/*---------------------------------------------------------------------------*/
static int
select_packet(uint16_t *slotframe, uint16_t *timeslot)
{
/* Select EBs only */
if(packetbuf_attr(PACKETBUF_ATTR_FRAME_TYPE) == FRAME802154_BEACONFRAME) {
if(slotframe != NULL) {
*slotframe = slotframe_handle;
}
if(timeslot != NULL) {
*timeslot = get_node_timeslot(&linkaddr_node_addr);
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static int
select_packet(uint16_t *slotframe, uint16_t *timeslot)
{
/* Select data packets we have a unicast link to */
const linkaddr_t *dest = packetbuf_addr(PACKETBUF_ADDR_RECEIVER);
if(packetbuf_attr(PACKETBUF_ATTR_FRAME_TYPE) == FRAME802154_DATAFRAME
&& !linkaddr_cmp(dest, &linkaddr_null)) {
if(slotframe != NULL) {
*slotframe = slotframe_handle;
}
if(timeslot != NULL) {
*timeslot = get_node_timeslot(dest);
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
init(uint16_t sf_handle)
{
int i;
uint16_t rx_timeslot;
slotframe_handle = sf_handle;
channel_offset = sf_handle;
/* Slotframe for unicast transmissions */
sf_unicast = tsch_schedule_add_slotframe(slotframe_handle, ORCHESTRA_UNICAST_PERIOD);
rx_timeslot = get_node_timeslot(&linkaddr_node_addr);
/* Add a Tx link at each available timeslot. Make the link Rx at our own timeslot. */
for(i = 0; i < ORCHESTRA_UNICAST_PERIOD; i++) {
tsch_schedule_add_link(sf_unicast,
LINK_OPTION_SHARED | LINK_OPTION_TX | ( i == rx_timeslot ? LINK_OPTION_RX : 0 ),
LINK_TYPE_NORMAL, &tsch_broadcast_address,
i, channel_offset);
}
}
if(packetbuf_attr(PACKETBUF_ATTR_FRAME_TYPE) == FRAME802154_BEACONFRAME) {
if(slotframe != NULL) {
*slotframe = slotframe_handle;
}
if(timeslot != NULL) {
*timeslot = get_node_timeslot(&linkaddr_node_addr);
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
new_time_source(const struct tsch_neighbor *old, const struct tsch_neighbor *new)
{
uint16_t old_ts = get_node_timeslot(&old->addr);
uint16_t new_ts = get_node_timeslot(&new->addr);
if(new_ts == old_ts) {
return;
}
if(old_ts != 0xffff) {
/* Stop listening to the old time source's EBs */
tsch_schedule_remove_link_by_timeslot(sf_eb, old_ts);
}
if(new_ts != 0xffff) {
/* Listen to the time source's EBs */
tsch_schedule_add_link(sf_eb,
LINK_OPTION_RX,
LINK_TYPE_ADVERTISING_ONLY, NULL,
if(packetbuf_attr(PACKETBUF_ATTR_FRAME_TYPE) == FRAME802154_BEACONFRAME) {
if(slotframe != NULL) {
*slotframe = slotframe_handle;
}
if(timeslot != NULL) {
*timeslot = get_node_timeslot(&linkaddr_node_addr);
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
new_time_source(const struct tsch_neighbor *old, const struct tsch_neighbor *new)
{
uint16_t old_ts = old != NULL ? get_node_timeslot(&old->addr) : 0xffff;
uint16_t new_ts = new != NULL ? get_node_timeslot(&new->addr) : 0xffff;
if(new_ts == old_ts) {
return;
}
if(old_ts != 0xffff) {
/* Stop listening to the old time source's EBs */
if(old_ts == get_node_timeslot(&linkaddr_node_addr)) {
/* This was the same timeslot as slot. Reset original link options */
tsch_schedule_add_link(sf_eb, LINK_OPTION_TX, LINK_TYPE_ADVERTISING_ONLY,
&tsch_broadcast_address, old_ts, 0);
} else {
/* Remove slot */
tsch_schedule_remove_link_by_timeslot(sf_eb, old_ts);
