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Major rewrite for NKRO and CAPSLOCK mapping

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Major revision to fix the following issues:
- simplified the code to simply use the Parse function for everything
- allows for NKRO up to keyboard hardware limitation
- allows CAPSLOCK to be remapped properly (backspace by default in
colemak)
- allows Shift-CAPSLOCK to retain the standard CAPS functionality
This commit is contained in:
weigee 2012-12-02 19:03:33 +08:00
parent f3b325b755
commit 52a488c5c0
5 changed files with 88 additions and 184 deletions
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@ -6,7 +6,6 @@
#include <usb_ch9.h> #include <usb_ch9.h>
#include <Usb.h> #include <Usb.h>
#include <usbhub.h> #include <usbhub.h>
#include <avr/pgmspace.h>
#include <address.h> #include <address.h>
#include <hidboot.h> #include <hidboot.h>
@ -24,7 +23,7 @@
// function definitions // function definitions
bool HandleReservedKeystrokes(uint8_t mod, uint8_t key); bool HandleReservedKeystrokes(HID *hid, uint8_t *buf);
void play_word_game(void); void play_word_game(void);
@ -42,15 +41,15 @@ typedef enum
dvorak dvorak
} KeyboardLayout; } KeyboardLayout;
// keymap based on the scancodes from 4 to 57, refer to the HID usage table on the meaning of each element // Keymap based on the scancodes from 4 to 57, refer to the HID usage table on the meaning of each element
PROGMEM prog_uint8_t qwertyKeymap[] = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t qwertyKeymap[] = {4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57};
PROGMEM prog_uint8_t tarmak1Keymap[] = {4, 5, 6, 7, 13, 9, 10, 11, 12, 17, 8, 15, 16, 14, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t tarmak1Keymap[] = {4, 5, 6, 7, 13, 9, 10, 11, 12, 17, 8, 15, 16, 14, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 42};
PROGMEM prog_uint8_t tarmak2Keymap[] = {4, 5, 6, 7, 9, 23, 13, 11, 12, 17, 8, 15, 16, 14, 18, 19, 20, 21, 22, 10, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t tarmak2Keymap[] = {4, 5, 6, 7, 9, 23, 13, 11, 12, 17, 8, 15, 16, 14, 18, 19, 20, 21, 22, 10, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 42};
PROGMEM prog_uint8_t tarmak3Keymap[] = {4, 5, 6, 7, 9, 23, 51, 11, 12, 17, 8, 15, 16, 14, 28, 19, 20, 21, 22, 10, 24, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t tarmak3Keymap[] = {4, 5, 6, 7, 9, 23, 51, 11, 12, 17, 8, 15, 16, 14, 28, 19, 20, 21, 22, 10, 24, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 42};
PROGMEM prog_uint8_t tarmak4Keymap[] = {4, 5, 6, 7, 9, 23, 51, 11, 24, 17, 8, 12, 16, 14, 28, 19, 20, 21, 22, 10, 15, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t tarmak4Keymap[] = {4, 5, 6, 7, 9, 23, 51, 11, 24, 17, 8, 12, 16, 14, 28, 19, 20, 21, 22, 10, 15, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 42};
PROGMEM prog_uint8_t colemakKeymap[] = {4, 5, 6, 22, 9, 23, 7, 11, 24, 17, 8, 12, 16, 14, 28, 51, 20, 19, 21, 10, 15, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 57}; PROGMEM prog_uint8_t colemakKeymap[] = {4, 5, 6, 22, 9, 23, 7, 11, 24, 17, 8, 12, 16, 14, 28, 51, 20, 19, 21, 10, 15, 25, 26, 27, 13, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 18, 52, 53, 54, 55, 56, 42};
