_DFR0576_Gravity I2C_Multiplexer_Module_I2C扩展模块 - jimaobian/DFRobotWikiCn GitHub Wiki

 /*!
  * file Multi_SSD1306.ino
  *
  * Download Display library https://github.com/DFRobot/DFRobot_Display.git
  * Download SSD1306 library https://github.com/DFRobot/DFRobot_SSD1306.git
  *
  * Connect the 2 SSD1306 devices to the port 0 and  port 1 on the i2cmultiplexer respectively and then connect the I2cmultiplexer and Arduino, download this sample.
  * @n The address of I2C and the name of SSD1306 display module can be seen
  *
  * Copyright   [DFRobot](http://www.dfrobot.com), 2016
  * Copyright   GNU Lesser General Public License
  *
  * version  V0.1
  * date  2018-5-10
  */
#include "DFRobot_SSD1306_I2C.h"
#include "DFRobot_I2CMultiplexer.h"
#include "DFRobot_Character.h"
#include "DFRobot_GT30L.h"
#include <Wire.h>
#include <SPI.h>

/*Create an OLED object, the address is 0x3c*/
DFRobot_SSD1306_I2C OLED(0x3c);

/*Create an I2C Multiplexer object, the address of I2C Multiplexer is 0X70*/
DFRobot_I2CMultiplexer I2CMulti(0x70);


void setup(void){
  /*Let the OLED on port 0 display characters*/
  I2CMulti.selectPort(0);       //Select port
  OLED.begin();                 //initialize OLED
  OLED.setTextColor(1);
  OLED.setTextSize(2);

  OLED.setCursor(0,0);          // Set the corrdianate of characters
  OLED.print("device A");       //Display characters
  OLED.setCursor(0,30);
  OLED.print("addr:0x3C");

  /*Let OLED on  port 1 display  characters */
  I2CMulti.selectPort(1);
  OLED.begin();
  OLED.setTextColor(1);
  OLED.setTextSize(2);

  OLED.setCursor(0,0);
  OLED.print("device B");
  OLED.setCursor(0,30);
  OLED.print("addr:0x3C");
}

void loop(void){
}

#include "DFRobot_I2CMultiplexer.h"
#include <Wire.h>

DFRobot_I2CMultiplexer I2CMulti(0x70);   //Create an I2C Multiplexer Object;Default Address: 0x70

void setup(void)
{
  I2CMulti.selectPort(0);       //Select Port 0
  ...                           //Initialize the I2C Device on Port 0

  I2CMulti.selectPort(1);      //Select Port 1
  ...                          //Initialize the I2C Device on Port 1

   .
   .
   .

  I2CMulti.selectPort(8);      //Select Port 8
  ...                          //Initialize the I2C Device on Port 8
}

void loop(void)
{
  I2CMulti.selectPort(0);       //Select Port 0
  ...                           //Communicate with the I2C Device on Port 0

  I2CMulti.selectPort(1);      //Select Port 1
  ...                          //Communicate with the I2C Device on Port 1

   .
   .
   .

  I2CMulti.selectPort(8);      //Select Port 8
  ...                          //Communicate with the I2C Device on Port 8
}