Arduino control Eeprom by IIC method of using device address in Arduino

参考：

1.https://www.arduino.cc/

2.https://www.arduino.cc/reference/en/

3.https://www.arduino.cc/en/Reference/Wire

4.https://www.arduino.cc/en/Reference/WireRead

5.https://www.arduino.cc/en/Reference/WireWrite

6.https://github.com/settings/installations

写入方法：

void  writeway(int address , int val)
{
  Wire.beginTransmission(0x50); // transmit to device #44 (0x2c)    // eeprom device address 0x50
                               // device address is specified in datasheet

 Wire.write(address);
  Wire.write(val);             // sends value byte  
  Wire.endTransmission();     // stop transmitting

  val++;        // increment value
  if(val == 64) // if reached 64th position (max)
  {
    val = 0;    // start over from lowest value
  }
  delay(5);
}

读取方法：

int readway (int address)
{

 Wire.beginTransmission(0x50); // transmit to device #44 (0x2c)    // eeprom device address 0x50                                // device address is specified in datasheet

 Wire.write(address);         // sends value byte  

 Wire.endTransmission();     // stop transmitting

  Wire.requestFrom(2, 6);    // request 6 bytes from slave device #2

  while(Wire.available())    // slave may send less than requested
  {
  //  char c = Wire.read();    // receive a byte as character
 //   Serial.print(c);         // print the character
  }

return Wire.read();
}