--- a/runtime/plc_Linux_main.c Fri Jun 27 09:38:16 2008 +0200
+++ b/runtime/plc_Linux_main.c Fri Jun 27 16:21:22 2008 +0200
@@ -2,14 +2,46 @@
#include <string.h>
#include <time.h>
#include <signal.h>
+#include <stdlib.h>
+void PLC_GetTime(IEC_TIME *CURRENT_TIME)
+{
+ clock_gettime(CLOCK_REALTIME, CURRENT_TIME);
+}
void PLC_timer_notify(sigval_t val)
{
- clock_gettime(CLOCK_REALTIME, &__CURRENT_TIME);
+ PLC_GetTime(&__CURRENT_TIME);
__run();
}
+timer_t PLC_timer;
+
+void PLC_SetTimer(long long next, long long period)
+{
+ struct itimerspec timerValues;
+ /*
+ printf("SetTimer(%lld,%lld)\n",next, period);
+ */
+ memset (&timerValues, 0, sizeof (struct itimerspec));
+ {
+#ifdef __lldiv_t_defined
+ lldiv_t nxt_div = lldiv(next, 1000000000);
+ lldiv_t period_div = lldiv(period, 1000000000);
+ timerValues.it_value.tv_sec = nxt_div.quot;
+ timerValues.it_value.tv_nsec = nxt_div.rem;
+ timerValues.it_interval.tv_sec = period_div.quot;
+ timerValues.it_interval.tv_nsec = period_div.rem;
+#else
+ timerValues.it_value.tv_sec = next / 1000000000;
+ timerValues.it_value.tv_nsec = next % 1000000000;
+ timerValues.it_interval.tv_sec = period / 1000000000;
+ timerValues.it_interval.tv_nsec = period % 1000000000;
+#endif
+ }
+ timer_settime (PLC_timer, 0, &timerValues, NULL);
+}
+
void catch_signal(int sig)
{
signal(SIGTERM, catch_signal);
@@ -19,36 +51,30 @@
int main(int argc,char **argv)
{
- timer_t timer;
struct sigevent sigev;
- long tv_nsec = 1000000 * (maxval(common_ticktime__,1)%1000);
- time_t tv_sec = common_ticktime__/1000;
- struct itimerspec timerValues;
+ /* Translate PLC's microseconds to Ttick nanoseconds */
+ Ttick = 1000000 * maxval(common_ticktime__,1);
memset (&sigev, 0, sizeof (struct sigevent));
- memset (&timerValues, 0, sizeof (struct itimerspec));
sigev.sigev_value.sival_int = 0;
sigev.sigev_notify = SIGEV_THREAD;
sigev.sigev_notify_attributes = NULL;
sigev.sigev_notify_function = PLC_timer_notify;
- timerValues.it_value.tv_sec = tv_sec;
- timerValues.it_value.tv_nsec = tv_nsec;
- timerValues.it_interval.tv_sec = tv_sec;
- timerValues.it_interval.tv_nsec = tv_nsec;
+ timer_create (CLOCK_REALTIME, &sigev, &PLC_timer);
if( __init(argc,argv) == 0 ){
- timer_create (CLOCK_REALTIME, &sigev, &timer);
- timer_settime (timer, 0, &timerValues, NULL);
+ PLC_SetTimer(Ttick,Ttick);
/* install signal handler for manual break */
signal(SIGTERM, catch_signal);
signal(SIGINT, catch_signal);
-
+ /* Wait some signal */
pause();
-
- timer_delete (timer);
+ /* Stop the PLC */
+ PLC_SetTimer(0,0);
}
__cleanup();
+ timer_delete (PLC_timer);
return 0;
}