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BluetoothConnection.cpp
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BluetoothConnection.cpp
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/* USB EHCI Host for Teensy 3.6
* Copyright 2017 Paul Stoffregen (paul@pjrc.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* information about the BlueTooth HCI comes from logic analyzer captures
* plus... http://affon.narod.ru/BT/bluetooth_app_c10.pdf
*/
//=============================================================================
// Bluetooth connections code
//=============================================================================
#include <Arduino.h>
#include "USBHost_t36.h" // Read this header first for key info
#include "utility/bt_defines.h"
#define print USBHost::print_
#define println USBHost::println_//#define DEBUG_BT
//#define DEBUG_BT
//#define DEBUG_BT_VERBOSE
#ifndef DEBUG_BT
#undef DEBUG_BT_VERBOSE
void inline DBGPrintf(...) {};
#else
#define DBGPrintf USBHDBGSerial.printf
#endif
#ifndef DEBUG_BT_VERBOSE
void inline VDBGPrintf(...) {};
#else
#define VDBGPrintf USBHDBGSerial.printf
#endif
// This is a list of all the drivers inherited from the BTHIDInput class.
// Unlike the list of USBDriver (managed in enumeration.cpp), drivers stay
// on this list even when they have claimed a top level collection.
BluetoothConnection *BluetoothConnection::s_first_ = NULL;
// When a new top level collection is found, this function asks drivers
// if they wish to claim it. The driver taking ownership of the
// collection is returned, or NULL if no driver wants it.
//=============================================================================
// initialize the connection data
//=============================================================================
void BluetoothConnection::initializeConnection(BluetoothController *btController, uint8_t bdaddr[6], uint32_t class_of_device,
bool inquire_mode)
{
device_driver_ = nullptr;
btController_ = btController; // back pointer to main object
// lets setup a connection for this timer
bt_connection_timer_.init(btController_); // so it will use the main device
bt_connection_timer_.pointer = (void*)this; // but rememember us.
connection_rxid_ = 0;
control_dcid_ = 0x70;
interrupt_dcid_ = 0x71;
sdp_dcid_ = 0x40;
connection_complete_ = 0;
connection_started_ = false;
connection_started_by_timer_ = false;
//if (!connection_started_) {
// connection_started_ = true;
// btController_->setTimer(nullptr, 0); // clear out timer
//}
use_hid_protocol_ = false;
sdp_connected_ = false;
supports_SSP_ = false;
pending_control_tx_ = 0;
inquire_mode_ = inquire_mode;
find_driver_type_1_called_ = false; // bugbug should combine:
// We need to save away the BDADDR and class link type?
for (uint8_t i = 0; i < 6; i++) device_bdaddr_[i] = bdaddr[i];
device_class_ = class_of_device;
}
void BluetoothConnection::remoteNameComplete(const uint8_t *device_name)
{
// hack for now remember the device_name if we have one
if (device_name)strcpy((char*)remote_name_, (const char *)device_name);
else remote_name_[0] = 0; // null terminated string.
device_driver_ = find_driver(device_name, 0);
}
//=============================================================================
// Find a driver
//=============================================================================
BTHIDInput * BluetoothConnection::find_driver(const uint8_t *remoteName, int type)
{
if (type == 1) find_driver_type_1_called_ = true;
DBGPrintf("BluetoothController::find_driver(%x) type: %d\n", device_class_, type);
if (device_class_ & 0x2000) DBGPrintf(" (0x2000)Limited Discoverable Mode\n");
DBGPrintf(" (0x500)Peripheral device\n");
if (device_class_ & 0x80) DBGPrintf(" Mouse\n");
if (device_class_ & 0x40) DBGPrintf(" Keyboard\n");
switch (device_class_ & 0x3c) {
case 4: DBGPrintf(" Joystick\n"); break;
case 8: DBGPrintf(" Gamepad\n"); break;
case 0xc: DBGPrintf(" Remote Control\n"); break;
}
check_for_hid_descriptor_ = false;
BTHIDInput *driver = BluetoothController::available_bthid_drivers_list;
while (driver) {
DBGPrintf(" driver %x\n", (uint32_t)driver);
// should make const all the way through
hidclaim_t claim_type = driver->claim_bluetooth(this, device_class_, (uint8_t*)remoteName, type);
if (claim_type == CLAIM_INTERFACE) {
check_for_hid_descriptor_ = false;
DBGPrintf(" *** Claimed ***\n");
return driver;
} else if (claim_type == CLAIM_REPORT) {
DBGPrintf(" *** Check for HID ***\n");
check_for_hid_descriptor_ = true;
}
driver = driver->next;
}
return NULL;
}
//=============================================================================
// Handle the rx2_
//=============================================================================
void BluetoothConnection::rx2_data(uint8_t *rx2buf) // called from rx2_data of BluetoothController
{
// need to detect if these are L2CAP or SDP or ...
