const int BUTTON = 2;
const int LED = 3;
int BUTTONstate = 0;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include<Wire.h>
const int MPU=0x68; 
int16_t AcX,AcY,AcZ,Tmp,GyX,GyY,GyZ;

#include "SdFat.h"
#define SPI_SPEED SD_SCK_MHZ(4)
#define CS_PIN 10


void setup()
{
  pinMode(BUTTON, INPUT);
  pinMode(LED, OUTPUT);
	
  lcd.init();
  lcd.backlight();
  
  Wire.begin();
  Wire.beginTransmission(MPU);
  Wire.write(0x6B); 
  Wire.write(0);    
  Wire.endTransmission(true);
  Serial.begin(9600);

  Serial.begin(115200);
Serial.print("Initializing SD card... ");
if (!SD.begin(CS_PIN)) {
Serial.println("Card initialization failed!");
while (true);
}
Serial.println("initialization done.");
Serial.println("Files in the card:");
root = SD.open("/");
printDirectory(root, 0);
Serial.println("");
// Example of reading file from the card:
File textFile = SD.open("wokwi.txt");
if (textFile) {
Serial.print("wokwi.txt: ");
while (textFile.available()) {
Serial.write(textFile.read());
}
textFile.close();
} else {
Serial.println("error opening wokwi.txt!");
}

}

void loop()
{

  BUTTONstate = digitalRead(BUTTON);
  if (BUTTONstate == HIGH)
  {
    lcd.setCursor(0,0);
    digitalWrite(LED, HIGH);
    lcd.print("start");

    Wire.beginTransmission(MPU);
  Wire.write(0x3B);  
  Wire.endTransmission(false);
  Wire.requestFrom(MPU,12,true);  
  AcX=Wire.read()<<8|Wire.read();    
  AcY=Wire.read()<<8|Wire.read();  
  AcZ=Wire.read()<<8|Wire.read();  
  GyX=Wire.read()<<8|Wire.read();  
  GyY=Wire.read()<<8|Wire.read();  
  GyZ=Wire.read()<<8|Wire.read();  
  
  Serial.print("Accelerometer: ");
  Serial.print("X = "); Serial.print(AcX);
  Serial.print(" | Y = "); Serial.print(AcY);
  Serial.print(" | Z = "); Serial.println(AcZ); 
  
  Serial.print("Gyroscope: ");
  Serial.print("X = "); Serial.print(GyX);
  Serial.print(" | Y = "); Serial.print(GyY);
  Serial.print(" | Z = "); Serial.println(GyZ);
  Serial.println(" ");
  delay(500);
  } 
  else{
    lcd.setCursor(0,0);
    digitalWrite(LED, LOW);
    lcd.print("OFF  ");


  // nothing happens after setup finishes.
}
void printDirectory(File dir, int numTabs) {
while (true) {
File entry =  dir.openNextFile();
if (! entry) {
// no more files
break;
}
for (uint8_t i = 0; i < numTabs; i++) {
Serial.print('\t');
}
Serial.print(entry.name());
if (entry.isDirectory()) {
Serial.println("/");
printDirectory(entry, numTabs + 1);
} else {
// files have sizes, directories do not
Serial.print("\t\t");
Serial.println(entry.size(), DEC);
}
entry.close();
}
  }
}