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 // 40 // Minimal test for HSP Headset (!! UNDER DEVELOPMENT !!) 41 // 42 // Requires ENABLE_SCO_OVER_HCI to be defined 43 // 44 // Tested working setups: 45 // - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud 46 // - Ubuntu 14 64-bit, CSR dongle 47 // - OS X 10.11, CSR dongle 48 49 // Broken setups: 50 // - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud 51 // - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio 52 // - looks like bug in select->FTDI driver as it works correct on Linux 53 // 54 // SCO not routed over HCI (yet) 55 // - CSR UART dongle 56 // - Broadcom USB dongle 57 // - Broadcom UART chipset 58 // - .. 59 // ***************************************************************************** 60 61 #include "btstack_config.h" 62 63 #include <stdint.h> 64 #include <stdio.h> 65 #include <stdlib.h> 66 #include <string.h> 67 #include <math.h> 68 69 #include "btstack.h" 70 71 static btstack_packet_callback_registration_t hci_event_callback_registration; 72 73 static uint8_t hsp_service_buffer[150]; 74 static const uint8_t rfcomm_channel_nr = 1; 75 static const char hsp_hs_service_name[] = "Headset Test"; 76 static hci_con_handle_t sco_handle = 0; 77 78 static char hs_cmd_buffer[100]; 79 80 static int phase = 0; 81 82 // input signal: pre-computed sine wave, 160 Hz 83 static const uint8_t sine[] = { 84 0, 15, 31, 46, 61, 74, 86, 97, 107, 114, 85 120, 124, 126, 126, 124, 120, 114, 107, 97, 86, 86 74, 61, 46, 31, 15, 0, 241, 225, 210, 195, 87 182, 170, 159, 149, 142, 136, 132, 130, 130, 132, 88 136, 142, 149, 159, 170, 182, 195, 210, 225, 241, 89 }; 90 91 #if 0 92 // 93 // re-compute sine table for input signal 94 // 95 #include <math.h> 96 #define TABLE_SIZE 50 97 static uint8_t sine[TABLE_SIZE]; 98 static void compute_signal(void){ 99 #define TABLE_SIZE (50) 100 // create sine wave table 101 int i; 102 printf("static const uint8_t sine[] = {"); 103 for( i=0; i<TABLE_SIZE; i++ ) { 104 if ((i % 10) == 0) printf("\n "); 105 sine[i] = (int8_t) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. )); 106 printf("%3u, ", sine[i]); 107 } 108 printf("\n};\n"); 109 } 110 #endif 111 112 static void try_send_sco(void){ 113 if (!sco_handle) return; 114 115 while (hci_can_send_sco_packet_now()) { 116 117 const int sco_packet_length = hci_get_sco_packet_length(); 118 const int sco_payload_length = sco_packet_length - 3; 119 const int frames_per_packet = sco_payload_length; // for 8-bit data. for 16-bit data it's /2 120 121 hci_reserve_packet_buffer(); 122 uint8_t * sco_packet = hci_get_outgoing_packet_buffer(); 123 // set handle + flags 124 little_endian_store_16(sco_packet, 0, sco_handle); 125 // set len 126 sco_packet[2] = sco_payload_length; 127 int i; 128 for (i=0;i<frames_per_packet;i++){ 129 sco_packet[3+i] = sine[phase]; 130 phase++; 131 if (phase >= sizeof(sine)) phase = 0; 132 } 133 hci_send_sco_packet_buffer(sco_packet_length); 134 static int count = 0; 135 count++; 136 if ((count & 15) == 0) printf("Sent %u\n", count); 137 } 138 } 139 140 static void sco_packet_handler(uint8_t packet_type, uint8_t * packet, uint16_t size){ 141 static int count = 0; 142 count++; 143 if ((count & 15)) return; 144 printf("SCO packets %u\n", count); 145 } 146 147 static void packet_handler(uint8_t * event, uint16_t event_size){ 148 149 // printf("Packet handler event 0x%02x\n", event[0]); 150 151 switch (event[0]) { 152 case BTSTACK_EVENT_STATE: 153 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break; 154 printf("Working!\n"); 155 break; 156 case HCI_EVENT_SCO_CAN_SEND_NOW: 157 try_send_sco(); 158 break; 159 case HCI_EVENT_HSP_META: 160 switch (event[2]) { 161 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE: 162 if (hsp_subevent_audio_connection_complete_get_status(event)){ 163 sco_handle = hsp_subevent_audio_connection_complete_get_handle(event); 164 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle); 165 try_send_sco(); 166 } else { 167 printf("Audio connection establishment failed with status %u\n", hsp_subevent_audio_connection_complete_get_status(event)); 168 sco_handle = 0; 169 } 170 break; 171 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE: 172 printf("Audio connection released.\n\n"); 173 sco_handle = 0; 174 break; 175 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED: 176 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event)); 177 break; 178 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED: 179 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event)); 180 break; 181 case HSP_SUBEVENT_RING: 182 printf("HS: RING RING!\n"); 183 break; 184 case HSP_SUBEVENT_AG_INDICATION: { 185 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer)); 186 int size = hsp_subevent_ag_indication_get_value_length(event); 187 if (size >= sizeof(hs_cmd_buffer)-1){ 188 size = sizeof(hs_cmd_buffer)-1; 189 } 190 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size); 191 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer); 192 193 } 194 break; 195 default: 196 printf("event not handled %u\n", event[2]); 197 break; 198 } 199 break; 200 default: 201 break; 202 } 203 } 204 205 static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t * packet, uint16_t size){ 206 packet_handler(packet, size); 207 } 208 209 int btstack_main(int argc, const char * argv[]); 210 int btstack_main(int argc, const char * argv[]){ 211 212 #ifdef TABLE_SIZE 213 compute_signal(); 214 #endif 215 216 gap_discoverable_control(1); 217 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO); 218 gap_set_local_name("BTstack HSP HS"); 219 220 // register for HCI events 221 hci_event_callback_registration.callback = &handle_hci_event; 222 hci_add_event_handler(&hci_event_callback_registration); 223 224 // register for SCO packets 225 hci_register_sco_packet_handler(&sco_packet_handler); 226 227 hsp_hs_init(rfcomm_channel_nr); 228 hsp_hs_register_packet_handler(packet_handler); 229 230 sdp_init(); 231 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer)); 232 hsp_hs_create_sdp_record(hsp_service_buffer, 0x10001, rfcomm_channel_nr, hsp_hs_service_name, 0); 233 sdp_register_service(hsp_service_buffer); 234 235 // turn on! 236 hci_power_control(HCI_POWER_ON); 237 238 return 0; 239 } 240