uint16_t data_len = rx2buf[4] + ((uint16_t)rx2buf[5] << 8);
uint16_t dcid = rx2buf[6] + ((uint16_t)rx2buf[7] << 8);
//DBGPrintf("@@@@@@ SDP MSG? %x %x %x @@@@@", dcid, sdp_dcid_, rx2buf[8]);
if (dcid == sdp_dcid_) {
switch (rx2buf[8]) {
case SDP_SERVICE_SEARCH_REQUEST:
process_sdp_service_search_request(&rx2buf[8]);
break;
case SDP_SERVICE_SEARCH_RESPONSE:
process_sdp_service_search_response(&rx2buf[8]);
break;
case SDP_SERVICE_ATTRIBUTE_REQUEST:
process_sdp_service_attribute_request(&rx2buf[8]);
break;
case SDP_SERVICE_ATTRIBUTE_RESPONSE:
process_sdp_service_attribute_response(&rx2buf[8]);
break;
case SDP_SERVICE_SEARCH_ATTRIBUTE_REQUEST:
process_sdp_service_search_attribute_request(&rx2buf[8]);
break;
case SDP_SERVICE_SEARCH_ATTRIBUTE_RESPONSE:
process_sdp_service_search_attribute_response(&rx2buf[8]);
break;
}
} else {
switch (rx2buf[8]) {
case L2CAP_CMD_CONNECTION_REQUEST:
process_l2cap_connection_request(&rx2buf[8], data_len);
break;
case L2CAP_CMD_CONNECTION_RESPONSE:
process_l2cap_connection_response(&rx2buf[8], data_len);
break;
case L2CAP_CMD_CONFIG_REQUEST:
process_l2cap_config_request(&rx2buf[8], data_len);
break;
case L2CAP_CMD_CONFIG_RESPONSE:
process_l2cap_config_response(&rx2buf[8], data_len);
break;
case HID_THDR_DATA_INPUT:
handleHIDTHDRData(rx2buf); // Pass the whole buffer...
break;
case L2CAP_CMD_COMMAND_REJECT:
process_l2cap_command_reject(&rx2buf[8], data_len);
break;
case L2CAP_CMD_DISCONNECT_REQUEST:
process_l2cap_disconnect_request(&rx2buf[8], data_len);
break;
}
}
}
//=============================================================================
// Process tx_data and state
//=============================================================================
void BluetoothConnection::tx_data(uint8_t *data, uint16_t length)
{
#ifdef DEBUG_BT_VERBOSE
DBGPrintf("tx_data callback (bluetooth): %d : ", pending_control_tx_);
for (uint8_t i = 0; i < length; i++) DBGPrintf("%02x ", data[i]);
DBGPrintf("\n");
#endif
switch (pending_control_tx_) {
case STATE_TX_SEND_CONNECT_INT:
delay(1);
connection_rxid_++;
sendl2cap_ConnectionRequest(device_connection_handle_, connection_rxid_, interrupt_dcid_, HID_INTR_PSM);
pending_control_tx_ = 0;
break;
case STATE_TX_SEND_CONECT_RSP_SUCCESS:
delay(1);
// Tell the device we are ready
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_++, control_dcid_, control_scid_, SUCCESSFUL);
pending_control_tx_ = STATE_TX_SEND_CONFIG_REQ;
break;
case STATE_TX_SEND_CONFIG_REQ:
delay(1);
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, control_scid_);
pending_control_tx_ = 0;
break;
case STATE_TX_SEND_CONECT_ISR_RSP_SUCCESS:
delay(1);
// Tell the device we are ready
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_++, interrupt_dcid_, interrupt_scid_, SUCCESSFUL);
pending_control_tx_ = STATE_TX_SEND_CONFIG_ISR_REQ;
break;
case STATE_TX_SEND_CONFIG_ISR_REQ:
delay(1);
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, interrupt_scid_);
pending_control_tx_ = 0;
break;
case STATE_TX_SEND_CONECT_SDP_RSP_SUCCESS:
delay(1);
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_, sdp_dcid_, sdp_scid_, SUCCESSFUL);
pending_control_tx_ = STATE_TX_SEND_CONFIG_SDP_REQ;
break;
case STATE_TX_SEND_CONFIG_SDP_REQ:
delay(1);
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, sdp_scid_);
pending_control_tx_ = 0;
break;
}
}
//=============================================================================
// Moved handling of L2CAP and HID messages
//=============================================================================
// Experiment to see if we can get SDP connectin setup
void BluetoothConnection::connectToSDP() {
DBGPrintf("$$$ BluetoothController::connectToSDP() Called\n");
connection_rxid_++;
sendl2cap_ConnectionRequest(device_connection_handle_, connection_rxid_,
sdp_dcid_, SDP_PSM);
pending_control_tx_ = 0;
}
void BluetoothConnection::process_l2cap_connection_request(uint8_t *data, uint16_t length) {
// ID LEN LEN PSM PSM SCID SCID
// 0x02 0x02 0x04 0x00 0x11 0x00 0x43 0x00
uint16_t psm = data[4] + ((uint16_t)data[5] << 8);
uint16_t scid = data[6] + ((uint16_t)data[7] << 8);
connection_started_ = true;
btController_->setTimer(nullptr, 0); // clear out timer
connection_rxid_ = data[1];
DBGPrintf(" recv L2CAP Connection Request: ID: %d, PSM: %x, SCID: %x\n", connection_rxid_, psm, scid);
// Assuming not pair mode Send response like:
// RXID Len LEN DCID DCID SCID SCID RES 0 0 0
// 0x03 0x02 0x08 0x00 0x70 0x00 0x43 0x00 0x01 0x00 0x00 0x00
if (psm == HID_CTRL_PSM) {
control_scid_ = scid;
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_, control_dcid_, control_scid_, PENDING);
pending_control_tx_ = STATE_TX_SEND_CONECT_RSP_SUCCESS;
} else if (psm == HID_INTR_PSM) {
interrupt_scid_ = scid;
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_, interrupt_dcid_, interrupt_scid_, PENDING);
pending_control_tx_ = STATE_TX_SEND_CONECT_ISR_RSP_SUCCESS;
} else if (psm == SDP_PSM) {
DBGPrintf(" <<< SDP PSM >>>\n");
sdp_scid_ = scid;
sendl2cap_ConnectionResponse(device_connection_handle_, connection_rxid_, sdp_dcid_, sdp_scid_, PENDING);
pending_control_tx_ = STATE_TX_SEND_CONECT_SDP_RSP_SUCCESS;
}
}
// Process the l2cap_connection_response...
