Well I note that under windows, the IDE installed itself completely in my C:\program Files\Arduino\ directory, all as a Read Only tree. Really! Thats very good to know! So The IDE re-compiles even library changes automatically? There's no separate "librarian" or "Export" file to tell it what new methods or overloads to export? If so, thats great news to me. ino in Arduino IDE and it will use that edited library. h, and you can open them in a text editor and change them, and if you save it, you can recompile your. If you go into a library folder you will see the. h files in the Arduino libraries directory, by default under C/Documents/Arduino/libraries/. The Arduino Due has two I2C / TWI interfaces SDA1 and SCL1 are near to the AREF pin and the additional one is on pins 20 and 21.Īs a reference the table below shows where TWI pins are located on various Arduino boards. On the Arduino boards with the R3 layout (1.0 pinout), the SDA (data line) and SCL (clock line) are on the pin headers close to the AREF pin. This library allows you to communicate with I2C / TWI devices. I had hoped to make considerable use of I2C communication.Thanks for any tips.ĭescription of my WIRE library in the doc files. So does this mean I need to modify the existing library or scratch build my own I2D support? If so, I probably should ask for an article explaining the proper way to compile my own source (scratch or modified) into a new linkable library, and install it for my own use. However, looking at library description in my help files, I notice my NANO boards aren't mentioned, and since the only pins adjacent to my analog reference are A0 and A1 (analog I/O I assume), this doesn't sound right (I'd expect to see digital I/O pins used). I was looking for I2C support hoping to not have to write one from scratch linking devices to my NANO boards, and I ran across the WIRE library.
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