btstack/src/hci.c

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/*
* Copyright (C) 2009-2012 by Matthias Ringwald
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at btstack@ringwald.ch
*
*/
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/*
* hci.c
*
* Created by Matthias Ringwald on 4/29/09.
*
*/
#include "config.h"
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#include "hci.h"
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#include <stdarg.h>
#include <string.h>
#include <stdio.h>
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#ifndef EMBEDDED
#include <unistd.h> // gethostbyname
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#include <btstack/version.h>
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#endif
#include "btstack_memory.h"
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#include "debug.h"
#include "hci_dump.h"
#include <btstack/hci_cmds.h>
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#define HCI_CONNECTION_TIMEOUT_MS 10000
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#define HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP 11
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#ifdef USE_BLUETOOL
#include "bt_control_iphone.h"
#endif
static void hci_update_scan_enable(void);
// the STACK is here
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static hci_stack_t hci_stack;
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/**
* get connection for a given handle
*
* @return connection OR NULL, if not found
*/
hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){
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linked_item_t *it;
for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){
if ( ((hci_connection_t *) it)->con_handle == con_handle){
return (hci_connection_t *) it;
}
}
return NULL;
}
static void hci_connection_timeout_handler(timer_source_t *timer){
hci_connection_t * connection = (hci_connection_t *) linked_item_get_user(&timer->item);
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#ifdef HAVE_TIME
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struct timeval tv;
gettimeofday(&tv, NULL);
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if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) {
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// connections might be timed out
hci_emit_l2cap_check_timeout(connection);
}
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#endif
#ifdef HAVE_TICK
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if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){
// connections might be timed out
hci_emit_l2cap_check_timeout(connection);
}
#endif
run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS);
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run_loop_add_timer(timer);
}
static void hci_connection_timestamp(hci_connection_t *connection){
#ifdef HAVE_TIME
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gettimeofday(&connection->timestamp, NULL);
#endif
#ifdef HAVE_TICK
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connection->timestamp = embedded_get_ticks();
#endif
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}
/**
* create connection for given address
*
* @return connection OR NULL, if no memory left
*/
static hci_connection_t * create_connection_for_addr(bd_addr_t addr){
hci_connection_t * conn = (hci_connection_t *) btstack_memory_hci_connection_get();
if (!conn) return NULL;
BD_ADDR_COPY(conn->address, addr);
conn->con_handle = 0xffff;
conn->authentication_flags = AUTH_FLAGS_NONE;
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linked_item_set_user(&conn->timeout.item, conn);
conn->timeout.process = hci_connection_timeout_handler;
hci_connection_timestamp(conn);
conn->acl_recombination_length = 0;
conn->acl_recombination_pos = 0;
conn->num_acl_packets_sent = 0;
linked_list_add(&hci_stack.connections, (linked_item_t *) conn);
return conn;
}
/**
* get connection for given address
*
* @return connection OR NULL, if not found
*/
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static hci_connection_t * connection_for_address(bd_addr_t address){
linked_item_t *it;
for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){
if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){
return (hci_connection_t *) it;
}
}
return NULL;
}
inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags);
}
inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){
conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags);
}
/**
* add authentication flags and reset timer
*/
static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){
bd_addr_t addr;
bt_flip_addr(addr, *(bd_addr_t *) bd_addr);
hci_connection_t * conn = connection_for_address(addr);
if (conn) {
connectionSetAuthenticationFlags(conn, flags);
hci_connection_timestamp(conn);
}
}
int hci_authentication_active_for_handle(hci_con_handle_t handle){
hci_connection_t * conn = connection_for_handle(handle);
if (!conn) return 0;
if (!conn->authentication_flags) return 0;
if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0;
if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0;
return 1;
}
void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){
if (hci_stack.remote_device_db) {
hci_stack.remote_device_db->delete_link_key(addr);
}
}
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/**
* count connections
*/
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static int nr_hci_connections(void){
int count = 0;
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linked_item_t *it;
for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++);
return count;
}
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/**
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* Dummy handler called by HCI
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*/
static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
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}
uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){
hci_connection_t * connection = connection_for_handle(handle);
if (!connection) {
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log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle);
return 0;
}
return connection->num_acl_packets_sent;
}
uint8_t hci_number_free_acl_slots(){
uint8_t free_slots = hci_stack.total_num_acl_packets;
linked_item_t *it;
for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){
hci_connection_t * connection = (hci_connection_t *) it;
if (free_slots < connection->num_acl_packets_sent) {
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log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n");
return 0;
}
free_slots -= connection->num_acl_packets_sent;
}
return free_slots;
}
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int hci_can_send_packet_now(uint8_t packet_type){
// check for async hci transport implementations
if (hci_stack.hci_transport->can_send_packet_now){
if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){
return 0;
}
}
// check regular Bluetooth flow control
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switch (packet_type) {
case HCI_ACL_DATA_PACKET:
return hci_number_free_acl_slots();
case HCI_COMMAND_DATA_PACKET:
return hci_stack.num_cmd_packets;
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default:
return 0;
}
}
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int hci_send_acl_packet(uint8_t *packet, int size){
// check for free places on BT module
if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL;
hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);
hci_connection_t *connection = connection_for_handle( con_handle);
if (!connection) return 0;
hci_connection_timestamp(connection);
// count packet
connection->num_acl_packets_sent++;
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// log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent);
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// send packet
int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size);
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return err;
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}
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static void acl_handler(uint8_t *packet, int size){
// get info
hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet);
hci_connection_t *conn = connection_for_handle(con_handle);
uint8_t acl_flags = READ_ACL_FLAGS(packet);
uint16_t acl_length = READ_ACL_LENGTH(packet);
// ignore non-registered handle
if (!conn){
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log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle);
return;
}
// update idle timestamp
hci_connection_timestamp(conn);
// handle different packet types
switch (acl_flags & 0x03) {
case 0x01: // continuation fragment
// sanity check
if (conn->acl_recombination_pos == 0) {
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log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle);
return;
}
// append fragment payload (header already stored)
memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length );
conn->acl_recombination_pos += acl_length;
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// log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length,
// conn->acl_recombination_pos, conn->acl_recombination_length);
// forward complete L2CAP packet if complete.
