// This example shows how to read temperature/pressure
// This sketch basedon Infeneon example i2ccommand.ino
// https://www.infineon.com/cms/jp/product/sensor/pressure-sensors/pressure-sensors-for-iot/dps310/
// LCD lib from Lang-ship https://lang-ship.com/blog/work/esp32-3248s035/
// use Serial.begin(9600); // instead of 115200, position is at first!
// Y.Okamoto 2021-01-23 Pressure cal. on 04-18
// board writing error 2024-05-03 (Solved the following!)
// 2024-05-04 on writing moment: on board BOOT SW = push!!
// encounter unknown compiling error on 2024-05-05 by ChatGPT suggesstion
// But it solved to use AruinoIDE v2 on 5th May 
// upgrade version name to 1Hz ver3 is trashed 
// update on 11th May 2024
// It is necessary to connect R24 pins for capturing screenshot of LCD
// for more details are shown at http://seagull.stars.ne.jp/Barometer/prototype/Micro-Barometer_ESP32_Recipe.html Thanks to Mr.Masayuki Tanaka 

#include <WiFi.h>
const char* ssid = "Your ID";  //My-Rooter ID "xxxxxxxxxxx";
const char* password = "Your PW";  //My_Rooter PW "xxxxxxxxxxx"; 
WiFiClient client;

// Battery_checker_init from https://programresource.net/2020/02/24/2960.html
// with RGB
#define RGB(r,g,b) (int16_t)(b + (g << 5) + (r << 11)) //色0～31 緑0～63
unsigned long currentMillis;
unsigned long lastupdateMillis = 0;

// for 1Hz sampling by ChatGPT
int lastbattery = -1;

// DPS310 micro-pressure sensor library
#include <Dps310.h>
Dps310 Dps310PressureSensor = Dps310();
float temperature;
float pressure;       // [Pascal]
float pressure_h;     // [hPa]
float meanP;          // previous pressure value 
float height;

float cal_P= -0.700;   // Pressure calibration  from -0.725 on 5th May 2024

uint8_t oversampling = 7;	// over sampling rate
int16_t ret;

// init for dislay ------------------------------------
int t = 0;			// temp t
int l = 1;			// line number
int d = 1; 			// data number
int tm = 0;			// time mark init.
int dmax = 7200;	// 120[min] data at 1Hz
int lmax = 15;      // signal line number 2022-08-15, 20 to 25 on 5th May 2024
int xmax = 480;   	// display xmax pixel
  
// connecting JST server
#define JST (3600L * 9)
#include <time.h>
struct tm timeinfo;
uint8_t minLastReport = 0;
String dateStr;       // date for file name
String timeStr;       // time for file name

// SD card init.
#include <sd_diskio.h>
#include <SD.h>
#include <sd_defines.h>

File myFile;          	// Open filer 
String myFile_BMP;   	// Open filer 
char fn[100];			// file name

// Graphics library 
#include "ESP32-3248S035r.h"  // by Lang-ship https://lang-ship.com/blog/work/esp32-3248s035/
  
static LGFX lcd;                 // LGFXのインスタンスを作成。

#define BitImageSize  (320 * 480 * 3)  //画面キャプチャーイメージサイズ
#define PixelPerMeter (320 / 4 * 100) //画面解像度

// setup--------------------------------------------------------
void setup() {
  
  Serial.begin(9600);   // at first!
  wifi_start();			// wifi

  // Initialize SD card.      forget this! 2023-01-24
    if (!SD.begin()) {  
        lcd.println(
            "Card failed, or not present");  // Print a message if the SD card
        while (1);
    } 
  
  lcd.init();
  // 回転方向を 0～3 の4方向から設定します。(4～7を使用すると上下反転になります。)
  lcd.setRotation(3);

  Serial.begin(115200);

  lcd.setColorDepth(16);
  lcd.startWrite();
  lcd.setAddrWindow(0, 0, lcd.width(), lcd.height());
  
  while (!Serial);      // confirmatiion
  Dps310PressureSensor.begin(Wire);     // connect to DPS310 via i2c
  Serial.println("Init complete!");     // serial port completed
  //WiFi.mode(WIFI_OFF);         // 2022-08-15 https://www.mgo-tec.com/blog-entry-m5stack-yahoo-weather-news-scrolle-watch-message.html  

