FluxDC/main/i80_controller_example_main.c

/*
 * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: CC0-1.0
 */

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_timer.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
#include "esp_spiffs.h"
#include "driver/gpio.h"
#include "lvgl.h"

//新增触摸屏驱动头文件
#include "driver/i2c.h"
#include "esp_lcd_touch_ft5x06.h"

/*导入外部LVGL项目*/
#include "ui.h"

static const char *TAG = "example";

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////// Please update the following configuration according to your LCD spec //////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#define EXAMPLE_LCD_PIXEL_CLOCK_HZ     CONFIG_EXAMPLE_LCD_PIXEL_CLOCK_HZ

#define EXAMPLE_LCD_BK_LIGHT_ON_LEVEL  0
#define EXAMPLE_LCD_BK_LIGHT_OFF_LEVEL !EXAMPLE_LCD_BK_LIGHT_ON_LEVEL
/*定义数据接口*/
#define EXAMPLE_PIN_NUM_DATA0          18
#define EXAMPLE_PIN_NUM_DATA1          17
#define EXAMPLE_PIN_NUM_DATA2          16
#define EXAMPLE_PIN_NUM_DATA3          15
#define EXAMPLE_PIN_NUM_DATA4          7
#define EXAMPLE_PIN_NUM_DATA5          6
#define EXAMPLE_PIN_NUM_DATA6          5
#define EXAMPLE_PIN_NUM_DATA7          4

/*定义屏幕显示其他接口*/
#define EXAMPLE_PIN_NUM_PCLK           19
#define EXAMPLE_PIN_NUM_CS             45
#define EXAMPLE_PIN_NUM_DC             20
#define EXAMPLE_PIN_NUM_RST            8
#define EXAMPLE_PIN_NUM_BK_LIGHT       10

// The pixel number in horizontal and vertical
#define EXAMPLE_LCD_H_RES              320
#define EXAMPLE_LCD_V_RES              480
// Bit number used to represent command and parameter
#define EXAMPLE_LCD_CMD_BITS           8
#define EXAMPLE_LCD_PARAM_BITS         8

//定义所使用触摸屏驱动接口
#define EXAMPLE_I2C_NUM 0 // I2C number
#define EXAMPLE_I2C_SCL 21
#define EXAMPLE_I2C_SDA 47

#define EXAMPLE_LVGL_TICK_PERIOD_MS    2
#define EXAMPLE_LVGL_TASK_MAX_DELAY_MS 500
#define EXAMPLE_LVGL_TASK_MIN_DELAY_MS 1
#define EXAMPLE_LVGL_TASK_STACK_SIZE   (16 * 1024)
#define EXAMPLE_LVGL_TASK_PRIORITY     2

#define EXAMPLE_DMA_BURST_SIZE         64 // 16, 32, 64. Higher burst size can improve the performance when the DMA buffer comes from PSRAM

static SemaphoreHandle_t lvgl_mux = NULL;

extern void example_lvgl_demo_ui(lv_disp_t *disp);

static bool example_notify_lvgl_flush_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
{
    lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
    lv_disp_flush_ready(disp_driver);
    return false;
}

static void example_lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
{
    esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t) drv->user_data;
    int offsetx1 = area->x1;
    int offsetx2 = area->x2;
    int offsety1 = area->y1;
    int offsety2 = area->y2;
    // copy a buffer's content to a specific area of the display
    esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
}

/*新增电容触摸屏缓存*/
static void example_lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data)
{
    uint16_t touchpad_x[1] = {0};
    uint16_t touchpad_y[1] = {0};
    uint8_t touchpad_cnt = 0;

    /* Read touch controller data */
    esp_lcd_touch_read_data(drv->user_data);

    /* Get coordinates */
    bool touchpad_pressed = esp_lcd_touch_get_coordinates(drv->user_data, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);

    if (touchpad_pressed && touchpad_cnt > 0)
    {
        data->point.x = touchpad_x[0];
        data->point.y = touchpad_y[0];
        data->state = LV_INDEV_STATE_PRESSED;
    }
    else
    {
        data->state = LV_INDEV_STATE_RELEASED;
    }
}

static void example_increase_lvgl_tick(void *arg)
{
    /* Tell LVGL how many milliseconds has elapsed */
    lv_tick_inc(EXAMPLE_LVGL_TICK_PERIOD_MS);
}

