Hello, I have a question If I upload a new ino code to my Samd51 Would my prins of the micro controller stay at the same State as they are or would they reset back to all back to zero ?
Joseph
Just try it, but they will reset to tristate at powerup.
The answer is in the bootloader and in some cases (as with the ESP chips) the automatically bound binaries for device configuration & start-up.
For ARM bare-metal, this article continues the discussion...
ARM Cortex-M Startup code (for C and C++) - AllThingsEmbedded
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