Code samples in the reference are released into the public domain. 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(). Arduino/libraries/Wire directory on the machine you write your code on. 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. The Wire Library is a series of files in plain text that exist in the. It is easily found in the market and can be a cheaper alternative if the RDS/RBDS function is not needed. On most Arduino boards, SDA (data line) is on analog input pin 4, and SCL (clock line) is on analog input pin 5. The SI4702 Except for the SDR/RDBS feature, the SI4702 has all the functions available in the SI4703. shift the value one bit to the right), yielding an address between 0 and 127. If you have a datasheet or sample code that uses 8 bit address, youll want to drop the low bit (i.e. This library allows you to communicate with I2C / TWI devices. The Wire library uses 7 bit addresses throughout. Reference Language | Libraries | Comparison | Changes Arduino - Wire Reference Language Libraries Comparison Changes Wire Library This library allows you to communicate with I2C / TWI devices.
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