mirror of
https://github.com/ByteWelder/Tactility.git
synced 2026-02-18 19:03:16 +00:00
82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
#include "keyboard.h"
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#include "config.h"
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#include "lvgl.h"
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#include "TactilityCore.h"
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#include "lvgl/LvglKeypad.h"
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#include "hal/i2c/I2c.h"
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#include <driver/i2c.h>
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#define TAG "tdeck_keyboard"
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typedef struct {
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lv_indev_t* device;
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} KeyboardData;
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static inline bool keyboard_i2c_read(uint8_t* output) {
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return tt::hal::i2c::masterRead(TDECK_KEYBOARD_I2C_BUS_HANDLE, TDECK_KEYBOARD_SLAVE_ADDRESS, output, 1);
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}
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void keyboard_wait_for_response() {
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TT_LOG_I(TAG, "Waiting for keyboard response...");
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bool awake = false;
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uint8_t read_buffer = 0x00;
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do {
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awake = keyboard_i2c_read(&read_buffer);
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if (!awake) {
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tt::delay_ms(100);
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}
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} while (!awake);
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TT_LOG_I(TAG, "Keyboard responded");
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}
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/**
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* The callback simulates press and release events, because the T-Deck
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* keyboard only publishes press events on I2C.
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* LVGL currently works without those extra release events, but they
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* are implemented for correctness and future compatibility.
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*
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* @param indev_drv
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* @param data
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*/
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static void keyboard_read_callback(TT_UNUSED lv_indev_t* indev, lv_indev_data_t* data) {
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static uint8_t last_buffer = 0x00;
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uint8_t read_buffer = 0x00;
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// Defaults
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data->key = 0;
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data->state = LV_INDEV_STATE_RELEASED;
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if (keyboard_i2c_read(&read_buffer)) {
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if (read_buffer == 0 && read_buffer != last_buffer) {
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TT_LOG_I(TAG, "Released %d", last_buffer);
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data->key = last_buffer;
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data->state = LV_INDEV_STATE_RELEASED;
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} else if (read_buffer != 0) {
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TT_LOG_I(TAG, "Pressed %d", read_buffer);
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data->key = read_buffer;
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data->state = LV_INDEV_STATE_PRESSED;
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}
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}
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last_buffer = read_buffer;
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}
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Keyboard keyboard_alloc(_Nullable lv_disp_t* display) {
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auto* data = static_cast<KeyboardData*>(malloc(sizeof(KeyboardData)));
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data->device = lv_indev_create();
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lv_indev_set_type(data->device, LV_INDEV_TYPE_KEYPAD);
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lv_indev_set_read_cb(data->device, &keyboard_read_callback);
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lv_indev_set_display(data->device, display);
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tt::lvgl::keypad_set_indev(data->device);
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return data;
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}
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void keyboard_free(Keyboard keyboard) {
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auto* data = static_cast<KeyboardData*>(keyboard);
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lv_indev_delete(data->device);
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free(data);
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}
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