AD525x - Arduino library for I2C communication with AD5253 and AD5254
This is a library for communication with AD5253 and AD5254 quad 64-/256-position I2C Nonvolatile Memory Digital Potentiometers. The features implemented are based on the datasheet provided by Analog Devices.
To use these, instantiate either an AD5253 or an AD5254 object (the main difference is in the error checking) and call
obj.initialize(AD_addr) to initialize communication with the device. The AD525x series potentiometers have a 5 bits of their 7-bit I2C address hard-coded as
0d44), and the two lowest bits can be programmed by pulling the
AD0 (pin 4) and
AD1 (pin 16) lines either high or low. The
initialize method of each AD525x object is instantiated with the 2-bit
AD1 AD0 address of the device - do not specify the hard-coded portion of the address, as that is already taken into account.
Due exception handling with
catch are too costly to be used on microcontrollers, in the event of an error in a member function, the private variable
err_code (which can be queried using
AD525x::get_err_code()) is set to one of the error codes defined in
AD525x_Errors.h. A small companion library,
AD525x_ErrorStrings.h is provided for interpreting the error codes into human readable strings. It is separated out from the main library to minimize unnecessary resource costs.
This code is licensed under the MIT license. If you would like to use it under a different license or you would like a waiver of the requirements of the MIT license, contact me.