diff options
Diffstat (limited to 'cethcan/light.c')
| -rw-r--r-- | cethcan/light.c | 41 |
1 files changed, 36 insertions, 5 deletions
diff --git a/cethcan/light.c b/cethcan/light.c index 0adf28a..c605e81 100644 --- a/cethcan/light.c +++ b/cethcan/light.c @@ -17,6 +17,11 @@ struct light { struct light **slaves; struct value set, actual; + + struct event *holdoff; + bool holdoff_pending; + bool holdoff_changed; + unsigned holdoff_value; }; static struct light *lights = NULL, **plights = &lights; @@ -30,6 +35,31 @@ struct light *light_find(const char *name) return l; } +static void light_holdoff_event(int sock, short event, void *arg) +{ + struct light *l = arg; + + l->holdoff_pending = false; + if (!l->holdoff_changed) + return; + + struct can_message msg; + msg.daddr = CANA_LIGHT_F(0, l->logical_addr); + msg.dlc = 1; + msg.bytes[0] = l->holdoff_value; + can_broadcast(l->u, &msg); + + l->holdoff_changed = false; + if (!l->holdoff) + l->holdoff = evtimer_new(ev_base, light_holdoff_event, l); + + struct timeval holdoff_time = { + .tv_usec = 40000UL + }; + evtimer_add(l->holdoff, &holdoff_time); + l->holdoff_pending = true; +} + int light_set(struct light *l, unsigned value) { if (l->aggregate) { @@ -39,12 +69,13 @@ int light_set(struct light *l, unsigned value) return ec; } - struct can_message msg; - msg.daddr = CANA_LIGHT_F(0, l->logical_addr); - msg.dlc = 1; - msg.bytes[0] = value; - can_broadcast(l->u, &msg); + l->holdoff_changed = true; + l->holdoff_value = value; + + if (l->holdoff_pending) + return 0; + light_holdoff_event(0,0,l); return 0; } |