/*---------------------------------------------------------------------------*/
static void
init(void)
{
radio_is_on = 0;
PT_INIT(&pt);
#if NURTIMER
rtimer_setup(&rt, RTIMER_HARD,
(void (*)(struct rtimer *, void *, int status))powercycle,
NULL);
rtimer_schedule(&rt, CYCLE_TIME, 1);
#else
rtimer_set(&rt, RTIMER_NOW() + CYCLE_TIME, 1,
(void (*)(struct rtimer *, void *))powercycle, NULL);
#endif
contikimac_is_on = 1;
#if WITH_PHASE_OPTIMIZATION
phase_init(&phase_list);
#endif /* WITH_PHASE_OPTIMIZATION */
#if CONTIKIMAC_CONF_ANNOUNCEMENTS
announcement_register_listen_callback(listen_callback);
ctimer_set(&announcement_cycle_ctimer, ANNOUNCEMENT_TIME,
cycle_announcement, NULL);
#endif /* CONTIKIMAC_CONF_ANNOUNCEMENTS */
}
/*---------------------------------------------------------------------------*/
static int
turn_on(void)
{
if(contikimac_is_on == 0) {
contikimac_is_on = 1;
#if NURTIMER
rtimer_schedule(&rt, CYCLE_TIME, 1);
#else
rtimer_set(&rt, RTIMER_NOW() + CYCLE_TIME, 1,
(void (*)(struct rtimer *, void *))powercycle, NULL);
#endif
}
return 1;
}
/*---------------------------------------------------------------------------*/
static inline void
schedule_timeout(void)
{
/* number of slots after which the timeout will expire: */
/* random number between SLOT_TIMEOUT_MIN and SLOT_TIMEOUT_MAX */
uint8_t slot_timeout = SLOT_TIMEOUT_MIN +
(random_rand() % (SLOT_TIMEOUT_MAX - SLOT_TIMEOUT_MIN + 1));
if(WITH_RELAY_CNT()) {
/* if the relay counter is sent, increment it by the chosen number of
* slots */
g.relay_cnt_timeout = g.header.relay_cnt + slot_timeout;
}
rtimer_schedule(GLOSSY_CONF_RTIMER_ID,
g.t_timeout + slot_timeout * g.T_slot_estimated,
0,
timeout_expired);
}
/*---------------------------------------------------------------------------*/
static inline char
timeout_expired(rtimer_t *rt)
{
if(!rf1a_is_busy()) {
/* we are not receiving anything: retransmit the packet */
rf1a_start_tx();
g.header.relay_cnt = g.relay_cnt_timeout;
rf1a_write_to_tx_fifo((uint8_t *)&g.header,
GLOSSY_HEADER_LEN(g.header.pkt_type),
(uint8_t *)g.payload, g.payload_len);
g.t_timeout = rt->time;
} else {
/* we are receiving a packet: postpone the timeout by one slot */
g.relay_cnt_timeout++;
rtimer_schedule(GLOSSY_CONF_RTIMER_ID, rt->time + g.T_slot_estimated, 0,
timeout_expired);
}
return 0;
}
