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HID.cpp
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/* Copyright (c) 2011, Peter Barrett
**
** Permission to use, copy, modify, and/or distribute this software for
** any purpose with or without fee is hereby granted, provided that the
** above copyright notice and this permission notice appear in all copies.
**
** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
** BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
** OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
** WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
** ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
** SOFTWARE.
*/
#include "Platform.h"
#include "USBAPI.h"
#include "USBDesc.h"
#if defined(USBCON)
#ifdef HID_ENABLED
//#define RAWHID_ENABLED
// Singletons for mouse and keyboard
Mouse_ Mouse;
Keyboard_ Keyboard;
//================================================================================
//================================================================================
// HID report descriptor
#define LSB(_x) ((_x) & 0xFF)
#define MSB(_x) ((_x) >> 8)
#define RAWHID_USAGE_PAGE 0xFFC0
#define RAWHID_USAGE 0x0C00
#define RAWHID_TX_SIZE 64
#define RAWHID_RX_SIZE 64
extern const u8 _hidReportDescriptor[] PROGMEM;
const u8 _hidReportDescriptor[] = {
// Mouse
0x05, 0x01, // USAGE_PAGE (Generic Desktop) // 54
0x09, 0x02, // USAGE (Mouse)
0xa1, 0x01, // COLLECTION (Application)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x00, // COLLECTION (Physical)
0x85, 0x01, // REPORT_ID (1)
0x05, 0x09, // USAGE_PAGE (Button)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
0x29, 0x03, // USAGE_MAXIMUM (Button 3)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x95, 0x03, // REPORT_COUNT (3)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x05, // REPORT_SIZE (5)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x09, 0x38, // USAGE (Wheel)
0x15, 0x81, // LOGICAL_MINIMUM (-127)
0x25, 0x7f, // LOGICAL_MAXIMUM (127)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x03, // REPORT_COUNT (3)
0x81, 0x06, // INPUT (Data,Var,Rel)
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
// Keyboard
0x05, 0x01, // USAGE_PAGE (Generic Desktop) // 47
0x09, 0x06, // USAGE (Keyboard)
0xa1, 0x01, // COLLECTION (Application)
0x85, 0x02, // REPORT_ID (2)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x75, 0x01, // REPORT_SIZE (1)
0x95, 0x08, // REPORT_COUNT (8)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x03, // INPUT (Cnst,Var,Abs)
0x95, 0x06, // REPORT_COUNT (6)
0x75, 0x08, // REPORT_SIZE (8)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x65, // LOGICAL_MAXIMUM (101)
0x05, 0x07, // USAGE_PAGE (Keyboard)
0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
0x81, 0x00, // INPUT (Data,Ary,Abs)
0xc0, // END_COLLECTION
#if RAWHID_ENABLED
// RAW HID
0x06, LSB(RAWHID_USAGE_PAGE), MSB(RAWHID_USAGE_PAGE), // 30
0x0A, LSB(RAWHID_USAGE), MSB(RAWHID_USAGE),
0xA1, 0x01, // Collection 0x01
0x85, 0x03, // REPORT_ID (3)
0x75, 0x08, // report size = 8 bits
0x15, 0x00, // logical minimum = 0
0x26, 0xFF, 0x00, // logical maximum = 255
0x95, 64, // report count TX
0x09, 0x01, // usage
0x81, 0x02, // Input (array)
0x95, 64, // report count RX
0x09, 0x02, // usage
0x91, 0x02, // Output (array)
0xC0 // end collection
#endif
};
extern const HIDDescriptor _hidInterface PROGMEM;
const HIDDescriptor _hidInterface =
{
D_INTERFACE(HID_INTERFACE,1,3,0,0),
D_HIDREPORT(sizeof(_hidReportDescriptor)),
D_ENDPOINT(USB_ENDPOINT_IN (HID_ENDPOINT_INT),USB_ENDPOINT_TYPE_INTERRUPT,0x40,0x01)
};
//================================================================================
