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_POSIX_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 #include <unistd.h> 61 62 #include "btstack.h" 63 #include "sco_demo_util.h" 64 #ifdef HAVE_POSIX_STDIN 65 #include "stdin_support.h" 66 #endif 67 68 static btstack_packet_callback_registration_t hci_event_callback_registration; 69 70 static uint8_t hsp_service_buffer[150]; 71 static const uint8_t rfcomm_channel_nr = 1; 72 static const char hsp_hs_service_name[] = "Headset Test"; 73 static hci_con_handle_t sco_handle = 0; 74 75 static char hs_cmd_buffer[100]; 76 static bd_addr_t device_addr = {0x00,0x1b,0xDC,0x07,0x32,0xEF}; 77 78 /* @section Audio Transfer Setup 79 * 80 * @text A pre-computed sine wave (160Hz) is used as the input audio signal. 160 Hz. 81 * To send and receive an audio signal, ENABLE_SCO_OVER_HCI has to be defined. 82 * 83 * Tested working setups: 84 * - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud 85 * - Ubuntu 14 64-bit, CSR USB dongle 86 * - OS X 10.11, CSR USB dongle 87 * 88 * Broken setups: 89 * - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud 90 * - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio 91 * - looks like bug in select->FTDI driver as it works correct on Linux 92 * 93 * SCO not routed over HCI yet: 94 * - CSR UART dongle 95 * - Broadcom USB dongle 96 * - Broadcom UART chipset 97 * - .. 98 * 99 */ 100 101 102 static void show_usage(void){ 103 bd_addr_t iut_address; 104 gap_local_bd_addr(iut_address); 105 106 printf("\n--- Bluetooth HSP Headset Test Console %s ---\n", bd_addr_to_str(iut_address)); 107 printf("---\n"); 108 printf("c - Connect to %s\n", bd_addr_to_str(device_addr)); 109 printf("C - Disconnect\n"); 110 printf("a - establish audio connection\n"); 111 printf("A - release audio connection\n"); 112 printf("b - press user button\n"); 113 printf("z - set microphone gain 0\n"); 114 printf("m - set microphone gain 8\n"); 115 printf("M - set microphone gain 15\n"); 116 printf("o - set speaker gain 0\n"); 117 printf("s - set speaker gain 8\n"); 118 printf("S - set speaker gain 15\n"); 119 printf("---\n"); 120 printf("Ctrl-c - exit\n"); 121 printf("---\n"); 122 } 123 124 #ifdef HAVE_POSIX_STDIN 125 static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 126 UNUSED(ds); 127 UNUSED(callback_type); 128 129 char buffer = btstack_stdin_read(); 130 131 switch (buffer){ 132 case 'c': 133 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 134 hsp_hs_connect(device_addr); 135 break; 136 case 'C': 137 printf("Disconnect.\n"); 138 hsp_hs_disconnect(); 139 break; 140 case 'a': 141 printf("Establish audio connection\n"); 142 hsp_hs_establish_audio_connection(); 143 break; 144 case 'A': 145 printf("Release audio connection\n"); 146 hsp_hs_release_audio_connection(); 147 break; 148 149 case 'z': 150 printf("Setting microphone gain 0\n"); 151 hsp_hs_set_microphone_gain(0); 152 break; 153 case 'm': 154 printf("Setting microphone gain 8\n"); 155 hsp_hs_set_microphone_gain(8); 156 break; 157 case 'M': 158 printf("Setting microphone gain 15\n"); 159 hsp_hs_set_microphone_gain(15); 160 break; 161 case 'o': 162 printf("Setting speaker gain 0\n"); 163 hsp_hs_set_speaker_gain(0); 164 break; 165 case 's': 166 printf("Setting speaker gain 8\n"); 167 hsp_hs_set_speaker_gain(8); 168 break; 169 case 'S': 170 printf("Setting speaker gain 15\n"); 171 hsp_hs_set_speaker_gain(15); 172 break; 173 case 'b': 174 printf("Press user button\n"); 175 hsp_hs_send_button_press(); 176 break; 177 default: 178 show_usage(); 179 break; 180 } 181 } 182 #endif 183 184 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 185 UNUSED(channel); 186 187 switch (packet_type){ 188 case HCI_SCO_DATA_PACKET: 189 sco_demo_receive(event, event_size); 190 break; 191 case HCI_EVENT_PACKET: 192 switch (event[0]) { 193 case BTSTACK_EVENT_STATE: 194 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break; 195 show_usage(); 196 break; 197 case HCI_EVENT_SCO_CAN_SEND_NOW: 198 sco_demo_send(sco_handle); 199 break; 200 case HCI_EVENT_HSP_META: 201 switch (event[2]) { 202 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 203 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 204 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 205 } else { 206 printf("RFCOMM connection established.