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Arduino/hardware/arduino/sam/libraries/USBHost/hidboot.cpp

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/* Copyright (C) 2011 Circuits At Home, LTD. 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
-------------------
Circuits At Home, LTD
Web : http://www.circuitsathome.com
e-mail : support@circuitsathome.com
*/
#include "hidboot.h"
/**
* \brief Parse HID mouse report.
*
* \param hid HID device pointer.
* \param is_rpt_id True if this is a report ID.
* \param len Buffer length.
* \param buf Buffer containing report data.
*/
void MouseReportParser::Parse(HID *hid, bool is_rpt_id, uint32_t len, uint8_t *buf)
{
MOUSEINFO *pmi = (MOUSEINFO*)buf;
if (prevState.mouseInfo.bmLeftButton == 0 && pmi->bmLeftButton == 1)
OnLeftButtonDown(pmi);
if (prevState.mouseInfo.bmLeftButton == 1 && pmi->bmLeftButton == 0)
OnLeftButtonUp(pmi);
if (prevState.mouseInfo.bmRightButton == 0 && pmi->bmRightButton == 1)
OnRightButtonDown(pmi);
if (prevState.mouseInfo.bmRightButton == 1 && pmi->bmRightButton == 0)
OnRightButtonUp(pmi);
if (prevState.mouseInfo.bmMiddleButton == 0 && pmi->bmMiddleButton == 1)
OnMiddleButtonDown(pmi);
if (prevState.mouseInfo.bmMiddleButton == 1 && pmi->bmMiddleButton == 0)
OnMiddleButtonUp(pmi);
if (prevState.mouseInfo.dX != pmi->dX || prevState.mouseInfo.dY != pmi->dY)
OnMouseMove(pmi);
for (uint32_t i = 0; i < 3; ++i)
prevState.bInfo[i] = buf[i];
};
/**
* \brief Parse HID keyboard report.
*
* \param hid HID device pointer.
* \param is_rpt_id True if this is a report ID.
* \param len Buffer length.
* \param buf Buffer containing report data.
*/
void KeyboardReportParser::Parse(HID *hid, bool is_rpt_id, uint32_t len, uint8_t *buf)
{
// On error - return
if (buf[2] == 1)
return;
//KBDINFO *pki = (KBDINFO*)buf;
for (uint32_t i = 2; i < 8; ++i)
{
bool down = false;
bool up = false;
for (uint8_t j=2; j<8; j++)
{
if (buf[i] == prevState.bInfo[j] && buf[i] != 1)
down = true;
if (buf[j] == prevState.bInfo[i] && prevState.bInfo[i] != 1)
up = true;
}
if (!down)
{
HandleLockingKeys(hid, buf[i]);
OnKeyDown(*buf, buf[i]);
}
if (!up)
OnKeyUp(prevState.bInfo[0], prevState.bInfo[i]);
}
for (uint32_t i = 0; i < 8; ++i)
prevState.bInfo[i] = buf[i];
};
/**
* \brief Handle keyboard locking keys and manage keyboard leds using USB
* report.
*
* \param hid HID device pointer.
* \param key Locking key.
*
* \return 0 on success, error code otherwise.
*/
uint8_t KeyboardReportParser::HandleLockingKeys(HID *hid, uint8_t key)
{
uint8_t old_keys = kbdLockingKeys.bLeds;
switch (key)
{
case KEY_NUM_LOCK:
kbdLockingKeys.kbdLeds.bmNumLock = ~kbdLockingKeys.kbdLeds.bmNumLock;
break;
case KEY_CAPS_LOCK:
kbdLockingKeys.kbdLeds.bmCapsLock = ~kbdLockingKeys.kbdLeds.bmCapsLock;
break;
case KEY_SCROLL_LOCK:
kbdLockingKeys.kbdLeds.bmScrollLock = ~kbdLockingKeys.kbdLeds.bmScrollLock;
break;
}
if (old_keys != kbdLockingKeys.bLeds && hid)
return (hid->SetReport(0, 0/*hid->GetIface()*/, 2, 0, 1, &kbdLockingKeys.bLeds));
return 0;
}
const uint8_t KeyboardReportParser::numKeys[] = { '!', '@', '#', '$', '%', '^', '&', '*', '(', ')' };
const uint8_t KeyboardReportParser::symKeysUp[] = { '_', '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?' };
const uint8_t KeyboardReportParser::symKeysLo[] = { '-', '=', '[', ']', '\\', ' ', ';', '\'', '`', ',', '.', '/' };
const uint8_t KeyboardReportParser::padKeys[] = { '/', '*', '-', '+', 0x13 };
/**
* \brief Manage keyboard OEM to ASCII conversion.
*
* \param mod Keyboard modifier.
* \param key Key value to convert.
*
* \return Keyboard corresponding ASCII value on success, 0 otherwise.
*/
uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key)
{
uint8_t shift = (mod & 0x22);
// [a-z]
if (key > 0x03 && key < 0x1e)
{
// Upper case letters
if ( (kbdLockingKeys.kbdLeds.bmCapsLock == 0 && (mod & 2)) ||
(kbdLockingKeys.kbdLeds.bmCapsLock == 1 && (mod & 2) == 0) )
return (key - 4 + 'A');
// Lower case letters
else
return (key - 4 + 'a');
}
// Numbers
else if (key > 0x1d && key < 0x27)
{
if (shift)
return (numKeys[key - 0x1e]);
else
return (key - 0x1e + '1');
}
// Keypad Numbers
else if (key > 0x58 && key < 0x62)
{
if (kbdLockingKeys.kbdLeds.bmNumLock == 1)
return (key - 0x59 + '1');
}
else if (key > 0x2c && key < 0x39)
return ((shift) ? symKeysUp[key-0x2d] : symKeysLo[key-0x2d]);
else if (key > 0x53 && key < 0x59)
return padKeys[key - 0x54];
else
{
switch (key)
{
case KEY_SPACE: return (0x20);
case KEY_ENTER: return (0x13);
case KEY_ZERO: return ((shift) ? ')' : '0');
case KEY_ZERO2: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '0' : 0);
case KEY_PERIOD: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '.' : 0);
}
}
return 0;
}