CooCox CoOS User's Guide

task code is as followings:
void taskA (void* pdata)
{
/*!< Create a mutex for uart print */
uart_mutex = CoCreateMutex ();
if (uart_mutex == E_CREATE_FAIL)
{ /*!< If failed to create, print message */
printf (" Failed to create Mutex! \n\r");
}
/*!< Create two flags to communicate between taskA and taskB */
a_flag = CoCreateFlag (TRUE,0);
if (a_flag == E_CREATE_FAIL)
{
printf (" Failed to create the Flag! \n\r");
}
b_flag = CoCreateFlag (TRUE,0);
if (b_flag == E_CREATE_FAIL)
{
printf (" Failed to create the Flag ! \n\r");
}
for (;;)
{
CoWaitForSingleFlag (a_flag,0);
CoEnterMutexSection (uart_mutex);
printf (" taskA is running \n\r");
CoLeaveMutexSection (uart_mutex);
}
}
taskB: taskB waits for b_flag to be set, print 'taskB is running' after activating,,
and then continue to wait for the flag, and the cycle repeats. task code is as
followings:
6