19.2.4 Synchronization and communication functions (semaphores)

The following shows the service calls provided by the RI600PX as the synchronization and communication functions (semaphores).

Table 19-8 Synchronization and Communication Functions (Semaphores)

Service Call	Function	Useful Range
cre_sem	Create semaphore	Task
acre_sem	Create semaphore (automatic ID assignment)	Task
del_sem	Delete semaphore	Task
wai_sem	Acquire semaphore resource (waiting forever)	Task
pol_sem	Acquire semaphore resource (polling)	Task
ipol_sem	Acquire semaphore resource (polling)	Non-task
twai_sem	Acquire semaphore resource (with time-out)	Task
sig_sem	Release semaphore resource	Task
isig_sem	Release semaphore resource	Non-task
ref_sem	Reference semaphore state	Task
iref_sem	Reference semaphore state	Non-task