![]() ![]() Or you can refer to another method to add libraries. ![]() It is very easy for you to add the libraries in this way! Then, click to open the libraries folder, you can directly add the libraries inside the folder. Here we will introduce the most simple way for you to add librariesĪfter download well the Arduino IDE, you can right-click the icon of Arduino IDE.įind the option "Open file location" shown as below. To use the additional libraries, you will need to install them. The built-in libraries and some of these additional libraries are listed in the reference. There are hundreds of additional libraries available on the Internet for download. For example, the built-in LiquidCrystal library makes it easy to talk to character LCD displays. Libraries are a collection of code that makes it easy for you to connect to a sensor,display, module, etc. You may want to extend the ability of your Arduino with additional libraries. Code samples in the reference are released into the public domain.Once you are comfortable with the Arduino software and using the built-in functions, ![]() The text of the Arduino reference is licensed under aĬreative Commons Attribution-ShareAlike 3.0 License. shift the value one bit to the right), yielding an address between 0 and 127.Ĭorrections, suggestions, and new documentation should be posted to the Forum. If you have a datasheet or sample code that uses 8 bit address, you'll want to drop the low bit (i.e. The Wire library uses 7 bit addresses throughout. 7 bits identify the device, and the eighth bit determines if it's being written to or read from. There are both 7- and 8-bit versions of I2C addresses. Because of this, send() and receive() have been replaced with read() and write(). On the Arduino Mega, SDA is digital pin 20 and SCL is 21.Īs of Arduino 1.0, the library inherits from the Stream functions, making it consistent with other read/write libraries. On most Arduino boards, SDA (data line) is on analog input pin 4, and SCL (clock line) is on analog input pin 5. This library allows you to communicate with I2C / TWI devices. Reference Language | Libraries | Comparison | Changes ![]()
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