suu pen / DigitalSw

This library is push button or dipSw noise cancel and on/off edge recognition

Dependents:   led-sound_checker clockGenerator

Fork of DigitalSw by suu pen

sample program "DigitalSW_hello" https://developer.mbed.org/users/suupen/code/DigitalSW_hello/rev/ffa16c2a347f

Files at this revision

API Documentation at this revision

Revision 3:ea853fc7172d, committed 2016-10-27

Comitter:
suupen
Date:
Thu Oct 27 06:35:32 2016 +0000
Parent:
2:08137bac3611
Child:
4:1ae29d30a441
Commit message:
This commit is PinMode(PullUp or PullDown) select

Changed in this revision

DigitalSw.cpp Show annotated file Show diff for this revision Revisions of this file
DigitalSw.h Show annotated file Show diff for this revision Revisions of this file 
--- a/DigitalSw.cpp	Thu Oct 27 02:03:28 2016 +0000
+++ b/DigitalSw.cpp	Thu Oct 27 06:35:32 2016 +0000
@@ -7,12 +7,12 @@
 /**
  *
  */
-DigitalSw::DigitalSw(PinName sw
-                    ) : _sw(sw)
+DigitalSw::DigitalSw(PinName sw, PinMode pull = PullUp
+                    ) : _sw(sw), _pull(pull)
 {
 
     reset();
-    _sw.mode(PullUp);
+    _sw.mode(_pull);
 
     _swCheckPeriod.attach_us(this, &DigitalSw::swCheck, 10000);
 
@@ -54,7 +54,12 @@
 {
     static uint8_t levelBuffer = 0;
 
+    if(_pull == PullUp){
     levelBuffer = (levelBuffer << 1) | !_sw;
+    }
+    else{
+    levelBuffer = (levelBuffer << 1) | _sw;
+        }
 
     if(levelBuffer == 0x00) {
         _levelNow = 0;

--- a/DigitalSw.h	Thu Oct 27 02:03:28 2016 +0000
+++ b/DigitalSw.h	Thu Oct 27 06:35:32 2016 +0000
@@ -76,7 +76,7 @@
      *  @param sw pin
      *  @note  nothing
      */
-    DigitalSw(PinName sw);
+    DigitalSw(PinName sw, PinMode pull);
 
     /**
      * Reset the edge and level.
@@ -114,6 +114,7 @@
    
     DigitalIn _sw;
 
+    PinMode _pull;
     volatile int16_t _onEdge;
     volatile int16_t _offEdge;
     volatile int16_t _levelNow;