diff options
Diffstat (limited to 'lib/usbhost/USB_Host_Shield_2.0/BTHID.cpp')
| -rw-r--r-- | lib/usbhost/USB_Host_Shield_2.0/BTHID.cpp | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/lib/usbhost/USB_Host_Shield_2.0/BTHID.cpp b/lib/usbhost/USB_Host_Shield_2.0/BTHID.cpp new file mode 100644 index 0000000000..bfa9202c39 --- /dev/null +++ b/lib/usbhost/USB_Host_Shield_2.0/BTHID.cpp @@ -0,0 +1,399 @@ +/* Copyright (C) 2013 Kristian Lauszus, TKJ Electronics. All rights reserved. + + This software may be distributed and modified under the terms of the GNU + General Public License version 2 (GPL2) as published by the Free Software + Foundation and appearing in the file GPL2.TXT included in the packaging of + this file. Please note that GPL2 Section 2[b] requires that all works based + on this software must also be made publicly available under the terms of + the GPL2 ("Copyleft"). + + Contact information + ------------------- + + Kristian Lauszus, TKJ Electronics + Web : http://www.tkjelectronics.com + e-mail : kristianl@tkjelectronics.com + */ + +#include "BTHID.h" +// To enable serial debugging see "settings.h" +//#define EXTRADEBUG // Uncomment to get even more debugging data +//#define PRINTREPORT // Uncomment to print the report send by the HID device + +BTHID::BTHID(BTD *p, bool pair, const char *pin) : +BluetoothService(p), // Pointer to USB class instance - mandatory +protocolMode(HID_BOOT_PROTOCOL) { + for(uint8_t i = 0; i < NUM_PARSERS; i++) + pRptParser[i] = NULL; + + pBtd->pairWithHIDDevice = pair; + pBtd->btdPin = pin; + + /* Set device cid for the control and intterrupt channelse - LSB */ + control_dcid[0] = 0x70; // 0x0070 + control_dcid[1] = 0x00; + interrupt_dcid[0] = 0x71; // 0x0071 + interrupt_dcid[1] = 0x00; + + Reset(); +} + +void BTHID::Reset() { + connected = false; + activeConnection = false; + l2cap_event_flag = 0; // Reset flags + l2cap_state = L2CAP_WAIT; + ResetBTHID(); +} + +void BTHID::disconnect() { // Use this void to disconnect the device + // First the HID interrupt channel has to be disconnected, then the HID control channel and finally the HCI connection + pBtd->l2cap_disconnection_request(hci_handle, ++identifier, interrupt_scid, interrupt_dcid); + Reset(); + l2cap_state = L2CAP_INTERRUPT_DISCONNECT; +} + +void BTHID::ACLData(uint8_t* l2capinbuf) { + if(!pBtd->l2capConnectionClaimed && pBtd->incomingHIDDevice && !connected && !activeConnection) { + if(l2capinbuf[8] == L2CAP_CMD_CONNECTION_REQUEST) { + if((l2capinbuf[12] | (l2capinbuf[13] << 8)) == HID_CTRL_PSM) { + pBtd->incomingHIDDevice = false; + pBtd->l2capConnectionClaimed = true; // Claim that the incoming connection belongs to this service + activeConnection = true; + hci_handle = pBtd->hci_handle; // Store the HCI Handle for the connection + l2cap_state = L2CAP_WAIT; + } + } + } + + if(checkHciHandle(l2capinbuf, hci_handle)) { // acl_handle_ok + if((l2capinbuf[6] | (l2capinbuf[7] << 8)) == 0x0001U) { // l2cap_control - Channel ID for ACL-U + if(l2capinbuf[8] == L2CAP_CMD_COMMAND_REJECT) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nL2CAP Command Rejected - Reason: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[13], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[12], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[17], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[16], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[15], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[14], 0x80); +#endif + } else if(l2capinbuf[8] == L2CAP_CMD_CONNECTION_RESPONSE) { + if(((l2capinbuf[16] | (l2capinbuf[17] << 8)) == 0x0000) && ((l2capinbuf[18] | (l2capinbuf[19] << 8)) == SUCCESSFUL)) { // Success + if(l2capinbuf[14] == control_dcid[0] && l2capinbuf[15] == control_dcid[1]) { + //Notify(PSTR("\r\nHID Control Connection Complete"), 0x80); + identifier = l2capinbuf[9]; + control_scid[0] = l2capinbuf[12]; + control_scid[1] = l2capinbuf[13]; + l2cap_set_flag(L2CAP_FLAG_CONTROL_CONNECTED); + } else if(l2capinbuf[14] == interrupt_dcid[0] && l2capinbuf[15] == interrupt_dcid[1]) { + //Notify(PSTR("\r\nHID Interrupt Connection Complete"), 0x80); + identifier = l2capinbuf[9]; + interrupt_scid[0] = l2capinbuf[12]; + interrupt_scid[1] = l2capinbuf[13]; + l2cap_set_flag(L2CAP_FLAG_INTERRUPT_CONNECTED); + } + } + } else if(l2capinbuf[8] == L2CAP_CMD_CONNECTION_REQUEST) { +#ifdef EXTRADEBUG + Notify(PSTR("\r\nL2CAP Connection Request - PSM: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[13], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[12], 0x80); + Notify(PSTR(" SCID: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[15], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[14], 0x80); + Notify(PSTR(" Identifier: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[9], 0x80); +#endif + if((l2capinbuf[12] | (l2capinbuf[13] << 8)) == HID_CTRL_PSM) { + identifier = l2capinbuf[9]; + control_scid[0] = l2capinbuf[14]; + control_scid[1] = l2capinbuf[15]; + l2cap_set_flag(L2CAP_FLAG_CONNECTION_CONTROL_REQUEST); + } else if((l2capinbuf[12] | (l2capinbuf[13] << 8)) == HID_INTR_PSM) { + identifier = l2capinbuf[9]; + interrupt_scid[0] = l2capinbuf[14]; + interrupt_scid[1] = l2capinbuf[15]; + l2cap_set_flag(L2CAP_FLAG_CONNECTION_INTERRUPT_REQUEST); + } + } else if(l2capinbuf[8] == L2CAP_CMD_CONFIG_RESPONSE) { + if((l2capinbuf[16] | (l2capinbuf[17] << 8)) == 0x0000) { // Success + if(l2capinbuf[12] == control_dcid[0] && l2capinbuf[13] == control_dcid[1]) { + //Notify(PSTR("\r\nHID Control Configuration Complete"), 0x80); + identifier = l2capinbuf[9]; + l2cap_set_flag(L2CAP_FLAG_CONFIG_CONTROL_SUCCESS); + } else if(l2capinbuf[12] == interrupt_dcid[0] && l2capinbuf[13] == interrupt_dcid[1]) { + //Notify(PSTR("\r\nHID Interrupt Configuration Complete"), 0x80); + identifier = l2capinbuf[9]; + l2cap_set_flag(L2CAP_FLAG_CONFIG_INTERRUPT_SUCCESS); + } + } + } else if(l2capinbuf[8] == L2CAP_CMD_CONFIG_REQUEST) { + if(l2capinbuf[12] == control_dcid[0] && l2capinbuf[13] == control_dcid[1]) { + //Notify(PSTR("\r\nHID Control Configuration Request"), 0x80); + pBtd->l2cap_config_response(hci_handle, l2capinbuf[9], control_scid); + } else if(l2capinbuf[12] == interrupt_dcid[0] && l2capinbuf[13] == interrupt_dcid[1]) { + //Notify(PSTR("\r\nHID Interrupt Configuration Request"), 0x80); + pBtd->l2cap_config_response(hci_handle, l2capinbuf[9], interrupt_scid); + } + } else if(l2capinbuf[8] == L2CAP_CMD_DISCONNECT_REQUEST) { + if(l2capinbuf[12] == control_dcid[0] && l2capinbuf[13] == control_dcid[1]) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nDisconnect Request: Control Channel"), 0x80); +#endif + identifier = l2capinbuf[9]; + pBtd->l2cap_disconnection_response(hci_handle, identifier, control_dcid, control_scid); + Reset(); + } else if(l2capinbuf[12] == interrupt_dcid[0] && l2capinbuf[13] == interrupt_dcid[1]) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nDisconnect Request: Interrupt Channel"), 0x80); +#endif + identifier = l2capinbuf[9]; + pBtd->l2cap_disconnection_response(hci_handle, identifier, interrupt_dcid, interrupt_scid); + Reset(); + } + } else if(l2capinbuf[8] == L2CAP_CMD_DISCONNECT_RESPONSE) { + if(l2capinbuf[12] == control_scid[0] && l2capinbuf[13] == control_scid[1]) { + //Notify(PSTR("\r\nDisconnect Response: Control Channel"), 0x80); + identifier = l2capinbuf[9]; + l2cap_set_flag(L2CAP_FLAG_DISCONNECT_CONTROL_RESPONSE); + } else if(l2capinbuf[12] == interrupt_scid[0] && l2capinbuf[13] == interrupt_scid[1]) { + //Notify(PSTR("\r\nDisconnect Response: Interrupt Channel"), 0x80); + identifier = l2capinbuf[9]; + l2cap_set_flag(L2CAP_FLAG_DISCONNECT_INTERRUPT_RESPONSE); + } + } +#ifdef EXTRADEBUG + else { + identifier = l2capinbuf[9]; + Notify(PSTR("\r\nL2CAP