Nordic Serial Firmware

RAW 정보

Hearbeat packet 수신과정

heartbeat_init()에서 heartbeat callback 함수인 heartbeat_opcode_handle()을 transport_control_packet_handler_t(TRANSPORT_CONTROL_PACKET_CONSUMER_ADD, heartbeat_opcode_handle)를 transport_control_packet_consumer_add()를 통해 m_control_packet_consumers에 등록.

거기서 control_packet_callback_get을 통해서 해당 callback을 리턴받음.

위 함수는 transport_control_packet_in()에서 호출되며, 해당 callback 함수를 실행시킴. 여기서 heartbeat_opcode_handle()이 실행 되는 것임. 위 함수는 upper_transport_packet_in()에서 호출되며, control packet일 경우 수행하는 분기인 것으로 확인됨.

여기서 heartbeat subscription에 의해 데이터 가공 및 폐기를 수행. evt 파라미터 생성 후, event_handle() 호출

event_handle()은 주기적인 event handler임. event list에 등록되어있는 event들을 주기적으로 핸들링.

해당 이벤트는 serial example의 main() -> initialize() -> mesh_init() -> nrf_mesh_serial_init() -> serial_handler_mesh_init()에서 추가. 해당 이벤트 핸들러는 serial_handler_mesh_evt_handle(). NRF_MESH_EVT_MESSAGE_RECEIVED NRF_MESH_EVT_IV_UPDATE_NOTIFICATION NRF_MESH_EVT_KEY_REFRESH_NOTIFICATION NRF_MESH_EVT_HB_MESSAGE_RECEIVED NRF_MESH_EVT_TX_COMPLETE 메시지를 핸들링함. 데이터를 가공해서 tx_serial()로 PC 인터페이스에 전송

 64 typedef struct __attribute((packed))
 65 {
 66     uint8_t length; /**< Length of the packet in bytes. */
 67     uint8_t opcode; /**< Opcode of the packet. */
 68
 69     /** Union of the various payload structures for all serial packets. */
 70     union __attribute((packed))
 71     {
 72         serial_cmd_t cmd; /**< Command packet parameters. */
 73         serial_evt_t evt; /**< Event packet parameters. */
 74     } payload;
 75 } serial_packet_t;

Serial App 동작

mesh_init() -> nrf_mesh_serial_init() -> serial_handler_app_cb_set() -> m_app_rx_cb에 app handler를 등록함으로써 serial command가 동작해야하는데, app handler가 null로 들어감 이 핸들러는 serial_handler_app_rx()에서 호출되어야 하는데, 정상적인 동작의 경우, m_app_rx_cb() 동작 후 SERIAL_STATUS_SUCCESS를 반환 그렇지 않은 경우(handler가 없는 경우), SERIAL_STATUS_REJECTED 반환

Serial Model 동작

end_reception() -> serial_process() -> serial_process_cmd() -> serial_handler_<category>_rx() -> serial_handler_common_rx() -> model_command()

const serial_cmd_model_specific_command_t * p_cmd_params = &p_cmd->payload.cmd.access.model_cmd;
access_model_id_t model_id;
uint32_t status = access_model_id_get(p_cmd_params->model_cmd_info.model_handle, &model_id);

serial_handler_models_info_t * p_targeted_model = registered_model_get(&model_id);

Serial RX log

00> <t:     337238>, serial.c,  129, Serial process cmd: 0x: 07FE00008141512320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2C778D04D0D80C4C831A87C1BE03847D1685C0F39D2B3B2E7D1B843DDBA655619B4FEC0B4FD7E334EB743641EA666176794594B93B6448A86286EE793C267626DFA
00> <t:     337246>, serial_handler_models.c,  161, Serial RX Payload: 0x: 07FE00008141512320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2C778D04D0D80C4C831A87C1BE03847D1685C0F39D2B3B2E7D1B843DDBA655619B4FEC0B4FD7E334EB743641EA666176794594B93B6448A86286EE793C267626DFA

00> <t:     424612>, serial.c,  129, Serial process cmd: 0x: 06FE00000080382320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2C778D04D0D80C4C831A87C1BE03847D1685C0F39D2B3B2E7D1B843DDBA655619B4FEC0B4FD7E334EB743641EA666176794594B93B6448A86286EE793C267626DFA
00> <t:     424620>, serial_handler_models.c,  161, Serial RX Payload: 0x: 06FE00000080382320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2C778D04D0D80C4C831A87C1BE03847D1685C0F39D2B3B2E7D1B843DDBA655619B4FEC0B4FD7E334EB743641EA666176794594B93B6448A86286EE793C267626DFA

00> <t:    1014495>, serial.c,  129, Serial process cmd: 0x: 05FE00008038382320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2C778D04D0D80C4C831A87C1BE03847D1685C0F39D2B3B2E7D1B843DDBA655619B4FEC0B4FD7E334EB743641EA666176794594B93B6448A86286EE793C267626DFA
00> <t:    1014503>, serial_handler_models.c,  161, Serial RX Payload: 0x: 05FE00008038382320FA032018282A6C00FA032010FB0320C0B20400B0FA032069600400A67C6F6310FB032098CA0BA49F9F222EFB86171627002CA4559BE2

• 07FE000081415123
• 06FE0000008038
• 05FE00008038
• 구조
  • packet size length: 1 byte
  • model opcode length: 1 byte
  • model handle length: 2 bytes
  • data size: $packet\,size - 3\,bytes$