VS Arduino - Uno works well. Compile error with Arduino Uno R4 Minima

Oct 18^th, 2025 at 1:30pm (UTC)

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VS Arduino › Visual Micro › Visual Studio 2019, 2022, 2026 › Uno works well. Compile error with Arduino Uno R4 Minima

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Uno works well. Compile error with Arduino Uno R4 Minima (Read 976 times)

Henk Levels Junior Member Offline Posts: 81 Joined: Sep 28^th, 2015	Uno works well. Compile error with Arduino Uno R4 Minima Mar 18^th, 2024 at 10:54am	Print Post
	Hi I have some code that compiles well under visual studio 2022, with micro controller application Arduino 2 and an Arduino Uno board. However when I compile the same code with a Arduino Uno R4 Minima board selected I get several errors - avr\io.h: No such file or directory - avr\sleep.h: No such file or directory - and some more errors like PortsBMP085.cpp:7: In file included from ports.h: In member function void Port::shift(uint8_t, uint8_t) const ports.h: 112:58: error: invalid conversion from 'uint8_t {aka unsigned char}' to 'BitOrder' [-fpermissive] { shiftOut(digiPin(), digiPin2(), bitOrder, value); } How can this be solved?


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Simon@Visual Micro Administrator Offline Posts: 2789 Joined: Feb 13^th, 2019	Re: Uno works well. Compile error with Arduino Uno R4 Minima Reply #1 - Mar 18^th, 2024 at 11:39am	Print Post
	The Arduino Uno board has a very different core and architecture to the Arduino Uno R4 board, so a different set of core code is used. Both boards are called Uno and have the same form factor for shields etc, however that is where the similarities end in reality. This is likely why the same IO and Sleep headers cannot be found, along with the Port Shift functions. You will need to use the functions and headers available on the Uno R4 specifically.


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