void BluetoothConnection::process_l2cap_connection_response(uint8_t *data, uint16_t length) {
uint16_t scid = data[4] + ((uint16_t)data[5] << 8);
uint16_t dcid = data[6] + ((uint16_t)data[7] << 8);
uint16_t result = data[8] + ((uint16_t)data[9] << 8);
DBGPrintf(" recv L2CAP Connection Response: ID: %d, Dest:%x, Source:%x, Result:%x, Status: %x pending control: %x %x\n",
data[1], scid, dcid,
result, data[10] + ((uint16_t)data[11] << 8), btController_->pending_control_, pending_control_tx_);
// Experiment ignore if: pending_control_tx_ = STATE_TX_SEND_CONFIG_REQ;
if ((pending_control_tx_ == STATE_TX_SEND_CONFIG_REQ) || (pending_control_tx_ == STATE_TX_SEND_CONECT_RSP_SUCCESS)) {
DBGPrintf(" *** State == STATE_TX_SEND_CONFIG_REQ - try ignoring\n");
return;
}
//48 20 10 0 | c 0 1 0 | 3 0 8 0 44 0 70 0 0 0 0 0
if (dcid == interrupt_dcid_) {
interrupt_scid_ = scid;
DBGPrintf(" Interrupt Response\n");
connection_rxid_++;
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, scid);
} else if (dcid == control_dcid_) {
control_scid_ = scid;
DBGPrintf(" Control Response\n");
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, scid);
} else if (dcid == sdp_dcid_) {
// Check for failure!
DBGPrintf(" SDP Response\n");
if (result != 0) {
DBGPrintf(" Failed - No SDP!\n");
// Enable SCan to page mode
sdp_connected_ = false;
connection_complete_ |= CCON_SDP;
if (connection_complete_ == CCON_ALL)
btController_->sendHCIWriteScanEnable(2);
} else {
sdp_scid_ = scid;
sendl2cap_ConfigRequest(device_connection_handle_, connection_rxid_, scid);
}
} else {
DBGPrintf(" Unknown Response\n");
// Unknown dcid... Guess
if (((connection_complete_ | CCON_SDP) == CCON_ALL) && (result !=0)) {
DBGPrintf(" Guess SDP Response failure\n");
connection_complete_ |= CCON_SDP;
btController_->sendHCIWriteScanEnable(2);
}
}
}
void BluetoothConnection::process_l2cap_config_request(uint8_t *data, uint16_t length) {
//48 20 10 00 0c 00 01 00 * 04 02 08 00 70 00 00 00 01 02 30 00
//48 20 10 00 0C 00 01 00 * 04 03 08 00 70 00 00 00 01 02 48 00
uint16_t dcid = data[4] + ((uint16_t)data[5] << 8);
DBGPrintf(" recv L2CAP config Request: ID: %d, Dest:%x, Flags:%x, Options:",
data[1], dcid, data[6] + ((uint16_t)data[7] << 8));
for (uint16_t i = 8; i < length; i++) DBGPrintf(" %02x", data[i]);
uint16_t mtu = 0x2A0; // hard coded what we were returning....
for (uint16_t i = 8; i < length; i++) {
if ((data[i] == 1) && (data[i+1] == 2)) {
mtu = data[i+2] + (data[i+3] << 8);
DBGPrintf(" MTU:%u", mtu);
}
i += data[i+1] + 2;
}
DBGPrintf("\n");
// Now see which dest was specified
if (dcid == control_dcid_) {
DBGPrintf(" Control Configuration request\n");
sendl2cap_ConfigResponse(device_connection_handle_, data[1], control_scid_, mtu);
connection_complete_ |= CCON_CONT;
} else if (dcid == interrupt_dcid_) {
DBGPrintf(" Interrupt Configuration request\n");
sendl2cap_ConfigResponse(device_connection_handle_, data[1], interrupt_scid_, mtu);
connection_complete_ |= CCON_INT;
} else if (dcid == sdp_dcid_) {
DBGPrintf(" SDP Configuration request\n");
sendl2cap_ConfigResponse(device_connection_handle_, data[1], sdp_scid_, mtu);
connection_complete_ |= CCON_SDP;
sdp_connected_ = true;
} else if (dcid == sdp_scid_) {
DBGPrintf(" SDP Configuration request (But our SCID?)\n");
// maybe we should change the ids around?
sendl2cap_ConfigResponse(device_connection_handle_, data[1], sdp_scid_, mtu);
// We see this with some PS4?
// Enable SCan to page mode
connection_complete_ |= CCON_SDP;
sdp_connected_ = true;
}
}
void BluetoothConnection::process_l2cap_config_response(uint8_t *data, uint16_t length) {
// 48 20 12 0 e 0 1 0 5 0 a 0 70 0 0 0 0 0 1 2 30 0
uint16_t scid = data[4] + ((uint16_t)data[5] << 8);
uint16_t result = data[8] + ((uint16_t)data[9] << 8);
DBGPrintf(" recv L2CAP config Response: ID: %d, Source:%x, Flags:%x, Result:%x",
data[1], scid, data[6] + ((uint16_t)data[7] << 8), result );
switch (result) {
case 0x0000: DBGPrintf("(Success)"); break;
case 0x0001: DBGPrintf("(Failure – unacceptable parameters)"); break;
case 0x0002: DBGPrintf("(Failure – rejected (no reason provided))"); break;
case 0x0003: DBGPrintf("(Failure – unknown options)"); break;
case 0x0004: DBGPrintf("(Pending)"); break;
case 0x0005: DBGPrintf("(Failure - flow spec rejected)"); break;
}
if (length > 10) {
DBGPrintf(", Config: ");
for (uint16_t i = 10; i < length; i++) DBGPrintf(" %02x", data[i]);
for (uint16_t i = 10; i < length; i++) {
if ((data[i] == 1) && (data[i+1] == 2)) {
uint16_t mtu = data[i+2] + (data[i+3] << 8);
DBGPrintf(" MTU:%u", mtu);
}
i += data[i+1] + 2;
}
}
DBGPrintf("\n");
if (scid == control_dcid_) {
// Maybe we should avoid setting HID mode and only do
// so if the class of device is either/or MOUSE or Keyboard.
