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GPIO is an acronym for general purpose input/output. The term is typically applied to a pin on a microcontroller (or other device) that may be changed between an input and output under software control. It can be used for an application defined purpose, as opposed to being constrained to a single designated function.

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I'm trying to make a project using the ATSAM4LS2A microcontroller (Cortex M4), and i'm using the AtmelICE debugger. The thing is the pinout for the SWD mode also has, beside the SWCLK and SWDIO pins, …
asked Jun 2 '16 by user3808318
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I kinda forgot i posted this question here, but in the meantime I found the answer on some other site that I can't find right now. You can disable the SWO functionality simply through this code: #in …
answered Feb 26 '17 by user3808318