![]() ![]() Be very careful when opening those files though, that you don’t modify them or you’ll need to reinstall everything from scratch. No setup is required, however you can access the files that comprise the wire library in the program folders installed with your Arduino IDE. No schematic is associated with this module. Understand which functions are used with an Arduino Master and which are used with an Arduino Slave.Know which functions actually cause data to transmit and which are only preparatory.Learn the nine Wire Library functions and their purpose.Understand why the code is called the Wire Library and not the I2C Library.Since BUFFER_LENGTH is a macro defined in the Wire.h (see link below) I am asking if there are different libraries called "Wire" for each different processor on Arduino boards.Now that we have a firm understanding of how we need to structure the signals to communicate with an I2C component, let’s look at the Arduino Wire Library that will actually manage all of that signaling for us. 'BUFFER_LENGTH' was not declared in this scope When I choose the MKR Zero it terminates with an error: When I choose the Board "Pro Mini" all sketches compile correctly. ![]() Furthermore I use another library for a DMP (digital motion processor) which is connected via the I2C, so the library of the DMP is using the macros from Wire.h I am using the online Editor of Arduino and include the "Wire.h" standard library. ![]() I have an existing project for Pro Mini, but since the performance is not sufficient I want to change to the MKR Zero. As far as I know the Wire library is the same for all the boards no matter if I have a Pro Mini or a MKRZero, correct? ![]()
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