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ENCODERS.md: minor fixes.

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Peter Hinch 2022-04-16 13:55:52 +01:00
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@ -219,7 +219,13 @@ one LSB of positional uncertainty.
All valid solutions to a combinatorial logic problem are equivalent. The only All valid solutions to a combinatorial logic problem are equivalent. The only
ways in which one solution can be considered "better" than another are in ways in which one solution can be considered "better" than another are in
qualities such as performance and code size. Where decoders can differ in qualities such as performance and code size. Where decoders can differ in
quality is in their handling of interrupts. quality is in their handling of interrupts. The approach used in the
[Asynchronous driver](https://github.com/peterhinch/micropython-async/blob/master/v3/docs/DRIVERS.md#6-quadrature-encoders)
has the following characteristics:
1. Interrupt service routines are minimal.
2. Encoders with 2 or 4 pulses per detent are handled by selection of a single
integer.
3. The algorithm doesn't care about the polarity of the encoder signals.
## 7.3 Interrupt issues ## 7.3 Interrupt issues