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

Diff: DigitalSw.cpp

Revision:
5:9198c5c0afcb
Parent:
0:45e3ec3004a6
--- a/DigitalSw.cpp	Sun Oct 23 09:46:01 2016 +0000
+++ b/DigitalSw.cpp	Sat Oct 29 01:46:17 2016 +0000
@@ -7,8 +7,8 @@
 /**
  *
  */
-DigitalSw::DigitalSw(PinName sw
-                    ) : _sw(sw)
+DigitalSw::DigitalSw(PinName sw, uint8_t pull
+                    ) : _sw(sw), _pull(pull)
 {
 
     _onEdge = 0;
@@ -16,8 +16,12 @@
     _levelNow = 1;
     _levelOld = 1;
 
-    _sw.mode(PullUp);
-
+    if(_pull == 1) {
+        _sw.mode(PullUp);
+    } else {
+        _sw.mode(PullDown);
+    }
+    
     _sw.rise(this, &DigitalSw::swLevelUp);
     _sw.fall(this, &DigitalSw::swLevelDown);
 
@@ -60,6 +64,7 @@
     uint8_t levelCheck = 0xaa;
 
     while((levelCheck != 0x00) && (levelCheck != 0xff)) {
+        wait_us(100);
         levelCheck = (levelCheck << 1) | _sw.read();
     }
 
@@ -79,6 +84,7 @@
     uint8_t levelCheck = 0xaa;
 
     while((levelCheck != 0x00) && (levelCheck != 0xff)) {
+        wait_us(100);
         levelCheck = (levelCheck << 1) | _sw.read();
     }