const uint8_t *keymap[] = const uint8_t *Keymap[] =
{ {
qwertyKeymap, qwertyKeymap,
tarmak1Keymap, tarmak1Keymap,
@ -60,205 +59,123 @@ const uint8_t *keymap[] =
colemakKeymap colemakKeymap
}; };
// global variables
uint8_t keyBuffer[8] = {0,0,0,0,0,0,0,0};
//uint32_t ledBlinkTime = millis(); //uint32_t ledBlinkTime = millis();
//uint16_t ledBlinkDelay = 500; //uint16_t ledBlinkDelay = 500;
//bool ledStatus = false; //bool ledStatus = false;
KeyboardLayout currentLayout = qwerty; KeyboardLayout CurrentLayout = qwerty;
uint8_t KeyBuffer[8] = {0,0,0,0,0,0,0,0};
class KbdRptParser : public KeyboardReportParser class KbdRptParser : public KeyboardReportParser
{ {
void PrintKey(uint8_t mod, uint8_t key);
protected: protected:
virtual void OnKeyDown (uint8_t mod, uint8_t key);
virtual void OnKeyUp (uint8_t mod, uint8_t key);
virtual void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf); virtual void Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
}; };
void KbdRptParser::PrintKey(uint8_t m, uint8_t key)
// *******************************************************************************************
// Parse
// *******************************************************************************************
void KbdRptParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
{ {
// On error - return
if (buf[2] == 1)
return;
MODIFIERKEYS mod; // for (uint8_t i=0; i<8; i++)
*((uint8_t*)&mod) = m; // {
// PrintHex(buf[i]);
// Serial.print(" ");
// }
// Serial.println("");
Serial.print((mod.bmLeftCtrl == 1) ? "C" : " "); KeyBuffer[0] = buf[0];
Serial.print((mod.bmLeftShift == 1) ? "S" : " ");
Serial.print((mod.bmLeftAlt == 1) ? "A" : " ");
Serial.print((mod.bmLeftGUI == 1) ? "G" : " ");
Serial.print(" >"); if (!HandleReservedKeystrokes(hid, buf))
Serial.print (key); {
Serial.print (" : "); // remap all keys according to the existing keymap
PrintHex<uint8_t>(key); for (uint8_t i=2; i<8; i++)
Serial.print("< "); {
// handle special case of Shift-CAPSLOCK to be ignored by the remapper
if (buf[i] == KEY_CAPS_LOCK && buf[0] & 0x22)
KeyBuffer[i] = buf[i];
else
{
// print the key based on the current layout
if (buf[i]>=4 && buf[i]-4 < 54) // transpose of 4 becoz our array starts from 0 but A is 4
// limit check to 57, which is the last mappable key (CAPSLOCK)
KeyBuffer[i] = pgm_read_byte(Keymap[CurrentLayout]+buf[i]-4);
else
KeyBuffer[i] = buf[i];
}
Serial.print((mod.bmRightCtrl == 1) ? "C" : " "); // check locking keys
Serial.print((mod.bmRightShift == 1) ? "S" : " "); HandleLockingKeys(hid, KeyBuffer[i]);
Serial.print((mod.bmRightAlt == 1) ? "A" : " "); }
Serial.println((mod.bmRightGUI == 1) ? "G" : " ");
// send out key press
HID_SendReport(2,KeyBuffer,sizeof(KeyBuffer));
// for (uint8_t i=0; i<8; i++)
// {
// PrintHex(KeyBuffer[i]);
// Serial.print(" ");
// }
// Serial.println("");
// Serial.println("");
}
}; };
void KbdRptParser::OnKeyDown(uint8_t mod, uint8_t key)
bool HandleReservedKeystrokes(HID *hid, uint8_t *buf) // return true if it is a reserved keystroke
{ {
uint8_t mod = buf[0]; // read the modifier byte
#ifdef DEBUG uint8_t numKeysPressed = 0;
Serial.print("DN "); uint8_t keyPosition = 0;
PrintKey(mod, key);
#endif