bool example_lvgl_lock(int timeout_ms)
{
    // Convert timeout in milliseconds to FreeRTOS ticks
    // If `timeout_ms` is set to -1, the program will block until the condition is met
    const TickType_t timeout_ticks = (timeout_ms == -1) ? portMAX_DELAY : pdMS_TO_TICKS(timeout_ms);
    return xSemaphoreTakeRecursive(lvgl_mux, timeout_ticks) == pdTRUE;
}

void example_lvgl_unlock(void)
{
    xSemaphoreGiveRecursive(lvgl_mux);
}

static void example_lvgl_port_task(void *arg)
{
    ESP_LOGI(TAG, "Starting LVGL task");
    uint32_t task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
    while (1) {
        // Lock the mutex due to the LVGL APIs are not thread-safe
        if (example_lvgl_lock(-1)) {
            task_delay_ms = lv_timer_handler();
            // Release the mutex
            example_lvgl_unlock();
        }
        if (task_delay_ms > EXAMPLE_LVGL_TASK_MAX_DELAY_MS) {
            task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
        } else if (task_delay_ms < EXAMPLE_LVGL_TASK_MIN_DELAY_MS) {
            task_delay_ms = EXAMPLE_LVGL_TASK_MIN_DELAY_MS;
        }
        vTaskDelay(pdMS_TO_TICKS(task_delay_ms));
    }
}

#if CONFIG_EXAMPLE_LCD_IMAGE_FROM_FILE_SYSTEM
void example_init_filesystem(void)
{
    ESP_LOGI(TAG, "Initializing filesystem");
    esp_vfs_spiffs_conf_t conf = {
        .base_path = "/spiffs",
        .partition_label = "storage",
        .max_files = 5,
        .format_if_mount_failed = true
    };

    // Use settings defined above to initialize and mount SPIFFS filesystem.
    // Note: esp_vfs_spiffs_register is an all-in-one convenience function.
    esp_err_t ret = esp_vfs_spiffs_register(&conf);

    if (ret != ESP_OK) {
        if (ret == ESP_FAIL) {
            ESP_LOGE(TAG, "Failed to mount or format filesystem");
        } else if (ret == ESP_ERR_NOT_FOUND) {
            ESP_LOGE(TAG, "Failed to find SPIFFS partition");
        } else {
            ESP_LOGE(TAG, "Failed to initialize SPIFFS (%s)", esp_err_to_name(ret));
        }
        return;
    }

    size_t total = 0, used = 0;
    ret = esp_spiffs_info(conf.partition_label, &total, &used);
    if (ret != ESP_OK) {
        ESP_LOGE(TAG, "Failed to get SPIFFS partition information (%s). Formatting...", esp_err_to_name(ret));
        esp_spiffs_format(conf.partition_label);
        return;
    } else {
        ESP_LOGI(TAG, "Partition size: total: %zu, used: %zu", total, used);
    }
}
#endif // CONFIG_EXAMPLE_LCD_IMAGE_FROM_FILE_SYSTEM

void example_init_i80_bus(esp_lcd_panel_io_handle_t *io_handle, void *user_ctx)
{
    ESP_LOGI(TAG, "Initialize Intel 8080 bus");
    esp_lcd_i80_bus_handle_t i80_bus = NULL;
    esp_lcd_i80_bus_config_t bus_config = {
        .clk_src = LCD_CLK_SRC_DEFAULT,
        .dc_gpio_num = EXAMPLE_PIN_NUM_DC,
        .wr_gpio_num = EXAMPLE_PIN_NUM_PCLK,
        .data_gpio_nums = {
            EXAMPLE_PIN_NUM_DATA0,
            EXAMPLE_PIN_NUM_DATA1,
            EXAMPLE_PIN_NUM_DATA2,
            EXAMPLE_PIN_NUM_DATA3,
            EXAMPLE_PIN_NUM_DATA4,
            EXAMPLE_PIN_NUM_DATA5,
            EXAMPLE_PIN_NUM_DATA6,
            EXAMPLE_PIN_NUM_DATA7,
        },
        .bus_width = CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH,
        .max_transfer_bytes = EXAMPLE_LCD_H_RES * 100 * sizeof(uint16_t),
        .dma_burst_size = EXAMPLE_DMA_BURST_SIZE,
    };
    ESP_ERROR_CHECK(esp_lcd_new_i80_bus(&bus_config, &i80_bus));

