Revision 8:a76c9654e215, committed 2014-02-14

Comitter:

avnisha

Date:

Fri Feb 14 20:01:37 2014 +0000

Parent:

7:7138f1922c3a

Commit message:

add features

Changed in this revision

diff -r 7138f1922c3a -r a76c9654e215 main.cpp
--- a/main.cpp	Thu Aug 15 06:49:24 2013 +0000
+++ b/main.cpp	Fri Feb 14 20:01:37 2014 +0000
@@ -1,8 +1,31 @@
 #include "mbed.h"
+#include "cmsis_os.h"
 #include "rtos.h"
  
+Serial pc(USBTX, USBRX);
+ 
+
+/*
+typedef enum  {
+  osPriorityIdle          = -3,          ///< priority: idle (lowest)
+  osPriorityLow           = -2,          ///< priority: low
+  osPriorityBelowNormal   = -1,          ///< priority: below normal
+  osPriorityNormal        =  0,          ///< priority: normal (default)
+  osPriorityAboveNormal   = +1,          ///< priority: above normal
+  osPriorityHigh          = +2,          ///< priority: high 
+  osPriorityRealtime      = +3,          ///< priority: realtime (highest)
+  osPriorityError         =  0x84        ///< system cannot determine priority or thread has illegal priority
+} osPriority;
+*/
+
+
 DigitalOut led1(LED1);
 DigitalOut led2(LED2);
+
+/*
+ * This thread just flips the led2
+ */
+ 
  
 void led2_thread(void const *args) {
     while (true) {
@@ -10,10 +33,37 @@
         Thread::wait(1000);
     }
 }
+
+
+/*
+ * This thread does non blocking read
+ */
+ 
+void nbread_thread(void const *args) {
+    while(1) {
+        if(pc.readable()) {
+            pc.printf("got a character: %c\r\n", pc.getc());
+         }
+         
+         Thread::wait(10);
+    }
+}
+
+/* 
+ * the main thread sets upthread priorities and flips led's
+ */
  
 int main() {
+    
+    osPriority pri;
     Thread thread(led2_thread);
+    Thread thread1(nbread_thread);
     
+    pc.printf("testing thread features \r\n");
+    printf("led2_thread priority: %d\r\n", thread.get_priority());
+    pri = osPriorityHigh;
+    thread.set_priority(pri);
+    printf("led2_thread priority: %d\r\n", thread.get_priority());
     while (true) {
         led1 = !led1;
         Thread::wait(500);