Re-using code from Arduino Uno AVR for Portenta H7

Projects Programming
1

I have code that emulates I2C slaves for the Arduino Uno. I am trying to re-use the same code, but for the Portenta H7. However, when compiling the sketch, it cannot find / include a file since the original code is using the AVR core (Arduino Uno uses Atmel Atmega MCU). So I get the following error since Portenta is not AVR

C:\Users\cchen\AppData\Local\Arduino15\packages\arduino\hardware\mbed_portenta\3.3.0\libraries\Wire\utility\twi.c:26:10: fatal error: avr/io.h: No such file or directory
 #include <avr/io.h>
          ^~~~~~~~~~
compilation terminated.
exit status 1
Error compiling for board Arduino Portenta H7 (M4 core).

What can I do to reuse the code? Is there any way I can move some folders around so that it can find the file/directory? Or would it not work regardless since the MCU on the Portenta is ARM STM32 and not AVR? Thank you for your help.

2

We don't know what "it" is, because you didn't post the code.

It's impossible to answer, "will code that emulates I2C slaves for the Arduino Uno work on some other processor" in a definite way without getting into the details of that code. Because it is an implementation issue.

Did you write this code yourself?

3

You can't, on the Portenta. Any code that uses "avr/io.h" is specific to AVR processors.

4

BINGO!

5

Why is there a utilities directory under ...\libraries\Wire? It does not belong there. There should be only Wire.h and Wire.cpp.

6

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