\n"); 207 } 208 break; 209 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 210 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 211 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 212 } else { 213 printf("RFCOMM disconnected.\n"); 214 } 215 break; 216 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 217 if (hsp_subevent_audio_connection_complete_get_status(event)){ 218 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 219 sco_handle = 0; 220 } else { 221 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 222 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 223 hci_request_sco_can_send_now_event(); 224 } 225 break; 226 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 227 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 228 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 229 } else { 230 printf("Audio connection released.\n\n"); 231 sco_handle = 0; 232 } 233 break; 234 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 235 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 236 break; 237 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 238 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 239 break; 240 case HSP_SUBEVENT_RING: 241 printf("HS: RING RING!\n"); 242 break; 243 case HSP_SUBEVENT_AG_INDICATION: { 244 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 245 int size = hsp_subevent_ag_indication_get_value_length(event); 246 if (size >= sizeof(hs_cmd_buffer)-1){ 247 size = sizeof(hs_cmd_buffer)-1; 248 } 249 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size); 250 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer); 251 252 } 253 break; 254 default: 255 printf("event not handled %u\n", event[2]); 256 break; 257 } 258 break; 259 default: 260 break; 261 } 262 default: 263 break; 264 } 265 } 266 267 /* @section Main Application Setup 268 * 269 * @text Listing MainConfiguration shows main application code. 270 * To run a HSP Headset service you need to initialize the SDP, and to create and register HSP HS record with it. 271 * In this example, the SCO over HCI is used to receive and send an audio signal. 272 * 273 * Two packet handlers are registered: 274 * - The HCI SCO packet handler receives audio data. 275 * - 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. 276 * 277 * The stdin_process callback allows for sending commands to the AG. 278 * At the end the Bluetooth stack is started. 279 */ 280 281 /* LISTING_START(MainConfiguration): Setup HSP Headset */ 282 int btstack_main(int argc, const char * argv[]); 283 int btstack_main(int argc, const char * argv[]){ 284 (void)argc; 285 (void)argv; 286 287 sco_demo_init(); 288 289 // register for HCI events 290 hci_event_callback_registration.callback = &packet_handler; 291 hci_add_event_handler(&hci_event_callback_registration); 292 hci_register_sco_packet_handler(&packet_handler); 293 294 l2cap_init(); 295 296 sdp_init(); 297 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 298 hsp_hs_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_hs_service_name, 0); 299 sdp_register_service(hsp_service_buffer); 300 301 rfcomm_init(); 302 303 hsp_hs_init(rfcomm_channel_nr); 304 hsp_hs_register_packet_handler(packet_handler); 305 306 #ifdef HAVE_POSIX_STDIN 307 btstack_stdin_setup(stdin_process); 308 #endif 309 310 gap_set_local_name("BTstack HSP HS"); 311 gap_discoverable_control(1); 312 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 313 gap_set_class_of_device(0x240404); 314 315 // turn on! 316 hci_power_control(HCI_POWER_ON); 317 return 0; 318 } 319 /* LISTING_END */ 320 /* EXAMPLE_END */ 321