c - Get string of keys pressed over terminal -

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i'm writing own ascii game engine in bare metal on raspberry pi 3.

i'd create keyboard interface work planned nes controller on gpio. way can swap input i'm using or have multiplayer support.

my question is, possible (maybe using vt100 or like) query putty string of keys being pressed @ given time? plan pull state of button being pressed (ie no interrupts).

how can ask or receive keys being pressed? i'm assuming putty wont send me keys pressed in scenario: + b + left arrow.

thanks :)


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