arduino stuffs
Diffstat (limited to 'libraries/Keyboard/src/Keyboard.cpp')
| -rw-r--r-- | libraries/Keyboard/src/Keyboard.cpp | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/libraries/Keyboard/src/Keyboard.cpp b/libraries/Keyboard/src/Keyboard.cpp new file mode 100644 index 0000000..d9fcbad --- /dev/null +++ b/libraries/Keyboard/src/Keyboard.cpp @@ -0,0 +1,214 @@ +/* + Keyboard.cpp + + Copyright (c) 2015, Arduino LLC + Original code (pre-library): Copyright (c) 2011, Peter Barrett + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include "Keyboard.h" +#include "KeyboardLayout.h" + +#if defined(_USING_HID) + +//================================================================================ +//================================================================================ +// Keyboard + +static const uint8_t _hidReportDescriptor[] PROGMEM = { + + // 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, 0x73, // LOGICAL_MAXIMUM (115) + 0x05, 0x07, // USAGE_PAGE (Keyboard) + + 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated)) + 0x29, 0x73, // USAGE_MAXIMUM (Keyboard Application) + 0x81, 0x00, // INPUT (Data,Ary,Abs) + 0xc0, // END_COLLECTION +}; + +Keyboard_::Keyboard_(void) +{ + static HIDSubDescriptor node(_hidReportDescriptor, sizeof(_hidReportDescriptor)); + HID().AppendDescriptor(&node); + _asciimap = KeyboardLayout_en_US; +} + +void Keyboard_::begin(const uint8_t *layout) +{ + _asciimap = layout; +} + +void Keyboard_::end(void) +{ +} + +void Keyboard_::sendReport(KeyReport* keys) +{ + HID().SendReport(2,keys,sizeof(KeyReport)); +} + +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 & ALT_GR) == ALT_GR) { + _keyReport.modifiers |= 0x40; // AltGr = right Alt + k &= 0x3F; + } else if ((k & SHIFT) == SHIFT) { + _keyReport.modifiers |= 0x02; // the left shift modifier + k &= 0x7F; + } + if (k == ISO_REPLACEMENT) { + k = ISO_KEY; + } + } + + // 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 & ALT_GR) == ALT_GR) { + _keyReport.modifiers &= ~(0x40); // AltGr = right Alt + k &= 0x3F; + } else if ((k & SHIFT) == SHIFT) { + _keyReport.modifiers &= ~(0x02); // the left shift modifier + k &= 0x7F; + } + if (k == ISO_REPLACEMENT) { + k = ISO_KEY; + } + } + + // 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) +{ + _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 + release(c); // Keyup + return p; // just return the result of press() since release() almost always returns 1 +} + +size_t Keyboard_::write(const uint8_t *buffer, size_t size) { + size_t n = 0; + while (size--) { + if (*buffer != '\r') { + if (write(*buffer)) { + n++; + } else { + break; + } + } + buffer++; + } + return n; +} + +Keyboard_ Keyboard; + +#endif |