// Set HID Boot mode
// Don't do if PS3... Or if class told us not to
if (device_class_ & 0xC0) {
if (use_hid_protocol_) {
// see what happens if I tell it to
btController_->setHIDProtocol(HID_RPT_PROTOCOL);
} else {
// don't call through Null pointer
if ((device_driver_ == nullptr) ||
!(device_driver_->special_process_required & BTHIDInput::SP_PS3_IDS)) {
btController_->setHIDProtocol(HID_BOOT_PROTOCOL); //
}
}
}
//setHIDProtocol(HID_RPT_PROTOCOL); //HID_RPT_PROTOCOL
if ((btController_->do_pair_device_ || btController_->do_pair_ssp_) && !(device_driver_ && (device_driver_->special_process_required & BTHIDInput::SP_DONT_NEED_CONNECT))) {
pending_control_tx_ = STATE_TX_SEND_CONNECT_INT;
} else if (device_driver_ && (device_driver_->special_process_required & BTHIDInput::SP_NEED_CONNECT)) {
DBGPrintf(" Needs connect to device INT(PS4?)\n");
// The PS4 requires a connection request to it.
pending_control_tx_ = STATE_TX_SEND_CONNECT_INT;
} else if (connection_started_by_timer_) {
DBGPrintf(" Connection started by timeout continue to interrupt\n");
// The PS4 requires a connection request to it.
pending_control_tx_ = STATE_TX_SEND_CONNECT_INT;
} else {
btController_->pending_control_ = 0;
}
// Could be cleaner
if (((device_class_ & 0xC0) == 0) && (pending_control_tx_ == STATE_TX_SEND_CONNECT_INT)) {
// if we are not mouse and keybboard and we need to send the connect int
// do it now.
delay(1);
connection_rxid_++;
sendl2cap_ConnectionRequest(device_connection_handle_, connection_rxid_, interrupt_dcid_, HID_INTR_PSM);
pending_control_tx_ = 0;
}
DBGPrintf("\tNew Pending control pair:%u driver:%p HID:%u TX: %x\n", btController_->do_pair_device_, device_driver_, check_for_hid_descriptor_, pending_control_tx_);
connection_complete_ |= CCON_CONT;
} else if (scid == interrupt_dcid_) {
// Lets try SDP connect if we are not already connected.
if (connection_started_by_timer_) {
DBGPrintf(" Connection started by timeout experiment continue to SDP\n");
} else
if (!check_for_hid_descriptor_) connection_complete_ |= CCON_SDP; // Don't force connect if no is asking for HID
if ((connection_complete_ & CCON_SDP) == 0) connectToSDP(); // temp to see if we can do this later...
// Enable SCan to page mode
//connection_complete_ = true;
//sendHCIWriteScanEnable(2);
connection_complete_ |= CCON_INT;
} else if (scid == sdp_dcid_) {
// Enable SCan to page mode
DBGPrintf(" SDP configuration complete\n");
// Enable SCan to page mode
connection_complete_ |= CCON_SDP;
sdp_connected_ = true;
}
if (connection_complete_ == CCON_ALL) {
btController_->sendHCIWriteScanEnable(2);
}
}
void BluetoothConnection::process_l2cap_command_reject(uint8_t *data, uint16_t length) {
// 48 20 b 0 7 0 70 0 *1 0 0 0 2 0 4
DBGPrintf(" recv L2CAP command reject: ID: %d, length:%x, Reason:%x, Data: %x %x \n",
data[1], data[2] + ((uint16_t)data[3] << 8), data[4], data[5], data[6]);
}
void BluetoothConnection::process_l2cap_disconnect_request(uint8_t *data, uint16_t length) {
uint16_t dcid = data[4] + ((uint16_t)data[5] << 8);
uint16_t scid = data[6] + ((uint16_t)data[7] << 8);
DBGPrintf(" recv L2CAP disconnect request: ID: %d, Length:%x, Dest:%x, Source:%x\n",
data[1], data[2] + ((uint16_t)data[3] << 8), dcid, scid);
// May need to respond in some cases...
if (dcid == control_dcid_) {
DBGPrintf(" Control disconnect request\n");
} else if (dcid == interrupt_dcid_) {
DBGPrintf(" Interrupt disconnect request\n");
} else if (dcid == sdp_dcid_) {
DBGPrintf(" SDP disconnect request\n");
sdp_connected_ = false; // say we are not connected
sendl2cap_DisconnectResponse(device_connection_handle_, data[1],
sdp_dcid_,
sdp_scid_);
}
}
void BluetoothConnection::handleHIDTHDRData(uint8_t *data) {
// Example
// T HID data
//48 20 d 0 9 0 71 0 a1 3 8a cc c5 a 23 22 79
uint16_t len = data[4] + ((uint16_t)data[5] << 8);
DBGPrintf("HID HDR Data: len: %d, Type: %d Con:%p\n", len, data[9], this);
// ??? How to parse??? Use HID object???