Unknown Signaling Command: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[8], 0x80); + } +#endif + } else if(l2capinbuf[6] == interrupt_dcid[0] && l2capinbuf[7] == interrupt_dcid[1]) { // l2cap_interrupt +#ifdef PRINTREPORT + Notify(PSTR("\r\nL2CAP Interrupt: "), 0x80); + for(uint16_t i = 0; i < ((uint16_t)l2capinbuf[5] << 8 | l2capinbuf[4]); i++) { + D_PrintHex<uint8_t > (l2capinbuf[i + 8], 0x80); + Notify(PSTR(" "), 0x80); + } +#endif + if(l2capinbuf[8] == 0xA1) { // HID_THDR_DATA_INPUT + uint16_t length = ((uint16_t)l2capinbuf[5] << 8 | l2capinbuf[4]); + ParseBTHIDData((uint8_t)(length - 1), &l2capinbuf[9]); + + switch(l2capinbuf[9]) { + case 0x01: // Keyboard or Joystick events + if(pRptParser[KEYBOARD_PARSER_ID]) + pRptParser[KEYBOARD_PARSER_ID]->Parse(reinterpret_cast<HID *>(this), 0, (uint8_t)(length - 2), &l2capinbuf[10]); // Use reinterpret_cast again to extract the instance + break; + + case 0x02: // Mouse events + if(pRptParser[MOUSE_PARSER_ID]) + pRptParser[MOUSE_PARSER_ID]->Parse(reinterpret_cast<HID *>(this), 0, (uint8_t)(length - 2), &l2capinbuf[10]); // Use reinterpret_cast again to extract the instance + break; +#ifdef EXTRADEBUG + default: + Notify(PSTR("\r\nUnknown Report type: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[9], 0x80); + break; +#endif + } + } + } else if(l2capinbuf[6] == control_dcid[0] && l2capinbuf[7] == control_dcid[1]) { // l2cap_control +#ifdef PRINTREPORT + Notify(PSTR("\r\nL2CAP Control: "), 0x80); + for(uint16_t i = 0; i < ((uint16_t)l2capinbuf[5] << 8 | l2capinbuf[4]); i++) { + D_PrintHex<uint8_t > (l2capinbuf[i + 8], 0x80); + Notify(PSTR(" "), 0x80); + } +#endif + } +#ifdef EXTRADEBUG + else { + Notify(PSTR("\r\nUnsupported L2CAP Data - Channel ID: "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[7], 0x80); + Notify(PSTR(" "), 0x80); + D_PrintHex<uint8_t > (l2capinbuf[6], 0x80); + + Notify(PSTR("\r\nData: "), 0x80); + Notify(PSTR("\r\n"), 0x80); + for(uint16_t i = 0; i < ((uint16_t)l2capinbuf[5] << 8 | l2capinbuf[4]); i++) { + D_PrintHex<uint8_t > (l2capinbuf[i + 8], 0x80); + Notify(PSTR(" "), 0x80); + } + } +#endif + L2CAP_task(); + } +} + +void BTHID::L2CAP_task() { + switch(l2cap_state) { + /* These states are used if the HID device is the host */ + case L2CAP_CONTROL_SUCCESS: + if(l2cap_check_flag(L2CAP_FLAG_CONFIG_CONTROL_SUCCESS)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nHID Control Successfully Configured"), 0x80); +#endif + setProtocol(); // Set protocol before establishing HID interrupt channel + l2cap_state = L2CAP_INTERRUPT_SETUP; + } + break; + + case L2CAP_INTERRUPT_SETUP: + if(l2cap_check_flag(L2CAP_FLAG_CONNECTION_INTERRUPT_REQUEST)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nHID Interrupt Incoming Connection Request"), 0x80); +#endif + pBtd->l2cap_connection_response(hci_handle, identifier, interrupt_dcid, interrupt_scid, PENDING); + delay(1); + pBtd->l2cap_connection_response(hci_handle, identifier, interrupt_dcid, interrupt_scid, SUCCESSFUL); + identifier++; + delay(1); + pBtd->l2cap_config_request(hci_handle, identifier, interrupt_scid); + + l2cap_state = L2CAP_INTERRUPT_CONFIG_REQUEST; + } + break; + + /* These states are used if the Arduino is the host */ + case L2CAP_CONTROL_CONNECT_REQUEST: + if(l2cap_check_flag(L2CAP_FLAG_CONTROL_CONNECTED)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nSend HID Control Config Request"), 0x80); +#endif + identifier++; + pBtd->l2cap_config_request(hci_handle, identifier, control_scid); + l2cap_state = L2CAP_CONTROL_CONFIG_REQUEST; + } + break; + + case L2CAP_CONTROL_CONFIG_REQUEST: + if(l2cap_check_flag(L2CAP_FLAG_CONFIG_CONTROL_SUCCESS)) { + setProtocol(); // Set protocol before establishing HID interrupt channel + delay(1); // Short delay between commands - just to be sure +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nSend HID Interrupt