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Using:

I was able to run my code successfully by modifying the file

[ardunoIDE]\hardware\arduino\avr\variants\standard\pins_arduino.h

building and then flashing the MCU with avrdude.

Is there any way to have Arduino IDE build system pick its pins_arduino.h file from somewhere else ?

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Yes, MiniCore is a self-contained hardware package. After installing MiniCore select one of the MiniCore boards in the Arduino IDE's Tools > Board menu and the Arduino IDE will automatically use the pins_arduino.h file included with MiniCore. There is no need to modify any file in the Arduino IDE folder or any other folder.

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  • Arduino IDE does not use the pins_arduino.h file included with MiniCore. Can you give me its path on your installation so I can at least check it is there ? – kellogs Apr 17 '17 at 11:21
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    Do this: Select a MiniCore board from the Tools > Board menu, File > Examples > AVR C code examples > Blink, Sketch > Show Sketch Folder, Navigate up 4 folder levels to the 1.0.3 folder. The pins_arduino.h file used for MiniCore boards is located under that folder in the variants/standard folder. – per1234 Apr 17 '17 at 12:14

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