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keymapper
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Code Issues Releases Wiki Activity

Additional handling of special keys 

Prevent special keys from being handled until they have been released.
This hopefully fixes the weird repeating key problems.
This commit is contained in:
weigee 2013-02-05 02:19:14 +08:00
parent 27bfccb1a0
commit 2a7bd24b63
1 changed files with 73 additions and 29 deletions
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102
keymapper.ino
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@ -26,7 +26,7 @@
bool HandleReservedKeystrokes(HID *hid, uint8_t *buf); bool HandleReservedKeystrokes(HID *hid, uint8_t *buf);
inline void SendKeysToHost (uint8_t *buf); inline void SendKeysToHost (uint8_t *buf);
void play_word_game(void); void play_word_game(void);
inline void LatchKey (uint8_t keyToLatch);
// variable definitions // variable definitions
@ -62,9 +62,12 @@ const uint8_t *Keymap[] =
// global variables // global variables
//uint32_t ledBlinkTime = millis(); //uint32_t ledBlinkTime = millis();
//uint16_t ledBlinkDelay = 500; //uint16_t ledBlinkDelay = 500;
//bool ledStatus = false;
KeyboardLayout CurrentLayout = qwerty; KeyboardLayout CurrentLayout = qwerty;
uint8_t KeyBuffer[8] = {0,0,0,0,0,0,0,0}; uint8_t KeyBuffer[8] = {0,0,0,0,0,0,0,0};
uint8_t specialKeyLatch=0;
bool specialKeyLatchReleased = false;
class KbdRptParser : public KeyboardReportParser class KbdRptParser : public KeyboardReportParser
{ {
@ -97,36 +100,60 @@ void KbdRptParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
if (!HandleReservedKeystrokes(hid, buf)) if (!HandleReservedKeystrokes(hid, buf))
{ {
// remap all keys according to the existing keymap specialKeyLatchReleased = true;
for (i=2; i<8; i++)
// remap all keys according to the existing keymap
for (i=2; i<8; i++)
{
// handle special case of Shift-CAPSLOCK to be ignored by the remapper
if (buf[i] == KEY_CAPS_LOCK && buf[0] & 0x22)
{ {
// handle special case of Shift-CAPSLOCK to be ignored by the remapper KeyBuffer[i] = KEY_CAPS_LOCK;
if (buf[i] == KEY_CAPS_LOCK && buf[0] & 0x22) LatchKey(KEY_CAPS_LOCK);
KeyBuffer[i] = buf[i]; }
else else
{ {
// print the key based on the current layout // print the key based on the current layout
if (buf[i]>=4 && buf[i] <= 57) // transpose of 4 becoz our array starts from 0 but A is 4 if (buf[i]>=4 && buf[i] <= 57) // transpose of 4 becoz our array starts from 0 but A is 4
// limit check to 57, which is the last mappable key (CAPSLOCK) // limit check to 57, which is the last mappable key (CAPSLOCK)
KeyBuffer[i] = pgm_read_byte(Keymap[CurrentLayout]+buf[i]-4); {
else // if it was a special key of shift-CAPS, then only allow mapping if the key has been released at least once
KeyBuffer[i] = buf[i]; if (buf[i] != specialKeyLatch)
} KeyBuffer[i] = pgm_read_byte(Keymap[CurrentLayout]+buf[i]-4);
else // key is not released yet. do not allow mapping
// check locking keys {
HandleLockingKeys(hid, KeyBuffer[i]); // Serial.println("key is not released");
KeyBuffer[i] = 0;
specialKeyLatchReleased = false;
}
}
else
KeyBuffer[i] = buf[i];
} }
// send out key press
SendKeysToHost (KeyBuffer);
// for (uint8_t i=0; i<8; i++) // check locking keys
// { HandleLockingKeys(hid, KeyBuffer[i]);
// PrintHex(KeyBuffer[i]); }
// Serial.print(" ");
// } // reset latch if key is released
// Serial.println(""); if (specialKeyLatchReleased)
// Serial.println(""); {
// Serial.println("latch is released");
specialKeyLatch = 0;
}
// send out key press
SendKeysToHost (KeyBuffer);
// for (uint8_t i=0; i<8; i++)
// {
// PrintHex(KeyBuffer[i]);
// Serial.print(" ");
// }
// Serial.println("");
// Serial.println("");
} }
@ -156,37 +183,45 @@ bool HandleReservedKeystrokes(HID *hid, uint8_t *buf) // return true if it is a
case 0x27: // 0 case 0x27: // 0
CurrentLayout = qwerty; CurrentLayout = qwerty;
digitalWrite(modeLED, LOW); digitalWrite(modeLED, LOW);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x1e: // 1 case 0x1e: // 1
CurrentLayout = tarmak1; CurrentLayout = tarmak1;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x1f: // 2 case 0x1f: // 2
CurrentLayout = tarmak2; CurrentLayout = tarmak2;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x20: // 3 case 0x20: // 3
CurrentLayout = tarmak3; CurrentLayout = tarmak3;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x21: // 4 case 0x21: // 4
CurrentLayout = tarmak4; CurrentLayout = tarmak4;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x22: // 5 case 0x22: // 5
CurrentLayout = colemak; CurrentLayout = colemak;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
LatchKey(buf[keyPosition]);
return true; return true;
case 0x2c: // space bar case 0x2c: // space bar
play_word_game(); play_word_game();
LatchKey(buf[keyPosition]);
return true; return true;
} }
} }
return false; return false;
@ -196,7 +231,7 @@ bool HandleReservedKeystrokes(HID *hid, uint8_t *buf) // return true if it is a
inline void SendKeysToHost (uint8_t *buf) inline void SendKeysToHost (uint8_t *buf)
{ {
#ifdef TEENSY #ifdef TEENSY
Keyboard.set_modifier(buf[0]); Keyboard.set_modifier(buf[0]);
Keyboard.set_key1(buf[2]); Keyboard.set_key1(buf[2]);
Keyboard.set_key2(buf[3]); Keyboard.set_key2(buf[3]);
Keyboard.set_key3(buf[4]); Keyboard.set_key3(buf[4]);
@ -211,6 +246,15 @@ inline void SendKeysToHost (uint8_t *buf)
} }
inline void LatchKey (uint8_t keyToLatch)
{
specialKeyLatch = keyToLatch;
specialKeyLatchReleased = false;
// Serial.print(keyToLatch);
// Serial.println(" is latched");
}