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