if (!HandleReservedKeystrokes(mod, key)) // check that there is only 1 single key that is pressed
{ for (uint8_t i=2; i<8; i++) if (buf[i] > 0) {
// print the key based on the current layout numKeysPressed++;
if (key-4 < 54) // transpose of 4 becoz our array starts from 0 but A is 4 keyPosition = i;
// limit check to 57, which is the last mappable key (CAPSLOCK)
key = pgm_read_byte(keymap[currentLayout]+key-4);
keyBuffer[0] = mod;
keyBuffer[2] = key;
HID_SendReport(2,keyBuffer,sizeof(keyBuffer));
} }
}
void KbdRptParser::OnKeyUp(uint8_t mod, uint8_t key) if (numKeysPressed != 1) return false; // only allow single keypress for reserved keystrokes (besides modifiers)
{
#ifdef DEBUG
Serial.print("UP ");
PrintKey(mod, key);
#endif
keyBuffer[0] = 0;
keyBuffer[2] = 0;
HID_SendReport(2,keyBuffer,sizeof(keyBuffer));
}
// Copy and pasted over from Oleg's library in preparation for next major revision
// void KbdRptParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
// {
// Serial.println ("This is my own parse function!");
// // On error - return
// if (buf[2] == 1)
// return;
// KBDINFO *pki = (KBDINFO*)buf;
// for (uint8_t i=2; i<8; i++)
// {
// bool down = true;
// bool up = true;
// for (uint8_t j=2; j<8; j++)
// {
// if (buf[i] == prevState.bInfo[j] && buf[i] != 1) // if at least one of the keys are the same
// down = false; // as the previous state, then it could not
// // have been pressed again
// if (buf[j] == prevState.bInfo[i] && prevState.bInfo[i] != 1) // if any of the keys in the previous
// up = false; // is found now, then it has not been
// } // released
// if (down)
// {
// HandleLockingKeys(hid, buf[i]);
// OnKeyDown(*buf, buf[i]);
// }
// if (up)
// {
// OnKeyUp(prevState.bInfo[0], prevState.bInfo[i]);
// }
// }
// // handle modifier keys
// if ( (buf[0] & 0x01) > (prevState.bInfo[0] & 0x01)) // left CTRL was pressed
// OnKeyDown (*buf, 0xe0);
// if ( (buf[0] & 0x01) < (prevState.bInfo[0] & 0x01)) // left CTRL was release
// OnKeyUp (prevState.bInfo[0], 0xe0);
// if ( (buf[0] & 0x02) > (prevState.bInfo[0] & 0x02)) // left SHIFT was pressed
// OnKeyDown (*buf, 0xe1);
// if ( (buf[0] & 0x02) < (prevState.bInfo[0] & 0x02)) // left SHIFT was release
// OnKeyUp (prevState.bInfo[0], 0xe1);
// if ( (buf[0] & 0x04) > (prevState.bInfo[0] & 0x04)) // left ALT was pressed
// OnKeyDown (*buf, 0xe2);
// if ( (buf[0] & 0x04) < (prevState.bInfo[0] & 0x04)) // left ALT was release
// OnKeyUp (prevState.bInfo[0], 0xe2);
// if ( (buf[0] & 0x08) > (prevState.bInfo[0] & 0x08)) // left GUI was pressed
// OnKeyDown (*buf, 0xe3);
// if ( (buf[0] & 0x08) < (prevState.bInfo[0] & 0x08)) // left GUI was release
// OnKeyUp (prevState.bInfo[0], 0xe3);
// if ( (buf[0] & 0x10) > (prevState.bInfo[0] & 0x10)) // right CTRL was pressed
// OnKeyDown (*buf, 0xe4);
// if ( (buf[0] & 0x10) < (prevState.bInfo[0] & 0x10)) // right CTRL was release
// OnKeyUp (prevState.bInfo[0], 0xe4);
// if ( (buf[0] & 0x20) > (prevState.bInfo[0] & 0x20)) // right SHIFT was pressed
// OnKeyDown (*buf, 0xe5);
// if ( (buf[0] & 0x20) < (prevState.bInfo[0] & 0x20)) // right SHIFT was release
// OnKeyUp (prevState.bInfo[0], 0xe5);
// if ( (buf[0] & 0x40) > (prevState.bInfo[0] & 0x40)) // right ALT was pressed
