pSOSystem System Calls - Read

tm_evevery pSOS+ System Calls
tm_evevery Sends events to the calling task at periodic intervals.
#include
unsigned long tm_evevery(
unsigned long ticks, /* delay */
unsigned long events, /* event list */
unsigned long *tmid /* timer identifier */
)
Description
Arguments
Return Value
This system call is similar to tm_evafter() except that the armed timer expires
periodically instead of once. Events are generated at the specified interval until the
timer is cancelled with tm_cancel().
The tm_evevery() call provides a drift-free mechanism for performing an
operation at periodic intervals. Like tm_evafter(), the interval is specified in
system clock ticks.
ticks Specifies the periodic interval in system clock ticks.
events Specifies the events to deliver upon expiration of the timer
interval. The events are encoded into a long word with bits
31-16 reserved for system use and bits 15 - 0 available for
application use.
tmid Points to the variable where tm_evevery() stores a timer
identifier, which can be used if the armed timer must be
cancelled.
This system call returns 0 on success, or an error code on failure.
1-168 pSOSystem System Calls