Connection Request"), 0x80); +#endif + identifier++; + pBtd->l2cap_connection_request(hci_handle, identifier, interrupt_dcid, HID_INTR_PSM); + l2cap_state = L2CAP_INTERRUPT_CONNECT_REQUEST; + } + break; + + case L2CAP_INTERRUPT_CONNECT_REQUEST: + if(l2cap_check_flag(L2CAP_FLAG_INTERRUPT_CONNECTED)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nSend HID Interrupt Config Request"), 0x80); +#endif + identifier++; + pBtd->l2cap_config_request(hci_handle, identifier, interrupt_scid); + l2cap_state = L2CAP_INTERRUPT_CONFIG_REQUEST; + } + break; + + case L2CAP_INTERRUPT_CONFIG_REQUEST: + if(l2cap_check_flag(L2CAP_FLAG_CONFIG_INTERRUPT_SUCCESS)) { // Now the HID channels is established +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nHID Channels Established"), 0x80); +#endif + pBtd->connectToHIDDevice = false; + pBtd->pairWithHIDDevice = false; + connected = true; + onInit(); + l2cap_state = L2CAP_DONE; + } + break; + + case L2CAP_DONE: + break; + + case L2CAP_INTERRUPT_DISCONNECT: + if(l2cap_check_flag(L2CAP_FLAG_DISCONNECT_INTERRUPT_RESPONSE)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nDisconnected Interrupt Channel"), 0x80); +#endif + identifier++; + pBtd->l2cap_disconnection_request(hci_handle, identifier, control_scid, control_dcid); + l2cap_state = L2CAP_CONTROL_DISCONNECT; + } + break; + + case L2CAP_CONTROL_DISCONNECT: + if(l2cap_check_flag(L2CAP_FLAG_DISCONNECT_CONTROL_RESPONSE)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nDisconnected Control Channel"), 0x80); +#endif + pBtd->hci_disconnect(hci_handle); + hci_handle = -1; // Reset handle + l2cap_event_flag = 0; // Reset flags + l2cap_state = L2CAP_WAIT; + } + break; + } +} + +void BTHID::Run() { + switch(l2cap_state) { + case L2CAP_WAIT: + if(pBtd->connectToHIDDevice && !pBtd->l2capConnectionClaimed && !connected && !activeConnection) { + pBtd->l2capConnectionClaimed = true; + activeConnection = true; +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nSend HID Control Connection Request"), 0x80); +#endif + hci_handle = pBtd->hci_handle; // Store the HCI Handle for the connection + l2cap_event_flag = 0; // Reset flags + identifier = 0; + pBtd->l2cap_connection_request(hci_handle, identifier, control_dcid, HID_CTRL_PSM); + l2cap_state = L2CAP_CONTROL_CONNECT_REQUEST; + } else if(l2cap_check_flag(L2CAP_FLAG_CONNECTION_CONTROL_REQUEST)) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nHID Control Incoming Connection Request"), 0x80); +#endif + pBtd->l2cap_connection_response(hci_handle, identifier, control_dcid, control_scid, PENDING); + delay(1); + pBtd->l2cap_connection_response(hci_handle, identifier, control_dcid, control_scid, SUCCESSFUL); + identifier++; + delay(1); + pBtd->l2cap_config_request(hci_handle, identifier, control_scid); + l2cap_state = L2CAP_CONTROL_SUCCESS; + } + break; + } +} + +/************************************************************/ +/* HID Commands */ + +/************************************************************/ +void BTHID::setProtocol() { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nSet protocol mode: "), 0x80); + D_PrintHex<uint8_t > (protocolMode, 0x80); +#endif + if (protocolMode != HID_BOOT_PROTOCOL && protocolMode != HID_RPT_PROTOCOL) { +#ifdef DEBUG_USB_HOST + Notify(PSTR("\r\nNot a valid protocol mode. Using Boot protocol instead."), 0x80); +#endif + protocolMode = HID_BOOT_PROTOCOL; // Use Boot Protocol by default + } + uint8_t command = 0x70 | protocolMode; // Set Protocol, see Bluetooth HID specs page 33 + pBtd->L2CAP_Command(hci_handle, &command, 1, control_scid[0], control_scid[1]); +} + +void BTHID::setLeds(uint8_t data) { + uint8_t buf[3]; + buf[0] = 0xA2; // HID BT DATA_request (0xA0) | Report Type (Output 0x02) + buf[1] = 0x01; // Report ID + buf[2] = data; + pBtd->L2CAP_Command(hci_handle, buf, 3, interrupt_scid[0], interrupt_scid[1]); +} |