Tactility/Drivers/CST816S/Source/Cst816sTouch.cpp

#include "Cst816Touch.h"

#include <Tactility/Log.h>

#include <driver/i2c.h>
#include <esp_err.h>
#include <esp_lcd_touch.h>
#include <esp_lcd_touch_cst816s.h>
#include <esp_lvgl_port.h>

#define TAG "cst816s"

bool Cst816sTouch::start(lv_display_t* display) {
    TT_LOG_I(TAG, "Starting");
    const esp_lcd_panel_io_i2c_config_t touch_io_config = ESP_LCD_TOUCH_IO_I2C_CST816S_CONFIG();

    if (esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)configuration->port, &touch_io_config, &ioHandle) != ESP_OK) {
        TT_LOG_E(TAG, "Touch I2C IO init failed");
        return false;
    }

    esp_lcd_touch_config_t config = {
        .x_max = configuration->xMax,
        .y_max = configuration->yMax,
        .rst_gpio_num = configuration->pinReset,
        .int_gpio_num = configuration->pinInterrupt,
        .levels = {
            .reset = configuration->pinResetLevel,
            .interrupt = configuration->pinInterruptLevel,
        },
        .flags = {
            .swap_xy = configuration->swapXY,
            .mirror_x = configuration->mirrorX,
            .mirror_y = configuration->mirrorY,
        },
        .process_coordinates = nullptr,
        .interrupt_callback = nullptr,
        .user_data = nullptr,
        .driver_data = nullptr
    };

    if (esp_lcd_touch_new_i2c_cst816s(ioHandle, &config, &touchHandle) != ESP_OK) {
        TT_LOG_E(TAG, "Driver init failed");
        cleanup();
        return false;
    }

    const lvgl_port_touch_cfg_t touch_cfg = {
        .disp = display,
        .handle = touchHandle,
    };

    deviceHandle = lvgl_port_add_touch(&touch_cfg);
    if (deviceHandle == nullptr) {
        TT_LOG_E(TAG, "Adding touch failed");
        cleanup();
        return false;
    }

    TT_LOG_I(TAG, "Finished");
    return true;
}

bool Cst816sTouch::stop() {
    cleanup();
    return true;
}

void Cst816sTouch::cleanup() {
    if (deviceHandle != nullptr) {
        lv_indev_delete(deviceHandle);
        deviceHandle = nullptr;
    }

    if (touchHandle != nullptr) {
        esp_lcd_touch_del(touchHandle);
        touchHandle = nullptr;
    }

    if (ioHandle != nullptr) {
        esp_lcd_panel_io_del(ioHandle);
        ioHandle = nullptr;
    }
}