static void handle_gatt_client_event(le_event_t * event) { uint8_t * packet = (uint8_t*) event; int connection_encrypted; // handle connect / disconncet events first switch (packet[0]) { case HCI_EVENT_LE_META: switch (packet[2]) { case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: gc_handle = READ_BT_16(packet, 4); printf("Connection handle 0x%04x, request encryption\n", gc_handle); // we need to be paired to enable notifications tc_state = TC_W4_ENCRYPTED_CONNECTION; sm_send_security_request(gc_handle); break; default: break; } return; case HCI_EVENT_ENCRYPTION_CHANGE: if (gc_handle != READ_BT_16(packet, 3)) return; connection_encrypted = packet[5]; log_info("Encryption state change: %u", connection_encrypted); if (!connection_encrypted) return; if (tc_state != TC_W4_ENCRYPTED_CONNECTION) return; // let's start printf("\nANCS Client - CONNECTED, discover ANCS service\n"); tc_state = TC_W4_SERVICE_RESULT; gatt_client_discover_primary_services_by_uuid128(gc_id, gc_handle, ancs_service_uuid); return; case HCI_EVENT_DISCONNECTION_COMPLETE: notify_client(ANCS_CLIENT_DISCONNECTED); return; default: break; } le_characteristic_t characteristic; le_characteristic_value_event_t * value_event; switch(tc_state) { case TC_W4_SERVICE_RESULT: switch(event->type) { case GATT_SERVICE_QUERY_RESULT: ancs_service = ((le_service_event_t *) event)->service; ancs_service_found = 1; break; case GATT_QUERY_COMPLETE: if (!ancs_service_found) { printf("ANCS Service not found"); tc_state = TC_IDLE; break; } tc_state = TC_W4_CHARACTERISTIC_RESULT; printf("ANCS Client - Discover characteristics for ANCS SERVICE \n"); gatt_client_discover_characteristics_for_service(gc_id, gc_handle, &ancs_service); break; default: break; } break; case TC_W4_CHARACTERISTIC_RESULT: switch(event->type) { case GATT_CHARACTERISTIC_QUERY_RESULT: characteristic = ((le_characteristic_event_t *) event)->characteristic; if (memcmp(characteristic.uuid128, ancs_notification_source_uuid, 16) == 0) { printf("ANCS Notification Source Characterisic found\n"); ancs_notification_source_characteristic = characteristic; ancs_characteristcs++; break; } if (memcmp(characteristic.uuid128, ancs_control_point_uuid, 16) == 0) { printf("ANCS Control Point found\n"); ancs_control_point_characteristic = characteristic; ancs_characteristcs++; break; } if (memcmp(characteristic.uuid128, ancs_data_source_uuid, 16) == 0) { printf("ANCS Data Source Characterisic found\n"); ancs_data_source_characteristic = characteristic; ancs_characteristcs++; break; } break; case GATT_QUERY_COMPLETE: printf("ANCS Characteristcs count %u\n", ancs_characteristcs); tc_state = TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED; gatt_client_write_client_characteristic_configuration(gc_id, gc_handle, &ancs_notification_source_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION); break; default: break; } break; case TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED: switch(event->type) { case GATT_QUERY_COMPLETE: printf("ANCS Notification Source subscribed\n"); tc_state = TC_W4_DATA_SOURCE_SUBSCRIBED; gatt_client_write_client_characteristic_configuration(gc_id, gc_handle, &ancs_data_source_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION); break; default: break; } break; case TC_W4_DATA_SOURCE_SUBSCRIBED: switch(event->type) { case GATT_QUERY_COMPLETE: printf("ANCS Data Source subscribed\n"); tc_state = TC_SUBSCRIBED; notify_client(ANCS_CLIENT_CONNECTED); break; default: break; } break; case TC_SUBSCRIBED: if ( event->type != GATT_NOTIFICATION && event->type != GATT_INDICATION ) break; value_event = (le_characteristic_value_event_t *) event; if (value_event->value_handle == ancs_data_source_characteristic.value_handle) { int i; for (i=0; i<value_event->blob_length; i++) { ancs_chunk_parser_handle_byte(value_event->blob[i]); } } else if (value_event->value_handle == ancs_notification_source_characteristic.value_handle) { ancs_notification_uid = READ_BT_32(value_event->blob, 4); printf("Notification received: EventID %02x, EventFlags %02x, CategoryID %02x, CategoryCount %u, UID %04x\n", value_event->blob[0], value_event->blob[1], value_event->blob[2], value_event->blob[3], (int) ancs_notification_uid); static uint8_t get_notification_attributes[] = {0, 0,0,0,0, 0, 1,32,0, 2,32,0, 3,32,0, 4, 5}; bt_store_32(get_notification_attributes, 1, ancs_notification_uid); ancs_notification_uid = 0; ancs_chunk_parser_init(); gatt_client_write_value_of_characteristic(gc_id, gc_handle, ancs_control_point_characteristic.value_handle, sizeof(get_notification_attributes), get_notification_attributes); } else { printf("Unknown Source: "); printf_hexdump(value_event->blob , value_event->blob_length); } break; default: break; } // app_run(); }