if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header
hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos);
// reset recombination buffer
conn->acl_recombination_length = 0;
conn->acl_recombination_pos = 0;
}
break;
case 0x02: { // first fragment
// sanity check
if (conn->acl_recombination_pos) {
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log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle);
return;
}
// peek into L2CAP packet!
uint16_t l2cap_length = READ_L2CAP_LENGTH( packet );
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// log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length);
// compare fragment size to L2CAP packet size
if (acl_length >= l2cap_length + 4){
// forward fragment as L2CAP packet
hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4);
} else {
// store first fragment and tweak acl length for complete package
memcpy(conn->acl_recombination_buffer, packet, acl_length + 4);
conn->acl_recombination_pos = acl_length + 4;
conn->acl_recombination_length = l2cap_length;
bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4);
}
break;
}
default:
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log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03);
return;
}
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// execute main loop
hci_run();
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}
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static void hci_shutdown_connection(hci_connection_t *conn){
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log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address));
// cancel all l2cap connections
hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host
run_loop_remove_timer(&conn->timeout);
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linked_list_remove(&hci_stack.connections, (linked_item_t *) conn);
btstack_memory_hci_connection_free( conn );
// now it's gone
hci_emit_nr_connections_changed();
}
static const uint16_t packet_type_sizes[] = {
0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE,
HCI_ACL_DH1_SIZE, 0, 0, 0,
HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE,
HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE
};
static const uint8_t packet_type_feature_requirement_bit[] = {
0, // 3 slot packets
1, // 5 slot packets
25, // EDR 2 mpbs
26, // EDR 3 mbps
39, // 3 slot EDR packts
40, // 5 slot EDR packet
};
static const uint16_t packet_type_feature_packet_mask[] = {
0x0f00, // 3 slot packets
0xf000, // 5 slot packets
0x1102, // EDR 2 mpbs
0x2204, // EDR 3 mbps
0x0300, // 3 slot EDR packts
0x3000, // 5 slot EDR packet
};
static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){
// enable packet types based on size
uint16_t packet_types = 0;
int i;
for (i=0;i<16;i++){
if (packet_type_sizes[i] == 0) continue;
if (packet_type_sizes[i] <= buffer_size){
packet_types |= 1 << i;
}
}
// disable packet types due to missing local supported features
for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){
int bit_idx = packet_type_feature_requirement_bit[i];
int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0;
if (feature_set) continue;
log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]);
packet_types &= ~packet_type_feature_packet_mask[i];
}
// flip bits for "may not be used"
packet_types ^= 0x3306;
return packet_types;
}
uint16_t hci_usable_acl_packet_types(void){
return hci_stack.packet_types;
}
uint8_t* hci_get_outgoing_acl_packet_buffer(void){
// hci packet buffer is >= acl data packet length
return hci_stack.hci_packet_buffer;
}
uint16_t hci_max_acl_data_packet_length(void){
return hci_stack.acl_data_packet_length;
}
int hci_ssp_supported(void){
// No 51, byte 6, bit 3
return (hci_stack.local_supported_features[6] & (1 << 3)) != 0;
}
int hci_classic_supported(void){
// No 37, byte 4, bit 5, = No BR/EDR Support
return (hci_stack.local_supported_features[4] & (1 << 5)) == 0;
}
int hci_le_supported(void){
// No 37, byte 4, bit 6 = LE Supported (Controller)
#ifdef HAVE_BLE
return (hci_stack.local_supported_features[4] & (1 << 6)) != 0;
#else
return 0;
#endif
}
// avoid huge local variables
#ifndef EMBEDDED
static device_name_t device_name;
#endif
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static void event_handler(uint8_t *packet, int size){
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bd_addr_t addr;
uint8_t link_type;
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hci_con_handle_t handle;
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hci_connection_t * conn;
int i;
// printf("HCI:EVENT:%02x\n", packet[0]);
switch (packet[0]) {
case HCI_EVENT_COMMAND_COMPLETE:
// get num cmd packets
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// log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]);
hci_stack.num_cmd_packets = packet[2];
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if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){
// from offset 5
// status
// "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets"
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hci_stack.acl_data_packet_length = READ_BT_16(packet, 6);
// ignore: SCO data packet len (8)
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hci_stack.total_num_acl_packets = packet[9];
// ignore: total num SCO packets
if (hci_stack.state == HCI_STATE_INITIALIZING){
// determine usable ACL payload size
if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){
hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE;
}
log_info("hci_read_buffer_size: used size %u, count %u\n",
hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets);
}
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}
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// Dump local address
if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)) {
bt_flip_addr(hci_stack.local_bd_addr, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1]);
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log_info("Local Address, Status: 0x%02x: Addr: %s\n",
packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack.local_bd_addr));
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}
if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){
hci_emit_discoverable_enabled(hci_stack.discoverable);
}
// Note: HCI init checks
if (COMMAND_COMPLETE_EVENT(packet, hci_read_local_supported_features)){
memcpy(hci_stack.local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 8);
log_info("Local Supported Features: 0x%02x%02x%02x%02x%02x%02x%02x%02x",
hci_stack.local_supported_features[0], hci_stack.local_supported_features[1],
hci_stack.local_supported_features[2], hci_stack.local_supported_features[3],
hci_stack.local_supported_features[4], hci_stack.local_supported_features[5],
hci_stack.local_supported_features[6], hci_stack.local_supported_features[7]);
// determine usable ACL packet types based buffer size and supported features
hci_stack.packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(hci_stack.acl_data_packet_length, &hci_stack.local_supported_features[0]);
log_info("packet types %04x", hci_stack.packet_types);
// Classic/LE
log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported());
}
break;
case HCI_EVENT_COMMAND_STATUS:
// get num cmd packets
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// log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]);
hci_stack.num_cmd_packets = packet[3];
break;
case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:
for (i=0; i<packet[2];i++){
handle = READ_BT_16(packet, 3 + 2*i);
uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i);
conn = connection_for_handle(handle);
if (!conn){
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log_error("hci_number_completed_packet lists unused con handle %u\n", handle);
continue;
}
conn->num_acl_packets_sent -= num_packets;
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// log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent);
}
break;
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case HCI_EVENT_CONNECTION_REQUEST:
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bt_flip_addr(addr, &packet[2]);
// TODO: eval COD 8-10
link_type = packet[11];
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log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type);
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if (link_type == 1) { // ACL
conn = connection_for_address(addr);
if (!conn) {
conn = create_connection_for_addr(addr);
}
if (!conn) {
// CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D)
hci_stack.decline_reason = 0x0d;
BD_ADDR_COPY(hci_stack.decline_addr, addr);
break;
}
conn->state = RECEIVED_CONNECTION_REQUEST;
hci_run();
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} else {
// SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A)
hci_stack.decline_reason = 0x0a;
BD_ADDR_COPY(hci_stack.decline_addr, addr);
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}
break;
case HCI_EVENT_CONNECTION_COMPLETE:
// Connection management
bt_flip_addr(addr, &packet[5]);
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log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr));
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conn = connection_for_address(addr);
if (conn) {
if (!packet[2]){
conn->state = OPEN;
conn->con_handle = READ_BT_16(packet, 3);
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// restart timer
run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
run_loop_add_timer(&conn->timeout);
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log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address));
hci_emit_nr_connections_changed();
} else {
// connection failed, remove entry
linked_list_remove(&hci_stack.connections, (linked_item_t *) conn);
btstack_memory_hci_connection_free( conn );
// if authentication error, also delete link key
if (packet[2] == 0x05) {
hci_drop_link_key_for_bd_addr(&addr);
}
}
}
break;
case HCI_EVENT_LINK_KEY_REQUEST:
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log_info("HCI_EVENT_LINK_KEY_REQUEST\n");
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST);
if (!hci_stack.remote_device_db) break;
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST);
2011-06-21 20:28:09 +00:00
hci_run();
// request handled by hci_run() as HANDLE_LINK_KEY_REQUEST gets set
return;
case HCI_EVENT_LINK_KEY_NOTIFICATION:
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION);
if (!hci_stack.remote_device_db) break;
bt_flip_addr(addr, &packet[2]);
2010-09-03 18:40:27 +00:00
hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]);
// still forward event to allow dismiss of pairing dialog
break;
case HCI_EVENT_PIN_CODE_REQUEST:
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST);
// PIN CODE REQUEST means the link key request didn't succee -> delete stored link key
if (!hci_stack.remote_device_db) break;
bt_flip_addr(addr, &packet[2]);
