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 #define __BTSTACK_FILE__ "hsp_hs_demo.c" 39 40 /* 41 * hsp_hs_demo.c 42 */ 43 44 // ***************************************************************************** 45 /* EXAMPLE_START(hsp_hs_demo): HSP Headset Demo 46 * 47 * @text This example implements a HSP Headset device that sends and receives 48 * audio signal over HCI SCO. It demonstrates how to receive 49 * an output from a remote audio gateway (AG), and, 50 * if HAVE_BTSTACK_STDIN is defined, how to control the AG. 51 */ 52 // ***************************************************************************** 53 54 #include "btstack_config.h" 55 56 #include <stdint.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 61 #include "btstack.h" 62 #include "sco_demo_util.h" 63 #ifdef HAVE_BTSTACK_STDIN 64 #include "btstack_stdin.h" 65 #endif 66 67 static btstack_packet_callback_registration_t hci_event_callback_registration; 68 69 static uint8_t hsp_service_buffer[150]; 70 static const uint8_t rfcomm_channel_nr = 1; 71 static const char hsp_hs_service_name[] = "Headset Test"; 72 static hci_con_handle_t sco_handle = 0; 73 74 static char hs_cmd_buffer[100]; 75 static bd_addr_t device_addr = {0x00,0x1b,0xDC,0x07,0x32,0xEF}; 76 77 /* @section Audio Transfer Setup 78 * 79 * @text A pre-computed sine wave (160Hz) is used as the input audio signal. 160 Hz. 80 * To send and receive an audio signal, ENABLE_SCO_OVER_HCI has to be defined. 81 * 82 * Tested working setups: 83 * - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud 84 * - Ubuntu 14 64-bit, CSR USB dongle 85 * - OS X 10.11, CSR USB dongle 86 * 87 * Broken setups: 88 * - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud 89 * - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio 90 * - looks like bug in select->FTDI driver as it works correct on Linux 91 * 92 * SCO not routed over HCI yet: 93 * - CSR UART dongle 94 * - Broadcom USB dongle 95 * - Broadcom UART chipset 96 * - .. 97 * 98 */ 99 100 101 static void show_usage(void){ 102 bd_addr_t iut_address; 103 gap_local_bd_addr(iut_address); 104 105 printf("\n--- Bluetooth HSP Headset Test Console %s ---\n", bd_addr_to_str(iut_address)); 106 printf("---\n"); 107 printf("c - Connect to %s\n", bd_addr_to_str(device_addr)); 108 printf("C - Disconnect\n"); 109 printf("a - establish audio connection\n"); 110 printf("A - release audio connection\n"); 111 printf("b - press user button\n"); 112 printf("z - set microphone gain 0\n"); 113 printf("m - set microphone gain 8\n"); 114 printf("M - set microphone gain 15\n"); 115 printf("o - set speaker gain 0\n"); 116 printf("s - set speaker gain 8\n"); 117 printf("S - set speaker gain 15\n"); 118 printf("\n"); 119 } 120 121 #ifdef HAVE_BTSTACK_STDIN 122 static void stdin_process(char c){ 123 switch (c){ 124 case 'c': 125 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 126 hsp_hs_connect(device_addr); 127 break; 128 case 'C': 129 printf("Disconnect.\n"); 130 hsp_hs_disconnect(); 131 break; 132 case 'a': 133 printf("Establish audio connection\n"); 134 hsp_hs_establish_audio_connection(); 135 break; 136 case 'A': 137 printf("Release audio connection\n"); 138 hsp_hs_release_audio_connection(); 139 break; 140 141 case 'z': 142 printf("Setting microphone gain 0\n"); 143 hsp_hs_set_microphone_gain(0); 144 break; 145 case 'm': 146 printf("Setting microphone gain 8\n"); 147 hsp_hs_set_microphone_gain(8); 148 break; 149 case 'M': 150 printf("Setting microphone gain 15\n"); 151 hsp_hs_set_microphone_gain(15); 152 break; 153 case 'o': 154 printf("Setting speaker gain 0\n"); 155 hsp_hs_set_speaker_gain(0); 156 break; 157 case 's': 158 printf("Setting speaker gain 8\n"); 159 hsp_hs_set_speaker_gain(8); 160 break; 161 case 'S': 162 printf("Setting speaker gain 15\n"); 163 hsp_hs_set_speaker_gain(15); 164 break; 165 case 'b': 166 printf("Press user button\n"); 167 hsp_hs_send_button_press(); 168 break; 169 default: 170 show_usage(); 171 break; 172 } 173 } 174 #endif 175 176 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 177 UNUSED(channel); 178 179 switch (packet_type){ 180 case HCI_SCO_DATA_PACKET: 181 sco_demo_receive(event, event_size); 182 break; 183 case HCI_EVENT_PACKET: 184 switch (event[0]) { 185 case BTSTACK_EVENT_STATE: 186 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break; 187 show_usage(); 188 break; 189 case HCI_EVENT_SCO_CAN_SEND_NOW: 190 sco_demo_send(sco_handle); 191 break; 192 case HCI_EVENT_HSP_META: 193 switch (event[2]) { 194 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 195 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 196 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 197 } else { 198 printf("RFCOMM connection established.