//***************************************************************************** // // minimal setup for HCI code // //***************************************************************************** #include #include #include #include #include "btstack-config.h" #include #include #include "debug.h" #include "btstack_memory.h" #include "hci.h" #include "hci_dump.h" #include "l2cap.h" #include "rfcomm.h" #include "sdp.h" #define RFCOMM_SERVER_CHANNEL 1 #define HEARTBEAT_PERIOD_MS 1000 static uint16_t rfcomm_channel_id; static uint8_t spp_service_buffer[150]; static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ bd_addr_t event_addr; uint8_t rfcomm_channel_nr; uint16_t mtu; switch (packet_type) { case HCI_EVENT_PACKET: switch (packet[0]) { case BTSTACK_EVENT_STATE: // bt stack activated, get started - set local name if (packet[2] == HCI_STATE_WORKING) { hci_send_cmd(&hci_write_local_name, "BTstack SPP Counter"); } break; case HCI_EVENT_COMMAND_COMPLETE: if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)){ bt_flip_addr(event_addr, &packet[6]); printf("BD-ADDR: %s\n\r", bd_addr_to_str(event_addr)); break; } break; case HCI_EVENT_PIN_CODE_REQUEST: // inform about pin code request printf("Pin code request - using '0000'\n\r"); bt_flip_addr(event_addr, &packet[2]); hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); break; case HCI_EVENT_USER_CONFIRMATION_REQUEST: // inform about user confirmation request printf("SSP User Confirmation Request with numeric value '%06u'\n", READ_BT_32(packet, 8)); printf("SSP User Confirmation Auto accept\n"); break; case RFCOMM_EVENT_INCOMING_CONNECTION: // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) bt_flip_addr(event_addr, &packet[2]); rfcomm_channel_nr = packet[8]; rfcomm_channel_id = READ_BT_16(packet, 9); printf("RFCOMM channel %u requested for %s\n\r", rfcomm_channel_nr, bd_addr_to_str(event_addr)); rfcomm_accept_connection_internal(rfcomm_channel_id); break; case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: // data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16) if (packet[2]) { printf("RFCOMM channel open failed, status %u\n\r", packet[2]); } else { rfcomm_channel_id = READ_BT_16(packet, 12); mtu = READ_BT_16(packet, 14); printf("\n\rRFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n\r", rfcomm_channel_id, mtu); } break; case RFCOMM_EVENT_CHANNEL_CLOSED: rfcomm_channel_id = 0; break; default: break; } break; default: break; } } static void heartbeat_handler(struct timer *ts){ if (rfcomm_channel_id){ static int counter = 0; char lineBuffer[30]; sprintf(lineBuffer, "BTstack counter %04u\n\r", ++counter); puts(lineBuffer); int err = rfcomm_send_internal(rfcomm_channel_id, (uint8_t*) lineBuffer, strlen(lineBuffer)); if (err) { log_error("rfcomm_send_internal -> error 0X%02x", err); } } run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); run_loop_add_timer(ts); } void setup(void){ /// GET STARTED with BTstack /// btstack_memory_init(); run_loop_init(RUN_LOOP_POSIX); // use logger: format HCI_DUMP_PACKETLOGGER, HCI_DUMP_BLUEZ or HCI_DUMP_STDOUT hci_dump_open("/tmp/hci_dump.pklg", HCI_DUMP_PACKETLOGGER); // init HCI hci_transport_t * transport = hci_transport_usb_instance(); hci_uart_config_t * config = NULL; bt_control_t * control = NULL; remote_device_db_t * remote_db = (remote_device_db_t *) &remote_device_db_memory; hci_init(transport, config, control, remote_db); hci_discoverable_control(1); l2cap_init(); l2cap_register_packet_handler(packet_handler); rfcomm_init(); rfcomm_register_packet_handler(packet_handler); rfcomm_register_service_internal(NULL, RFCOMM_SERVER_CHANNEL, 100); // reserved channel, mtu=100 // init SDP, create record for SPP and register with SDP sdp_init(); memset(spp_service_buffer, 0, sizeof(spp_service_buffer)); // service_record_item_t * service_record_item = (service_record_item_t *) spp_service_buffer; // sdp_create_spp_service( (uint8_t*) &service_record_item->service_record, RFCOMM_SERVER_CHANNEL, "SPP Counter"); // printf("SDP service buffer size: %u\n\r", (uint16_t) (sizeof(service_record_item_t) + de_get_len((uint8_t*) &service_record_item->service_record))); // sdp_register_service_internal(NULL, service_record_item); sdp_create_spp_service( spp_service_buffer, RFCOMM_SERVER_CHANNEL, "SPP Counter"); printf("SDP service record size: %u\n\r", de_get_len(spp_service_buffer)); sdp_register_service_internal(NULL, spp_service_buffer); hci_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); } // main == setup int main(void) { setup(); // set one-shot timer timer_source_t heartbeat; heartbeat.process = &heartbeat_handler; run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); run_loop_add_timer(&heartbeat); // turn on! hci_power_control(HCI_POWER_ON); // go! run_loop_execute(); // happy compiler! return 0; }