Eduardo de Mier / UIEncoder

Library for manual Encoders as used in user interfaces. Very simple, reduced and rock solid encoder library. Counts full pulses only. Inherent debouncing through state machine. Running on a regular timer IRQ. No IRQ jamming through bouncing. Immune to false edges giving unwanted counts when moving partial steps. Not depending on PinDetect or anything else. May be enhanced by adding acceleration and push button debouncing in the future.

Library for manual Encoders as used in user interfaces. Very simple, reduced and rock solid. Counts full pulses/steps only. Inherent debouncing through state machine. No time dependency for debouncing. Very tight code running in a regular timer IRQ. No IRQ jamming through bouncing edges. Immune to false edges giving unwanted counts when moving partial steps back and forth. Not depending on PinDetect or any other debouncing library. May be enhanced in the near future by adding acceleration and push button debouncing.

--- a/EncoderConfig.h	Wed Nov 26 09:40:40 2014 +0000
+++ b/EncoderConfig.h	Wed Dec 17 19:35:25 2014 +0000
@@ -28,13 +28,14 @@
 #define ENCODER_CONFIG_H_
 
 // Chose encoder pins
+// First tested with Nucleo STM32F302
 #define ENCODER_PIN_A D6
 #define ENCODER_PIN_B D7
 
 // Sample every ... microseconds, default
 // 250µs is a good value for cheap 24 ppr encoders (ALPS EC12E24...) with strong bouncing.
 // 1000µs is a good value for quality 24 ppr encoders (ALPS EC12E24...) with low bouncing.
-// 250µs is a good value for fast 24+ ppr encoders (Sparkfun, Qubig Panel1 type...).
+// 250µs is a good value for fast 24+ ppr encoders (Sparkfun, Some Bourns types, ...).
 #define ENCODER_SAMPLE_PERIOD_US (250)