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 * hsp_hs_demo.c 40 */ 41 42 // ***************************************************************************** 43 /* EXAMPLE_START(hsp_hs_demo): HSP Headset Demo 44 * 45 * @text This example implements a HSP Headset device that sends and receives 46 * audio signal over HCI SCO. It demonstrates how to receive 47 * an output from a remote audio gateway (AG), and, 48 * if HAVE_POSIX_STDIN is defined, how to control the AG. 49 */ 50 // ***************************************************************************** 51 52 #include "btstack_config.h" 53 54 #include <stdint.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 60 #include "btstack.h" 61 #include "sco_demo_util.h" 62 #ifdef HAVE_POSIX_STDIN 63 #include "stdin_support.h" 64 #endif 65 66 static btstack_packet_callback_registration_t hci_event_callback_registration; 67 68 static uint8_t hsp_service_buffer[150]; 69 static const uint8_t rfcomm_channel_nr = 1; 70 static const char hsp_hs_service_name[] = "Headset Test"; 71 static hci_con_handle_t sco_handle = 0; 72 73 static char hs_cmd_buffer[100]; 74 static bd_addr_t device_addr = {0x00,0x1b,0xDC,0x07,0x32,0xEF}; 75 76 /* @section Audio Transfer Setup 77 * 78 * @text A pre-computed sine wave (160Hz) is used as the input audio signal. 160 Hz. 79 * To send and receive an audio signal, ENABLE_SCO_OVER_HCI has to be defined. 80 * 81 * Tested working setups: 82 * - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud 83 * - Ubuntu 14 64-bit, CSR USB dongle 84 * - OS X 10.11, CSR USB dongle 85 * 86 * Broken setups: 87 * - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud 88 * - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio 89 * - looks like bug in select->FTDI driver as it works correct on Linux 90 * 91 * SCO not routed over HCI yet: 92 * - CSR UART dongle 93 * - Broadcom USB dongle 94 * - Broadcom UART chipset 95 * - .. 96 * 97 */ 98 99 100 static void show_usage(void){ 101 bd_addr_t iut_address; 102 gap_local_bd_addr(iut_address); 103 104 printf("\n--- Bluetooth HSP Headset Test Console %s ---\n", bd_addr_to_str(iut_address)); 105 printf("---\n"); 106 printf("c - Connect to %s\n", bd_addr_to_str(device_addr)); 107 printf("C - Disconnect\n"); 108 printf("a - establish audio connection\n"); 109 printf("A - release audio connection\n"); 110 printf("b - press user button\n"); 111 printf("z - set microphone gain 0\n"); 112 printf("m - set microphone gain 8\n"); 113 printf("M - set microphone gain 15\n"); 114 printf("o - set speaker gain 0\n"); 115 printf("s - set speaker gain 8\n"); 116 printf("S - set speaker gain 15\n"); 117 printf("---\n"); 118 printf("Ctrl-c - exit\n"); 119 printf("---\n"); 120 } 121 122 #ifdef HAVE_POSIX_STDIN 123 static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 124 UNUSED(ds); 125 UNUSED(callback_type); 126 127 char buffer = btstack_stdin_read(); 128 129 switch (buffer){ 130 case 'c': 131 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 132 hsp_hs_connect(device_addr); 133 break; 134 case 'C': 135 printf("Disconnect.\n"); 136 hsp_hs_disconnect(); 137 break; 138 case 'a': 139 printf("Establish audio connection\n"); 140 hsp_hs_establish_audio_connection(); 141 break; 142 case 'A': 143 printf("Release audio connection\n"); 144 hsp_hs_release_audio_connection(); 145 break; 146 147 case 'z': 148 printf("Setting microphone gain 0\n"); 149 hsp_hs_set_microphone_gain(0); 150 break; 151 case 'm': 152 printf("Setting microphone gain 8\n"); 153 hsp_hs_set_microphone_gain(8); 154 break; 155 case 'M': 156 printf("Setting microphone gain 15\n"); 157 hsp_hs_set_microphone_gain(15); 158 break; 159 case 'o': 160 printf("Setting speaker gain 0\n"); 161 hsp_hs_set_speaker_gain(0); 162 break; 163 case 's': 164 printf("Setting speaker gain 8\n"); 165 hsp_hs_set_speaker_gain(8); 166 break; 167 case 'S': 168 printf("Setting speaker gain 15\n"); 169 hsp_hs_set_speaker_gain(15); 170 break; 171 case 'b': 172 printf("Press user button\n"); 173 hsp_hs_send_button_press(); 174 break; 175 default: 176 show_usage(); 177 break; 178 } 179 } 180 #endif 181 182 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 183 UNUSED(channel); 184 185 switch (packet_type){ 186 case HCI_SCO_DATA_PACKET: 187 sco_demo_receive(event, event_size); 188 break; 189 case HCI_EVENT_PACKET: 190 switch (event[0]) { 191 case BTSTACK_EVENT_STATE: 192 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break; 193 show_usage(); 194 break; 195 case HCI_EVENT_SCO_CAN_SEND_NOW: 196 sco_demo_send(sco_handle); 197 break; 198 case HCI_EVENT_HSP_META: 199 switch (event[2]) { 200 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 201 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 202 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 203 } else { 204 printf("RFCOMM connection established.