| (1) Set address = 0xFF |
| (2) Set RF channel = CHANNEL0 |
| (2) while (1) |
| (3) Set counter = 0; |
| (4) Listen to radio channel for 100 ms |
| (5) if RF packet received |
| (6) Calculate system time |
| (7) Set system parameter; |
| (8) while (counter < CMAX) |
| (9) Send APPLY(CNODE) |
| (10) while ( < TTIMEOUT) |
| (11) Listen to radio channel |
| (12) if ACK_APL received |
| (13) break; |
| (14) else if DENY received |
| (15) break; |
| (16) if ( TTIMEOUT) |
| (17) counter++; |
| (18) else if DENY received |
| (19) RF channel = unavailable; |
| (20) break; |
| (21) else if ACK_APL received |
| (22) counter = 0; |
| (23) While (counter < MAX) |
| (24) Synchronize clock; |
| (25) Change address to new address |
| (26) Send JOIN(CNODE) at assigned time slot |
| (27) while ( < TTIMEOUT) |
| (28) Listen to radio channel |
| (29) if ACP_JOIN received |
| (30) break; |
| (31) else if ACK_JOIN received |
| (32) Synchronize clock; |
| (33) Send JOIN(CNODE) at assigned time slot |
| (34) if (network joined) |
| (35) Break; |
| (36) if ( TTIMEOUT) |
| (37) counter++; |
| (38) if (network joined) |
| (39) Update system parameters; |
| (40) break; |
| (41) else if (RF channel is unavailable) |
| (42) If RF channel == MAX_RF_CHANNEL |
| (43) Halt application. |
| (44) else |
| (45) RF channel++; |
| (46) continue; |
| (47) while (1) |
| (48) Sleep; |
| (49) Wake up for RF packet receiving or system event |
| (50) if time == T_ACK_POLL // time for sending ack-synchronization |
| (51) if data needs to be sent |
| (52) Send ACK_POLL_DATA(CNODE); |
| (53) else |
| (54) Send ACK_POLL (CNODE); |
| (55) else if received RF packet |
| (56) Unpack the packet, extract source address NODEA; |
| (57) if packet type == POLL |
| (58) Synchronize clock; |
| (59) TOUT_NODE = 0; //clear timeout counter of the node |
| (60) else if packet type == DATA_REVED |
| (61) Clear sent data information; |
| (62) else if packet type == QueryP2P // voice communication inquiry |
| (63) …; // more voice communication details please browse the appendix. |
| (64) else if packet type == audio data |
| (65) Packet processing; // please browse the appendix. |
| (66) else if KEY pressed |
| (67) Response to KEY press; |
| (68) else if time == T_CHECK_NODE // CNODE status |
| (69) If TOUT_NODE > TOUTMAX |
| (70) reset application; |
| (71) else… |
| (72) …; |
