Diff: SwitchManager.hpp

Revision:

0:bf95f897e13f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SwitchManager.hpp	Tue Oct 24 13:32:11 2017 +0000
@@ -0,0 +1,47 @@
+#include "mbed.h"
+ 
+//This class manages an Interrupt in and LED output
+//It automatically manages the switch-debounce using edge detection and timers
+class SwitchManager {
+private:
+// enum State {LOW, LOW_DEBOUNCE, HIGH, HIGH_DEBOUNCE};  
+    InterruptIn& switchInterrupt;
+    DigitalOut& led;
+    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() {
+        led = !led;
+        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, DigitalOut& gpio) : switchInterrupt(intIn), led(gpio) {
+        //Listen for rising edge
+        switchInterrupt.rise(callback(this, &SwitchManager::waitForRising));
+    }
+    ~SwitchManager() {
+        //Turn off LED and shut off any ISRs
+        led = 0;
+        switchInterrupt.rise(NULL);
+        switchInterrupt.fall(NULL);
+        t.detach();
+    }
+};
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