| Subject: |
|
Re: Initial Transition QP-Nano |
| Name: |
|
Miro Samek |
| Date Posted: |
|
Jul 14, 08 - 10:13 AM |
| Email: |
|
miro@quantum-leaps.com |
| Website: |
|
http://www.quantum-leaps.com |
| Message: |
|
I was thinking about the problem with posting events from top-most initial transitions in QP-nano. Actually, it is very easily to change QP-nano code to initialize all active object priorities before taking the top-most initial transitions. This way, posting events to any active object in the system from any top-most initial transitions will be allowed. I plan to make this change in the next QP-nano release 4.0.02.
For now, you can modify your QF_run() function in qfn.c as follows:
void QF_run(void) {
. . .
/* set priorities all registered active objects... */
for (p = (uint8_t)1; p <= (uint8_t)QF_MAX_ACTIVE; ++p) {
a = (QActive *)Q_ROM_PTR(QF_active[p].act);
Q_ASSERT(a != (QActive *)0);/* QF_active[p] must be initialized */
a->prio = p; /* set the priority of the active object */
}
/* trigger initial transitions in all registered active objects... */
for (p = (uint8_t)1; p <= (uint8_t)QF_MAX_ACTIVE; ++p) {
a = (QActive *)Q_ROM_PTR(QF_active[p].act);
#ifndef QF_FSM_ACTIVE
QHsm_init((QHsm *)a); /* take the initial transition in HSM */
#else
QFsm_init((QFsm *)a); /* take the initial transition in FSM */
#endif
}
. . .
}
For consistency, you should also modify QF_run() in qkn.c as follows:
void QF_run(void) {
. . .
/* set priorities all registered active objects... */
for (p = (uint8_t)1; p <= (uint8_t)QF_MAX_ACTIVE; ++p) {
l_act = (QActive *)Q_ROM_PTR(QF_active[p].act);
Q_ASSERT(l_act != (QActive *)0); /* l_act must be initialized */
l_act->prio = p; /* set the priority of the active object */
}
/* trigger initial transitions in all registered active objects... */
for (p = (uint8_t)1; p <= (uint8_t)QF_MAX_ACTIVE; ++p) {
l_act = (QActive *)Q_ROM_PTR(QF_active[p].act);
#ifndef QF_FSM_ACTIVE
QHsm_init((QHsm *)a); /* take the initial transition in HSM */
#else
QFsm_init((QFsm *)a); /* take the initial transition in FSM */
#endif
}
. . .
}
The changes will give you some more flexibility in QP-nano, where you don’t control the order of active object initialization. In the full-version QP, you control the order of active object initialization, so you can sequence it such that posting events from top-most initial transition to some active objects is possible.
Miro |
|
Replies:
|
|
|
|
|
Reply
Forum
bravenet.com