//================================================================================
// Driver
u8 _hid_protocol = 1;
u8 _hid_idle = 1;
#define WEAK __attribute__ ((weak))
int WEAK HID_GetInterface(u8* interfaceNum)
{
interfaceNum[0] += 1; // uses 1
return USB_SendControl(TRANSFER_PGM,&_hidInterface,sizeof(_hidInterface));
}
int WEAK HID_GetDescriptor(int i)
{
return USB_SendControl(TRANSFER_PGM,_hidReportDescriptor,sizeof(_hidReportDescriptor));
}
void WEAK HID_SendReport(u8 id, const void* data, int len)
{
USB_Send(HID_TX, &id, 1);
USB_Send(HID_TX | TRANSFER_RELEASE,data,len);
}
bool WEAK HID_Setup(Setup& setup)
{
u8 r = setup.bRequest;
u8 requestType = setup.bmRequestType;
if (REQUEST_DEVICETOHOST_CLASS_INTERFACE == requestType)
{
if (HID_GET_REPORT == r)
{
//HID_GetReport();
return true;
}
if (HID_GET_PROTOCOL == r)
{
//Send8(_hid_protocol); // TODO
return true;
}
}
if (REQUEST_HOSTTODEVICE_CLASS_INTERFACE == requestType)
{
if (HID_SET_PROTOCOL == r)
{
_hid_protocol = setup.wValueL;
return true;
}
if (HID_SET_IDLE == r)
{
_hid_idle = setup.wValueL;
return true;
}
}
return false;
}
//================================================================================
//================================================================================
// Mouse
Mouse_::Mouse_(void) : _buttons(0)
{
}
void Mouse_::begin(void)
{
}
void Mouse_::end(void)
{
}
void Mouse_::click(uint8_t b)
{
_buttons = b;
move(0,0,0);
_buttons = 0;
move(0,0,0);
}
void Mouse_::move(signed char x, signed char y, signed char wheel)
{
u8 m[4];
m[0] = _buttons;
m[1] = x;
m[2] = y;
m[3] = wheel;
HID_SendReport(1,m,4);
}
void Mouse_::buttons(uint8_t b)
{
if (b != _buttons)
{
_buttons = b;
move(0,0,0);
}
}
void Mouse_::press(uint8_t b)
{
buttons(_buttons | b);
}
void Mouse_::release(uint8_t b)
{
buttons(_buttons & ~b);
}
bool Mouse_::isPressed(uint8_t b)
{
if ((b & _buttons) > 0)
return true;
return false;
}
//================================================================================
//================================================================================
// Keyboard
Keyboard_::Keyboard_(void)
{
}
void Keyboard_::begin(void)
{
setKmap(DEFAULT_KMAP);
}
void Keyboard_::begin(uint8_t kmap)
{
setKmap(kmap);
}
void Keyboard_::end(void)
{
}
void Keyboard_::setKmap(uint8_t lang)
{
_kmap = lang;
}
void Keyboard_::sendReport(KeyReport* keys)
{
HID_SendReport(2,keys,sizeof(KeyReport));
}
extern
const uint16_t _asciimap[256] PROGMEM;
#define SHIFT 0x0100
#define ALTGR 0x0200
#define DK 0x0400
const uint16_t _asciimap[256] =
{
/* 000 0x000 */ 0x00, 0x00, // NUL
/* 001 0x001 */ 0x00, 0x00, // SOH
/* 002 0x002 */ 0x00, 0x00, // STX
/* 003 0x003 */ 0x00, 0x00, // ETX
/* 004 0x004 */ 0x00, 0x00, // EOT
/* 005 0x005 */ 0x00, 0x00, // ENQ
/* 006 0x006 */ 0x00, 0x00, // ACK
/* 007 0x007 */ 0x00, 0x00, // BEL
/* 008 0x008 */ 0x2a, 0x2a, // BS Backspace
/* 009 0x009 */ 0x2b, 0x2b, // TAB Tab
/* 010 0x00A */ 0x28, 0x28, // LF Enter
/* 011 0x00B */ 0x00, 0x00, // VT
/* 012 0x00C */ 0x00, 0x00, // FF
/* 013 0x00D */ 0x00, 0x00, // CR
/* 014 0x00E */ 0x00, 0x00, // SO
/* 015 0x00F */ 0x00, 0x00, // SI
/* 016 0x010 */ 0x00, 0x00, // DEL
/* 017 0x011 */ 0x00, 0x00, // DC1
/* 018 0x012 */ 0x00, 0x00, // DC2
/* 019 0x013 */ 0x00, 0x00, // DC3
/* 020 0x014 */ 0x00, 0x00, // DC4
/* 021 0x015 */ 0x00, 0x00, // NAK
/* 022 0x016 */ 0x00, 0x00, // SYN
/* 023 0x017 */ 0x00, 0x00, // ETB
/* 024 0x018 */ 0x00, 0x00, // CAN
/* 025 0x019 */ 0x00, 0x00, // EM
/* 026 0x01A */ 0x00, 0x00, // SUB
/* 027 0x01B */ 0x00, 0x00, // ESC
/* 028 0x01C */ 0x00, 0x00, // FS
/* 029 0x01D */ 0x00, 0x00, // GS
/* 030 0x01E */ 0x00, 0x00, // RS
/* 031 0x01F */ 0x00, 0x00, // US
/* 032 0x020 */ 0x2c, 0x2c, // ' '
/* 033 0x021 */ 0x1e|SHIFT, 0x1e|SHIFT, // !
