Revision 0:dc197298a382, committed 2021-01-05

Comitter:

JeroenAero

Date:

Tue Jan 05 14:38:14 2021 +0000

Commit message:

Debounce working, only NULL functions will fault;

Changed in this revision

diff -r 000000000000 -r dc197298a382 Debounce.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Debounce.cpp	Tue Jan 05 14:38:14 2021 +0000
@@ -0,0 +1,47 @@
+#include "mbed.h"
+#include "Debounce.h"
+
+Debounce::Debounce(PinName Pin, int DebounceMS, void (*RiseFunction)(), void (*FallFunction)()) : Input(Pin)
+{
+    Input.mode(PullUp); //Set the input to pull up or pull down.
+    DebounceTime = (float)DebounceMS / 1000;    //Calculate the debouncetime in seconds.
+    Input.rise(callback(this,&Debounce::InputRise));
+    Input.fall(callback(this,&Debounce::InputFall));  
+    RiseFunctionPointer = RiseFunction;
+    FallFunctionPointer = FallFunction;
+}
+
+void Debounce::InputRise()
+{
+    //This function will get called when the input rises.
+    InputRiseTick.attach(callback(this, &Debounce::RiseTick), DebounceTime); //Attach a ticker with the desired check time and call the function risetick when time's up.
+}
+
+void Debounce::InputFall()
+{
+    //This function will get called when the input falls.
+    InputFallTick.attach(callback(this, &Debounce::FallTick), DebounceTime); //Attach a ticker with the desired check time and call the function risetick when time's up.
+}
+
+void Debounce::RiseTick()
+{
+    //This function will get called after a set time from the last rise event.
+    InputRiseTick.detach(); //detach the ticker, as we only use it once.
+    if (Input) //Check wheter or not the input is still high.
+    {
+        //Input is still high after the last rise event.
+        (*RiseFunctionPointer)();  //Call the rise function. 
+          
+    }
+}
+
+void Debounce::FallTick()
+{
+    //This function will get called after a set time from the last fall event.
+    InputFallTick.detach(); //detach the ticker, as we only use it once.
+    if (!Input) //Check wheter or not the input is still low.
+    {
+        //Input is still low after the last fall event.
+        (*FallFunctionPointer)();   
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r dc197298a382 Debounce.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Debounce.h	Tue Jan 05 14:38:14 2021 +0000
@@ -0,0 +1,27 @@
+#ifndef MBED_DEBOUNCE_H
+#define MBED_DEBOUNCE_H
+
+#include "mbed.h"
+
+class Debounce {
+
+    public:
+        Debounce(PinName Pin, int DebounceMS, void (*RiseFunction)(), void (*FallFunction)());
+  
+    private:
+        InterruptIn Input;  
+        Ticker InputRiseTick;
+        Ticker InputFallTick;
+        
+        float DebounceTime;
+        
+        void InputRise();
+        void InputFall();
+        void RiseTick();
+        void FallTick();
+        
+        void (*FallFunctionPointer)();
+        void (*RiseFunctionPointer)();
+};
+
+#endif
\ No newline at end of file