Diff: main.cpp

Revision:

0:90e393878517

Child:

1:948bd552a2a2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Mar 08 11:44:46 2016 +0000
@@ -0,0 +1,108 @@
+#include "mbed.h"
+#include "rtos.h"
+
+#define RED_OFF    1
+#define YELLOW_OFF 2
+#define GREEN_OFF  4
+#define ALL_OFF    7
+
+//Function declarations
+void Function1(void const *args);
+void Function2(void const *args);
+void Function3(void const *args);
+void Function4(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);
+
+Thread* t1;
+Thread* t2;
+Thread* t3;
+Thread* t4;
+
+//Thread ID
+osThreadId idMain;
+osThreadId id1;
+osThreadId id2;
+osThreadId id3;
+osThreadId id4;
+
+void Function1(void const *args)
+{
+    while (true) {
+        redLED = !redLED;
+        if (redLED == 0) {
+            t2->signal_set(RED_OFF);
+        }
+        Thread::wait(1000);
+    }
+}
+
+void Function2(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(RED_OFF);
+        yellowLED = !yellowLED;
+        if (yellowLED == 0) {
+            t3->signal_set(YELLOW_OFF);
+        }
+    }
+}
+
+//Green Flashing
+void Function3(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(YELLOW_OFF);
+        greenLED = !greenLED;
+        if (greenLED == 0) {
+            t4->signal_set(GREEN_OFF);
+        }       
+    }
+}
+
+//This function waits for signals from all other threads
+void Function4(void const *args)
+{
+    while (true) {
+        Thread::signal_wait(GREEN_OFF);
+        //Signal main thread       
+        osSignalSet(idMain, ALL_OFF);              
+    }
+}
+
+//Main thread
+int main() {
+    redLED    = 0;
+    yellowLED = 0;
+    greenLED  = 0;
+    
+    //Main thread ID
+    idMain = osThreadGetId();   //CMSIS RTOS call
+    
+    //Create and run threads
+    t4 = new Thread(Function4);
+    t1 = new Thread(Function1);           
+    t2 = new Thread(Function2);    
+    t3 = new Thread(Function3);     //Dynamically allocated
+
+    
+    //Thread ID
+    id1 = t1->gettid();
+    id2 = t2->gettid();
+    id3 = t3->gettid();
+    id4 = t4->gettid();
+    
+    while(1) {
+        //Wait for the ALL_ON signal
+        osSignalWait(ALL_OFF,osWaitForever);
+        printf("ALL OFF\n");
+    }
+}