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