/* 034 0x022 */ 0x34|SHIFT, 0x1f|SHIFT, // "
/* 035 0x023 */ 0x20|SHIFT, 0x20|ALTGR, // #
/* 036 0x024 */ 0x21|SHIFT, 0x21|SHIFT, // $
/* 037 0x025 */ 0x22|SHIFT, 0x22|SHIFT, // %
/* 038 0x026 */ 0x24|SHIFT, 0x23|SHIFT, // &
/* 039 0x027 */ 0x34, 0x2d, // '
/* 040 0x028 */ 0x26|SHIFT, 0x25|SHIFT, // (
/* 041 0x029 */ 0x27|SHIFT, 0x26|SHIFT, // )
/* 042 0x02A */ 0x25|SHIFT, 0x30|SHIFT, // *
/* 043 0x02B */ 0x2e|SHIFT, 0x30, // +
/* 044 0x02C */ 0x36, 0x36, // ,
/* 045 0x02D */ 0x2d, 0x38, // - //33 = ñ
/* 046 0x02E */ 0x37, 0x37, // .
/* 047 0x02F */ 0x38, 0x24|SHIFT, // /
/* 048 0x030 */ 0x27, 0x27, // 0
/* 049 0x031 */ 0x1e, 0x1e, // 1
/* 050 0x032 */ 0x1f, 0x1f, // 2
/* 051 0x033 */ 0x20, 0x20, // 3
/* 052 0x034 */ 0x21, 0x21, // 4
/* 053 0x035 */ 0x22, 0x22, // 5
/* 054 0x036 */ 0x23, 0x23, // 6
/* 055 0x037 */ 0x24, 0x24, // 7
/* 056 0x038 */ 0x25, 0x25, // 8
/* 057 0x039 */ 0x26, 0x26, // 9
/* 058 0x03A */ 0x33|SHIFT, 0x37|SHIFT, // :
/* 059 0x03B */ 0x33, 0x36|SHIFT, // ;
/* 060 0x03C */ 0x36|SHIFT, 0x64, // <
/* 061 0x03D */ 0x2e, 0x27|SHIFT, // =
/* 062 0x03E */ 0x37|SHIFT, 0x64|SHIFT, // >
/* 063 0x03F */ 0x38|SHIFT, 0x2d|SHIFT, // ?
