Circuitry sample for PS/2 Mouse (#3959)
Added a sample circuitry for handling the connection of a PS/2 Mouse. Even if it's written that a circuitry is needed, there're a lot of other things and the information gets lost really fast. A really simple sample helps to remember who wants to implement the functionality about the circuitry.
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@ -6,6 +6,24 @@ To hook up a Trackpoint, you need to obtain a Trackpoint module (i.e. harvest fr
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There are three available modes for hooking up PS/2 devices: USART (best), interrupts (better) or busywait (not recommended).
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### The Cirtuitry between Trackpoint and Controller
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To get the things working, a 4.7K drag is needed between the two lines DATA and CLK and the line 5+.
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```
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DATA ----------+--------- PIN
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4.7K
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MODULE 5+ --------+--+--------- PWR CONTROLLER
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4.7K
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CLK ------+------------ PIN
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```
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### Busywait Version
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Note: This is not recommended, you may encounter jerky movement or unsent inputs. Please use interrupt or USART version if possible.
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