#if 0
if (!find_driver_type_1_called_ && !device_driver_ && !have_hid_descriptor_) {
// If we got to here and don't have driver or ... try once to get one
DBGPrintf("\t $$$ No HID or Driver: See if one wants it now\n");
// BUGBUG we initialize descriptor with name...
device_driver_ = find_driver(descriptor_, 1);
}
#endif
if (device_driver_) {
device_driver_->process_bluetooth_HID_data(&data[9], len - 1); // We skip the first byte...
} else if (have_hid_descriptor_) {
// nead to bias to location within data.
parse(0x0100 | data[9], &data[10], len - 2);
} else {
switch (data[9]) {
case 1:
DBGPrintf(" Keyboard report type\n");
break;
case 2:
DBGPrintf(" Mouse report type\n");
break;
case 3:
DBGPrintf(" Combo keyboard/pointing\n");
break;
default:
DBGPrintf(" Unknown report\n");
}
}
}
void BluetoothConnection::handle_HCI_WRITE_SCAN_ENABLE_complete(uint8_t *rxbuf)
{
// See if we have driver and a remote
DBGPrintf("Write_Scan_enable Completed - connection state: %x\n", connection_complete_);
if (connection_complete_ == CCON_ALL) { // We have a driver call their
if (device_driver_) {
device_driver_->connectionComplete();
} else if (check_for_hid_descriptor_) {
have_hid_descriptor_ = false;
sdp_buffer_ = descriptor_;
sdp_buffer_len_ = sizeof(descriptor_);
if (!startSDP_ServiceSearchAttributeRequest(0x206, 0x206, sdp_buffer_, sdp_buffer_len_)) {
// Maybe try to claim_driver as we won't get a HID report.
DBGPrintf("Failed to start SDP attribute request - so lets try again to find a driver");
device_driver_ = find_driver(descriptor_, 1);
}
}
connection_complete_ = 0; // only call once
}
}
void BluetoothConnection::handle_HCI_OP_ROLE_DISCOVERY_complete(uint8_t *rxbuf)
{
// PS4 looks something like: 0E 07 01 09 08 00 47 00 01
// Others look like : 0E 07 01 09 08 00 48 00 00
// last byte is the interesting one says what role.
DBGPrintf("ROLE_DISCOVERY Completed - Role: %x ", rxbuf[8]);
if (rxbuf[8] == 0) {
DBGPrintf("(Central)\n");
// Set a timeout
btController_->setTimer(this, CONNECTION_TIMEOUT_US);
} else {
DBGPrintf("(Peripheral)\n");
// Should maybe do some state checking before doing this, but...
DBGPrintf("\t** We will issue connection requsts **\n ");
connection_started_ = true;
sendl2cap_ConnectionRequest(device_connection_handle_, connection_rxid_, control_dcid_, HID_CTRL_PSM);
}
}
void BluetoothConnection::timer_event(USBDriverTimer *whichTimer)
{
DBGPrintf("BluetoothConnection::timer_event(%p) : %u\n", this, connection_started_);
if (whichTimer == &bt_connection_timer_) {
if (device_driver_) {
device_driver_->bt_hid_timer_event(whichTimer);
}
} else if (!connection_started_) {
DBGPrintf("\t** Timed out now try issue connection requsts **\n ");
connection_started_ = true;
connection_started_by_timer_ = true;
connection_rxid_++;
sendl2cap_ConnectionRequest(device_connection_handle_, connection_rxid_, control_dcid_, HID_CTRL_PSM);
}
}
// l2cap support functions.
void BluetoothConnection::sendl2cap_ConnectionResponse(uint16_t handle, uint8_t rxid, uint16_t dcid, uint16_t scid, uint8_t result) {
uint8_t l2capbuf[12];
l2capbuf[0] = L2CAP_CMD_CONNECTION_RESPONSE; // Code
l2capbuf[1] = rxid; // Identifier
l2capbuf[2] = 0x08; // Length
l2capbuf[3] = 0x00;
l2capbuf[4] = dcid & 0xff; // Destination CID
l2capbuf[5] = dcid >> 8;
l2capbuf[6] = scid & 0xff; // Source CID
l2capbuf[7] = scid >> 8;
l2capbuf[8] = result; // Result: Pending or Success
l2capbuf[9] = 0x00;
l2capbuf[10] = 0x00; // No further information
l2capbuf[11] = 0x00;
DBGPrintf("\nSend L2CAP_CMD_CONNECTION_RESPONSE(RXID:%x, DCID:%x, SCID:%x RES:%x)\n", rxid, dcid, scid, result);
btController_->sendL2CapCommand(handle, l2capbuf, sizeof(l2capbuf));
}
void BluetoothConnection::sendl2cap_ConnectionRequest(uint16_t handle, uint8_t rxid, uint16_t scid, uint16_t psm) {
uint8_t l2capbuf[8];
