Revision 6:ddffcc0aeba1, committed 2018-03-09

Comitter:

Peilingyi

Date:

Fri Mar 09 23:31:49 2018 +0000

Parent:

5:9817756efc34

Commit message:

Lab6-1

Changed in this revision

--- a/main.cpp	Tue Feb 27 10:29:30 2018 +0000
+++ b/main.cpp	Fri Mar 09 23:31:49 2018 +0000
@@ -14,35 +14,51 @@
 DigitalIn button(PTD0, PullUp);
 DigitalOut led1(PTC12, OFF);
 DigitalOut led2(PTC13, OFF);
+Serial pc(USBTX, USBRX); 
 
 // This ticker is used to feed the watch dog
 Ticker tick;
 
 // Threads
-Thread threadT ; // timer thread 
-Thread threadLED1 ; // thread LED1
-Thread threadLED2 ; // thread LED2
+Thread threadT(osPriorityNormal,1000); // timer thread 
+Thread threadLED1(osPriorityNormal,1000); // thread LED1
+Thread threadLED2(osPriorityNormal,1000); // thread LED2
+
+//define the state of watch dog
+enum wState {Working, Stopped} ;
+wState watchdogflag;
+int led1counter1=0;
+int led1counter2=0;
+int led2counter1=0;
+int led2counter2=0;
 
 // ------------Fault Injection Button-------------
 //  Wait while the button is down
 //     Use this to simulate a STUCK fault
 // -----------------------------------------------
 void waitButton() {
-    while (!button) ;  
+    while (!button);
 }
 
+
+
 // ---Thread for controlling LED 1----------------
 //   Turn LED1 on/off in response to signals 
 // -----------------------------------------------
 void led1_thread() {  // method to run in thread
     osEvent evt ;
+    
     while (true) {
+     wdt_kickA();  
         evt = Thread::signal_wait(0x0); // wait for any signal
         if (evt.status == osEventSignal) {
             if (evt.value.signals & 0x01) led1 = ON ;
             if (evt.value.signals & 0x02) led1 = OFF ;
+          
         } 
-        waitButton() ;  // POSSIBLE FAULT HERE
+  
+    
+  //      waitButton() ;  // POSSIBLE FAULT HERE
     }
 }
 
@@ -51,28 +67,38 @@
 // -----------------------------------------------
 void led2_thread() {  // method to run in thread
     osEvent evt ;
+   
+    
     while (true) {
+       
         evt = Thread::signal_wait(0x0); // wait for any signal
+        wdt_kickB();
         if (evt.status == osEventSignal) {
             if (evt.value.signals & 0x01) led2 = ON ;
             if (evt.value.signals & 0x02) led2 = OFF ;
+           
         } 
-        // waitButton() ; // POSSIBLE FAULT HERE
+    
+    //     waitButton() ; // POSSIBLE FAULT HERE
+    
     }
 }
 
+
 // ---Thread for timing --------------------------
 //   Send signals to the other threads
 // -----------------------------------------------
 void timer_thread() {  // method to run in thread
     while (true) {
         Thread::wait(250) ;
-        threadLED1.signal_set(0x1) ;
-        threadLED2.signal_set(0x1) ;
+        threadLED1.signal_set(0x1) ;//on
+        threadLED2.signal_set(0x1) ;//on
+       
         Thread::wait(250) ;
-        threadLED1.signal_set(0x2) ;
-        threadLED2.signal_set(0x2) ;
-        // waitButton() ; // POSSIBLE FAULT HERE
+        threadLED1.signal_set(0x2) ;//off
+        threadLED2.signal_set(0x2) ;//off
+        
+         waitButton() ; // POSSIBLE FAULT HERE
     }
 }
 
@@ -84,17 +110,24 @@
 //       - then must feed it every 32ms  
 // ----------------------------------------------
 
+
 int main(void) {
-    wdt_32ms() ; // initialise watchdog - 32ms timeout
-    tick.attach_us(callback(&wdt_kick_all), 20000); // ticks every 20ms    
+    
+    wdt_1sec() ; // initialise watchdog - 32ms timeout
+    //tick.attach_us(callback(&wdt_kick_all), 20000);
+    
+    
     
     // start threads
     threadT.start(&timer_thread) ; // start the timer thread 
     threadLED1.start(&led1_thread) ; // start the LED1 control thread 
     threadLED2.start(&led2_thread) ; // start the LED2 control thread 
     
-    // show start-up
     led_red = OFF;
     Thread::wait(1000) ;
     led_red = ON;
+    
+ 
+
+    
 }
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