291 lines
7.2 KiB
C++
291 lines
7.2 KiB
C++
/*
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Copyright (c) 2014 NicoHood
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See the readme for credit to other people.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include "Keyboard.h"
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#include "Platform.h"
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//================================================================================
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// Keyboard
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//================================================================================
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extern
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const uint8_t _asciimap[128] PROGMEM;
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#define SHIFT 0x80
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const uint8_t _asciimap[128] =
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{
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0x00, // NUL
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0x00, // SOH
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0x00, // STX
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0x00, // ETX
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0x00, // EOT
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0x00, // ENQ
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0x00, // ACK
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0x00, // BEL
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0x2a, // BS Backspace
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0x2b, // TAB Tab
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0x28, // LF Enter
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0x00, // VT
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0x00, // FF
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0x00, // CR
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0x00, // SO
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0x00, // SI
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0x00, // DEL
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0x00, // DC1
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0x00, // DC2
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0x00, // DC3
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0x00, // DC4
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0x00, // NAK
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0x00, // SYN
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0x00, // ETB
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0x00, // CAN
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0x00, // EM
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0x00, // SUB
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0x00, // ESC
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0x00, // FS
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0x00, // GS
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0x00, // RS
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0x00, // US
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0x2c, // ' '
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0x1e | SHIFT, // !
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0x34 | SHIFT, // "
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0x20 | SHIFT, // #
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0x21 | SHIFT, // $
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0x22 | SHIFT, // %
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0x24 | SHIFT, // &
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0x34, // '
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0x26 | SHIFT, // (
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0x27 | SHIFT, // )
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0x25 | SHIFT, // *
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0x2e | SHIFT, // +
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0x36, // ,
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0x2d, // -
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0x37, // .
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0x38, // /
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0x27, // 0
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0x1e, // 1
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0x1f, // 2
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0x20, // 3
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0x21, // 4
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0x22, // 5
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0x23, // 6
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0x24, // 7
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0x25, // 8
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0x26, // 9
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0x33 | SHIFT, // :
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0x33, // ;
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0x36 | SHIFT, // <
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0x2e, // =
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0x37 | SHIFT, // >
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0x38 | SHIFT, // ?
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0x1f | SHIFT, // @
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0x04 | SHIFT, // A
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0x05 | SHIFT, // B
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0x06 | SHIFT, // C
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0x07 | SHIFT, // D
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0x08 | SHIFT, // E
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0x09 | SHIFT, // F
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0x0a | SHIFT, // G
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0x0b | SHIFT, // H
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0x0c | SHIFT, // I
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0x0d | SHIFT, // J
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0x0e | SHIFT, // K
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0x0f | SHIFT, // L
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0x10 | SHIFT, // M
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0x11 | SHIFT, // N
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0x12 | SHIFT, // O
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0x13 | SHIFT, // P
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0x14 | SHIFT, // Q
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0x15 | SHIFT, // R
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0x16 | SHIFT, // S
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0x17 | SHIFT, // T
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0x18 | SHIFT, // U
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0x19 | SHIFT, // V
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0x1a | SHIFT, // W
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0x1b | SHIFT, // X
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0x1c | SHIFT, // Y
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0x1d | SHIFT, // Z
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0x2f, // [
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0x31, // bslash
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0x30, // ]
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0x23 | SHIFT, // ^
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0x2d | SHIFT, // _
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0x35, // `
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0x04, // a
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0x05, // b
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0x06, // c
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0x07, // d
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0x08, // e
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0x09, // f
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0x0a, // g
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0x0b, // h
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0x0c, // i
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0x0d, // j
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0x0e, // k
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0x0f, // l
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0x10, // m
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0x11, // n
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0x12, // o
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0x13, // p
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0x14, // q
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0x15, // r
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0x16, // s
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0x17, // t
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0x18, // u
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0x19, // v
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0x1a, // w
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0x1b, // x
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0x1c, // y
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0x1d, // z
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0x2f | SHIFT, //
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0x31 | SHIFT, // |
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0x30 | SHIFT, // }
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0x35 | SHIFT, // ~
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0 // DEL
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};
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Keyboard_::Keyboard_(void)
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{
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}
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void Keyboard_::begin(void)
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{
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#ifndef USBCON
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// release all buttons for Hoodloader
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releaseAll();
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#endif
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}
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void Keyboard_::end(void)
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{
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// added here!
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releaseAll();
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}
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void Keyboard_::sendReport(KeyReport* keys)
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{
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HID_SendReport(HID_REPORTID_KeyboardReport, &_keyReport, sizeof(_keyReport));
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}
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// removed <--
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//uint8_t USBPutChar(uint8_t c);
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// press() adds the specified key (printing, non-printing, or modifier)
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// to the persistent key report and sends the report. Because of the way
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// USB HID works, the host acts like the key remains pressed until we
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// call release(), releaseAll(), or otherwise clear the report and resend.
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size_t Keyboard_::press(uint8_t k)
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{
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uint8_t i;
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if (k >= 136) { // it's a non-printing key (not a modifier)
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k = k - 136;
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}
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else if (k >= 128) { // it's a modifier key
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_keyReport.modifiers |= (1 << (k - 128));
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k = 0;
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}
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else { // it's a printing key
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k = pgm_read_byte(_asciimap + k);
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if (!k) {
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setWriteError();
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return 0;
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}
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if (k & 0x80) { // it's a capital letter or other character reached with shift
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_keyReport.modifiers |= 0x02; // the left shift modifier
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k &= 0x7F;
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}
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}
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// Add k to the key report only if it's not already present
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// and if there is an empty slot.
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if (_keyReport.keys[0] != k && _keyReport.keys[1] != k &&
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_keyReport.keys[2] != k && _keyReport.keys[3] != k &&
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_keyReport.keys[4] != k && _keyReport.keys[5] != k) {
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for (i = 0; i<6; i++) {
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if (_keyReport.keys[i] == 0x00) {
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_keyReport.keys[i] = k;
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break;
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}
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}
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if (i == 6) {
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setWriteError();
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return 0;
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}
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}
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sendReport(&_keyReport);
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return 1;
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}
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// release() takes the specified key out of the persistent key report and
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// sends the report. This tells the OS the key is no longer pressed and that
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// it shouldn't be repeated any more.
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size_t Keyboard_::release(uint8_t k)
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{
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uint8_t i;
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if (k >= 136) { // it's a non-printing key (not a modifier)
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k = k - 136;
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}
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else if (k >= 128) { // it's a modifier key
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_keyReport.modifiers &= ~(1 << (k - 128));
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k = 0;
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}
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else { // it's a printing key
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k = pgm_read_byte(_asciimap + k);
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if (!k) {
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return 0;
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}
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if (k & 0x80) { // it's a capital letter or other character reached with shift
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_keyReport.modifiers &= ~(0x02); // the left shift modifier
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k &= 0x7F;
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}
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}
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// Test the key report to see if k is present. Clear it if it exists.
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// Check all positions in case the key is present more than once (which it shouldn't be)
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for (i = 0; i<6; i++) {
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if (0 != k && _keyReport.keys[i] == k) {
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_keyReport.keys[i] = 0x00;
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}
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}
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sendReport(&_keyReport);
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return 1;
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}
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void Keyboard_::releaseAll(void)
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{
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// release all keys
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memset(&_keyReport, 0x00, sizeof(_keyReport));
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sendReport(&_keyReport);
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}
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size_t Keyboard_::write(uint8_t c)
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{
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uint8_t p = press(c); // Keydown
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release(c); // Keyup
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return (p); // just return the result of press() since release() almost always returns 1
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}
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