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Copy pathTLoraPagerKeyboard.cpp
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231 lines (196 loc) · 7.35 KB
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#if defined(T_LORA_PAGER)
#include "TLoraPagerKeyboard.h"
#include "main.h"
#ifndef LEDC_BACKLIGHT_CHANNEL
#define LEDC_BACKLIGHT_CHANNEL 4
#endif
#ifndef LEDC_BACKLIGHT_BIT_WIDTH
#define LEDC_BACKLIGHT_BIT_WIDTH 8
#endif
#ifndef LEDC_BACKLIGHT_FREQ
#define LEDC_BACKLIGHT_FREQ 1000 // Hz
#endif
#define _TCA8418_COLS 10
#define _TCA8418_ROWS 4
#define _TCA8418_NUM_KEYS 31
#define _TCA8418_MULTI_TAP_THRESHOLD 1500
using Key = TCA8418KeyboardBase::TCA8418Key;
constexpr uint8_t modifierRightShiftKey = 29 - 1; // keynum -1
constexpr uint8_t modifierRightShift = 0b0001;
constexpr uint8_t modifierSymKey = 21 - 1;
constexpr uint8_t modifierSym = 0b0010;
// Num chars per key, Modulus for rotating through characters
static uint8_t TLoraPagerTapMod[_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};
static unsigned char TLoraPagerTapMap[_TCA8418_NUM_KEYS][3] = {{'q', 'Q', '1'},
{'w', 'W', '2'},
{'e', 'E', '3'},
{'r', 'R', '4'},
{'t', 'T', '5'},
{'y', 'Y', '6'},
{'u', 'U', '7'},
{'i', 'I', '8'},
{'o', 'O', '9'},
{'p', 'P', '0'},
{'a', 'A', '*'},
{'s', 'S', '/'},
{'d', 'D', '+'},
{'f', 'F', '-'},
{'g', 'G', '='},
{'h', 'H', ':'},
{'j', 'J', '\''},
{'k', 'K', '"'},
{'l', 'L', '@'},
{Key::SELECT, 0x00, Key::TAB},
{0x00, 0x00, 0x00},
{'z', 'Z', '_'},
{'x', 'X', '$'},
{'c', 'C', ';'},
{'v', 'V', '?'},
{'b', 'B', '!'},
{'n', 'N', ','},
{'m', 'M', '.'},
{0x00, 0x00, 0x00},
{Key::BSP, 0x00, Key::ESC},
{' ', 0x00, Key::BL_TOGGLE}};
TLoraPagerKeyboard::TLoraPagerKeyboard()
: 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)
{
#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 0)
ledcAttach(KB_BL_PIN, LEDC_BACKLIGHT_FREQ, LEDC_BACKLIGHT_BIT_WIDTH);
#else
ledcSetup(LEDC_BACKLIGHT_CHANNEL, LEDC_BACKLIGHT_FREQ, LEDC_BACKLIGHT_BIT_WIDTH);
ledcAttachPin(KB_BL_PIN, LEDC_BACKLIGHT_CHANNEL);
#endif
reset();
}
void TLoraPagerKeyboard::reset(void)
{
TCA8418KeyboardBase::reset();
pinMode(KB_BL_PIN, OUTPUT);
digitalWrite(KB_BL_PIN, LOW);
setBacklight(false);
}
// handle multi-key presses (shift and alt)
void TLoraPagerKeyboard::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 TLoraPagerKeyboard::setBacklight(bool on)
{
uint32_t _brightness = 0;
if (on)
_brightness = brightness;
#if ESP_ARDUINO_VERSION >= ESP_ARDUINO_VERSION_VAL(3, 0, 0)
ledcWrite(KB_BL_PIN, _brightness);
#else
ledcWrite(LEDC_BACKLIGHT_CHANNEL, _brightness);
#endif
}
void TLoraPagerKeyboard::pressed(uint8_t key)
{
if (state == Init || state == Busy) {
return;
}
if (config.device.buzzer_mode == meshtastic_Config_DeviceConfig_BuzzerMode_ALL_ENABLED ||
config.device.buzzer_mode == meshtastic_Config_DeviceConfig_BuzzerMode_SYSTEM_ONLY) {
hapticFeedback();
}
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 TLoraPagerKeyboard::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 (TLoraPagerTapMap[last_key][modifierFlag % TLoraPagerTapMod[last_key]] == Key::BL_TOGGLE) {
toggleBacklight();
return;
}
queueEvent(TLoraPagerTapMap[last_key][modifierFlag % TLoraPagerTapMod[last_key]]);
if (isModifierKey(last_key) == false)
modifierFlag = 0;
}
void TLoraPagerKeyboard::hapticFeedback()
{
drv.setWaveform(0, 14); // strong buzz 100%
drv.setWaveform(1, 0); // end waveform
drv.go();
}
// toggle brightness of the backlight in three steps
void TLoraPagerKeyboard::toggleBacklight(bool off)
{
if (off) {
brightness = 0;
} else {
if (brightness == 0) {
brightness = 40;
} else if (brightness == 40) {
brightness = 127;
} else if (brightness >= 127) {
brightness = 0;
}
}
LOG_DEBUG("Toggle backlight: %d", brightness);
setBacklight(true);
}
void TLoraPagerKeyboard::updateModifierFlag(uint8_t key)
{
if (key == modifierRightShiftKey) {
modifierFlag ^= modifierRightShift;
} else if (key == modifierSymKey) {
modifierFlag ^= modifierSym;
}
}
bool TLoraPagerKeyboard::isModifierKey(uint8_t key)
{
return (key == modifierRightShiftKey || key == modifierSymKey);
}
#endif