void Manager::handle_pair_request(const RXPacket& packet)
{
const TxType tx_type = packet.get_tx_type();
const id_t id = packet.get_id();
log(DEBUG, PSTR("Pair req from %lu"), id);
if (tx_type==TX && cc_txs.find(id)) {
// ignore pair request from CC_TX we're already paired with
} else if (tx_type==TRX && cc_trxs.find(id)) {
// pair request from CC_TRX we previously attempted to pair with
// this means our ACK response failed so try again
pair_with = id;
pair(packet);
} else if (auto_pair) {
// Auto pair mode. Go ahead and pair.
pair_with = id;
pair(packet);
} else if (pair_with == id) {
// Manual pair mode and pair_with has already been set so pair.
pair(packet);
} else {
// Manual pair mode. Tell user about pair request.
Serial.print(F("{\"pr\": "));
packet.print_id_and_type(true);
Serial.println(F("}"));
}
}
void Manager::pair(const RXPacket& packet)
{
bool success = false;
switch (packet.get_tx_type()) {
case TX:
success = cc_txs.append(pair_with);
break;
case TRX: // transceiver. So we need to ACK.
rfm.ack_cc_trx(pair_with);
success = cc_trxs.append(pair_with);
// Note that this may be a re-try to ACK a TRX we
// previously added if our first ACK failed.
break;
}
if (success) {
Serial.print(F("{\"pw\": "));
packet.print_id_and_type(true);
Serial.println(F(" }"));
}
pair_with = ID_INVALID; // reset
}