/* 064 0x040 */ 0x1f|SHIFT, 0x1f|ALTGR, // @
/* 065 0x041 */ 0x04|SHIFT, 0x04|SHIFT, // A
/* 066 0x042 */ 0x05|SHIFT, 0x05|SHIFT, // B
/* 067 0x043 */ 0x06|SHIFT, 0x06|SHIFT, // C
/* 068 0x044 */ 0x07|SHIFT, 0x07|SHIFT, // D
/* 069 0x045 */ 0x08|SHIFT, 0x08|SHIFT, // E
/* 070 0x046 */ 0x09|SHIFT, 0x09|SHIFT, // F
/* 071 0x047 */ 0x0a|SHIFT, 0x0a|SHIFT, // G
/* 072 0x048 */ 0x0b|SHIFT, 0x0b|SHIFT, // H
/* 073 0x049 */ 0x0c|SHIFT, 0x0c|SHIFT, // I
/* 074 0x04A */ 0x0d|SHIFT, 0x0d|SHIFT, // J
/* 075 0x04B */ 0x0e|SHIFT, 0x0e|SHIFT, // K
/* 076 0x04C */ 0x0f|SHIFT, 0x0f|SHIFT, // L
/* 077 0x04D */ 0x10|SHIFT, 0x10|SHIFT, // M
/* 078 0x04E */ 0x11|SHIFT, 0x11|SHIFT, // N
/* 079 0x04F */ 0x12|SHIFT, 0x12|SHIFT, // O
/* 080 0x050 */ 0x13|SHIFT, 0x13|SHIFT, // P
/* 081 0x051 */ 0x14|SHIFT, 0x14|SHIFT, // Q
/* 082 0x052 */ 0x15|SHIFT, 0x15|SHIFT, // R
/* 083 0x053 */ 0x16|SHIFT, 0x16|SHIFT, // S
/* 084 0x054 */ 0x17|SHIFT, 0x17|SHIFT, // T
/* 085 0x055 */ 0x18|SHIFT, 0x18|SHIFT, // U
/* 086 0x056 */ 0x19|SHIFT, 0x19|SHIFT, // V
/* 087 0x057 */ 0x1a|SHIFT, 0x1a|SHIFT, // W
/* 088 0x058 */ 0x1b|SHIFT, 0x1b|SHIFT, // X
/* 089 0x059 */ 0x1c|SHIFT, 0x1c|SHIFT, // Y
/* 090 0x05A */ 0x1d|SHIFT, 0x1d|SHIFT, // Z
/* 091 0x05B */ 0x2f, 0x2f|ALTGR, // [
/* 092 0x05C */ 0x31, 0x35|ALTGR, // bslash
/* 093 0x05D */ 0x30, 0x30|ALTGR, // ]
/* 094 0x05E */ 0x23|SHIFT, 0x2f|SHIFT|DK, // ^
/* 095 0x05F */ 0x2d|SHIFT, 0x38|SHIFT, // _
/* 096 0x060 */ 0x35, 0x2f|DK, // `
/* 097 0x061 */ 0x04, 0x04, // a
/* 098 0x062 */ 0x05, 0x05, // b
/* 099 0x063 */ 0x06, 0x06, // c
/* 100 0x064 */ 0x07, 0x07, // d
/* 101 0x065 */ 0x08, 0x08, // e
/* 102 0x066 */ 0x09, 0x09, // f
/* 103 0x067 */ 0x0a, 0x0a, // g
/* 104 0x068 */ 0x0b, 0x0b, // h
/* 105 0x069 */ 0x0c, 0x0c, // i
/* 106 0x06A */ 0x0d, 0x0d, // j
/* 107 0x06B */ 0x0e, 0x0e, // k
/* 108 0x06C */ 0x0f, 0x0f, // l
/* 109 0x06D */ 0x10, 0x10, // m
/* 110 0x06E */ 0x11, 0x11, // n
/* 111 0x06F */ 0x12, 0x12, // o
/* 112 0x070 */ 0x13, 0x13, // p
/* 113 0x071 */ 0x14, 0x14, // q
/* 114 0x072 */ 0x15, 0x15, // r
/* 115 0x073 */ 0x16, 0x16, // s
/* 116 0x074 */ 0x17, 0x17, // t
/* 117 0x075 */ 0x18, 0x18, // u
/* 118 0x076 */ 0x19, 0x19, // v
/* 119 0x077 */ 0x1a, 0x1a, // w
/* 120 0x078 */ 0x1b, 0x1b, // x
/* 121 0x079 */ 0x1c, 0x1c, // y
/* 122 0x07A */ 0x1d, 0x1d, // z
/* 123 0x07B */ 0x2f|SHIFT, 0x34|ALTGR, // { ****
/* 124 0x07C */ 0x31|SHIFT, 0x1e|ALTGR, // |
/* 125 0x07D */ 0x30|SHIFT, 0x31|ALTGR, // }
/* 126 0x07E */ 0x35|SHIFT, 0x21|ALTGR, // ~
/* 127 0x07F */ 0, 0 // DEL
};
uint8_t USBPutChar(uint8_t c);
// press() adds the specified key (printing, non-printing, or modifier)
// to the persistent key report and sends the report. Because of the way
// USB HID works, the host acts like the key remains pressed until we
// call release(), releaseAll(), or otherwise clear the report and resend.
