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Add ASCII control codes #113

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25 changes: 21 additions & 4 deletions libraries/USBHost/src/hidboot.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -181,13 +181,16 @@ uint8_t KeyboardReportParser::HandleLockingKeys(HID *hid, uint8_t key) {
const uint8_t KeyboardReportParser::numKeys[10] = { '!', '@', '#', '$', '%', '^', '&', '*', '(', ')'};
const uint8_t KeyboardReportParser::symKeysUp[12] = { '_', '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?'};
const uint8_t KeyboardReportParser::symKeysLo[12] = { '-', '=', '[', ']', '\\', ' ', ';', '\'', '`', ',', '.', '/'};
const uint8_t KeyboardReportParser::padKeys[5] = { '/', '*', '-', '+', 0x13};
const uint8_t KeyboardReportParser::padKeys[5] = { '/', '*', '-', '+', 0x0d};
#define VALUE_WITHIN(v,l,h) (((v)>=(l)) && ((v)<=(h)))
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))
Expand All @@ -198,6 +201,7 @@ uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key) {
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
Expand All @@ -206,14 +210,27 @@ uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key) {
else if(VALUE_WITHIN(key, 0x59, 0x61)) {
if(kbdLockingKeys.kbdLeds.bmNumLock == 1)
return (key - 0x59 + '1');
} else if(VALUE_WITHIN(key, 0x2d, 0x38))
} 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))
} 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_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);
}
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4 changes: 4 additions & 0 deletions libraries/USBHost/src/hidboot.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,10 @@ e-mail : [email protected]

#define UHS_HID_BOOT_KEY_ZERO 0x27
#define UHS_HID_BOOT_KEY_ENTER 0x28
#define UHS_HID_BOOT_KEY_ESCAPE 0x29
#define UHS_HID_BOOT_KEY_DELETE 0x2a // Backspace
#define UHS_HID_BOOT_KEY_DELETE_FORWARD 0x4C // Delete
#define UHS_HID_BOOT_KEY_TAB 0x2b
#define UHS_HID_BOOT_KEY_SPACE 0x2c
#define UHS_HID_BOOT_KEY_CAPS_LOCK 0x39
#define UHS_HID_BOOT_KEY_SCROLL_LOCK 0x47
Expand Down