Diff: main.cpp

Revision:

0:a61d29450691

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 05 07:34:12 2011 +0000
@@ -0,0 +1,86 @@
+ // 2011.05.05 NX
+ // This a test of [Andrew L] mbos
+ // main.c copied from  mbos.h comments
+ // ** A 3d task added **
+ 
+ 
+ //* A typical simple example with two tasks, and one timer, might look like this:
+ //* @code
+ // mbos Blinky demonstration.
+ // Task 1 toggles LED1 every second, under control of a timer. It then posts an event to
+ // task 2 which flashed LED2 briefly.
+  #include "mbed.h"                    
+  #include "mbos.h"
+ 
+  #define TASK1_ID                1       // Id for task 1 (idle task is 0)
+  #define TASK1_PRIO              50      // priority for task 1
+  #define TASK1_STACK_SZ          32      // stack size for task 1 in words 
+  
+  #define TASK2_ID                2       // Id for task 2 
+  #define TASK2_PRIO              60      // priority for task 2
+  #define TASK2_STACK_SZ          32      // stack size for task 2 in words 
+  
+  #define TASK3_ID                3       // Id for task 3 
+  #define TASK3_PRIO              70      // priority for task 3
+  #define TASK3_STACK_SZ          32      // stack size for task 2 in words 
+  
+  #define TIMER0_ID               0       // Id for timer 0
+  #define TIMER0_PERIOD           1000    // Time period in milliseconds
+  #define TIMER0_EVENT            1       // Event flag (1 << 0)
+  
+  #define T1_TO_T2_EVENT          2       // Event flag (1 << 1)
+  #define T2_TO_T3_EVENT          2       // Event flag (1 << 1)
+ 
+  void task1(void);                       // task function prototypes
+  void task2(void);
+  void task3(void);
+
+  DigitalOut led1(LED1);
+  DigitalOut led2(LED2);
+  DigitalOut led3(LED3);
+  mbos os(3, 1);                          // Instantiate mbos with 3 tasks & 1 timer    
+ 
+  int main(void)
+  {
+      // Configure tasks and timers
+      os.CreateTask(TASK1_ID, TASK1_PRIO, TASK1_STACK_SZ, task1);
+      os.CreateTask(TASK2_ID, TASK2_PRIO, TASK2_STACK_SZ, task2);
+      
+      os.CreateTask(TASK3_ID, TASK3_PRIO, TASK3_STACK_SZ, task3);
+      
+      os.CreateTimer(TIMER0_ID, TIMER0_EVENT, TASK1_ID);
+      // Start mbos
+      os.Start();
+      // never  return!
+  }
+ 
+  void task1(void)
+  {
+      os.SetTimer(TIMER0_ID, TIMER0_PERIOD, TIMER0_PERIOD);
+      while(1){
+          os.WaitEvent(TIMER0_EVENT);
+          led1 = !led1;
+          os.SetEvent(T1_TO_T2_EVENT, TASK2_ID);
+      }
+  }
+ 
+  void task2(void)
+  {
+      while(1){
+          os.WaitEvent(T1_TO_T2_EVENT);
+          led2 = 1;
+          wait_ms(100);
+          led2 = 0;
+          os.SetEvent(T2_TO_T3_EVENT, TASK3_ID);
+      }
+  }
+
+  void task3(void)
+  {
+      while(1){
+          os.WaitEvent(T2_TO_T3_EVENT);
+          led3 = 1;
+          wait_ms(100);
+          led3 = 0;
+      }
+  }