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 printf("Ctrl-c - exit\n"); 120 printf("---\n"); 121 } 122 123 #ifdef HAVE_BTSTACK_STDIN 124 static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 125 UNUSED(ds); 126 UNUSED(callback_type); 127 128 char buffer = btstack_stdin_read(); 129 130 switch (buffer){ 131 case 'c': 132 printf("Connect to %s\n", bd_addr_to_str(device_addr)); 133 hsp_hs_connect(device_addr); 134 break; 135 case 'C': 136 printf("Disconnect.\n"); 137 hsp_hs_disconnect(); 138 break; 139 case 'a': 140 printf("Establish audio connection\n"); 141 hsp_hs_establish_audio_connection(); 142 break; 143 case 'A': 144 printf("Release audio connection\n"); 145 hsp_hs_release_audio_connection(); 146 break; 147 148 case 'z': 149 printf("Setting microphone gain 0\n"); 150 hsp_hs_set_microphone_gain(0); 151 break; 152 case 'm': 153 printf("Setting microphone gain 8\n"); 154 hsp_hs_set_microphone_gain(8); 155 break; 156 case 'M': 157 printf("Setting microphone gain 15\n"); 158 hsp_hs_set_microphone_gain(15); 159 break; 160 case 'o': 161 printf("Setting speaker gain 0\n"); 162 hsp_hs_set_speaker_gain(0); 163 break; 164 case 's': 165 printf("Setting speaker gain 8\n"); 166 hsp_hs_set_speaker_gain(8); 167 break; 168 case 'S': 169 printf("Setting speaker gain 15\n"); 170 hsp_hs_set_speaker_gain(15); 171 break; 172 case 'b': 173 printf("Press user button\n"); 174 hsp_hs_send_button_press(); 175 break; 176 default: 177 show_usage(); 178 break; 179 } 180 } 181 #endif 182 183 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){ 184 UNUSED(channel); 185 186 switch (packet_type){ 187 case HCI_SCO_DATA_PACKET: 188 sco_demo_receive(event, event_size); 189 break; 190 case HCI_EVENT_PACKET: 191 switch (event[0]) { 192 case BTSTACK_EVENT_STATE: 193 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break; 194 show_usage(); 195 break; 196 case HCI_EVENT_SCO_CAN_SEND_NOW: 197 sco_demo_send(sco_handle); 198 break; 199 case HCI_EVENT_HSP_META: 200 switch (event[2]) { 201 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE: 202 if (hsp_subevent_rfcomm_connection_complete_get_status(event)){ 203 printf("RFCOMM connection establishement failed with status %u\n", hsp_subevent_rfcomm_connection_complete_get_status(event)); 204 } else { 205 printf("RFCOMM connection established.\n"); 206 } 207 break; 208 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE: 209 if (hsp_subevent_rfcomm_disconnection_complete_get_status(event)){ 210 printf("RFCOMM disconnection failed with status %u.\n", hsp_subevent_rfcomm_disconnection_complete_get_status(event)); 211 } else { 212 printf("RFCOMM disconnected.\n"); 213 } 214 break; 215 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 216 if (hsp_subevent_audio_connection_complete_get_status(event)){ 217 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 218 sco_handle = 0; 219 } else { 220 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 221 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 222 hci_request_sco_can_send_now_event(); 223 } 224 break; 225 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 226 if (hsp_subevent_audio_disconnection_complete_get_status(event)){ 227 printf("Audio connection releasing failed with status %u\n", hsp_subevent_audio_disconnection_complete_get_status(event)); 228 } else { 229 printf("Audio connection released.\n\n"); 230 sco_handle = 0; 231 } 232 break; 233 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 234 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 235 break; 236 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 237 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 238 break; 239 case HSP_SUBEVENT_RING: 240 printf("HS: RING RING!\n"); 241 break; 242 case HSP_SUBEVENT_AG_INDICATION: { 243 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 244 int size = hsp_subevent_ag_indication_get_value_length(event); 245 if (size >= sizeof(hs_cmd_buffer)-1){ 246 size = sizeof(hs_cmd_buffer)-1; 247 } 248 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size); 249 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer); 250 251 } 252 break; 253 default: 254 printf("event not handled %u\n", event[2]); 255 break; 256 } 257 break; 258 default: 259 break; 260 } 261 default: 262 break; 263 } 264 } 265 266 /* @section Main Application Setup 267 * 268 * @text Listing MainConfiguration shows main application code. 269 * To run a HSP Headset service you need to initialize the SDP, and to create and register HSP HS record with it. 270 * In this example, the SCO over HCI is used to receive and send an audio signal. 271 * 272 * Two packet handlers are registered: 273 * - The HCI SCO packet handler receives audio data. 274 * - 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. 275 * 276 * The stdin_process callback allows for sending commands to the AG. 277 * At the end the Bluetooth stack is started. 278 */ 279 280 /* LISTING_START(MainConfiguration): Setup HSP Headset */ 281 int btstack_main(int argc, const char * argv[]); 282 int btstack_main(int argc, const char * argv[]){ 283 (void)argc; 284 (void)argv; 285 286 sco_demo_init(); 287 288 // register for HCI events 289 hci_event_callback_registration.callback = &packet_handler; 290 hci_add_event_handler(&hci_event_callback_registration); 291 hci_register_sco_packet_handler(&packet_handler); 292 293 l2cap_init(); 294 295 sdp_init(); 296 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 297 hsp_hs_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_hs_service_name, 0); 298 sdp_register_service(hsp_service_buffer); 299 300 rfcomm_init(); 301 302 hsp_hs_init(rfcomm_channel_nr); 303 hsp_hs_register_packet_handler(packet_handler); 304 305 #ifdef HAVE_BTSTACK_STDIN 306 btstack_stdin_setup(stdin_process); 307 #endif 308 309 gap_set_local_name("BTstack HSP HS"); 310 gap_discoverable_control(1); 311 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 312 gap_set_class_of_device(0x240404); 313 314 // turn on! 315 hci_power_control(HCI_POWER_ON); 316 return 0; 317 } 318 /* LISTING_END */ 319 /* EXAMPLE_END */ 320