l2capbuf[0] = L2CAP_CMD_CONNECTION_REQUEST; // Code
l2capbuf[1] = rxid; // Identifier
l2capbuf[2] = 0x04; // Length
l2capbuf[3] = 0x00;
l2capbuf[4] = (uint8_t)(psm & 0xff); // PSM
l2capbuf[5] = (uint8_t)(psm >> 8);
l2capbuf[6] = scid & 0xff; // Source CID
l2capbuf[7] = (scid >> 8) & 0xff;
DBGPrintf("\nSend ConnectionRequest (RXID:%x, SCID:%x, PSM:%x)\n", rxid, scid, psm);
btController_->sendL2CapCommand(handle, l2capbuf, sizeof(l2capbuf));
}
void BluetoothConnection::sendl2cap_ConfigRequest(uint16_t handle, uint8_t rxid, uint16_t dcid) {
uint8_t l2capbuf[12];
l2capbuf[0] = L2CAP_CMD_CONFIG_REQUEST; // Code
l2capbuf[1] = rxid; // Identifier
l2capbuf[2] = 0x08; // Length
l2capbuf[3] = 0x00;
l2capbuf[4] = dcid & 0xff; // Destination CID
l2capbuf[5] = (dcid >> 8) & 0xff;
l2capbuf[6] = 0x00; // Flags
l2capbuf[7] = 0x00;
l2capbuf[8] = 0x01; // Config Opt: type = MTU (Maximum Transmission Unit) - Hint
l2capbuf[9] = 0x02; // Config Opt: length
l2capbuf[10] = 0xFF; // MTU
l2capbuf[11] = 0xFF;
DBGPrintf("\nsend L2CAP_ConfigRequest(RXID:%x, DCID:%x)\n", rxid, dcid);
btController_->sendL2CapCommand(handle, l2capbuf, sizeof(l2capbuf));
}
void BluetoothConnection::sendl2cap_ConfigResponse(uint16_t handle, uint8_t rxid, uint16_t scid, uint16_t mtu) {
uint8_t l2capbuf[10];
l2capbuf[0] = L2CAP_CMD_CONFIG_RESPONSE; // Code
l2capbuf[1] = rxid; // Identifier
l2capbuf[2] = 0x06; // try not sending mtu 0x0A; // Length
l2capbuf[3] = 0x00;
l2capbuf[4] = scid & 0xff; // Source CID
l2capbuf[5] = (scid >> 8) & 0xff;
l2capbuf[6] = 0x00; // Flag
l2capbuf[7] = 0x00;
l2capbuf[8] = 0x00; // Result
l2capbuf[9] = 0x00;
//l2capbuf[10] = 0x01; // Config
//l2capbuf[11] = 0x02;
//l2capbuf[12] = mtu & 0xff; //0xA0;
//l2capbuf[13] = mtu >> 8; //0x02;
DBGPrintf("\nsend L2CAP_ConfigResponse(RXID:%x, SCID:%x)\n", rxid, scid);
btController_->sendL2CapCommand(handle, l2capbuf, sizeof(l2capbuf));
}
void BluetoothConnection::sendl2cap_DisconnectResponse(uint16_t handle, uint8_t rxid, uint16_t dcid, uint16_t scid) {
uint8_t l2capbuf[8];
l2capbuf[0] = L2CAP_CMD_DISCONNECT_RESPONSE; // Code
l2capbuf[1] = rxid; // Identifier
l2capbuf[2] = 0x04; // Length
l2capbuf[3] = 0x00;
l2capbuf[4] = dcid & 0xff; // dcid CID
l2capbuf[5] = (dcid >> 8) & 0xff;
l2capbuf[6] = scid & 0xff; // SCID CID
l2capbuf[7] = (scid >> 8) & 0xff;
DBGPrintf("\nsend L2CAP_DisconnectResponse(RXID:%x, DCID:%x, SCID:%x)\n", rxid, dcid, scid);
btController_->sendL2CapCommand(handle, l2capbuf, sizeof(l2capbuf));
}
//=============================================================================
// Process the SDP stuff.
//=============================================================================
bool BluetoothConnection::startSDP_ServiceSearchAttributeRequest(uint16_t range_low, uint16_t range_high, uint8_t *buffer, uint32_t cb)
{
if (!sdp_connected_) return false;
sdp_request_range_low_ = range_low;
sdp_reqest_range_high_ = range_high;
sdp_request_buffer_ = buffer;
sdp_request_buffer_cb_ = cb;
sdp_request_buffer_used_cnt_ = 0; // cnt in bytes used.
sdp_request_completed_ = false;
// So start it up
send_SDP_ServiceSearchAttributeRequest(nullptr, 0);
return true;
}
void BluetoothConnection::send_SDP_ServiceSearchRequest(uint8_t *continue_state, uint8_t cb)
{
// Example message: first part l2cap. Which will let them fill that in
// l2cap: 0x47 0x0 0x18 0x0 0x14 0x0 0x42 0x0
// PSM header: 0x6 0x0 0x0 0x0 0xf
// req: 0x35 0x3 0x19 0x1 0x0 0xff 0xff 0x35 0x5 0xa 0x0 0x0 0xff 0xff 0x0
uint8_t sdpcmdbuf[30]; // 20 + up to 10 continue
seq_number_++;
uint16_t packet_size = (13 - 5) + cb;
sdpcmdbuf[0] = 0x2; // SDP_ServiceSearchRequest
sdpcmdbuf[1] = seq_number_ >> 8; // Sequence number
sdpcmdbuf[2] = seq_number_ & 0xff; //
sdpcmdbuf[3] = packet_size >> 8; // Data in the rest...
sdpcmdbuf[4] = packet_size & 0xff; //
// Now lets build the attribute request data.
