Diff: SwitchManager.hpp

Revision:

9:f5eae5211225

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SwitchManager.hpp	Fri Dec 07 13:24:50 2018 +0000
@@ -0,0 +1,57 @@
+#ifndef _SWITCHMANAGER_
+#define _SWITCHMANAGER_
+
+#include "mbed.h"
+#include "sample_hardware.hpp"
+#include "LCD.hpp"
+
+InterruptIn sw1(PE_12);
+
+//This class manages an Interrupt attached to a button
+//It automatically manages the switch-debounce using edge detection and timers
+
+class SwitchManager {
+private:
+// enum State {LOW, LOW_DEBOUNCE, HIGH, HIGH_DEBOUNCE};  
+    InterruptIn& switchInterrupt;
+    Timeout t;
+    
+    void waitForRising() {
+        //Turn off interrupt
+        switchInterrupt.rise(NULL);
+        //Turn on timer
+        t.attach(callback(this, &SwitchManager::waitForStabilityRising), 0.2);
+    }
+    
+    void waitForStabilityRising() {
+        //Look for falling edge
+        switchInterrupt.fall(callback(this, &SwitchManager::waitForFalling));
+    }
+    
+    void waitForFalling() {
+        m_oDisplay.LCD_Queue.call(&m_oDisplay, &LCD_Data::update_time_date);
+        switchInterrupt.fall(NULL);
+        t.attach(callback(this, &SwitchManager::waitForStabilityFalling), 0.2);
+    }
+    
+    void waitForStabilityFalling() {
+        //Look for rising edge
+        switchInterrupt.rise(callback(this, &SwitchManager::waitForRising));
+    }
+    
+public:
+    SwitchManager(InterruptIn& intIn) : switchInterrupt(intIn) {
+        //Listen for rising edge
+        switchInterrupt.rise(callback(this, &SwitchManager::waitForRising));
+    }
+    ~SwitchManager() {
+        //Turn off LED and shut off any ISRs
+        switchInterrupt.rise(NULL);
+        switchInterrupt.fall(NULL);
+        t.detach();
+    }
+};
+     
+SwitchManager sm1(sw1);       
+
+#endif
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