/* * Copyright (C) 2014 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ #define BTSTACK_FILE__ "nordic_spp_le_counter.c" // ***************************************************************************** /* EXAMPLE_START(nordic_ssp_le_counter): LE Nordic SPP-like Heartbeat Server * */ // ***************************************************************************** #include #include #include #include #include "btstack.h" #include "ble/gatt-service/nordic_spp_service_server.h" // nordic_spp_le_counter.gatt contains the declaration of the provided GATT Services + Characteristics // nordic_spp_le_counter.h contains the binary representation of nordic_spp_le_counter.gatt // it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py nordic_spp_le_counter.gatt nordic_spp_le_counter.h // it needs to be regenerated when the GATT Database declared in nordic_spp_le_counter.gatt file is modified #include "nordic_spp_le_counter.h" #define HEARTBEAT_PERIOD_MS 1000 /* @section Main Application Setup * * @text Listing MainConfiguration shows main application code. * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled * ATT Database generated from $nordic_ssp_le_counter.gatt$. * Additionally, it enables the Battery Service Server with the current battery level. * Finally, it configures the advertisements * and the heartbeat handler and boots the Bluetooth stack. * In this example, the Advertisement contains the Flags attribute and the device name. * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. */ /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ static btstack_timer_source_t heartbeat; static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID; static btstack_context_callback_registration_t send_request; const uint8_t adv_data[] = { // Flags general discoverable, BR/EDR not supported 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06, // Name 8, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, 'n', 'R', 'F',' ', 'S', 'P', 'P', // UUID ... 17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x9e, 0xca, 0xdc, 0x24, 0xe, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x1, 0x0, 0x40, 0x6e, }; const uint8_t adv_data_len = sizeof(adv_data); /* LISTING_END */ /* * @section Heartbeat Handler * * @text The heartbeat handler updates the value of the single Characteristic provided in this example, * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat. */ /* LISTING_START(heartbeat): Hearbeat Handler */ static int counter = 0; static char counter_string[30]; static int counter_string_len; static void beat(void){ counter++; counter_string_len = snprintf(counter_string, sizeof(counter_string), "BTstack counter %03u", counter); } static void nordic_can_send(void * context){ UNUSED(context); printf("SEND: %s\n", counter_string); nordic_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len); } static void heartbeat_handler(struct btstack_timer_source *ts){ if (con_handle != HCI_CON_HANDLE_INVALID) { beat(); send_request.callback = &nordic_can_send; nordic_spp_service_server_request_can_send_now(&send_request, con_handle); } btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); btstack_run_loop_add_timer(ts); } /* LISTING_END */ static void nordic_spp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ UNUSED(channel); switch (packet_type){ case HCI_EVENT_PACKET: if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META) break; switch (hci_event_gattservice_meta_get_subevent_code(packet)){ case GATTSERVICE_SUBEVENT_SPP_SERVICE_CONNECTED: con_handle = gattservice_subevent_spp_service_connected_get_con_handle(packet); printf("Nordic SPP connected, con handle 0x%04x\n", con_handle); break; case GATTSERVICE_SUBEVENT_SPP_SERVICE_DISCONNECTED: printf("Nordic SPP disconnected, con handle 0x%04x\n", con_handle); con_handle = HCI_CON_HANDLE_INVALID; break; default: break; } break; case RFCOMM_DATA_PACKET: printf("RECV: "); printf_hexdump(packet, size); break; default: break; } } int btstack_main(void); int btstack_main(void) { l2cap_init(); // setup SM: Display only sm_init(); // setup ATT server att_server_init(profile_data, NULL, NULL); // setup Nordic SPP service nordic_spp_service_server_init(&nordic_spp_packet_handler); // setup advertisements uint16_t adv_int_min = 0x0030; uint16_t adv_int_max = 0x0030; uint8_t adv_type = 0; bd_addr_t null_addr; memset(null_addr, 0, 6); gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); gap_advertisements_enable(1); // set one-shot timer heartbeat.process = &heartbeat_handler; btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); btstack_run_loop_add_timer(&heartbeat); // beat once beat(); // turn on! hci_power_control(HCI_POWER_ON); return 0; } /* EXAMPLE_END */