}

// for 1Hz sampling by ChatGPT
int lastSecond = -1; // Variable to store the last second

void loop() {

   lcd.clear();
  //    lcd.fillScreen(TFT_PINK);
   l = 1;

  lcd.setCursor(0, 0);
  getLocalTime(&timeinfo);      // get local time
  lcd.printf("%02d/%02d/%02d %02d:%02d:%02d",
      timeinfo.tm_year + 1900, timeinfo.tm_mon + 1, timeinfo.tm_mday,
      timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);  
    dateStr = (String)(timeinfo.tm_year + 1900) 
         + "-" + (String)(timeinfo.tm_mon + 1)
         + "-" + (String)timeinfo.tm_mday;
    timeStr = (String)timeinfo.tm_hour
         + "_" + (String)timeinfo.tm_min
         + "_" + (String)timeinfo.tm_sec;     
  // title
    lcd.setCursor(180, 0);
    lcd.printf("DPS310-ESP32_1Hz by Yoshio Okamoto 6th May 2024");
    Serial.println();   
    ret = Dps310PressureSensor.measurePressureOnce(pressure, oversampling);
    meanP = pressure/100.0 + cal_P;    // Pressure calibration; ;
    //  uint16_t c = M5.Lcd.color565(r, g, b);
    lcd.drawLine(5,200, 5,300,0x001F);
    lcd.drawLine(0,200,10,200,0x001F);
    lcd.drawLine(0,300,10,300,0x001F);   
    lcd.drawCentreString("+1.0hPa", 20, 180, 1);  

   // get sensor data -------------------------------
  Serial.println();
  ret = Dps310PressureSensor.measureTempOnce(temperature, oversampling);    // for temperature [Cercius]
  if (ret != 0) {
    Serial.print("FAIL! ret = ");
    Serial.println(ret);
  } else {
    Serial.print("Temperature: ");
    Serial.println(temperature);
//    lcd.drawCentreString(" " + String(temperature) + "'C", 6, 260, 2);
  }
  ret = Dps310PressureSensor.measurePressureOnce(pressure, oversampling);   // for At_pressure [Pa]
  if (ret != 0) {
    Serial.print("FAIL! ret = ");
    Serial.println(ret);
  } else {
   Serial.print("Pressure: ");
   Serial.print(pressure / 100.0, 4);
   Serial.println(" hPa");
   pressure_h = pressure/100.0 + cal_P;    // Pressure calibration;      // pressure for [hPa]
  }
  
  // data file open   
  myFile = SD.open("/"+ dateStr + "-" + timeStr + ".dat", FILE_APPEND);  // "/" is important
  Serial.println("/"+ dateStr + "-" + timeStr + ".dat");
       
  while (l <= lmax){ 
  // graph plot
  int x;            // x
  int y;            // y
  int xp;           // previous x
  int yp;           // previous y
  int x0 = 0;       // first plot offset

  float ls = 16.0;  // line span 15 to 16 on 5th May 2024 
  float pm = 100.0; // magnify Pressure 100 pixel for +1hPa 

  lastSecond = timeinfo.tm_sec; // Update lastSecond
  // for 1Hz sampling

  while (timeinfo.tm_sec == lastSecond) { // Check if the clock second has changed
  delay(1);
  getLocalTime(&timeinfo);
  }

  // display time and increment
  lastSecond = timeinfo.tm_sec; // Update lastSecond
  lcd.setCursor(0, 0);
    lcd.printf("%02d/%02d/%02d %02d:%02d:%02d",
      timeinfo.tm_year + 1900, timeinfo.tm_mon + 1, timeinfo.tm_mday,
      timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec);  
    dateStr = (String)(timeinfo.tm_year + 1900) 
         + "-" + (String)(timeinfo.tm_mon + 1)
         + "-" + (String)timeinfo.tm_mday;
    timeStr = (String)timeinfo.tm_hour
         + "_" + (String)timeinfo.tm_min
         + "_" + (String)timeinfo.tm_sec;          // get local time 

  //  get temperature from DPS310 ----------------------- 
  ret = Dps310PressureSensor.measureTempOnce(temperature, oversampling);
  if (ret != 0)
  {
//    Serial.print("FAIL! ret = ");
//    Serial.println(ret);
  }
  else
  {
//    Serial.print("Temperature: ");
//    Serial.print(temperature);
//    Serial.println(" degrees of Celsius");
  }

  //  get pressure from DPS310 ----------------------- 
  ret = Dps310PressureSensor.measurePressureOnce(pressure, oversampling);
  if (ret != 0)
  {
//    Serial.print("FAIL! ret = ");
//    Serial.println(ret);
  }
  else
  {
//    Serial.print("Pressure: ");
//    Serial.print(pressure);
//    Serial.println(" Pascal");
  }
  pressure_h = pressure/100.0 + cal_P;    // Pressure calibration

  // calc height 	  
  height = (( pow ( (1010.0 / pressure_h), ( 1.0 / 5.257 )) - 1.0 ) * ( temperature + 273.15) ) / 0.0065;

