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 MATTHIAS 24 * RINGWALD 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 /* 39 * rfcomm_echo.c 40 */ 41 42 #include <unistd.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <strings.h> 46 #include <errno.h> 47 #include <string.h> 48 #include <fcntl.h> 49 #include <sys/types.h> 50 #include <sys/stat.h> 51 52 #include "btstack_client.h" 53 #include "btstack_run_loop_posix.h" 54 #include "classic/sdp_util.h" 55 56 // input from command line arguments 57 bd_addr_t addr = { }; 58 hci_con_handle_t con_handle; 59 uint16_t mtu; 60 char pin[17]; 61 int counter = 0; 62 uint16_t rfcomm_channel_nr; 63 uint16_t rfcomm_channel_id; 64 65 uint8_t service_buffer[150]; 66 67 void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 68 bd_addr_t event_addr; 69 70 switch (packet_type) { 71 72 case RFCOMM_DATA_PACKET: 73 printf("Received RFCOMM data on channel id %u, size %u\n", channel, size); 74 printf_hexdump(packet, size); 75 bt_send_rfcomm(channel, packet, size); 76 break; 77 78 case HCI_EVENT_PACKET: 79 switch (hci_event_packet_get_type(packet)) { 80 81 case BTSTACK_EVENT_POWERON_FAILED: 82 // handle HCI init failure 83 printf("HCI Init failed - make sure you have turned off Bluetooth in the System Settings\n"); 84 exit(1); 85 break; 86 87 case BTSTACK_EVENT_STATE: 88 // bt stack activated, get started 89 if (packet[2] == HCI_STATE_WORKING) { 90 // get persistent RFCOMM channel 91 printf("HCI_STATE_WORKING\n"); 92 bt_send_cmd(&rfcomm_persistent_channel_for_service_cmd, "ch.ringwald.btstack.rfcomm_echo2"); 93 } 94 break; 95 96 case RFCOMM_EVENT_PERSISTENT_CHANNEL: 97 rfcomm_channel_nr = packet[3]; 98 printf("RFCOMM channel %u was assigned by BTdaemon\n", rfcomm_channel_nr); 99 bt_send_cmd(&rfcomm_register_service_cmd, rfcomm_channel_nr, 0xffff); // reserved channel, mtu limited by l2cap 100 break; 101 102 case RFCOMM_EVENT_SERVICE_REGISTERED: 103 printf("RFCOMM_EVENT_SERVICE_REGISTERED channel: %u, status: 0x%02x\n", packet[3], packet[2]); 104 // register SDP for our SPP 105 sdp_create_spp_service((uint8_t*)service_buffer, 0x10001, rfcomm_channel_nr, "SPP ECHO"); 106 bt_send_cmd(&sdp_register_service_record_cmd, service_buffer); 107 bt_send_cmd(&btstack_set_discoverable, 1); 108 break; 109 110 case HCI_EVENT_PIN_CODE_REQUEST: 111 // inform about pin code request 112 printf("Using PIN 0000\n"); 113 reverse_bd_addr(&packet[2], 114 event_addr); 115 bt_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); 116 break; 117 118 case RFCOMM_EVENT_INCOMING_CONNECTION: 119 // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) 120 reverse_bd_addr(&packet[2], 121 event_addr); 122 rfcomm_channel_nr = packet[8]; 123 rfcomm_channel_id = little_endian_read_16(packet, 9); 124 printf("RFCOMM channel %u requested for %s\n", rfcomm_channel_nr, bd_addr_to_str(event_addr)); 125 bt_send_cmd(&rfcomm_accept_connection_cmd, rfcomm_channel_id); 126 break; 127 128 case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: 129 // data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16) 130 if (packet[2]) { 131 printf("RFCOMM channel open failed, status %u\n", packet[2]); 132 } else { 133 rfcomm_channel_id = little_endian_read_16(packet, 12); 134 mtu = little_endian_read_16(packet, 14); 135 printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_channel_id, mtu); 136 } 137 break; 138 139 case HCI_EVENT_DISCONNECTION_COMPLETE: 140 // connection closed -> quit test app 141 printf("Basebank connection closed\n"); 142 break; 143 144 default: 145 break; 146 } 147 break; 148 default: 149 break; 150 } 151 } 152 153 154 int main (int argc, const char * argv[]){ 155 156 btstack_run_loop_init(btstack_run_loop_posix_get_instance()); 157 int err = bt_open(); 158 if (err) { 159 fprintf(stderr,"Failed to open connection to BTdaemon, err %d\n",err); 160 return 1; 161 } 162 bt_register_packet_handler(packet_handler); 163 164 bt_send_cmd(&btstack_set_power_mode, HCI_POWER_ON ); 165 btstack_run_loop_execute(); 166 bt_close(); 167 return 0; 168 } 169