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Author Topic: ATMega1284p issues with SD Card  (Read 1977 times)
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Hi Bratan.
I had the same problem today, I couldn't get an SD card to work with the SD library on an atmega 1284P with the mighty1284P 16 MHz optiboot bootloader.
The solution turned out to be a missing definition of the correct chip.

one needs to add "|| defined(__AVR_ATmega1284P__)" to the atmega644 line so that it reads:
#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)|| defined(__AVR_ATmega1284P__)
Then my code compiled and it now seems to run without a hitch.

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