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 * btstack.c 40 * 41 * Created by Matthias Ringwald on 7/1/09. 42 * 43 * BTstack client API 44 */ 45 46 #include "btstack.h" 47 48 #include "l2cap.h" 49 #include "socket_connection.h" 50 #include "run_loop.h" 51 52 #include <string.h> 53 #include <unistd.h> 54 #include <stdarg.h> 55 #include <stdio.h> 56 57 // static uint8_t hci_cmd_buffer[3+255]; // HCI Command Header + max payload 58 static uint8_t hci_cmd_buffer[HCI_ACL_BUFFER_SIZE]; // BTstack command packets are not size restricted 59 60 static connection_t *btstack_connection = NULL; 61 62 /** prototypes & dummy functions */ 63 static void dummy_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){}; 64 65 /** local globals :) */ 66 static void (*client_packet_handler)(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size) = dummy_handler; 67 68 static const char * daemon_tcp_address = NULL; 69 static uint16_t daemon_tcp_port = BTSTACK_PORT; 70 71 // optional: if called before bt_open, TCP socket is used instead of local unix socket 72 // note: address is not copied and must be valid during bt_open 73 void bt_use_tcp(const char * address, uint16_t port){ 74 daemon_tcp_address = address; 75 daemon_tcp_port = port; 76 } 77 78 static int socket_packet_handler(connection_t *connection, uint16_t packet_type, uint16_t channel, uint8_t *data, uint16_t size){ 79 // log_info("BTstack client handler: packet type %u, data[0] %x", packet_type, data[0]); 80 (*client_packet_handler)(packet_type, channel, data, size); 81 return 0; 82 } 83 84 // init BTstack library 85 int bt_open(void){ 86 87 socket_connection_register_packet_callback(socket_packet_handler); 88 89 // BTdaemon 90 if (daemon_tcp_address) { 91 btstack_connection = socket_connection_open_tcp(daemon_tcp_address,daemon_tcp_port); 92 } else { 93 btstack_connection = socket_connection_open_unix(); 94 } 95 if (!btstack_connection) return -1; 96 97 return 0; 98 } 99 100 // stop using BTstack library 101 int bt_close(void){ 102 return socket_connection_close_tcp(btstack_connection); 103 } 104 105 // send hci cmd packet 106 int bt_send_cmd(const hci_cmd_t *cmd, ...){ 107 va_list argptr; 108 va_start(argptr, cmd); 109 uint16_t len = hci_create_cmd_internal(hci_cmd_buffer, cmd, argptr); 110 va_end(argptr); 111 socket_connection_send_packet(btstack_connection, HCI_COMMAND_DATA_PACKET, 0, hci_cmd_buffer, len); 112 return 0; 113 } 114 115 // register packet handler 116 btstack_packet_handler_t bt_register_packet_handler(btstack_packet_handler_t handler){ 117 btstack_packet_handler_t old_handler = client_packet_handler; 118 client_packet_handler = handler; 119 return old_handler; 120 } 121 122 void bt_send_l2cap(uint16_t source_cid, uint8_t *data, uint16_t len){ 123 // send 124 socket_connection_send_packet(btstack_connection, L2CAP_DATA_PACKET, source_cid, data, len); 125 } 126 127 void bt_send_rfcomm(uint16_t rfcomm_cid, uint8_t *data, uint16_t len){ 128 // send 129 socket_connection_send_packet(btstack_connection, RFCOMM_DATA_PACKET, rfcomm_cid, data, len); 130 } 131 132 void bt_send_acl(uint8_t * data, uint16_t len){ 133 // send 134 socket_connection_send_packet(btstack_connection, HCI_ACL_DATA_PACKET, 0, data, len); 135 } 136