    esp_lcd_panel_io_i80_config_t io_config = {
        .cs_gpio_num = EXAMPLE_PIN_NUM_CS,
        .pclk_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
        .trans_queue_depth = 10,
        .dc_levels = {
            .dc_idle_level = 0,
            .dc_cmd_level = 0,
            .dc_dummy_level = 0,
            .dc_data_level = 1,
        },
        .flags = {
            .swap_color_bytes = !LV_COLOR_16_SWAP, // Swap can be done in LvGL (default) or DMA
        },
        .on_color_trans_done = example_notify_lvgl_flush_ready,
        .user_ctx = user_ctx,
        .lcd_cmd_bits = EXAMPLE_LCD_CMD_BITS,
        .lcd_param_bits = EXAMPLE_LCD_PARAM_BITS,
    };
    ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, io_handle));
}

void example_init_lcd_panel(esp_lcd_panel_io_handle_t io_handle, esp_lcd_panel_handle_t *panel)
{
    esp_lcd_panel_handle_t panel_handle = NULL;

    ESP_LOGI(TAG, "Install LCD driver of st7789");
    esp_lcd_panel_dev_config_t panel_config = {
        .reset_gpio_num = EXAMPLE_PIN_NUM_RST,
        .rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
        .bits_per_pixel = 16,
    };
    ESP_ERROR_CHECK(esp_lcd_new_panel_st7789(io_handle, &panel_config, &panel_handle));

    esp_lcd_panel_reset(panel_handle);
    esp_lcd_panel_init(panel_handle);
    // Set inversion, x/y coordinate order, x/y mirror according to your LCD module spec
    // the gap is LCD panel specific, even panels with the same driver IC, can have different gap value
    esp_lcd_panel_invert_color(panel_handle, false);
    esp_lcd_panel_set_gap(panel_handle, 0, 0);

    esp_lcd_panel_mirror(panel_handle, true, false);
    *panel = panel_handle;
}

/*定义触摸屏控制的全局变量*/
esp_lcd_touch_handle_t tp = NULL;
/*初始化触摸屏驱动*/
void example_init_touch_panel(void)
{
    esp_lcd_panel_io_handle_t tp_io_handle = NULL;

    ESP_LOGI(TAG, "Initialize I2C");
    const i2c_config_t i2c_conf = {
        .mode = I2C_MODE_MASTER,
        .sda_io_num = EXAMPLE_I2C_SDA,
        .scl_io_num = EXAMPLE_I2C_SCL,
        .sda_pullup_en = GPIO_PULLUP_ENABLE,
        .scl_pullup_en = GPIO_PULLUP_ENABLE,
        .master.clk_speed = 400000,
    };
    /* Initialize I2C */
    ESP_ERROR_CHECK(i2c_param_config(EXAMPLE_I2C_NUM, &i2c_conf));
    ESP_ERROR_CHECK(i2c_driver_install(EXAMPLE_I2C_NUM, i2c_conf.mode, 0, 0, 0));

    esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_FT5x06_CONFIG();

    ESP_LOGI(TAG, "Initialize touch IO (I2C)");

    /* Touch IO handle */
    ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)EXAMPLE_I2C_NUM, &tp_io_config, &tp_io_handle));

    esp_lcd_touch_config_t tp_cfg = {
        .x_max = EXAMPLE_LCD_V_RES,
        .y_max = EXAMPLE_LCD_H_RES,
        .rst_gpio_num = -1,
        .int_gpio_num = -1,
        .flags = {
            .swap_xy = 0,
            .mirror_x = 0,
            .mirror_y = 0,
        },
    };

    ESP_LOGI(TAG, "Initialize touch controller FT5X06");
    ESP_ERROR_CHECK(esp_lcd_touch_new_i2c_ft5x06(tp_io_handle, &tp_cfg, &tp));
}


void app_main(void)
{
    static lv_disp_draw_buf_t disp_buf; // contains internal graphic buffer(s) called draw buffer(s)
    static lv_disp_drv_t disp_drv;      // contains callback functions

#if EXAMPLE_PIN_NUM_BK_LIGHT >= 0
    ESP_LOGI(TAG, "Turn off LCD backlight");
    gpio_config_t bk_gpio_config = {
        .mode = GPIO_MODE_OUTPUT,
        .pin_bit_mask = 1ULL << EXAMPLE_PIN_NUM_BK_LIGHT
    };
    ESP_ERROR_CHECK(gpio_config(&bk_gpio_config));
    gpio_set_level(EXAMPLE_PIN_NUM_BK_LIGHT, EXAMPLE_LCD_BK_LIGHT_OFF_LEVEL);
#endif // EXAMPLE_PIN_NUM_BK_LIGHT >= 0

