#include <Wire.h>    // For I2C communication
#include <SPI.h>     // For SPI communication

#define MPU6050_ADDR 0x68  // I2C address for MPU6050 (typically 0x68)

void setup() {
  // Start serial communication for debugging
  Serial.begin(9600);

  // Initialize I2C communication
  Wire.begin();
  
  // Initialize SPI communication as master
  SPI.begin();
  
  // Set SPI settings: MSB, 8-bit, clock speed of 1 MHz
  SPI.beginTransaction(SPISettings(1000000, MSBFIRST, SPI_MODE0));

  // Wake up the MPU6050 sensor by writing to the power management register
  Wire.beginTransmission(MPU6050_ADDR);
  Wire.write(0x6B);  // Power management register
  Wire.write(0);     // Wake up
  Wire.endTransmission(true);
}

void loop() {
  // Request data from the MPU6050 (simulating I2C)
  Wire.beginTransmission(MPU6050_ADDR);
  Wire.write(0x3B);  // Register for the first accelerometer data (ACCEL_XOUT_H)
  Wire.endTransmission(false);
  Wire.requestFrom(MPU6050_ADDR, 14, true);  // Request 14 bytes (6 for accelerometer, 6 for gyroscope, 2 for temperature)

  // Read the accelerometer data (ACCEL_X, ACCEL_Y, ACCEL_Z)
  int16_t accelX = (Wire.read() << 8) | Wire.read();
  int16_t accelY = (Wire.read() << 8) | Wire.read();
  int16_t accelZ = (Wire.read() << 8) | Wire.read();

  // Send the accelerometer data over SPI to the second Arduino (Slave)
  SPI.transfer(accelX >> 8);  // Send the high byte of accelX
  SPI.transfer(accelX & 0xFF);  // Send the low byte of accelX
  SPI.transfer(accelY >> 8);  // Send the high byte of accelY
  SPI.transfer(accelY & 0xFF);  // Send the low byte of accelY
  SPI.transfer(accelZ >> 8);  // Send the high byte of accelZ
  SPI.transfer(accelZ & 0xFF);  // Send the low byte of accelZ

  // Wait before the next loop
  delay(1000);
}