hci_stack.remote_device_db->delete_link_key(&addr);
break;
case HCI_EVENT_IO_CAPABILITY_REQUEST:
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_IO_CAPABILITIES_REQUEST);
if (hci_stack.ssp_io_capability == SSP_IO_CAPABILITY_UNKNOWN) break;
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_REPLY);
break;
case HCI_EVENT_USER_CONFIRMATION_REQUEST:
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_USER_CONFIRM_REQUEST);
if (!hci_stack.ssp_auto_accept) break;
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_CONFIRM_REPLY);
break;
case HCI_EVENT_USER_PASSKEY_REQUEST:
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_USER_PASSKEY_REQUEST);
if (!hci_stack.ssp_auto_accept) break;
hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_PASSKEY_REPLY);
break;
#ifndef EMBEDDED
case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
if (!hci_stack.remote_device_db) break;
if (packet[2]) break; // status not ok
bt_flip_addr(addr, &packet[3]);
// fix for invalid remote names - terminate on 0xff
for (i=0; i<248;i++){
if (packet[9+i] == 0xff){
packet[9+i] = 0;
break;
2011-06-17 20:44:46 +00:00
}
}
memset(&device_name, 0, sizeof(device_name_t));
strncpy((char*) device_name, (char*) &packet[9], 248);
hci_stack.remote_device_db->put_name(&addr, &device_name);
break;
case HCI_EVENT_INQUIRY_RESULT:
case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
if (!hci_stack.remote_device_db) break;
// first send inq result packet
hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size);
// then send cached remote names
for (i=0; i<packet[2];i++){
bt_flip_addr(addr, &packet[3+i*6]);
if (hci_stack.remote_device_db->get_name(&addr, &device_name)){
hci_emit_remote_name_cached(&addr, &device_name);
}
}
return;
#endif
case HCI_EVENT_DISCONNECTION_COMPLETE:
if (!packet[2]){
handle = READ_BT_16(packet, 3);
hci_connection_t * conn = connection_for_handle(handle);
if (conn) {
hci_shutdown_connection(conn);
}
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}
break;
case HCI_EVENT_HARDWARE_ERROR:
if(hci_stack.control->hw_error){
(*hci_stack.control->hw_error)();
}
break;
#ifdef HAVE_BLE
case HCI_EVENT_LE_META:
switch (packet[2]) {
case HCI_SUBEVENT_LE_CONNECTION_COMPLETE:
// Connection management
bt_flip_addr(addr, &packet[8]);
log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr));
// LE connections are auto-accepted, so just create a connection if there isn't one already
conn = connection_for_address(addr);
if (packet[3]){
if (conn){
// outgoing connection failed, remove entry
linked_list_remove(&hci_stack.connections, (linked_item_t *) conn);
btstack_memory_hci_connection_free( conn );
}
// if authentication error, also delete link key
if (packet[3] == 0x05) {
hci_drop_link_key_for_bd_addr(&addr);
}
break;
}
if (!conn){
conn = create_connection_for_addr(addr);
}
if (!conn){
// no memory
break;
}
conn->state = OPEN;
conn->con_handle = READ_BT_16(packet, 4);
// TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock
// restart timer
// run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS);
// run_loop_add_timer(&conn->timeout);
log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address));
hci_emit_nr_connections_changed();
break;
default:
break;
}
break;
#endif
default:
break;
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}
// handle BT initialization
if (hci_stack.state == HCI_STATE_INITIALIZING){
// handle H4 synchronization loss on restart
// if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){
// hci_stack.substate = 0;
// }
// handle normal init sequence
if (hci_stack.substate % 2){
// odd: waiting for event
if (packet[0] == HCI_EVENT_COMMAND_COMPLETE || packet[0] == HCI_EVENT_COMMAND_STATUS){
hci_stack.substate++;
}
}
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}
// help with BT sleep
if (hci_stack.state == HCI_STATE_FALLING_ASLEEP
&& hci_stack.substate == 1
&& COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){
hci_stack.substate++;
}
hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size);
2009-06-06 19:00:32 +00:00
// execute main loop
hci_run();
2009-05-17 20:32:14 +00:00
}
static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){
switch (packet_type) {
case HCI_EVENT_PACKET:
event_handler(packet, size);
break;
case HCI_ACL_DATA_PACKET:
acl_handler(packet, size);
break;
default:
break;
}
}
/** Register HCI packet handlers */
void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){
hci_stack.packet_handler = handler;
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}
void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db){
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// reference to use transport layer implementation
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hci_stack.hci_transport = transport;
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// references to used control implementation
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hci_stack.control = control;
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// reference to used config
hci_stack.config = config;
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// no connections yet
hci_stack.connections = NULL;
hci_stack.discoverable = 0;
hci_stack.connectable = 0;
// no pending cmds
hci_stack.decline_reason = 0;
hci_stack.new_scan_enable_value = 0xff;
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// higher level handler
hci_stack.packet_handler = dummy_handler;
// store and open remote device db