static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ UNUSED(packet_type); UNUSED(channel); UNUSED(size); int connection_encrypted; // handle connect / disconncet events first switch (hci_event_packet_get_type(packet)) { case HCI_EVENT_LE_META: switch (packet[2]) { case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: gc_handle = little_endian_read_16(packet, 4); log_info("Connection handle 0x%04x, request encryption", gc_handle); // we need to be paired to enable notifications tc_state = TC_W4_ENCRYPTED_CONNECTION; sm_send_security_request(gc_handle); break; default: break; } return; case HCI_EVENT_ENCRYPTION_CHANGE: if (gc_handle != little_endian_read_16(packet, 3)) return; connection_encrypted = packet[5]; log_info("Encryption state change: %u", connection_encrypted); if (!connection_encrypted) return; if (tc_state != TC_W4_ENCRYPTED_CONNECTION) return; // let's start log_info("\nANCS Client - CONNECTED, discover ANCS service"); tc_state = TC_W4_SERVICE_RESULT; gatt_client_discover_primary_services_by_uuid128(handle_hci_event, gc_handle, ancs_service_uuid); return; case HCI_EVENT_DISCONNECTION_COMPLETE: if (hci_event_disconnection_complete_get_connection_handle(packet) != gc_handle) break; if (tc_state == TC_SUBSCRIBED){ notify_client_simple(ANCS_SUBEVENT_CLIENT_DISCONNECTED); } tc_state = TC_IDLE; gc_handle = 0; return; default: break; } gatt_client_characteristic_t characteristic; uint8_t * value; uint16_t value_handle; uint16_t value_length; switch(tc_state){ case TC_W4_SERVICE_RESULT: switch(hci_event_packet_get_type(packet)){ case GATT_EVENT_SERVICE_QUERY_RESULT: gatt_event_service_query_result_get_service(packet, &ancs_service); ancs_service_found = 1; break; case GATT_EVENT_QUERY_COMPLETE: if (!ancs_service_found){ log_info("ANCS Service not found"); tc_state = TC_IDLE; break; } tc_state = TC_W4_CHARACTERISTIC_RESULT; log_info("ANCS Client - Discover characteristics for ANCS SERVICE "); gatt_client_discover_characteristics_for_service(handle_hci_event, gc_handle, &ancs_service); break; default: break; } break; case TC_W4_CHARACTERISTIC_RESULT: switch(hci_event_packet_get_type(packet)){ case GATT_EVENT_CHARACTERISTIC_QUERY_RESULT: gatt_event_characteristic_query_result_get_characteristic(packet, &characteristic); if (memcmp(characteristic.uuid128, ancs_notification_source_uuid, 16) == 0){ log_info("ANCS Notification Source found, attribute handle %u", characteristic.value_handle); ancs_notification_source_characteristic = characteristic; ancs_characteristcs++; break; } if (memcmp(characteristic.uuid128, ancs_control_point_uuid, 16) == 0){ log_info("ANCS Control Point found, attribute handle %u", characteristic.value_handle); ancs_control_point_characteristic = characteristic; ancs_characteristcs++; break; } if (memcmp(characteristic.uuid128, ancs_data_source_uuid, 16) == 0){ log_info("ANCS Data Source found, attribute handle %u", characteristic.value_handle); ancs_data_source_characteristic = characteristic; ancs_characteristcs++; break; } break; case GATT_EVENT_QUERY_COMPLETE: log_info("ANCS Characteristcs count %u", ancs_characteristcs); tc_state = TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED; gatt_client_listen_for_characteristic_value_updates(&ancs_notification_source_notification, &handle_hci_event, gc_handle, &ancs_notification_source_characteristic); gatt_client_write_client_characteristic_configuration(handle_hci_event, gc_handle, &ancs_notification_source_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION); break; default: break; } break; case TC_W4_NOTIFICATION_SOURCE_SUBSCRIBED: switch(hci_event_packet_get_type(packet)){ case GATT_EVENT_QUERY_COMPLETE: log_info("ANCS Notification Source subscribed"); tc_state = TC_W4_DATA_SOURCE_SUBSCRIBED; gatt_client_listen_for_characteristic_value_updates(&ancs_data_source_notification, &handle_hci_event, gc_handle, &ancs_data_source_characteristic); gatt_client_write_client_characteristic_configuration(handle_hci_event, gc_handle, &ancs_data_source_characteristic, GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION); break; default: break; } break; case TC_W4_DATA_SOURCE_SUBSCRIBED: switch(hci_event_packet_get_type(packet)){ case GATT_EVENT_QUERY_COMPLETE: log_info("ANCS Data Source subscribed"); tc_state = TC_SUBSCRIBED; notify_client_simple(ANCS_SUBEVENT_CLIENT_CONNECTED); break; default: break; } break; case TC_SUBSCRIBED: if (hci_event_packet_get_type(packet) != GATT_EVENT_NOTIFICATION && hci_event_packet_get_type(packet) != GATT_EVENT_INDICATION ) break; value_handle = little_endian_read_16(packet, 4); value_length = little_endian_read_16(packet, 6); value = &packet[8]; log_info("ANCS Notification, value handle %u", value_handle); if (value_handle == ancs_data_source_characteristic.value_handle){ int i; for (i=0;i<value_length;i++) { ancs_chunk_parser_handle_byte(value[i]); } } else if (value_handle == ancs_notification_source_characteristic.value_handle){ ancs_notification_uid = little_endian_read_32(value, 4); log_info("Notification received: EventID %02x, EventFlags %02x, CategoryID %02x, CategoryCount %u, UID %04x", value[0], value[1], value[2], value[3], (int) ancs_notification_uid); static uint8_t get_notification_attributes[] = {0, 0,0,0,0, 0, 1,32,0, 2,32,0, 3,32,0, 4, 5}; little_endian_store_32(get_notification_attributes, 1, ancs_notification_uid); ancs_notification_uid = 0; ancs_chunk_parser_init(); gatt_client_write_value_of_characteristic(handle_hci_event, gc_handle, ancs_control_point_characteristic.value_handle, sizeof(get_notification_attributes), get_notification_attributes); } else { log_info("Unknown Source: "); log_info_hexdump(value , value_length); } break; default: break; } // app_run(); }