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MCUdude / MightyCore

Arduino hardware package for ATmega1284, ATmega644, ATmega324, ATmega324PB, ATmega164, ATmega32, ATmega16 and ATmega8535
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Serial.printf not working with Platformio #222

Closed toogooda closed 2 years ago

toogooda commented 2 years ago

I love your core with Arduino but I can't work out how to use it with platformio, when selecting boards nothing shows up for Mightycore or MCUdude. Your platformio.ini example doesn't seem to reference mightycore at all so it was hard to see what to add to be using your core. I have tried to follow your platformio guide to get the printf working but the suggested build flag does not work.

[env:644pa8m]
platform = atmelavr
board = 644pa8m
framework = arduino
lib_deps = 
    chris--a/Keypad@^3.1.1
build_flags = -lprintf_flt

printf is undefined...

MCUdude commented 2 years ago

Hi! board = 644pa8m is not a valid MightyCore board type, So you're probably using the old Sanguino core without knowing.

If you look at the MightyCore PlatformIO README, you can see that you'll have to use board = ATmega644P instead. Then you'll have to specify your clock frequency with board_build.f_cpu.

toogooda commented 2 years ago

Thank you I have it working now and the template was very helpful now that I worked out I can just change the default at the top change between USB/ISP/Bootloader. I don't see anything listed under MCUDUDE or Mightycore when I use the create project from Platformio home the ones listed in your readme seem to be (Microchip)...

So is the correct procedure when using Mightycore in Platformio to chose any board then overwrite the ini with the template?

Thanks again for your help, your cores are legendary!