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199 lines (171 loc) · 7.97 KB
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#if defined(M5STACK_CARDPUTER_ADV)
#include "CardputerKeyboard.h"
#include "main.h"
#define _TCA8418_COLS 8
#define _TCA8418_ROWS 7
#define _TCA8418_NUM_KEYS 56
#define _TCA8418_MULTI_TAP_THRESHOLD 1500
using Key = TCA8418KeyboardBase::TCA8418Key;
constexpr uint8_t modifierFnKey = 2;
constexpr uint8_t modifierFn = 0b0010;
constexpr uint8_t modifierCtrlKey = 3;
constexpr uint8_t modifierShiftKey = 6;
constexpr uint8_t modifierShift = 0b0001;
constexpr uint8_t modifierOptKey = 7;
constexpr uint8_t modifierAltKey = 11;
// Num chars per key, Modulus for rotating through characters
static uint8_t CardputerTapMod[_TCA8418_NUM_KEYS] = {3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3};
static unsigned char CardputerTapMap[_TCA8418_NUM_KEYS][3] = {{'`', '~', Key::ESC},
{Key::TAB, 0x00, 0x00},
{0x00, 0x00, 0x00},
{0x00, 0x00, 0x00},
{'1', '!', 0x00},
{'q', 'Q', Key::REBOOT},
{0x00, 0x00, 0x00},
{0x00, 0x00, 0x00},
{'2', '@', 0x00},
{'w', 'W', 0x00},
{'a', 'A', 0x00},
{0x00, 0x00, 0x00},
{'3', '#', 0x00},
{'e', 'E', 0x00},
{'s', 'S', 0x00},
{'z', 'Z', 0x00},
{'4', '$', 0x00},
{'r', 'R', 0x00},
{'d', 'D', 0x00},
{'x', 'X', 0x00},
{'5', '%', 0x00},
{'t', 'T', 0x00},
{'f', 'F', 0x00},
{'c', 'C', 0x00},
{'6', '^', 0x00},
{'y', 'Y', 0x00},
{'g', 'G', Key::GPS_TOGGLE},
{'v', 'V', 0x00},
{'7', '&', 0x00},
{'u', 'U', 0x00},
{'h', 'H', 0x00},
{'b', 'B', Key::BT_TOGGLE},
{'8', '*', 0x00},
{'i', 'I', 0x00},
{'j', 'J', 0x00},
{'n', 'N', 0x00},
{'9', '(', 0x00},
{'o', 'O', 0x00},
{'k', 'K', 0x00},
{'m', 'M', Key::MUTE_TOGGLE},
{'0', ')', 0x00},
{'p', 'P', Key::SEND_PING},
{'l', 'L', 0x00},
{',', '<', Key::LEFT},
{'_', '-', 0x00},
{'[', '{', 0x00},
{';', ':', Key::UP},
{'.', '>', Key::DOWN},
{'=', '+', 0x00},
{']', '}', 0x00},
{'\'', '"', 0x00},
{'/', '?', Key::RIGHT},
{Key::BSP, 0x00, 0x00},
{'\\', '|', 0x00},
{Key::SELECT, 0x00, 0x00},
{' ', ' ', ' '}};
CardputerKeyboard::CardputerKeyboard()
: TCA8418KeyboardBase(_TCA8418_ROWS, _TCA8418_COLS), modifierFlag(0), last_modifier_time(0), last_key(-1), next_key(-1),
last_tap(0L), char_idx(0), tap_interval(0)
{
reset();
}
void CardputerKeyboard::reset(void)
{
TCA8418KeyboardBase::reset();
}
// handle multi-key presses (shift and alt)
void CardputerKeyboard::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 CardputerKeyboard::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 CardputerKeyboard::released()
{
if (state != Held) {
return;
}
if (last_key < 0 || last_key >= _TCA8418_NUM_KEYS) {
last_key = -1;
state = Idle;
return;
}
uint32_t now = millis();
last_tap = now;
if (inputBroker->menuMode && modifierFlag == 0) {
if (last_key == 0 || last_key == 43 || last_key == 46 || last_key == 47 ||
last_key == 51) { // esc, left, up, down, right key
modifierFlag = modifierFn;
}
}
queueEvent(CardputerTapMap[last_key][modifierFlag % CardputerTapMod[last_key]]);
if (isModifierKey(last_key) == false)
modifierFlag = 0;
}
void CardputerKeyboard::updateModifierFlag(uint8_t key)
{
if (key == modifierShiftKey) {
modifierFlag ^= modifierShift;
} else if (key == modifierFnKey) {
modifierFlag ^= modifierFn;
}
}
bool CardputerKeyboard::isModifierKey(uint8_t key)
{
return (key == modifierShiftKey || key == modifierFnKey);
}
#endif