// 0x35 0x3 0x19 0x1 0x0 0xff 0xff 0x35 0x5 0xa 0x0 0x0 0xff 0xff 0x2 0x0 0x26
sdpcmdbuf[5] = 0x35; // type sequence
sdpcmdbuf[6] = 0x03; // 3 bytes
sdpcmdbuf[7] = 0x19; // UUID 2 bytes
sdpcmdbuf[8] = 0x01; // UUID
sdpcmdbuf[9] = 0x00; // UUID
sdpcmdbuf[10] = 0xff; // MAX attributes
sdpcmdbuf[11] = 0xff; //
sdpcmdbuf[12] = cb; // Count of continuation bytes
for (uint8_t i = 0; i < cb; i++) sdpcmdbuf[13 + i] = continue_state[i];
// Now lets try to send the packet
btController_->sendL2CapCommand(sdpcmdbuf, 13 + cb, sdp_scid_);
}
void BluetoothConnection::send_SDP_ServiceSearchAttributeRequest(uint8_t *continue_state, uint8_t cb)
{
// Example message: first part l2cap. Which will let them fill that in
// l2cap: 0x47 0x0 0x18 0x0 0x14 0x0 0x42 0x0
// PSM header: 0x6 0x0 0x0 0x0 0xf
// req: 0x35 0x3 0x19 0x1 0x0 0xff 0xff 0x35 0x5 0xa 0x0 0x0 0xff 0xff 0x0
uint16_t continue_data_offset = 17;
uint8_t sdpcmdbuf[37]; // 20 + up to 17 continue
seq_number_++;
sdpcmdbuf[0] = 0x6; // SDP_ServiceSearchAttributeReques
sdpcmdbuf[1] = seq_number_ >> 8; // Sequence number
sdpcmdbuf[2] = seq_number_ & 0xff; //
//sdpcmdbuf[3] = packet_size >> 8; // Data in the rest...
//sdpcmdbuf[4] = packet_size & 0xff; //
// Now lets build the attribute request data.
// 0x35 0x3 0x19 0x1 0x0 0xff 0xff 0x35 0x5 0xa 0x0 0x0 0xff 0xff 0x2 0x0 0x26
sdpcmdbuf[5] = 0x35; // type sequence
sdpcmdbuf[6] = 0x03; // 3 bytes
sdpcmdbuf[7] = 0x19; // UUID 2 bytes
sdpcmdbuf[8] = 0x01; // UUID
sdpcmdbuf[9] = 0x00; // UUID
sdpcmdbuf[10] = 0xff; // MAX size
sdpcmdbuf[11] = 0xff; //
sdpcmdbuf[12] = 0x35; // Sequence
if (sdp_request_range_low_ == sdp_reqest_range_high_) {
// doing specific
sdpcmdbuf[13] = 0x03; // 3 bytes
sdpcmdbuf[14] = 0x09; // 2 byte integer
sdpcmdbuf[15] = sdp_request_range_low_ >> 8; // Attribute low
sdpcmdbuf[16] = sdp_request_range_low_ & 0xff; //
} else {
// doing range
sdpcmdbuf[13] = 0x05; // 5 bytes
sdpcmdbuf[14] = 0x0A; // 4 byte integer
sdpcmdbuf[15] = sdp_request_range_low_ >> 8; // Attribute low
sdpcmdbuf[16] = sdp_request_range_low_ & 0xff; //
sdpcmdbuf[17] = sdp_reqest_range_high_ & 0xff; // high
sdpcmdbuf[18] = sdp_reqest_range_high_ & 0xff; // high
continue_data_offset = 19;
}
sdpcmdbuf[continue_data_offset++] = cb; // Count of continuation bytes
for (uint8_t i = 0; i < cb; i++) sdpcmdbuf[continue_data_offset + i] = continue_state[i];
uint16_t packet_size = (continue_data_offset - 5) + cb;
sdpcmdbuf[3] = packet_size >> 8; // Data in the rest...
sdpcmdbuf[4] = packet_size & 0xff; //
// Now lets try to send the packet
btController_->sendL2CapCommand(sdpcmdbuf, continue_data_offset + cb, sdp_scid_);
}
//----------------------------------------------------------------
// Some SDP stuff.
void BluetoothConnection::process_sdp_service_search_request(uint8_t *data) {
DBGPrintf("process_sdp_service_search_request\n");
}
void BluetoothConnection::process_sdp_service_search_response(uint8_t *data) {
DBGPrintf("process_sdp_service_search_response\n");
// (processed before us)(0) 48 20 1A 00 16 00 40 00
// (0) 03 00 01 00 11
// (5) 00 03 00 03 00 00 00 00 00 01 00 00 00 01 00 01 00
uint16_t total_count = (data[5] << 8) + data[6];
uint16_t current_count = (data[7] << 8) + data[8];
uint8_t offset = 9;
DBGPrintf("\tTotal Count:%u Current:%u", total_count, current_count);
for (uint8_t i = 0; i < current_count; i++) {
uint32_t srh = ((uint32_t)data[offset + 0] << 24) + ((uint32_t)data[offset + 1] << 16) +
((uint32_t)data[offset + 2] << 8) + (data[offset + 3]);
DBGPrintf(" %08X", srh);
offset += 4;
}
uint8_t continue_state_count = data[offset++];
DBGPrintf(" Cont CB:%u", continue_state_count);
for (uint8_t i = 0; i < continue_state_count; i++) DBGPrintf(" %02X", data[offset++]);
DBGPrintf("\n");
}
void BluetoothConnection::process_sdp_service_attribute_request(uint8_t *data) {
DBGPrintf("process_sdp_service_attribute_request\n");
}
void BluetoothConnection::process_sdp_service_attribute_response(uint8_t *data) {
DBGPrintf("process_sdp_service_attribute_response:\n");
}
void BluetoothConnection::process_sdp_service_search_attribute_request(uint8_t *data) {
DBGPrintf("\n### process_sdp_service_search_attribute_request ###\n");
// Print out the data like UHS2
#ifdef DEBUG_BT
uint16_t service = data[1] << 8 | data[2];
uint16_t length = data[3] << 8 | data[4];
uint16_t uuid = (data[8] << 8 | data[9]);
if (uuid == 0x0000) // Check if it's sending the UUID as a 128-bit UUID