hci_stack.remote_device_db = remote_device_db;
if (hci_stack.remote_device_db) {
hci_stack.remote_device_db->open();
}
// max acl payload size defined in config.h
hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE;
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// register packet handlers with transport
transport->register_packet_handler(&packet_handler);
hci_stack.state = HCI_STATE_OFF;
// class of device
hci_stack.class_of_device = 0x007a020c; // Smartphone
// Secure Simple Pairing
hci_stack.ssp_enable = 0;
hci_stack.ssp_io_capability = SSP_IO_CAPABILITY_UNKNOWN;
hci_stack.ssp_authentication_requirement = 0;
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}
void hci_close(){
// close remote device db
if (hci_stack.remote_device_db) {
hci_stack.remote_device_db->close();
}
while (hci_stack.connections) {
hci_shutdown_connection((hci_connection_t *) hci_stack.connections);
}
hci_power_control(HCI_POWER_OFF);
}
// State-Module-Driver overview
// state module low-level
// HCI_STATE_OFF off close
// HCI_STATE_INITIALIZING, on open
// HCI_STATE_WORKING, on open
// HCI_STATE_HALTING, on open
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// HCI_STATE_SLEEPING, off/sleep close
// HCI_STATE_FALLING_ASLEEP on open
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static int hci_power_control_on(void){
// power on
int err = 0;
if (hci_stack.control && hci_stack.control->on){
err = (*hci_stack.control->on)(hci_stack.config);
}
if (err){
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log_error( "POWER_ON failed\n");
hci_emit_hci_open_failed();
return err;
}
// open low-level device
err = hci_stack.hci_transport->open(hci_stack.config);
if (err){
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log_error( "HCI_INIT failed, turning Bluetooth off again\n");
if (hci_stack.control && hci_stack.control->off){
(*hci_stack.control->off)(hci_stack.config);
}
hci_emit_hci_open_failed();
return err;
}
return 0;
}
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static void hci_power_control_off(void){
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log_info("hci_power_control_off\n");
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// close low-level device
hci_stack.hci_transport->close(hci_stack.config);
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log_info("hci_power_control_off - hci_transport closed\n");
// power off
if (hci_stack.control && hci_stack.control->off){
(*hci_stack.control->off)(hci_stack.config);
}
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2011-07-22 18:31:02 +00:00
log_info("hci_power_control_off - control closed\n");
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2011-01-08 23:03:00 +00:00
hci_stack.state = HCI_STATE_OFF;
}
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static void hci_power_control_sleep(void){
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log_info("hci_power_control_sleep\n");
#if 0
// don't close serial port during sleep
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// close low-level device
hci_stack.hci_transport->close(hci_stack.config);
#endif
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// sleep mode
2011-01-09 16:19:42 +00:00
if (hci_stack.control && hci_stack.control->sleep){
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(*hci_stack.control->sleep)(hci_stack.config);
}
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hci_stack.state = HCI_STATE_SLEEPING;
}
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static int hci_power_control_wake(void){
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log_info("hci_power_control_wake\n");
// wake on
if (hci_stack.control && hci_stack.control->wake){
(*hci_stack.control->wake)(hci_stack.config);
}
#if 0
// open low-level device
int err = hci_stack.hci_transport->open(hci_stack.config);
if (err){
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log_error( "HCI_INIT failed, turning Bluetooth off again\n");
if (hci_stack.control && hci_stack.control->off){
(*hci_stack.control->off)(hci_stack.config);
}
hci_emit_hci_open_failed();
return err;
}
#endif
return 0;
}
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int hci_power_control(HCI_POWER_MODE power_mode){
2011-01-07 22:20:37 +00:00
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log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state);
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int err = 0;
switch (hci_stack.state){
case HCI_STATE_OFF:
switch (power_mode){
case HCI_POWER_ON:
err = hci_power_control_on();
if (err) return err;
// set up state machine
hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent
hci_stack.state = HCI_STATE_INITIALIZING;
hci_stack.substate = 0;
break;
case HCI_POWER_OFF:
// do nothing
break;
case HCI_POWER_SLEEP:
// do nothing (with SLEEP == OFF)
break;
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}
break;
case HCI_STATE_INITIALIZING:
switch (power_mode){
case HCI_POWER_ON:
// do nothing
break;
case HCI_POWER_OFF:
// no connections yet, just turn it off
hci_power_control_off();
break;
case HCI_POWER_SLEEP:
// no connections yet, just turn it off
2011-01-08 23:03:00 +00:00
hci_power_control_sleep();
break;
}
break;
case HCI_STATE_WORKING:
switch (power_mode){
case HCI_POWER_ON:
// do nothing
break;
case HCI_POWER_OFF:
// see hci_run
hci_stack.state = HCI_STATE_HALTING;
break;
case HCI_POWER_SLEEP:
// see hci_run
hci_stack.state = HCI_STATE_FALLING_ASLEEP;
