uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key) {
uint8_t shift = (mod & 0x22);
uint8_t ctrl = (mod & 0x11);
// [a-z]
if (VALUE_WITHIN(key, 0x04, 0x1d)) {
// [^a-^z]
if (ctrl) return (key - 3);
// Upper case letters
if ((kbdLockingKeys.kbdLeds.bmCapsLock == 0 && shift) ||
(kbdLockingKeys.kbdLeds.bmCapsLock == 1 && shift == 0))
return (key - 4 + 'A');
// Lower case letters
else
return (key - 4 + 'a');
}// Numbers
else if (VALUE_WITHIN(key, 0x1e, 0x27)) {
if (ctrl && (key == 0x23)) return (0x1E); /* RS ^^ */
if (shift)
return ((uint8_t)pgm_read_byte(&getNumKeys()[key - 0x1e]));
else
return ((key == UHS_HID_BOOT_KEY_ZERO) ? '0' : key - 0x1e + '1');
}// Keypad Numbers
else if(VALUE_WITHIN(key, 0x59, 0x61)) {
if(kbdLockingKeys.kbdLeds.bmNumLock == 1)
return (key - 0x59 + '1');
} else if(VALUE_WITHIN(key, 0x2d, 0x38)) {
if (ctrl) {
switch (key) {
case 0x2d: return (0x1f); /* US ^_ */
case 0x2f: return (0x1b); /* ESC ^[ */
case 0x30: return (0x1d); /* GS ^] */
case 0x31: return (0x1c); /* FS ^\ */
default: return (0x00);
}
}
return ((shift) ? (uint8_t)pgm_read_byte(&getSymKeysUp()[key - 0x2d]) : (uint8_t)pgm_read_byte(&getSymKeysLo()[key - 0x2d]));
} else if(VALUE_WITHIN(key, 0x54, 0x58))
return (uint8_t)pgm_read_byte(&getPadKeys()[key - 0x54]);
else {
switch(key) {
case UHS_HID_BOOT_KEY_SPACE: return (0x20);
case UHS_HID_BOOT_KEY_ENTER: return (0x0d);
case UHS_HID_BOOT_KEY_ESCAPE: return (0x1b);
case UHS_HID_BOOT_KEY_DELETE: return (0x08);
case UHS_HID_BOOT_KEY_DELETE_FORWARD: return (0x7f);
case UHS_HID_BOOT_KEY_TAB: return (0x09);
case UHS_HID_BOOT_KEY_ZERO2: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '0': 0);
case UHS_HID_BOOT_KEY_PERIOD: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '.': 0);
}
}
return ( 0);
}
uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key) {
uint8_t shift = (mod & 0x22);
// [a-z]
if (VALUE_WITHIN(key, 0x04, 0x1d)) {
// 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 (VALUE_WITHIN(key, 0x1e, 0x27)) {
if (shift)
return ((uint8_t)pgm_read_byte(&getNumKeys()[key - 0x1e]));
else
return ((key == UHS_HID_BOOT_KEY_ZERO) ? '0' : key - 0x1e + '1');
}// Keypad Numbers
else if(VALUE_WITHIN(key, 0x59, 0x61)) {
if(kbdLockingKeys.kbdLeds.bmNumLock == 1)
return (key - 0x59 + '1');
} else if(VALUE_WITHIN(key, 0x2d, 0x38))
return ((shift) ? (uint8_t)pgm_read_byte(&getSymKeysUp()[key - 0x2d]) : (uint8_t)pgm_read_byte(&getSymKeysLo()[key - 0x2d]));
else if(VALUE_WITHIN(key, 0x54, 0x58))
return (uint8_t)pgm_read_byte(&getPadKeys()[key - 0x54]);
else {
switch(key) {
case UHS_HID_BOOT_KEY_SPACE: return (0x20);
case UHS_HID_BOOT_KEY_ENTER: return (0x13);
case UHS_HID_BOOT_KEY_ZERO2: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '0': 0);
case UHS_HID_BOOT_KEY_PERIOD: return ((kbdLockingKeys.kbdLeds.bmNumLock == 1) ? '.': 0);
}
}
return ( 0);
}