size_t Keyboard_::press(uint8_t in)
{
uint16_t k;
uint8_t wasDeadKey = 0;
if (in >= 136) { // it's a non-printing key (not a modifier)
k = in - 136;
} else if (in >= 128) { // it's a modifier key
_keyReport.modifiers |= (1<<(in-128));
k = 0;
} else { // it's a printing key
k = pgm_read_word(_asciimap + in * 2 + _kmap);
if (!k) {
setWriteError();
return 0;
}
if (k & SHIFT) {
_keyReport.modifiers |= KEY_MODIFIER_LEFT_SHIFT;
k &= ~SHIFT;
}
if (k & ALTGR) {
_keyReport.modifiers |= KEY_MODIFIER_RIGHT_ALT;
k &= ~ALTGR;
}
if (k & DK) {
k &= ~DK;
wasDeadKey = 1;
}
}
if (!addToReport(k))
return 0;
sendReport(&_keyReport);
if (wasDeadKey){
write(' ');
}
return 1;
}
uint8_t Keyboard_::addToReport(uint8_t k)
{
uint8_t i;
// Add k to the key report only if it's not already present
// and if there is an empty slot.
if (_keyReport.keys[0] != k && _keyReport.keys[1] != k &&
_keyReport.keys[2] != k && _keyReport.keys[3] != k &&
_keyReport.keys[4] != k && _keyReport.keys[5] != k) {
for (i=0; i<6; i++) {
if (_keyReport.keys[i] == 0x00) {
_keyReport.keys[i] = k;
break;
}
}
if (i == 6) {
setWriteError();
return 0;
}
}
return 1;
}
// release() takes the specified key out of the persistent key report and
// sends the report. This tells the OS the key is no longer pressed and that
// it shouldn't be repeated any more.
size_t Keyboard_::release(uint8_t in)
{
uint16_t k;
if (in >= 136) { // it's a non-printing key (not a modifier)
k = in - 136;
} else if (in >= 128) { // it's a modifier key
_keyReport.modifiers &= ~(1<<(in-128));
k = 0;
} else { // it's a printing key
k = pgm_read_word(_asciimap + in * 2 + _kmap);
if (!k) {
return 0;
}
if (k & SHIFT) {
_keyReport.modifiers &= ~KEY_MODIFIER_LEFT_SHIFT;
k &= ~SHIFT;
}
if (k & ALTGR) {
_keyReport.modifiers &= ~KEY_MODIFIER_RIGHT_ALT;
k &= ~ALTGR;
}
if (k & DK) {
k &= ~DK;
}
}
removeFromReport(k);
sendReport(&_keyReport);
return 1;
}
uint8_t Keyboard_::removeFromReport(uint8_t k){
// Test the key report to see if k is present. Clear it if it exists.
// Check all positions in case the key is present more than once (which it shouldn't be)
for (int i=0; i<6; i++) {
if (0 != k && _keyReport.keys[i] == k) {
_keyReport.keys[i] = 0x00;
}
}
return 1;
}
void Keyboard_::releaseAll(void)
{
_keyReport.keys[0] = 0;
_keyReport.keys[1] = 0;
_keyReport.keys[2] = 0;
_keyReport.keys[3] = 0;
_keyReport.keys[4] = 0;
_keyReport.keys[5] = 0;
_keyReport.modifiers = 0;
sendReport(&_keyReport);
}
size_t Keyboard_::write(uint8_t c)
{
uint8_t p = press(c); // Keydown
//uint8_t r =
release(c); // Keyup
return (p); // just return the result of press() since release() almost always returns 1
}
#endif
#endif /* if defined(USBCON) */