hci_stack.substate = 0;
break;
}
break;
case HCI_STATE_HALTING:
switch (power_mode){
case HCI_POWER_ON:
// set up state machine
hci_stack.state = HCI_STATE_INITIALIZING;
hci_stack.substate = 0;
break;
case HCI_POWER_OFF:
// do nothing
break;
case HCI_POWER_SLEEP:
// see hci_run
hci_stack.state = HCI_STATE_FALLING_ASLEEP;
hci_stack.substate = 0;
break;
}
break;
case HCI_STATE_FALLING_ASLEEP:
switch (power_mode){
case HCI_POWER_ON:
#if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
// nothing to do, if H4 supports power management
if (bt_control_iphone_power_management_enabled()){
hci_stack.state = HCI_STATE_INITIALIZING;
2013-08-30 14:44:36 +00:00
hci_stack.substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP;
break;
}
#endif
// set up state machine
hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent
hci_stack.state = HCI_STATE_INITIALIZING;
hci_stack.substate = 0;
break;
case HCI_POWER_OFF:
// see hci_run
hci_stack.state = HCI_STATE_HALTING;
break;
case HCI_POWER_SLEEP:
// do nothing
break;
}
break;
case HCI_STATE_SLEEPING:
switch (power_mode){
case HCI_POWER_ON:
#if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
// nothing to do, if H4 supports power management
if (bt_control_iphone_power_management_enabled()){
hci_stack.state = HCI_STATE_INITIALIZING;
2013-08-30 14:44:36 +00:00
hci_stack.substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP;
hci_update_scan_enable();
break;
}
#endif
2011-01-09 16:19:42 +00:00
err = hci_power_control_wake();
if (err) return err;
// set up state machine
hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent
hci_stack.state = HCI_STATE_INITIALIZING;
hci_stack.substate = 0;
break;
case HCI_POWER_OFF:
hci_stack.state = HCI_STATE_HALTING;
break;
case HCI_POWER_SLEEP:
// do nothing
break;
}
break;
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}
// create internal event
hci_emit_state();
// trigger next/first action
hci_run();
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return 0;
2009-04-29 22:00:24 +00:00
}
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static void hci_update_scan_enable(void){
// 2 = page scan, 1 = inq scan
hci_stack.new_scan_enable_value = hci_stack.connectable << 1 | hci_stack.discoverable;
hci_run();
}
void hci_discoverable_control(uint8_t enable){
if (enable) enable = 1; // normalize argument
if (hci_stack.discoverable == enable){
hci_emit_discoverable_enabled(hci_stack.discoverable);
return;
}
hci_stack.discoverable = enable;
hci_update_scan_enable();
}
void hci_connectable_control(uint8_t enable){
if (enable) enable = 1; // normalize argument
// don't emit event
if (hci_stack.connectable == enable) return;
hci_stack.connectable = enable;
hci_update_scan_enable();
}
void hci_run(){
hci_connection_t * connection;
linked_item_t * it;
if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return;
// global/non-connection oriented commands
// decline incoming connections
if (hci_stack.decline_reason){
uint8_t reason = hci_stack.decline_reason;
hci_stack.decline_reason = 0;
hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason);
return;
}
// send scan enable
if (hci_stack.state == HCI_STATE_WORKING && hci_stack.new_scan_enable_value != 0xff && hci_classic_supported()){
hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value);
hci_stack.new_scan_enable_value = 0xff;
return;
}
// send pending HCI commands
for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){
connection = (hci_connection_t *) it;
if (connection->state == RECEIVED_CONNECTION_REQUEST){
2011-07-22 18:31:02 +00:00
log_info("sending hci_accept_connection_request\n");
hci_send_cmd(&hci_accept_connection_request, connection->address, 1);
connection->state = ACCEPTED_CONNECTION_REQUEST;
return;
}
if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){
link_key_t link_key;
2011-07-22 18:31:02 +00:00
log_info("responding to link key request\n");
if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){
hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key);
} else {
hci_send_cmd(&hci_link_key_request_negative_reply, connection->address);
}
connectionClearAuthenticationFlags(connection, HANDLE_LINK_KEY_REQUEST);
return;
}
if (connection->authentication_flags & SEND_IO_CAPABILITIES_REPLY){
hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack.ssp_io_capability, NULL, hci_stack.ssp_authentication_requirement);
connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_REPLY);
return;
}
if (connection->authentication_flags & SEND_USER_CONFIRM_REPLY){
hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address);
connectionClearAuthenticationFlags(connection, SEND_USER_CONFIRM_REPLY);
return;
}
if (connection->authentication_flags & SEND_USER_PASSKEY_REPLY){
hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000);
connectionClearAuthenticationFlags(connection, SEND_USER_PASSKEY_REPLY);
return;
}
}
switch (hci_stack.state){
case HCI_STATE_INITIALIZING:
2011-07-22 18:31:02 +00:00
// log_info("hci_init: substate %u\n", hci_stack.substate);
if (hci_stack.substate % 2) {
// odd: waiting for command completion
return;
}
2010-08-05 20:13:02 +00:00
switch (hci_stack.substate >> 1){
case 0: // RESET
hci_send_cmd(&hci_reset);
if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){
// skip baud change
hci_stack.substate = 4; // >> 1 = 2
}
break;
case 1: // SEND BAUD CHANGE
hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer);
hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]);
