Karl Zweimüller / mRotaryEncoder

Class mRotaryEncoder for mechanical incremental rotary encoders with pushbuttons. Use debouncing and callback-functions for rotation and pressing of button. This version is for old mbed. New version for mbed-os see https://os.mbed.com/users/charly/code/mRotaryEncoder-os/

Dependencies:   PinDetect

Dependents:   SimplePIDBot FinalProgram VS1053Player SPK-DVIMXR ... more

Files at this revision

API Documentation at this revision

Revision 11:24b34deae975, committed 2020-03-03

Comitter:
jirrick
Date:
Tue Mar 03 12:20:55 2020 +0000
Parent:
10:2502b829d452
Commit message:
configure detection of rise and fall events

Changed in this revision

mRotaryEncoder.cpp Show annotated file Show diff for this revision Revisions of this file
mRotaryEncoder.h Show annotated file Show diff for this revision Revisions of this file 
--- a/mRotaryEncoder.cpp	Fri Feb 26 20:18:57 2016 +0000
+++ b/mRotaryEncoder.cpp	Tue Mar 03 12:20:55 2020 +0000
@@ -2,7 +2,7 @@
 #include "mRotaryEncoder.h"
 
 
-mRotaryEncoder::mRotaryEncoder(PinName pinA, PinName pinB, PinName pinSW, PinMode pullMode, int debounceTime_us) {
+mRotaryEncoder::mRotaryEncoder(PinName pinA, PinName pinB, PinName pinSW, PinMode pullMode, int debounceTime_us, int detectRise, int detectFall) {
     m_pinA = new PinDetect(pinA);                      // interrrupts on pinA
     m_pinB = new DigitalIn(pinB);                      // only digitalIn for pinB
 
@@ -11,8 +11,12 @@
     m_pinB->mode(pullMode);
 
     // attach interrrupts on pinA
-    m_pinA->attach_asserted(this, &mRotaryEncoder::rise);
-    m_pinA->attach_deasserted(this, &mRotaryEncoder::fall);
+    if (detectRise != 0){
+        m_pinA->attach_asserted(this, &mRotaryEncoder::rise);
+    }
+    if (detectFall != 0){
+        m_pinA->attach_deasserted(this, &mRotaryEncoder::fall);
+    }
     
     //start sampling pinA
     m_pinA->setSampleFrequency(debounceTime_us);                  // Start timers an Defaults debounce time.

--- a/mRotaryEncoder.h	Fri Feb 26 20:18:57 2016 +0000
+++ b/mRotaryEncoder.h	Tue Mar 03 12:20:55 2020 +0000
@@ -34,6 +34,7 @@
  *     First version published Thomas Raab raabinator
  * 26.11.2010 extended by charly - pushbutton, pullmode, debounce, callback-system
  * Feb2011 Changes InterruptIn to PinDetect which does the debounce of mechanical switches
+ * Mar2020 Configurable detection of rise/fall events to account for different types of encoders (half as much dent points)
  *
  */
 class mRotaryEncoder {
@@ -45,8 +46,10 @@
     * @param pinSW Pin for push-button switch
     * @param pullmode mode for pinA pinB and pinSW like DigitalIn.mode
     * @param debounceTime_us time in micro-seconds to wait for bouncing of mechanical switches to end
+    * @param detectRise Detect rise event as new rotation
+    * @param detectFall Detect fall event as new rotation
     */
-    mRotaryEncoder(PinName pinA, PinName pinB, PinName pinSW, PinMode pullMode=PullUp, int debounceTime_us=1000);
+    mRotaryEncoder(PinName pinA, PinName pinB, PinName pinSW, PinMode pullMode=PullUp, int debounceTime_us=1000, int detectRise=1, int detectFall=1);
 
     /** destroy object
     *