Crazypedia
70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
#pragma once
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#include <Tactility/hal/keyboard/KeyboardDevice.h>
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#include <Tactility/Timer.h>
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#include <Tca8418.h>
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#include <driver/gpio.h>
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#include <driver/ledc.h>
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#include <freertos/queue.h>
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// QWERTY keyboard for the LilyGO T-Deck (Pro) Max.
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//
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// The keyboard is a TCA8418 4x10 matrix scanner on the shared I2C bus at 0x34.
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// The keyboard reset line is wired through the XL9555 IO expander (P11), so it
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// must be released before this device is started (see Configuration.cpp).
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//
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// Pins, address and keymap are taken from Xinyuan-LilyGO/T-Deck-MAX:
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// examples/factory/peri_keypad.cpp and lib/TDeckMaxBoard/src/TDeckMaxBoard.h.
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class TdeckmaxKeyboard final : public tt::hal::keyboard::KeyboardDevice {
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lv_indev_t* kbHandle = nullptr;
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gpio_num_t backlightPin = GPIO_NUM_NC;
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ledc_timer_t backlightTimer;
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ledc_channel_t backlightChannel;
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bool backlightOkay = false;
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int backlightImpulseDuty = 0;
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QueueHandle_t queue = nullptr;
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// LVGL only registers a key on a RELEASED->PRESSED edge, so readCallback
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// alternates press/release per queued key; this tracks the pending release.
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uint32_t lastKey = 0;
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bool lastKeyNeedsRelease = false;
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std::shared_ptr<Tca8418> keypad;
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std::unique_ptr<tt::Timer> inputTimer;
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std::unique_ptr<tt::Timer> backlightImpulseTimer;
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bool shiftPressed = false;
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bool symPressed = false;
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bool capToggle = false;
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bool capToggleArmed = true;
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bool initBacklight(gpio_num_t pin, uint32_t frequencyHz, ledc_timer_t timer, ledc_channel_t channel);
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void processKeyboard();
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void processBacklightImpulse();
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static void readCallback(lv_indev_t* indev, lv_indev_data_t* data);
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public:
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explicit TdeckmaxKeyboard(const std::shared_ptr<Tca8418>& tca) : keypad(tca) {
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queue = xQueueCreate(20, sizeof(char));
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}
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~TdeckmaxKeyboard() override {
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vQueueDelete(queue);
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}
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std::string getName() const override { return "T-Deck Max Keyboard"; }
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std::string getDescription() const override { return "T-Deck Max TCA8418 I2C matrix keyboard"; }
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bool startLvgl(lv_display_t* display) override;
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bool stopLvgl() override;
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bool isAttached() const override;
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lv_indev_t* getLvglIndev() override { return kbHandle; }
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bool setBacklightDuty(uint8_t duty);
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void makeBacklightImpulse();
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};
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