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usbkbd_de.h
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// modified usbkbd.h from https://github.com/tobozo/ESP32-USB-Soft-Host
// reversed from https://github.com/felis/USB_Host_Shield_2.0
// /!\ this is limited to only one device (keyboard)
#define UHS_HID_BOOT_KEY_ZERO 0x27
#define UHS_HID_BOOT_KEY_ENTER 0x28
#define UHS_HID_BOOT_KEY_SPACE 0x2c
#define UHS_HID_BOOT_KEY_CAPS_LOCK 0x39
#define UHS_HID_BOOT_KEY_SCROLL_LOCK 0x47
#define UHS_HID_BOOT_KEY_NUM_LOCK 0x53
#define UHS_HID_BOOT_KEY_ZERO2 0x62
#define UHS_HID_BOOT_KEY_PERIOD 0x63
#define UHS_HID_KEY_ESC 0x29 // ESCAPE
#define UHS_HID_KEY_BACKSPACE 0x2a // DELETE (Backspace)
#define UHS_HID_KEY_TAB 0x2b // Tab
#define UHS_HID_KEY_INSERT 0x49 // Insert
#define UHS_HID_KEY_HOME 0x4a // Home
#define UHS_HID_KEY_PAGEUP 0x4b // Page Up
#define UHS_HID_KEY_DELETE 0x4c // Delete Forward
#define UHS_HID_KEY_END 0x4d // End
#define UHS_HID_KEY_PAGEDOWN 0x4e // Page Down
#define UHS_HID_KEY_RIGHT 0x4f // Right Arrow
#define UHS_HID_KEY_LEFT 0x50 // Left Arrow
#define UHS_HID_KEY_DOWN 0x51 // Down Arrow
#define UHS_HID_KEY_UP 0x52 // Up Arrow
#define VALUE_BETWEEN(v,l,h) (((v)>(l)) && ((v)<(h)))
#define VALUE_WITHIN(v,l,h) (((v)>=(l)) && ((v)<=(h)))
// ------------------------------------------------------------------------------------------ //
struct MODIFIERKEYS {
uint8_t bmLeftCtrl : 1;
uint8_t bmLeftShift : 1;
uint8_t bmLeftAlt : 1;
uint8_t bmLeftGUI : 1;
uint8_t bmRightCtrl : 1;
uint8_t bmRightShift : 1;
uint8_t bmRightAlt : 1;
uint8_t bmRightGUI : 1;
};
// ------------------------------------------------------------------------------------------ //
struct KBDINFO {
struct
{
uint8_t bmLeftCtrl : 1;
uint8_t bmLeftShift : 1;
uint8_t bmLeftAlt : 1;
uint8_t bmLeftGUI : 1;
uint8_t bmRightCtrl : 1;
uint8_t bmRightShift : 1;
uint8_t bmRightAlt : 1;
uint8_t bmRightGUI : 1;
};
uint8_t bReserved;
uint8_t Keys[6];
};
// ------------------------------------------------------------------------------------------ //
struct KBDLEDS {
uint8_t bmNumLock : 1;
uint8_t bmCapsLock : 1;
uint8_t bmScrollLock : 1;
uint8_t bmCompose : 1;
uint8_t bmKana : 1;
uint8_t bmReserved : 3;
};
// ------------------------------------------------------------------------------------------ //
class KeyboardReportParser {
static const uint8_t numKeys[10];
static const uint8_t symKeysUp[12];
static const uint8_t symKeysLo[12];
static const uint8_t padKeys[5];
protected:
union
{
KBDINFO kbdInfo;
uint8_t bInfo[sizeof (KBDINFO)];
} prevState;
union
{
KBDLEDS kbdLeds;
uint8_t bLeds;
} kbdLockingKeys;
public:
KeyboardReportParser()
{
//bLeds = 0;
bmCapsLock = false;
bmNumLock = false;
bmScrollLock = false;
};
bool bmCapsLock;
bool bmNumLock;
bool bmScrollLock;
uint8_t OemToAscii(uint8_t mod, uint8_t key);
void Parse(uint8_t len, uint8_t *buf);
protected:
virtual uint8_t HandleLockingKeys(uint8_t key)
{
switch(key) {
case UHS_HID_BOOT_KEY_NUM_LOCK:
bmNumLock = !bmNumLock;
break;
case UHS_HID_BOOT_KEY_CAPS_LOCK:
bmCapsLock = !bmCapsLock;
break;
case UHS_HID_BOOT_KEY_SCROLL_LOCK:
bmScrollLock = !bmScrollLock;
break;
}
return 0;
};
virtual void OnControlKeysChanged(uint8_t before __attribute__((unused)), uint8_t after __attribute__((unused))) { };
virtual void OnKeyDown(uint8_t mod __attribute__((unused)), uint8_t key __attribute__((unused))) { };
virtual void OnKeyUp(uint8_t mod __attribute__((unused)), uint8_t key __attribute__((unused))) { };
virtual const uint8_t *getNumKeys() { return numKeys; };
virtual const uint8_t *getSymKeysUp() { return symKeysUp; };
virtual const uint8_t *getSymKeysLo() { return symKeysLo; };