break;
case 2: // LOCAL BAUD CHANGE
hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main);
hci_stack.substate += 2;
// break missing here for fall through
case 3:
2010-08-05 20:13:02 +00:00
// custom initialization
if (hci_stack.control && hci_stack.control->next_cmd){
int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer);
if (valid_cmd){
int size = 3 + hci_stack.hci_packet_buffer[2];
hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size);
hci_stack.substate = 4; // more init commands
2010-08-05 20:13:02 +00:00
break;
}
log_info("hci_run: init script done\n\r");
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}
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// otherwise continue
hci_send_cmd(&hci_read_bd_addr);
break;
case 4:
2010-07-25 15:11:33 +00:00
hci_send_cmd(&hci_read_buffer_size);
break;
case 5:
hci_send_cmd(&hci_read_local_supported_features);
break;
case 6:
hci_send_cmd(&hci_set_event_mask,0xffffffff, 0xFFFFFFFF); ///0x1DFFFFFF
// skip Classic init commands for LE only chipsets
if (hci_classic_supported()){
if (!hci_ssp_supported()){
hci_stack.substate = 7 << 1; // skip hci_write_simple_pairing_mode
}
} else {
hci_stack.substate = 11 << 1; // skip all classic command
}
break;
case 7:
hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack.ssp_enable);
break;
case 8:
// ca. 15 sec
hci_send_cmd(&hci_write_page_timeout, 0x6000);
break;
case 9:
hci_send_cmd(&hci_write_class_of_device, hci_stack.class_of_device);
break;
case 10:
if (hci_stack.local_name){
hci_send_cmd(&hci_write_local_name, hci_stack.local_name);
} else {
char hostname[30];
#ifdef EMBEDDED
// BTstack-11:22:33:44:55:66
strcpy(hostname, "BTstack ");
strcat(hostname, bd_addr_to_str(hci_stack.local_bd_addr));
printf("---> Name %s\n", hostname);
#else
// hostname for POSIX systems
gethostname(hostname, 30);
hostname[29] = '\0';
#endif
hci_send_cmd(&hci_write_local_name, hostname);
}
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break;
case 11:
hci_send_cmd(&hci_write_scan_enable, (hci_stack.connectable << 1) | hci_stack.discoverable); // page scan
break;
case 12:
// done.
hci_stack.state = HCI_STATE_WORKING;
hci_emit_state();
break;
default:
break;
}
hci_stack.substate++;
break;
case HCI_STATE_HALTING:
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log_info("HCI_STATE_HALTING\n");
// close all open connections
connection = (hci_connection_t *) hci_stack.connections;
if (connection){
// send disconnect
if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return;
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log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle);
hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection
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// send disconnected event right away - causes higher layer connections to get closed, too.
hci_shutdown_connection(connection);
return;
}
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log_info("HCI_STATE_HALTING, calling off\n");
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// switch mode
hci_power_control_off();
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log_info("HCI_STATE_HALTING, emitting state\n");
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hci_emit_state();
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log_info("HCI_STATE_HALTING, done\n");
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break;
case HCI_STATE_FALLING_ASLEEP:
switch(hci_stack.substate) {
case 0:
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log_info("HCI_STATE_FALLING_ASLEEP\n");
// close all open connections
connection = (hci_connection_t *) hci_stack.connections;
#if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
// don't close connections, if H4 supports power management
if (bt_control_iphone_power_management_enabled()){
connection = NULL;
}
#endif
if (connection){
// send disconnect
if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return;
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log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle);
hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection
// send disconnected event right away - causes higher layer connections to get closed, too.
hci_shutdown_connection(connection);
return;
}
if (hci_classic_supported()){
// disable page and inquiry scan
if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return;
log_info("HCI_STATE_HALTING, disabling inq scans\n");
hci_send_cmd(&hci_write_scan_enable, hci_stack.connectable << 1); // drop inquiry scan but keep page scan
// continue in next sub state
hci_stack.substate++;
break;
}
// fall through for ble-only chips
case 2:
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log_info("HCI_STATE_HALTING, calling sleep\n");
#if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL)
// don't actually go to sleep, if H4 supports power management
if (bt_control_iphone_power_management_enabled()){
// SLEEP MODE reached
hci_stack.state = HCI_STATE_SLEEPING;
hci_emit_state();
break;
}
#endif
// switch mode
hci_power_control_sleep(); // changes hci_stack.state to SLEEP
hci_emit_state();
break;
default:
break;
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}
break;
default:
break;
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}
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}
int hci_send_cmd_packet(uint8_t *packet, int size){
bd_addr_t addr;
hci_connection_t * conn;
// house-keeping
// create_connection?