\n"); 199 } 200 break; 201 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 202 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 203 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 204 } else { 205 printf("RFCOMM disconnected.\n"); 206 } 207 break; 208 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 209 if (hsp_subevent_audio_connection_complete_get_status(event)){ 210 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 211 sco_handle = 0; 212 } else { 213 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 214 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 215 hci_request_sco_can_send_now_event(); 216 } 217 break; 218 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 219 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 220 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 221 } else { 222 printf("Audio connection released.\n\n"); 223 sco_handle = 0; 224 } 225 break; 226 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 227 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 228 break; 229 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 230 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 231 break; 232 case HSP_SUBEVENT_RING: 233 printf("HS: RING RING!\n"); 234 break; 235 case HSP_SUBEVENT_AG_INDICATION: { 236 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 237 unsigned int size = hsp_subevent_ag_indication_get_value_length(event); 238 if (size >= sizeof(hs_cmd_buffer)-1){ 239 size = sizeof(hs_cmd_buffer)-1; 240 } 241 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size); 242 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer); 243 244 } 245 break; 246 default: 247 printf("event not handled %u\n", event[2]); 248 break; 249 } 250 break; 251 default: 252 break; 253 } 254 default: 255 break; 256 } 257 } 258 259 /* @section Main Application Setup 260 * 261 * @text Listing MainConfiguration shows main application code. 262 * To run a HSP Headset service you need to initialize the SDP, and to create and register HSP HS record with it. 263 * In this example, the SCO over HCI is used to receive and send an audio signal. 264 * 265 * Two packet handlers are registered: 266 * - The HCI SCO packet handler receives audio data. 267 * - The HSP HS packet handler is used to trigger sending of audio data and commands to the AG. It also receives the AG's answers. 268 * 269 * The stdin_process callback allows for sending commands to the AG. 270 * At the end the Bluetooth stack is started. 271 */ 272 273 /* LISTING_START(MainConfiguration): Setup HSP Headset */ 274 int btstack_main(int argc, const char * argv[]); 275 int btstack_main(int argc, const char * argv[]){ 276 (void)argc; 277 (void)argv; 278 279 sco_demo_init(); 280 281 // register for HCI events 282 hci_event_callback_registration.callback = &packet_handler; 283 hci_add_event_handler(&hci_event_callback_registration); 284 hci_register_sco_packet_handler(&packet_handler); 285 286 l2cap_init(); 287 288 sdp_init(); 289 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 290 hsp_hs_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_hs_service_name, 0); 291 sdp_register_service(hsp_service_buffer); 292 293 rfcomm_init(); 294 295 hsp_hs_init(rfcomm_channel_nr); 296 hsp_hs_register_packet_handler(packet_handler); 297 298 #ifdef HAVE_BTSTACK_STDIN 299 btstack_stdin_setup(stdin_process); 300 #endif 301 302 gap_set_local_name("HSP HS Demo 00:00:00:00:00:00"); 303 gap_discoverable_control(1); 304 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 305 gap_set_class_of_device(0x240404); 306 307 // turn on! 308 hci_power_control(HCI_POWER_ON); 309 return 0; 310 } 311 /* LISTING_END */ 312 /* EXAMPLE_END */ 313