\n"); 205 } 206 break; 207 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 208 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 209 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 210 } else { 211 printf("RFCOMM disconnected.\n"); 212 } 213 break; 214 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 215 if (hsp_subevent_audio_connection_complete_get_status(event)){ 216 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 217 sco_handle = 0; 218 } else { 219 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 220 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 221 hci_request_sco_can_send_now_event(); 222 } 223 break; 224 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 225 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 226 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 227 } else { 228 printf("Audio connection released.\n\n"); 229 sco_handle = 0; 230 } 231 break; 232 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 233 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 234 break; 235 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 236 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 237 break; 238 case HSP_SUBEVENT_RING: 239 printf("HS: RING RING!\n"); 240 break; 241 case HSP_SUBEVENT_AG_INDICATION: { 242 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 243 int size = hsp_subevent_ag_indication_get_value_length(event); 244 if (size >= sizeof(hs_cmd_buffer)-1){ 245 size = sizeof(hs_cmd_buffer)-1; 246 } 247 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size); 248 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer); 249 250 } 251 break; 252 default: 253 printf("event not handled %u\n", event[2]); 254 break; 255 } 256 break; 257 default: 258 break; 259 } 260 default: 261 break; 262 } 263 } 264 265 /* @section Main Application Setup 266 * 267 * @text Listing MainConfiguration shows main application code. 268 * To run a HSP Headset service you need to initialize the SDP, and to create and register HSP HS record with it. 269 * In this example, the SCO over HCI is used to receive and send an audio signal. 270 * 271 * Two packet handlers are registered: 272 * - The HCI SCO packet handler receives audio data. 273 * - 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. 274 * 275 * The stdin_process callback allows for sending commands to the AG. 276 * At the end the Bluetooth stack is started. 277 */ 278 279 /* LISTING_START(MainConfiguration): Setup HSP Headset */ 280 int btstack_main(int argc, const char * argv[]); 281 int btstack_main(int argc, const char * argv[]){ 282 (void)argc; 283 (void)argv; 284 285 sco_demo_init(); 286 287 // register for HCI events 288 hci_event_callback_registration.callback = &packet_handler; 289 hci_add_event_handler(&hci_event_callback_registration); 290 hci_register_sco_packet_handler(&packet_handler); 291 292 l2cap_init(); 293 294 sdp_init(); 295 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 296 hsp_hs_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_hs_service_name, 0); 297 sdp_register_service(hsp_service_buffer); 298 299 rfcomm_init(); 300 301 hsp_hs_init(rfcomm_channel_nr); 302 hsp_hs_register_packet_handler(packet_handler); 303 304 #ifdef HAVE_POSIX_STDIN 305 btstack_stdin_setup(stdin_process); 306 #endif 307 308 gap_set_local_name("BTstack HSP HS"); 309 gap_discoverable_control(1); 310 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 311 gap_set_class_of_device(0x240404); 312 313 // turn on! 314 hci_power_control(HCI_POWER_ON); 315 return 0; 316 } 317 /* LISTING_END */ 318 /* EXAMPLE_END */ 319