if (IS_COMMAND(packet, hci_create_connection)){
bt_flip_addr(addr, &packet[3]);
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log_info("Create_connection to %s\n", bd_addr_to_str(addr));
conn = connection_for_address(addr);
if (conn) {
// if connection exists
if (conn->state == OPEN) {
// and OPEN, emit connection complete command
hci_emit_connection_complete(conn, 0);
}
// otherwise, just ignore as it is already in the open process
return 0; // don't sent packet to controller
}
// create connection struct and register, state = SENT_CREATE_CONNECTION
conn = create_connection_for_addr(addr);
if (!conn){
// notify client that alloc failed
hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED);
return 0; // don't sent packet to controller
}
conn->state = SENT_CREATE_CONNECTION;
}
if (IS_COMMAND(packet, hci_link_key_request_reply)){
hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY);
}
if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){
hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST);
}
if (IS_COMMAND(packet, hci_pin_code_request_reply)){
hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY);
}
if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){
hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY);
}
if (IS_COMMAND(packet, hci_delete_stored_link_key)){
if (hci_stack.remote_device_db){
bt_flip_addr(addr, &packet[3]);
hci_stack.remote_device_db->delete_link_key(&addr);
}
}
hci_stack.num_cmd_packets--;
return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size);
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}
// Configure Secure Simple Pairing
// enable will enable SSP during init
void hci_ssp_set_enable(int enable){
hci_stack.ssp_enable = enable;
}
// if set, BTstack will respond to io capability request using authentication requirement
void hci_ssp_set_io_capability(int io_capability){
hci_stack.ssp_io_capability = io_capability;
}
void hci_ssp_set_authentication_requirement(int authentication_requirement){
hci_stack.ssp_authentication_requirement = authentication_requirement;
}
// if set, BTstack will confirm a numberic comparion and enter '000000' if requested
void hci_ssp_set_auto_accept(int auto_accept){
hci_stack.ssp_auto_accept = auto_accept;
}
/**
* pre: numcmds >= 0 - it's allowed to send a command to the controller
*/
int hci_send_cmd(const hci_cmd_t *cmd, ...){
va_list argptr;
va_start(argptr, cmd);
uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr);
va_end(argptr);
return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size);
}
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// Create various non-HCI events.
// TODO: generalize, use table similar to hci_create_command
void hci_emit_state(){
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log_info("BTSTACK_EVENT_STATE %u", hci_stack.state);
uint8_t event[3];
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event[0] = BTSTACK_EVENT_STATE;
event[1] = sizeof(event) - 2;
event[2] = hci_stack.state;
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}
void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){
uint8_t event[13];
event[0] = HCI_EVENT_CONNECTION_COMPLETE;
event[1] = sizeof(event) - 2;
event[2] = status;
bt_store_16(event, 3, conn->con_handle);
bt_flip_addr(&event[5], conn->address);
event[11] = 1; // ACL connection
event[12] = 0; // encryption disabled
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}
void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){
uint8_t event[6];
event[0] = HCI_EVENT_DISCONNECTION_COMPLETE;
event[1] = sizeof(event) - 2;
event[2] = 0; // status = OK
bt_store_16(event, 3, handle);
event[5] = reason;
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}
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void hci_emit_l2cap_check_timeout(hci_connection_t *conn){
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log_info("L2CAP_EVENT_TIMEOUT_CHECK");
uint8_t event[4];
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event[0] = L2CAP_EVENT_TIMEOUT_CHECK;
event[1] = sizeof(event) - 2;
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bt_store_16(event, 2, conn->con_handle);
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
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}
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void hci_emit_nr_connections_changed(){
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log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections());
uint8_t event[3];
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event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED;
event[1] = sizeof(event) - 2;
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event[2] = nr_hci_connections();
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
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}
void hci_emit_hci_open_failed(){
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log_info("BTSTACK_EVENT_POWERON_FAILED");
uint8_t event[2];
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event[0] = BTSTACK_EVENT_POWERON_FAILED;
event[1] = sizeof(event) - 2;
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
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}
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#ifndef EMBEDDED
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void hci_emit_btstack_version() {
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log_info("BTSTACK_EVENT_VERSION %u.%u", BTSTACK_MAJOR, BTSTACK_MINOR);
uint8_t event[6];
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event[0] = BTSTACK_EVENT_VERSION;
event[1] = sizeof(event) - 2;
event[2] = BTSTACK_MAJOR;
event[3] = BTSTACK_MINOR;
bt_store_16(event, 4, BTSTACK_REVISION);
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}
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#endif
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void hci_emit_system_bluetooth_enabled(uint8_t enabled){
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log_info("BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED %u", enabled);
uint8_t event[3];
event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED;
event[1] = sizeof(event) - 2;
event[2] = enabled;
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}
void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){
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uint8_t event[2+1+6+248+1]; // +1 for \0 in log_info
event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED;
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event[1] = sizeof(event) - 2 - 1;
event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE
bt_flip_addr(&event[3], *addr);
memcpy(&event[9], name, 248);
2012-07-30 18:58:08 +00:00
event[9+248] = 0; // assert \0 for log_info
log_info("BTSTACK_EVENT_REMOTE_NAME_CACHED %s = '%s'", bd_addr_to_str(*addr), &event[9]);
hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)-1);
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)-1);
}
void hci_emit_discoverable_enabled(uint8_t enabled){
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log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled);
uint8_t event[3];
event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED;
event[1] = sizeof(event) - 2;
event[2] = enabled;
hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event));
hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event));
}