Revision 0:bf95f897e13f, committed 2017-10-24

Comitter:

motley

Date:

Tue Oct 24 13:32:11 2017 +0000

Commit message:

First

Changed in this revision

diff -r 000000000000 -r bf95f897e13f SwitchManager.hpp
--- /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();
+    }
+};
\ No newline at end of file

diff -r 000000000000 -r bf95f897e13f main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 24 13:32:11 2017 +0000
@@ -0,0 +1,50 @@
+#include "mbed.h"
+#include "SwitchManager.hpp"
+ 
+#define N 1000000
+#define RELEASED 0
+#define PRESSED  1
+ 
+//Function prototypes
+void isr1();
+void isr2();
+void isrTick();
+ 
+//Hardware objects
+DigitalOut red_led(PE_15);     //CountUp is in its critical section
+DigitalOut yellow_led(PB_10);  //CountDown is in its critical section
+DigitalOut green_led(PB_11);   //counter != 0
+DigitalOut onboardLED(LED1);
+ 
+InterruptIn sw1(PE_12);
+InterruptIn sw2(PE_14);
+Ticker yellowTick;
+ 
+void toggleYellowISR() {
+    yellow_led = !yellow_led;    
+}
+    
+int main() {
+    
+    //Light up
+    red_led    = 1;
+    yellow_led = 1;
+    green_led  = 1;
+    onboardLED = 0;
+ 
+    //Interrupt controlled red led using sw1
+    SwitchManager sm1(sw1, red_led);
+ 
+    //Interrupt controlled red led using sw2    
+    SwitchManager sm2(sw2, green_led);    
+    
+    //Simple ticker
+    yellowTick.attach(&toggleYellowISR, 0.5);
+    
+    //Now loop forever
+    while(1) { 
+        sleep();
+    };
+}
+ 
+ 
\ No newline at end of file

diff -r 000000000000 -r bf95f897e13f mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Oct 24 13:32:11 2017 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/b484a57bc302
\ No newline at end of file