zoukankan      html  css  js  c++  java
  • Arduino 寻找I2C地址address

    参考:http://henrysbench.capnfatz.com/henrys-bench/arduino-projects-tips-and-more/arduino-quick-tip-find-your-i2c-address/

    Arduino Quick Tip:  Find Your I2C Address

    Don’t Get Hung Up When You Want to Play

    I2C Address Scanner Quick Tip

    You’ve just received your new module and you want to test it.  You go back the seller’s web page and find instructions that are only slightly clearer than mud.  In fact, one of things you discover as you attempt to unravel the odd form of English that is used is that you can’t seem to figure out what the I2C address is.

    You can certainly find the data sheet for the device that the module is built around. With a little work, you should also be able to  identify the address pins.  Then, with a little probing,  you can identify the address.

    In fact, at some point in your project development, it may even become necessary.   Alas,  sometimes you only have a few minutes to play and you just want to see the freaking thing work.

    If that describes you, then try running the following sketch.  It will scan I2C possible addresses and report the address of the device that responds.

    address of the device that responds.



    I2C Scanner By Nick Gammon

    Copy, Paste, Upload and Run!

    // I2C Scanner
    // Written by Nick Gammon
    // Date: 20th April 2011
    
    #include <Wire.h>
    
    void setup() {
      Serial.begin (115200);
    
      // Leonardo: wait for serial port to connect
      while (!Serial) 
        {
        }
    
      Serial.println ();
      Serial.println ("I2C scanner. Scanning ...");
      byte count = 0;
      
      Wire.begin();
      for (byte i = 8; i < 120; i++)
      {
        Wire.beginTransmission (i);
        if (Wire.endTransmission () == 0)
          {
          Serial.print ("Found address: ");
          Serial.print (i, DEC);
          Serial.print (" (0x");
          Serial.print (i, HEX);
          Serial.println (")");
          count++;
          delay (1);  // maybe unneeded?
          } // end of good response
      } // end of for loop
      Serial.println ("Done.");
      Serial.print ("Found ");
      Serial.print (count, DEC);
      Serial.println (" device(s).");
    }  // end of setup
    
    void loop() {}
    
    

    I2C Scanner Results

    Run the sketch and you will see a result that looks something like this:

    I2C Scanner Results

  • 相关阅读:
    EF数据库初始化策略及种子数据的添加
    Win10 FaceAPI小demo开发问题汇总
    本地Git服务器的搭建及使用
    JSP利用freemarker生成基于word模板的word文档
    Mvc项目架构分享之项目扩展
    mvc项目架构搭建之UI层的搭建
    mvc项目架构分享系列之架构搭建之Repository和Service
    mvc项目架构分享系列之架构搭建之Infrastructure
    mvc项目架构分享系列之架构搭建初步
    [svc]HTTPS证书生成原理和部署细节
  • 原文地址:https://www.cnblogs.com/MCSFX/p/11774266.html
Copyright © 2011-2022 走看看