virtual const uint8_t *getPadKeys() { return padKeys; };
};
// ------------------------------------------------------------------------------------------ //
//#define lang_DE // German keyboard
#ifdef lang_DE
// 0x1e 0x1f 0x27
const uint8_t KeyboardReportParser::numKeys[10] PROGMEM = {'!', '"', '#', '$', '%', '&', '/', '(', ')', '='}; // de
// 0x2d 0x2e ? 0x32 ? 0x38
const uint8_t KeyboardReportParser::symKeysUp[12] PROGMEM = {'?', '`', 'Ü', '*', '>','\'', 'Ö', 'Ä', '°', ';', ':', '_'}; // de
const uint8_t KeyboardReportParser::symKeysLo[12] PROGMEM = {'ß', '´', 'ü', '+', '<', '#', 'ö', 'ä', '^', ',', '.', '-'}; // de
const uint8_t KeyboardReportParser::padKeys[5] PROGMEM = {'/', '*', '-', '+', '\r'}; // en=de
#else
const uint8_t KeyboardReportParser::numKeys[10] PROGMEM = {'!', '@', '#', '$', '%', '^', '&', '*', '(', ')'}; // en
const uint8_t KeyboardReportParser::symKeysUp[12] PROGMEM = {'_', '+', '{', '}', '|', '~', ':', '"', '~', '<', '>', '?'}; // en
const uint8_t KeyboardReportParser::symKeysLo[12] PROGMEM = {'-', '=', '[', ']', '\\',' ', ';','\'', '`', ',', '.', '/'}; // en
const uint8_t KeyboardReportParser::padKeys[5] PROGMEM = {'/', '*', '-', '+', '\r'}; // en=de
#endif
// ------------------------------------------------------------------------------------------ //
void KeyboardReportParser::Parse(uint8_t len, uint8_t *buf) {
if (buf[2] == 1)
return;
// provide event for changed control key state
if (prevState.bInfo[0x00] != buf[0x00]) {
OnControlKeysChanged(prevState.bInfo[0x00], buf[0x00]);
}
for (uint8_t i = 2; i < 8; i++) {
bool down = false;
bool up = false;
for (uint8_t j = 2; j < 8; j++) {
if (buf[i] == prevState.bInfo[j] && buf[i] != 1)
down = true;
if (buf[j] == prevState.bInfo[i] && prevState.bInfo[i] != 1)
up = true;
}
if (!down) {
HandleLockingKeys(buf[i]);
OnKeyDown(*buf, buf[i]);
}
if (!up)
OnKeyUp(prevState.bInfo[0], prevState.bInfo[i]);
}
for (uint8_t i = 0; i < 8; i++)
prevState.bInfo[i] = buf[i];
}
// ------------------------------------------------------------------------------------------ //
uint8_t KeyboardReportParser::OemToAscii(uint8_t mod, uint8_t key) {
uint8_t shift = (mod & 0x22);
// bmRightAlt == 1
#ifdef lang_DE
if (mod == 64) { // alt gr pressed ?
if (key == 0x14) return('@');
else if (key == 0x08) return('€'); // € 0x20ac
else if (key == 0x10) return('µ'); // µ 0xc2b5
else if (key == 0x1f) return('²'); // ² 0xc2b2
else if (key == 0x20) return('³'); // ³ 0xc2b3
else if (key == 0x24) return('{');
else if (key == 0x25) return('[');
else if (key == 0x26) return(']');
else if (key == 0x27) return('}');
else if (key == 0x2d) return('\\');
else if (key == 0x30) return('~');
else if (key == 0x64) return('|');
}
// [a-z]
if (key == 0x64) {
if ((bmCapsLock == 0 && shift) || (bmCapsLock == 1 && shift == 0))
return ('>');
else
return ('<');
}
#else // lang_EN
if (key == 0x64) {
if ((bmCapsLock == 0 && shift) || (bmCapsLock == 1 && shift == 0))
return ('|');
else
return ('\\');
}
#endif
else if (VALUE_WITHIN(key, 0x04, 0x1d)) {
#ifdef lang_DE
if (key == 0x1c) key = 0x1d;
else if (key == 0x1d) key = 0x1c;
#endif
// Upper case letters
if ((bmCapsLock == 0 && shift) ||
(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 (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(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 ('\n');
case UHS_HID_BOOT_KEY_ZERO2 : return ((bmNumLock == 1) ? '0': 0);
case UHS_HID_BOOT_KEY_PERIOD: return ((bmNumLock == 1) ? '.': 0);
case UHS_HID_KEY_TAB : return (0x09);
//case UHS_HID_KEY_BACKSPACE : return (0x1b);
}
}
return ( 0);
}
// ------------------------------------------------------------------------------------------ //