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#if defined(T_DECK_PRO)
#include "TDeckProKeyboard.h"
#define _TCA8418_COLS 10
#define _TCA8418_ROWS 4
#define _TCA8418_NUM_KEYS 35
#define _TCA8418_MULTI_TAP_THRESHOLD 1500
using Key = TCA8418KeyboardBase::TCA8418Key;
constexpr uint8_t modifierRightShiftKey = 31 - 1; // keynum -1
constexpr uint8_t modifierRightShift = 0b0001;
constexpr uint8_t modifierLeftShiftKey = 35 - 1;
constexpr uint8_t modifierLeftShift = 0b0001;
constexpr uint8_t modifierSymKey = 32 - 1;
constexpr uint8_t modifierSym = 0b0010;
constexpr uint8_t modifierAltKey = 30 - 1;
constexpr uint8_t modifierAlt = 0b0100;
// Num chars per key, Modulus for rotating through characters
static uint8_t TDeckProTapMod[_TCA8418_NUM_KEYS] = {5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5};
static unsigned char TDeckProTapMap[_TCA8418_NUM_KEYS][5] = {
{'p', 'P', '@', 0x00, Key::SEND_PING},
{'o', 'O', '+'},
{'i', 'I', '-'},
{'u', 'U', '_'},
{'y', 'Y', ')'},
{'t', 'T', '(', 0x00, Key::TAB},
{'r', 'R', '3'},
{'e', 'E', '2', 0x00, Key::UP},
{'w', 'W', '1'},
{'q', 'Q', '#', 0x00, Key::ESC}, // p, o, i, u, y, t, r, e, w, q
{Key::BSP, 0x00, 0x00},
{'l', 'L', '"'},
{'k', 'K', '\''},
{'j', 'J', ';'},
{'h', 'H', ':'},
{'g', 'G', '/', 0x00, Key::GPS_TOGGLE},
{'f', 'F', '6', 0x00, Key::RIGHT},
{'d', 'D', '5'},
{'s', 'S', '4', 0x00, Key::LEFT},
{'a', 'A', '*'}, // bsp, l, k, j, h, g, f, d, s, a
{0x0d, 0x00, 0x00},
{'$', 0x00, 0x00},
{'m', 'M', '.', 0x00, Key::MUTE_TOGGLE},
{'n', 'N', ','},
{'b', 'B', '!', 0x00, Key::BL_TOGGLE},
{'v', 'V', '?'},
{'c', 'C', '9'},
{'x', 'X', '8', 0x00, Key::DOWN},
{'z', 'Z', '7'},
{0x00, 0x00, 0x00}, // Ent, $, m, n, b, v, c, x, z, alt
{0x00, 0x00, 0x00},
{0x00, 0x00, 0x00},
{0x20, 0x00, 0x00},
{0x00, 0x00, '0'},
{0x00, 0x00, 0x00} // R_Shift, sym, space, mic, L_Shift
};
TDeckProKeyboard::TDeckProKeyboard()
: TCA8418KeyboardBase(_TCA8418_ROWS, _TCA8418_COLS), modifierFlag(0), last_modifier_time(0), last_key(UINT8_MAX),
next_key(UINT8_MAX), last_tap(0L), char_idx(0), tap_interval(0)
{
}
void TDeckProKeyboard::reset()
{
TCA8418KeyboardBase::reset();
pinMode(KB_BL_PIN, OUTPUT);
setBacklight(false);
}
// handle multi-key presses (shift and alt)
void TDeckProKeyboard::trigger()
{
uint8_t count = keyCount();
if (count == 0)
return;
for (uint8_t i = 0; i < count; ++i) {
uint8_t k = readRegister(TCA8418_REG_KEY_EVENT_A + i);
uint8_t key = k & 0x7F;
if (k & 0x80) {
pressed(key);
} else {
released();
state = Idle;
}
}
}
void TDeckProKeyboard::pressed(uint8_t key)
{
if (state == Init || state == Busy) {
return;
}
if (modifierFlag && (millis() - last_modifier_time > _TCA8418_MULTI_TAP_THRESHOLD)) {
modifierFlag = 0;
}
int row = (key - 1) / 10;
int col = (key - 1) % 10;
if (row >= _TCA8418_ROWS || col >= _TCA8418_COLS) {
return; // Invalid key
}
next_key = row * _TCA8418_COLS + col;
state = Held;
uint32_t now = millis();
tap_interval = now - last_tap;
updateModifierFlag(next_key);
if (isModifierKey(next_key)) {
last_modifier_time = now;
}
if (tap_interval < 0) {
last_tap = 0;
state = Busy;
return;
}
if (next_key != last_key || tap_interval > _TCA8418_MULTI_TAP_THRESHOLD) {
char_idx = 0;
} else {
char_idx += 1;
}
last_key = next_key;
last_tap = now;
}
void TDeckProKeyboard::released()
{
if (state != Held) {
return;
}
if (last_key >= _TCA8418_NUM_KEYS) {
last_key = UINT8_MAX;
state = Idle;
return;
}
uint32_t now = millis();
last_tap = now;
if (TDeckProTapMap[last_key][modifierFlag % TDeckProTapMod[last_key]] == Key::BL_TOGGLE) {
toggleBacklight();
return;
}
queueEvent(TDeckProTapMap[last_key][modifierFlag % TDeckProTapMod[last_key]]);
if (isModifierKey(last_key) == false)
modifierFlag = 0;
}
void TDeckProKeyboard::setBacklight(bool on)
{
if (on) {
digitalWrite(KB_BL_PIN, HIGH);
} else {
digitalWrite(KB_BL_PIN, LOW);
}
}
void TDeckProKeyboard::toggleBacklight(void)
{
digitalWrite(KB_BL_PIN, !digitalRead(KB_BL_PIN));
}
void TDeckProKeyboard::updateModifierFlag(uint8_t key)
{
if (key == modifierRightShiftKey) {
modifierFlag ^= modifierRightShift;
} else if (key == modifierLeftShiftKey) {
modifierFlag ^= modifierLeftShift;
} else if (key == modifierSymKey) {
modifierFlag ^= modifierSym;
} else if (key == modifierAltKey) {
modifierFlag ^= modifierAlt;
}
}
bool TDeckProKeyboard::isModifierKey(uint8_t key)
{
return (key == modifierRightShiftKey || key == modifierLeftShiftKey || key == modifierAltKey || key == modifierSymKey);
}
#endif // T_DECK_PRO