// OnKeyDown (*buf, 0xe6);
// if ( (buf[0] & 0x40) < (prevState.bInfo[0] & 0x40)) // right ALT was release
// OnKeyUp (prevState.bInfo[0], 0xe6);
// if ( (buf[0] & 0x80) > (prevState.bInfo[0] & 0x80)) // right GUI was pressed
// OnKeyDown (*buf, 0xe7);
// if ( (buf[0] & 0x80) < (prevState.bInfo[0] & 0x80)) // right GUI was release
// OnKeyUp (prevState.bInfo[0], 0xe7);
// /*
// for (uint8_t i=0; i<8; i++)
// prevState.bInfo[i] = buf[i];
// */
// memcpy(prevState.bInfo, buf, 8); // potentially faster than the loop? code seems to compile smaller also
// };
bool HandleReservedKeystrokes(uint8_t mod, uint8_t key) // return true if it is a reserved keystroke
{
// check if we are changing layouts // check if we are changing layouts
if ((mod & 0x22) && (mod & 0x11)) { // Shift-Alt keystrokes if ((mod & 0x22) && (mod & 0x11)) { // Shift-Alt keystrokes
switch (key) { switch (buf[keyPosition]) {
case 0x27: // 0 case 0x27: // 0
currentLayout = qwerty; CurrentLayout = qwerty;
digitalWrite(modeLED, LOW); digitalWrite(modeLED, LOW);
return true; return true;
case 0x1e: // 1 case 0x1e: // 1
currentLayout = tarmak1; CurrentLayout = tarmak1;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
return true; return true;
case 0x1f: // 2 case 0x1f: // 2
currentLayout = tarmak2; CurrentLayout = tarmak2;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
return true; return true;
case 0x20: // 3 case 0x20: // 3
currentLayout = tarmak3; CurrentLayout = tarmak3;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
return true; return true;
case 0x21: // 4 case 0x21: // 4
currentLayout = tarmak4; CurrentLayout = tarmak4;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
return true; return true;
case 0x22: // 5 case 0x22: // 5
currentLayout = colemak; CurrentLayout = colemak;
digitalWrite(modeLED, HIGH); digitalWrite(modeLED, HIGH);
return true; return true;
@ -268,25 +185,14 @@ bool HandleReservedKeystrokes(uint8_t mod, uint8_t key) // return true if it is
} }
} }
// note that in the current implementation of HandleReservedKeystrokes, this
// part of the code will never get called even if DEBUG is defined
#ifdef DEBUG
Serial.print("Current layout: ");
Serial.println(currentLayout);
for (uint8_t i=0; i<54; i++)
Serial.println(pgm_read_byte(keymap[currentLayout]+i));
#endif
return false; return false;
} }
// ******************************* // *******************************************************************************************
// **** WORD GAME!!! *** // WORD GAME!!!
// ******************************* // *******************************************************************************************
void play_word_game(void) void play_word_game(void)
{ {
@ -296,7 +202,7 @@ void play_word_game(void)
uint16_t randNum; uint16_t randNum;
switch (currentLayout) { switch (CurrentLayout) {
case tarmak1: case tarmak1:
strcpy (priorityAlphabets, "nek"); strcpy (priorityAlphabets, "nek");
break; break;
@ -364,8 +270,6 @@ void setup()
// initialize the digital pin as an output. // initialize the digital pin as an output.
pinMode(modeLED, OUTPUT); pinMode(modeLED, OUTPUT);
Keyboard.begin(); Keyboard.begin();
#ifdef DEBUG #ifdef DEBUG

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