harsha abeykoon
if line number 55 is omitted the program runs. But why?
Revision 0:e1853421807f, committed 2012-01-11
- Comitter:
- harsha
- Date:
- Wed Jan 11 05:12:37 2012 +0000
- Commit message:
- mbos with fprintf
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jan 11 05:12:37 2012 +0000
@@ -0,0 +1,61 @@
+ // 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 95 // priority for task 1
+ #define TASK1_STACK_SZ 64 // stack size for task 1 in words
+ #define TASK2_ID 2 // Id for task 2
+ #define TASK2_PRIO 65 // priority for task 2
+ #define TASK2_STACK_SZ 64 // 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)
+
+LocalFileSystem local("local");
+ FILE *fp ;
+ void task1(void); // task function prototypes
+ void task2(void);
+
+ DigitalOut led1(LED1);
+ DigitalOut led2(LED2);
+ mbos os(2, 1); // Instantiate mbos with 2 tasks & 1 timer
+ int i=0;
+ int main(void)
+ {
+ FILE *fp = fopen("/local/out.txt", "w");
+ // 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.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(i<15){
+ os.WaitEvent(TIMER0_EVENT);
+ led1 = !led1;
+ i++;
+
+ }
+ }
+
+ void task2(void)
+ {
+ while(i<15){
+
+ led2 = !led2;
+ fprintf(fp, "Hello World!");
+
+ wait_ms(100);
+
+ }
+ fclose(fp);
+ }
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Jan 11 05:12:37 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/078e4b97a13e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbos.lib Wed Jan 11 05:12:37 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/AndrewL/code/mbos/#cf660b28b2a4