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227 lines
8.1 KiB
C
227 lines
8.1 KiB
C
/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
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* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "ublox_spp_le_counter.c"
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// *****************************************************************************
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/* EXAMPLE_START(ublox_spp_le_counter): LE u-blox SPP-like Heartbeat Server
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*
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*/
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// *****************************************************************************
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "btstack.h"
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#include "ble/gatt-service/device_information_service_server.h"
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#include "ble/gatt-service/ublox_spp_service_server.h"
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// ublox_spp_le_counter.gatt contains the declaration of the provided GATT Services + Characteristics
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// ublox_spp_le_counter.h contains the binary representation of ublox_spp_le_counter.gatt
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// it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py ublox_spp_le_counter.gatt ublox_spp_le_counter.h
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// it needs to be regenerated when the GATT Database declared in ublox_spp_le_counter.gatt file is modified
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#include "ublox_spp_le_counter.h"
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#define HEARTBEAT_PERIOD_MS 1000
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/* @section Main Application Setup
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*
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* @text Listing MainConfiguration shows main application code.
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* It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled
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* ATT Database generated from $ublox_le_counter.gatt$.
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* Additionally, it enables the Battery Service Server with the current battery level.
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* Finally, it configures the advertisements
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* and the heartbeat handler and boots the Bluetooth stack.
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* In this example, the Advertisement contains the Flags attribute and the device name.
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* The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported.
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*/
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/* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */
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static btstack_timer_source_t heartbeat;
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static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID;
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static btstack_context_callback_registration_t send_request;
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static btstack_packet_callback_registration_t hci_event_callback_registration;
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const uint8_t adv_data[] = {
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// Flags general discoverable, BR/EDR not supported
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2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06,
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// Name
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5, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, '6', '-','5', '6',
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// UUID ...
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17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x1, 0xd7, 0xe9, 0x1, 0x4f, 0xf3, 0x44, 0xe7, 0x83, 0x8f, 0xe2, 0x26, 0xb9, 0xe1, 0x56, 0x24,
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};
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const uint8_t adv_data_len = sizeof(adv_data);
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/* LISTING_END */
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/*
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* @section Heartbeat Handler
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*
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* @text The heartbeat handler updates the value of the single Characteristic provided in this example,
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* and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat.
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*/
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/* LISTING_START(heartbeat): Hearbeat Handler */
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static int counter = 0;
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static char counter_string[30];
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static int counter_string_len;
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static void beat(void){
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counter++;
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counter_string_len = snprintf(counter_string, sizeof(counter_string), "BTstack counter %03u", counter);
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}
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static void ublox_can_send(void * context){
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UNUSED(context);
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beat();
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printf("SEND: %s\n", counter_string);
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ublox_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len);
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}
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static void heartbeat_handler(struct btstack_timer_source *ts){
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if (con_handle != HCI_CON_HANDLE_INVALID) {
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send_request.callback = &ublox_can_send;
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ublox_spp_service_server_request_can_send_now(&send_request, con_handle);
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}
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btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
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btstack_run_loop_add_timer(ts);
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}
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/* LISTING_END */
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static void ublox_spp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
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UNUSED(channel);
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switch (packet_type){
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case HCI_EVENT_PACKET:
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if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META) break;
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switch (hci_event_gattservice_meta_get_subevent_code(packet)){
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case GATTSERVICE_SUBEVENT_SPP_SERVICE_CONNECTED:
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con_handle = gattservice_subevent_spp_service_connected_get_con_handle(packet);
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printf("Connected with handle 0x%04x\n", con_handle);
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break;
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case GATTSERVICE_SUBEVENT_SPP_SERVICE_DISCONNECTED:
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con_handle = HCI_CON_HANDLE_INVALID;
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break;
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default:
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break;
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}
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break;
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case RFCOMM_DATA_PACKET:
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printf("RECV: ");
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printf_hexdump(packet, size);
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break;
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default:
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break;
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}
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}
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/*
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* @section Packet Handler
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*
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* @text The packet handler is used to:
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* - stop the counter after a disconnect
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*/
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/* LISTING_START(packetHandler): Packet Handler */
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static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
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UNUSED(channel);
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UNUSED(size);
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switch (packet_type) {
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case HCI_EVENT_PACKET:
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switch (hci_event_packet_get_type(packet)) {
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case HCI_EVENT_DISCONNECTION_COMPLETE:
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con_handle = HCI_CON_HANDLE_INVALID;
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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}
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/* LISTING_END */
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int btstack_main(void);
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int btstack_main(void)
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{
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// register for HCI events
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hci_event_callback_registration.callback = &packet_handler;
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hci_add_event_handler(&hci_event_callback_registration);
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l2cap_init();
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// setup SM: Display only
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sm_init();
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// setup ATT server
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att_server_init(profile_data, NULL, NULL);
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// setup device information service
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device_information_service_server_init();
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// setup Nordic SPP service
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ublox_spp_service_server_init(&ublox_spp_packet_handler);
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// setup advertisements
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uint16_t adv_int_min = 0x0030;
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uint16_t adv_int_max = 0x0030;
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uint8_t adv_type = 0;
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bd_addr_t null_addr;
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memset(null_addr, 0, 6);
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gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00);
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gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data);
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gap_advertisements_enable(1);
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// set one-shot timer
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heartbeat.process = &heartbeat_handler;
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btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
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btstack_run_loop_add_timer(&heartbeat);
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// beat once
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beat();
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// turn on!
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hci_power_control(HCI_POWER_ON);
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return 0;
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}
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/* EXAMPLE_END */
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