  // display data ----------------------------------- 
  lcd.drawCentreString(String(pressure_h,3) + " hPa", 240, 300, 2);
  lcd.drawCentreString(String(temperature) + " ^C", 340, 300, 2);
  lcd.drawCentreString(String(height) + " m", 430, 300, 2);
    
    getLocalTime(&timeinfo);      // get time for timemark
    if(minLastReport != timeinfo.tm_min) { // if min increment then time mark
    minLastReport = timeinfo.tm_min;
    tm = 6;    // time mark[min]
    }
    else 
    tm = 0;   // no time mark

  // graph plot -------------------------------------
    x = t + x0;
    y = int((meanP - pressure_h) * pm + l * ls -tm + 10.0);    // sign reversed 10.0 need to adjust the line position
    lcd.drawPixel(x, y, TFT_GREEN);      // At_pressure graph plot
    lcd.drawCentreString("d=" + String(d), 20, 310, 1);  // valuse are displayed on LCD    
    lcd.drawCentreString("x=" + String(x), 80, 310, 1);
    lcd.drawCentreString("y=" + String(y),140, 310, 1);

  // write data to SD card --------------------------   
    myFile.printf("%02d/%02d/%02d %02d:%02d:%02d %4.3f, %3.2f \n",timeinfo.tm_year + 1900,timeinfo.tm_mon + 1,timeinfo.tm_mday,timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec, pressure_h, temperature);  
    Serial.printf("%02d/%02d/%02d %02d:%02d:%02d %4.3f, %3.2f \n",timeinfo.tm_year + 1900,timeinfo.tm_mon + 1,timeinfo.tm_mday,timeinfo.tm_hour, timeinfo.tm_min, timeinfo.tm_sec, pressure_h, temperature);  

  t = t + 1;   
  if (t > xmax){               // if the signal line reached at the right end
      t = 0;                    // rest the signal position for x
      l = l + 1;                // iterate the signal line y position
    }  
  d = d + 1; 
  }
  myFile.close();		// close data file
  // capture screen
  Screen_Capture_BMP();
    //delay(5000);
}

void Screen_Capture_BMP(){
  lcd.setBrightness(10);       //バックライトを暗くする
  Serial.println("BMP_start");
 // std::size_t dlen;
  bool result = false;
//static constexpr char filename[] = "/lovyangfx_test.bmp";
  File file = SD.open("/"+ dateStr + "-" + timeStr + ".bmp", "w");
  if (file)
  {
    int width  = 480;
    int height = 320;

    int rowSize = (2 * width + 3) & ~ 3;
 //   Serial.println("rowSize=");
 //   Serial.println(rowSize);    
    lgfx::bitmap_header_t bmpheader;
    bmpheader.bfType = 0x4D42;
    bmpheader.bfSize = rowSize * height + sizeof(bmpheader);
    bmpheader.bfOffBits = sizeof(bmpheader);

    bmpheader.biSize = 40;
    bmpheader.biWidth = width;
    bmpheader.biHeight = height;
    bmpheader.biPlanes = 1;
    bmpheader.biBitCount = 16;
    bmpheader.biCompression = 3;
    file.write((std::uint8_t*)&bmpheader, sizeof(bmpheader));

    std::uint8_t buffer[rowSize];
    memset(&buffer[rowSize - 4], 0, 4);
    for (int yy = height - 1; yy >= 0; yy--)
    {
      lcd.readRect(0, yy, width, 1, (lgfx::rgb565_t*)buffer);
      file.write(buffer, rowSize);
    }
    file.close();

   Serial.println("BMP_end");   
    result = true;
   lcd.setBrightness(200);      //バックライトの明るさを戻す
  }
  else
  {
    Serial.print("error:file open failure\n");
  }
 // return result;
}

void wifi_start(){

    // We start by connecting to a WiFi network
    Serial.println();
    Serial.println();
    Serial.print("Connecting to ");
   
    Serial.println(ssid);
    
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("");
    Serial.println("WiFi connected.");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
    
    delay(1000);
    
   // NTPサーバと時刻を同期
    configTime(JST, 0, "ntp.nict.jp", "time.google.com", "ntp.jst.mfeed.ad.jp");  // adjust inner clock    
// 最初に初期化関数を呼び出します。
    getLocalTime(&timeinfo);      // get date and time from M5 inner clock
  // getLocalTime(&timeInfo); 
  // date and time for file naming
    dateStr = (String)(timeinfo.tm_year + 1900) 
         + "-" + (String)(timeinfo.tm_mon + 1)
         + "-" + (String)timeinfo.tm_mday;
    timeStr = (String)timeinfo.tm_hour
         + "_" + (String)timeinfo.tm_min
         + "_" + (String)timeinfo.tm_sec;  
    
    delay(1000);
//    WiFi.mode(WIFI_OFF);         // 2022-08-15 https://www.mgo-tec.com/blog-entry-m5stack-yahoo-weather-news-scrolle-watch-message.html
            
}