Diff: main.cpp

Revision:

0:69af4e3595b6

Child:

1:fdf9ceb4a107

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 08 11:46:22 2016 +0000
@@ -0,0 +1,95 @@
+#include "mbed.h"
+#include "rtos.h"
+
+#define RED_TOGGLE    1
+#define YELLOW_TOGGLE 2
+#define GREEN_TOGGLE  4
+
+//Function declarations
+void FunctionRed(void const *args);
+void FunctionYellow(void const *args);
+void FunctionGreen(void const *args);
+
+//I/O
+DigitalOut onBoardLED(LED1);
+DigitalOut redLED(D7);
+DigitalOut yellowLED(D6);
+DigitalOut greenLED(D5);
+
+DigitalIn  onBoardSwitch(USER_BUTTON);
+DigitalIn  SW1(D4);
+DigitalIn  SW2(D3);
+
+
+//Each of the following 3 functions is listening for a signal
+void FunctionRed(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(RED_TOGGLE);  
+        redLED = !redLED;                   
+    }
+}
+
+void FunctionYellow(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(YELLOW_TOGGLE);
+        yellowLED = !yellowLED;
+    }
+}
+
+void FunctionGreen(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(GREEN_TOGGLE);
+        greenLED = !greenLED;
+    }
+}
+
+//Main thread
+int main() {
+    redLED    = 0;
+    yellowLED = 0;
+    greenLED  = 0;
+        
+    //Create and run threads
+    Thread t1(FunctionRed);           
+    Thread t2(FunctionYellow);    
+    Thread t3(FunctionGreen);   
+    
+    //Main loop
+    while(1) {
+        
+        //Read stdin (serial port)
+        int selection, hits;
+        char strInput[64];
+        do {
+            puts("Please choose:");
+            puts("1 - Red");
+            puts("2 - Yellow");
+            puts("3 - Green");            
+            scanf("%64s", strInput);                    //Read a string
+            hits = sscanf(strInput, "%d", &selection);  //Look for an integer
+        } while (hits != 1);                            //Repeat if not found
+        
+        //Signal the thread
+        switch (selection) {
+        case 1:
+            //Signal thread 1
+            t1.signal_set(RED_TOGGLE);
+            break;
+        case 2:
+            //Signal thread 2
+            t2.signal_set(YELLOW_TOGGLE);
+            break;
+        case 3:
+            //Signal thread 3
+            t3.signal_set(GREEN_TOGGLE);
+            break;
+        default:
+            puts("Invalid option");
+            break;
+        } //end switch
+        
+    } //end while
+} //end main