#if CONFIG_EXAMPLE_LCD_IMAGE_FROM_FILE_SYSTEM
    example_init_filesystem();
#endif // CONFIG_EXAMPLE_LCD_IMAGE_FROM_FILE_SYSTEM

    esp_lcd_panel_io_handle_t io_handle = NULL;
    example_init_i80_bus(&io_handle, &disp_drv);

    esp_lcd_panel_handle_t panel_handle = NULL;
    example_init_lcd_panel(io_handle, &panel_handle);

    // Stub: user can flush pre-defined pattern to the screen before we turn on the screen or backlight

    ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));

#if EXAMPLE_PIN_NUM_BK_LIGHT >= 0
    ESP_LOGI(TAG, "Turn on LCD backlight");
    gpio_set_level(EXAMPLE_PIN_NUM_BK_LIGHT, EXAMPLE_LCD_BK_LIGHT_ON_LEVEL);
#endif // EXAMPLE_PIN_NUM_BK_LIGHT >= 0

    /*将触摸屏驱动初始化放置到这里*/
    example_init_touch_panel();

    ESP_LOGI(TAG, "Initialize LVGL library");
    lv_init();
    // alloc draw buffers used by LVGL
    // it's recommended to choose the size of the draw buffer(s) to be at least 1/10 screen sized
    uint32_t draw_buf_alloc_caps = 0;

#if CONFIG_EXAMPLE_LCD_I80_COLOR_IN_PSRAM
    draw_buf_alloc_caps |= MALLOC_CAP_SPIRAM;
#endif
    lv_color_t *buf1 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
    lv_color_t *buf2 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
    assert(buf1);
    assert(buf2);
    ESP_LOGI(TAG, "buf1@%p, buf2@%p", buf1, buf2);
    // initialize LVGL draw buffers
    lv_disp_draw_buf_init(&disp_buf, buf1, buf2, EXAMPLE_LCD_H_RES * 100);

    ESP_LOGI(TAG, "Register display driver to LVGL");
    lv_disp_drv_init(&disp_drv);
    disp_drv.hor_res = EXAMPLE_LCD_H_RES;
    disp_drv.ver_res = EXAMPLE_LCD_V_RES;
    disp_drv.flush_cb = example_lvgl_flush_cb;
    disp_drv.draw_buf = &disp_buf;
    disp_drv.user_data = panel_handle;
    lv_disp_t *disp = lv_disp_drv_register(&disp_drv);

    ESP_LOGI(TAG, "Install LVGL tick timer");
    // Tick interface for LVGL (using esp_timer to generate 2ms periodic event)
    const esp_timer_create_args_t lvgl_tick_timer_args = {
        .callback = &example_increase_lvgl_tick,
        .name = "lvgl_tick"
    };
    esp_timer_handle_t lvgl_tick_timer = NULL;
    ESP_ERROR_CHECK(esp_timer_create(&lvgl_tick_timer_args, &lvgl_tick_timer));
    ESP_ERROR_CHECK(esp_timer_start_periodic(lvgl_tick_timer, EXAMPLE_LVGL_TICK_PERIOD_MS * 1000));

    /*安装触摸屏驱动函数*/
    static lv_indev_drv_t indev_drv; // Input device driver (Touch)
    lv_indev_drv_init(&indev_drv);
    indev_drv.type = LV_INDEV_TYPE_POINTER;
    indev_drv.disp = disp;
    indev_drv.read_cb = example_lvgl_touch_cb;
    indev_drv.user_data = tp;

    lv_indev_drv_register(&indev_drv); 

    lvgl_mux = xSemaphoreCreateRecursiveMutex();
    assert(lvgl_mux);
    ESP_LOGI(TAG, "Create LVGL task");
    xTaskCreate(example_lvgl_port_task, "LVGL", EXAMPLE_LVGL_TASK_STACK_SIZE, NULL, EXAMPLE_LVGL_TASK_PRIORITY, NULL);

    ESP_LOGI(TAG, "Display LVGL animation");



    // Lock the mutex due to the LVGL APIs are not thread-safe
    if (example_lvgl_lock(-1)) {
        //example_lvgl_demo_ui(disp);
        ui_init();

        // Release the mutex
        example_lvgl_unlock();
    }
}