1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "sdp_rfcomm_query.c" 39 40 // ***************************************************************************** 41 /* EXAMPLE_START(sdp_rfcomm_query): SDP Client - Query RFCOMM SDP record 42 * 43 * @text The example shows how the SDP Client is used to get all RFCOMM service 44 * records from a remote device. It extracts the remote RFCOMM Server Channel, 45 * which are needed to connect to a remote RFCOMM service. 46 */ 47 // ***************************************************************************** 48 49 #include "btstack_config.h" 50 51 #include <stdint.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 56 57 #include "hci_cmd.h" 58 #include "btstack_run_loop.h" 59 60 #include "btstack.h" 61 62 #define NUM_SERVICES 10 63 64 static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 65 66 static bd_addr_t remote = {0x84, 0x38, 0x35, 0x65, 0xD1, 0x15}; 67 68 static struct { 69 uint8_t channel_nr; 70 char service_name[SDP_SERVICE_NAME_LEN+1]; 71 } services[NUM_SERVICES]; 72 73 static uint8_t service_index = 0; 74 75 static btstack_packet_callback_registration_t hci_event_callback_registration; 76 static btstack_context_callback_registration_t handle_sdp_client_query_request; 77 78 static void handle_start_sdp_client_query(void * context){ 79 UNUSED(context); 80 sdp_client_query_rfcomm_channel_and_name_for_uuid(&handle_query_rfcomm_event, remote, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT); 81 } 82 83 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 84 UNUSED(channel); 85 UNUSED(size); 86 87 if (packet_type != HCI_EVENT_PACKET) return; 88 uint8_t event = hci_event_packet_get_type(packet); 89 90 switch (event) { 91 case BTSTACK_EVENT_STATE: 92 // BTstack activated, get started 93 if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){ 94 handle_sdp_client_query_request.callback = &handle_start_sdp_client_query; 95 (void) sdp_client_register_query_callback(&handle_sdp_client_query_request); 96 } 97 break; 98 default: 99 break; 100 } 101 } 102 103 static void store_found_service(const char * name, uint8_t port){ 104 printf("APP: Service name: '%s', RFCOMM port %u\n", name, port); 105 if (service_index < NUM_SERVICES){ 106 services[service_index].channel_nr = port; 107 strncpy(services[service_index].service_name, (char*) name, SDP_SERVICE_NAME_LEN); 108 services[service_index].service_name[SDP_SERVICE_NAME_LEN] = 0; 109 service_index++; 110 } else { 111 printf("APP: list full - ignore\n"); 112 return; 113 } 114 } 115 116 static void report_found_services(void){ 117 printf("\n *** Client query response done. "); 118 if (service_index == 0){ 119 printf("No service found.\n\n"); 120 } else { 121 printf("Found following %d services:\n", service_index); 122 } 123 int i; 124 for (i=0; i<service_index; i++){ 125 printf(" Service name %s, RFCOMM port %u\n", services[i].service_name, services[i].channel_nr); 126 } 127 printf(" ***\n\n"); 128 } 129 130 static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 131 UNUSED(packet_type); 132 UNUSED(channel); 133 UNUSED(size); 134 135 switch (hci_event_packet_get_type(packet)){ 136 case SDP_EVENT_QUERY_RFCOMM_SERVICE: 137 store_found_service(sdp_event_query_rfcomm_service_get_name(packet), 138 sdp_event_query_rfcomm_service_get_rfcomm_channel(packet)); 139 break; 140 case SDP_EVENT_QUERY_COMPLETE: 141 if (sdp_event_query_complete_get_status(packet)){ 142 printf("SDP query failed 0x%02x\n", sdp_event_query_complete_get_status(packet)); 143 break; 144 } 145 printf("SDP query done.\n"); 146 report_found_services(); 147 break; 148 default: 149 break; 150 } 151 } 152 153 int btstack_main(int argc, const char * argv[]); 154 int btstack_main(int argc, const char * argv[]){ 155 (void)argc; 156 (void)argv; 157 158 // init L2CAP 159 l2cap_init(); 160 161 // register for HCI events 162 hci_event_callback_registration.callback = &packet_handler; 163 hci_add_event_handler(&hci_event_callback_registration); 164 165 // turn on! 166 hci_power_control(HCI_POWER_ON); 167 168 return 0; 169 } 170 171 /* EXAMPLE_END */