Revision 1:7d24b4076453, committed 2015-04-01

Comitter:

michaelruck

Date:

Wed Apr 01 05:43:10 2015 +0000

Parent:

0:1330a261101d

Commit message:

Added Timeout to prevent isr chattering

Changed in this revision

diff -r 1330a261101d -r 7d24b4076453 EncoderSwitch.cpp
--- a/EncoderSwitch.cpp	Sun Mar 29 08:40:31 2015 +0000
+++ b/EncoderSwitch.cpp	Wed Apr 01 05:43:10 2015 +0000
@@ -15,7 +15,7 @@
 
     _pinB.fall(this, &EncoderSwitch::isrb);
     _pinB.rise(this, &EncoderSwitch::isrb);
-
+    
     _limit_down=0;
     _limit_up=9;
     _increment=0;
@@ -23,8 +23,17 @@
 
 EncoderSwitch::~EncoderSwitch() {/*none*/}
 
+void EncoderSwitch::_enable_isr()
+{
+    _pinA.enable_irq();
+    _pinB.enable_irq();
+}
+
 void EncoderSwitch::isra()
 {
+    _pinA.disable_irq();
+    _pinB.disable_irq();
+    _timeout.attach_us(this, &EncoderSwitch::_enable_isr, 500);
     int8_t state_a = _pinA.read();
     int8_t state_b = _pinB.read();
     if(state_a != state_b) _increment = 1;
@@ -36,6 +45,9 @@
 
 void EncoderSwitch::isrb()
 {
+    _pinA.disable_irq();
+    _pinB.disable_irq();
+    _timeout.attach_us(this, &EncoderSwitch::_enable_isr, 500);
     int8_t state_a = _pinA.read();
     int8_t state_b = _pinB.read();
     if(state_a != state_b) _increment = -1;

diff -r 1330a261101d -r 7d24b4076453 EncoderSwitch.h
--- a/EncoderSwitch.h	Sun Mar 29 08:40:31 2015 +0000
+++ b/EncoderSwitch.h	Wed Apr 01 05:43:10 2015 +0000
@@ -19,6 +19,9 @@
     InterruptIn _pinA;
     InterruptIn _pinB;
     
+    Timeout _timeout;
+    void _enable_isr();
+    
     int16_t _limit_down;
     int16_t _limit_up;
     volatile int8_t _increment;