>
//#include <BLEScan.h>
//#include <BLEAdvertisedDevice.h>

//////////////////////////////////////////////////////////////////////////////////
/*
   note: need add library Adafruit_BMP280 & Adafruit_SHT31 from library manage
*/
#include <Adafruit_SHT31.h>
#include <Wire.h> //The SHT31 uses I2C comunication.
#include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h>

//////////////////////////////////////////////////////////////////////////////////
#include <SPI.h>
#include <SD.h>

//////////////////////////////////////////////////////////////////////////////////
Adafruit_SHT31 sht31 = Adafruit_SHT31();
Adafruit_BMP280 bme;

//time out in seconds
int scanTime = 5;
BLEScan* pBLEScan;

const int chipSelect = 4;

//接触確認アプリのUUID
const char* uuid = "0000fd6f-0000-1000-8000-00805f9b34fb";
int cocoaCnt = 0;

//log file name
const char* logfile = "/datalog.txt";

//文字列
const char* sumdevStr = "Sum";
const char* cocoaStr = " Cocoa";
const char* envStr = "Temp:  %3.1fC\r\nHumid: %3.1f%%\r\nPress: %3.0fhPa\r\n";
//RTC買うまで固定
const char* dateStr = "2020.07.15 10:10:00 ";

//Sensor flag
bool hasSHT31 = false;
bool hasBMP280 = false;
float tmp = 100;
float hum = 0;
float pressure = 0;

//Other flags,Params
bool onBeep = true;
int bright = 20;
int brightPitch = 10;
//////////////////////////////////////////////////////////////////////////////////
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
    void onResult(BLEAdvertisedDevice advertisedDevice) {
      if (advertisedDevice.haveServiceUUID()) {
        if (strncmp(advertisedDevice.getServiceUUID().toString().c_str(), uuid, 36) == 0) {
          cocoaCnt++;
          if (onBeep) {
            M5.Speaker.beep();
            delay(10);
            M5.Speaker.mute();
          }
          M5.Lcd.setCursor(0, 110);
          M5.Lcd.setTextSize(2);
          M5.Lcd.setTextColor(GREEN, BLACK);
          M5.Lcd.printf("%d ", cocoaCnt);
          M5.Lcd.setTextSize(1);
        }
      }
      M5.Lcd.println(advertisedDevice.toString().c_str());
      M5.Lcd.setTextSize(1);
      M5.Lcd.setTextColor(WHITE, BLACK);
    }
};

//////////////////////////////////////////////////////////////////////////////////

void setup() {

  // Initialize the M5Stack
  M5.begin();
  M5.Power.begin();
  M5.Lcd.setBrightness(bright);
  M5.Lcd.setTextSize(1);
  M5.Lcd.println("Hello!, cacoa BLE Scan");

  BLEDevice::init("");
  pBLEScan = BLEDevice::getScan(); //create new scan
  pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
  pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
  pBLEScan->setInterval(100);
  pBLEScan->setWindow(99);  // less or equal setInterval value

  Wire.begin();
  Serial.println(F("ENV2 Unit(SHT31 and BMP280) test..."));

  if (sht31.begin(0x44)) {   // Set to 0x45 for alternate i2c addr
    hasSHT31 = true;
    Serial.println("Found SHT31");

    Serial.print("Heater Enabled State: ");
    if (sht31.isHeaterEnabled())
      Serial.println("ENABLED");
    else
      Serial.println("DISABLED");
  }

  if (bme.begin(0x76)) {
    hasBMP280 = true;
    Serial.println("Found a valid BMP280 sensor");
  }

}

void loop() {
  // print all found BLE devices
  M5.Lcd.setTextSize(1);
  BLEScanResults foundDevices = pBLEScan->start(scanTime, false);

  // clear screen and set cursor to the top
  M5.Lcd.fillScreen(BLACK);
  M5.Lcd.setCursor(0, 0);
  M5.Lcd.setTextSize(2);
  M5.Lcd.setTextColor(WHITE, BLACK);
  M5.Lcd.println(dateStr);

  // print counts of BLE devices
  int sumdev = foundDevices.getCount();

  M5.Lcd.setTextSize(3);
  M5.Lcd.print(sumdevStr);
  M5.Lcd.setTextColor(RED, BLACK);
  M5.Lcd.print(sumdev);

  // print count of cocoa APPs
  M5.Lcd.setTextColor(WHITE, BLACK);
  M5.Lcd.print(cocoaStr);
  M5.Lcd.setTextColor(GREEN, BLACK);
  M5.Lcd.println(cocoaCnt);

  // print env2 data
  if (hasSHT31) {
    tmp = sht31.readTemperature();
    hum = sht31.readHumidity();
  }
  if (hasBMP280) {
    pressure = bme.readPressure() / 100;
    // hPa = Pa / 100;
  }

  M5.Lcd.setTextColor(WHITE, BLACK);
  M5.Lcd.printf(envStr, tmp, hum, pressure);

  // print to the serial port too
  Serial.println(dateStr);
  Serial.print(sumdevStr);
  Serial.println(sumdev);
  Serial.print(cocoaStr);
  Serial.println(cocoaCnt);
  Serial.printf(envStr, tmp, hum, pressure);

  // SDカードへの書き込み処理（ファイル追加モード）
  // SD.beginはM5.begin内で処理されているので不要
  // open the file. note that only one file can be open at a time,
  // so you have to close this one before opening another.
  File dfile = SD.open(logfile, FILE_APPEND);

  // if the file is available, write to it:
  if (dfile) {
    dfile.println(dateStr);
    dfile.print(sumdevStr);
    dfile.print(sumdev);
    dfile.print(cocoaStr);
    dfile.println(cocoaCnt);
    dfile.printf(envStr, tmp, hum, pressure);

    dfile.close();
  }

  //Button controll
  M5.Lcd.setTextSize(3);
  M5.Lcd.println("");
  M5.Lcd.setTextColor(BLUE, WHITE);
  M5.Lcd.println("A: Beep on/off");
  M5.Lcd.println("B: DOWN bright");
  M5.Lcd.println("C: UP   bright");

  int timer = 100;
  while (timer--) {
    if (M5.BtnA.wasReleased()) { //Aボタンでbeepをon/off切り替える
      onBeep = !onBeep;
    } else if (M5.BtnB.wasReleased()) { //Bボタンで輝度を下げる
      bright -= brightPitch;
    } else if (M5.BtnC.wasReleased()) { //Cボタンで輝度を上げる
      bright += brightPitch;
    }
    M5.Lcd.setBrightness(bright);
    delay(70);
    M5.update(); // update button state
  }

  //init for next loop
  M5.Lcd.setTextColor(WHITE, BLACK);
  M5.Lcd.setCursor(0, 110);
  M5.Lcd.setTextSize(1);


  pBLEScan->clearResults();   // delete results fromBLEScan buffer to release memory
  cocoaCnt = 0;

}
// Arranged and written by 柴田(ひ)
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