uuid = (data[10] << 8 | data[11]);
DBGPrintf(" Service:%x UUID:%x Length:%u\n", service, uuid, length);
DBGPrintf(" Data:");
for (uint8_t i = 0; i < length; i++) {
DBGPrintf("%02x ", data[5 + i]);
}
DBGPrintf("\n");
#endif
// lets respond saying we don't support the service
uint8_t l2capbuf[10];
l2capbuf[0] = SDP_SERVICE_SEARCH_ATTRIBUTE_RESPONSE;
l2capbuf[1] = data[1];
l2capbuf[2] = data[2];
l2capbuf[3] = 0x00; // MSB Parameter Length
l2capbuf[4] = 0x05; // LSB Parameter Length = 5
l2capbuf[5] = 0x00; // MSB AttributeListsByteCount
l2capbuf[6] = 0x02; // LSB AttributeListsByteCount = 2
/* Attribute ID/Value Sequence: */
l2capbuf[7] = 0x35; // Data element sequence - length in next byte
l2capbuf[8] = 0x00; // Length = 0
l2capbuf[9] = 0x00; // No continuation state
DBGPrintf("Send SDP_SERVICE_SEARCH_ATTRIBUTE_RESPONSE not supported\n");
btController_->sendL2CapCommand(device_connection_handle_, l2capbuf, sizeof(l2capbuf),
sdp_scid_ & 0xff, sdp_scid_ >> 8);
}
void BluetoothConnection::process_sdp_service_search_attribute_response(uint8_t *data) {
//before :0B 20 34 00 30 00 40 00
// (00) 07 00 01 00 2B
// (5) 00 26 // cb_data
// (7) 36 03 A2 36 00 8E 09 00 00 0A 00 00 00 00 09 00 01 35 03 19 10 00 09 00 04 35 0D 35 06 19 01 00 09 00 01 35 03 19 // data
// (7 + cb_data) 02 00 26 //
uint16_t cb_data = (data[5] << 8) + data[6];
uint8_t cb_cont = data[7 + cb_data];
uint8_t *pb_cont = &data[8 + cb_data];
DBGPrintf("process_sdp_service_search_attribute_response: cb dat:%u cont:%u ", cb_data, cb_cont);
for (uint8_t i = 0; i < cb_cont; i++) DBGPrintf(" %02X", pb_cont[i]);
DBGPrintf("\n");
// lets copy the data in...
uint16_t cb_space = sdp_request_buffer_cb_ - sdp_request_buffer_used_cnt_;
if (cb_data > cb_space) cb_data = cb_space;
memcpy(&sdp_request_buffer_[sdp_request_buffer_used_cnt_], &data[7], cb_data);
sdp_request_buffer_used_cnt_ += cb_data;
// Now see if we are done or not, if not start up next request
if ((cb_cont == 0) || (sdp_request_buffer_used_cnt_ == sdp_request_buffer_cb_)) {
sdp_request_completed_ = true;
if (device_driver_) {
device_driver_->sdp_command_completed(true); // We skip the first byte...
} else {
// Must be our own... we should now try to proces it.
completeSDPRequest(true);
}
} else {
send_SDP_ServiceSearchAttributeRequest(pb_cont, cb_cont);
}
}
//=============================================================================
// HID SUPPORT - maybe split out
//=============================================================================
// lets use the SDP Support functions to try to retrieve the
// HID Descriptor using SDP
//=============================================================================
bool BluetoothConnection::completeSDPRequest(bool success)
{
if (!success) return false;
// Now real hack:
// Lets see if we can now print out the report descriptor.
uint32_t cb_left = sdp_request_buffer_used_cnt_;
uint8_t *pb = sdp_buffer_; // start at second byte;
sdp_element_t sdpe;
bool found_report_attribute = false;
while (cb_left > 0) {
int cb = extract_next_SDP_Token(pb, cb_left, sdpe);
if (cb <= 0 ) break;
// Should do a lot more validation, but ...
// At least check that we see a value with our attribute number
if ((sdpe.dtype == DU32) && (sdpe.data.uw == 0x206)) found_report_attribute = true;
if (found_report_attribute && (sdpe.element_type == 4) && (sdpe.dtype == DPB)) {
descsize_ = sdpe.element_size;
memcpy(descriptor_, sdpe.data.pb, descsize_);
dumpHIDReportDescriptor();
have_hid_descriptor_ = true;
parse();
return true;
}
cb_left -= cb;
pb += cb;
}
return false;
}
//BUGBUG: move to class or ...
int BluetoothConnection::extract_next_SDP_Token(uint8_t *pbElement, int cb_left, sdp_element_t &sdpe) {
uint8_t element = *pbElement; // first byte is type of element
sdpe.element_type = element >> 3;
sdpe.element_size = element & 7;
sdpe.data.luw = 0; // start off 0
int size_of_element = -1; // should never use this initialized value
switch (sdpe.element_size) {
case 0: size_of_element = 2; break;
case 1: size_of_element = 3; break;
case 2: size_of_element = 5; break;
case 3: size_of_element = 9; break;
case 4: size_of_element = 17; break;
case 5: size_of_element = pbElement[1] + 2; break;
case 6: size_of_element = (pbElement[1] << 8) + pbElement[2] + 3; break;
case 7: size_of_element = (uint32_t)(pbElement[1] << 24) + (uint32_t)(pbElement[2] << 16) + (pbElement[3] << 8) + pbElement[4] + 5; break;