esp_lcd_dsi.c

#include "soc/soc_caps.h"

#if SOC_MIPI_DSI_SUPPORTED
#include "esp_check.h"
#include "esp_log.h"
#include "esp_lcd_panel_commands.h"
#include "esp_lcd_panel_interface.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_mipi_dsi.h"
#include "esp_lcd_panel_vendor.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_lcd_dsi.h"

#include "i2c_bus.h"

#define DSI_CMD_GS_BIT (1 << 0)
#define DSI_CMD_SS_BIT (1 << 1)

typedef struct
{
    esp_lcd_panel_io_handle_t io;
    int reset_gpio_num;
    uint8_t madctl_val; // save current value of LCD_CMD_MADCTL register
    uint8_t colmod_val; // save surrent value of LCD_CMD_COLMOD register
    const dsi_lcd_init_cmd_t *init_cmds;
    uint16_t init_cmds_size;
    struct
    {
        unsigned int reset_level : 1;
    } flags;
    // To save the original functions of MIPI DPI panel
    esp_err_t (*del)(esp_lcd_panel_t *panel);
    esp_err_t (*init)(esp_lcd_panel_t *panel);
} dsi_panel_t;

static const char *TAG = "Waveshare DSI";

static esp_err_t panel_dsi_del(esp_lcd_panel_t *panel);
static esp_err_t panel_dsi_init(esp_lcd_panel_t *panel);
static esp_err_t panel_dsi_reset(esp_lcd_panel_t *panel);
static esp_err_t panel_dsi_invert_color(esp_lcd_panel_t *panel, bool invert_color_data);
static esp_err_t panel_dsi_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y);
static esp_err_t panel_dsi_disp_on_off(esp_lcd_panel_t *panel, bool on_off);

esp_err_t esp_lcd_new_panel_dsi(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config,
                                   esp_lcd_panel_handle_t *ret_panel)
{
    ESP_LOGI(TAG, "version: %d.%d.%d", ESP_LCD_DSI_VER_MAJOR, ESP_LCD_DSI_VER_MINOR,
             ESP_LCD_DSI_VER_PATCH);
    ESP_RETURN_ON_FALSE(io && panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, TAG, "invalid arguments");
    dsi_vendor_config_t *vendor_config = (dsi_vendor_config_t *)panel_dev_config->vendor_config;
    ESP_RETURN_ON_FALSE(vendor_config && vendor_config->mipi_config.dpi_config && vendor_config->mipi_config.dsi_bus, ESP_ERR_INVALID_ARG, TAG,
                        "invalid vendor config");

    esp_err_t ret = ESP_OK;
    dsi_panel_t *dsi = (dsi_panel_t *)calloc(1, sizeof(dsi_panel_t));
    ESP_RETURN_ON_FALSE(dsi, ESP_ERR_NO_MEM, TAG, "no mem for dsi panel");

    if (panel_dev_config->reset_gpio_num >= 0)
    {
        gpio_config_t io_conf = {
            .mode = GPIO_MODE_OUTPUT,
            .pin_bit_mask = 1ULL << panel_dev_config->reset_gpio_num,
        };
        ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for RST line failed");
    }

    switch (panel_dev_config->color_space)
    {
    case LCD_RGB_ELEMENT_ORDER_RGB:
        dsi->madctl_val = 0;
        break;
    case LCD_RGB_ELEMENT_ORDER_BGR:
        dsi->madctl_val |= LCD_CMD_BGR_BIT;
        break;
    default:
        ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported color space");
        break;
    }

    dsi->io = io;
    dsi->init_cmds = vendor_config->init_cmds;
    dsi->init_cmds_size = vendor_config->init_cmds_size;
    dsi->reset_gpio_num = panel_dev_config->reset_gpio_num;
    dsi->flags.reset_level = panel_dev_config->flags.reset_active_high;

    i2c_config_t conf = {
        .mode = I2C_MODE_MASTER,
        .sda_io_num = 7,
        // .sda_pullup_en = GPIO_PULLUP_ENABLE,
        .scl_io_num = 8,
        // .scl_pullup_en = GPIO_PULLUP_ENABLE,
        .master.clk_speed = 100000,
    };

    i2c_bus_handle_t i2c0_bus = i2c_bus_create(I2C_NUM_0, &conf);
    i2c_bus_device_handle_t i2c0_device1 = i2c_bus_device_create(i2c0_bus, 0x45, 0);

    uint8_t data = 0x01;
    i2c_bus_write_bytes(i2c0_device1, 0xc0, 1, &data);
    i2c_bus_write_bytes(i2c0_device1, 0xc2, 1, &data);
    i2c_bus_write_bytes(i2c0_device1, 0xac, 1, &data);

    data = 0x55;
    i2c_bus_write_bytes(i2c0_device1, 0xab, 1, &data);

    data = 0x01;
    i2c_bus_write_bytes(i2c0_device1, 0xaa, 1, &data);
//    data = 0x02;
    i2c_bus_write_bytes(i2c0_device1, 0xad, 1, &data);

    i2c_bus_device_delete(&i2c0_device1);
    i2c_bus_delete(&i2c0_bus);

    vTaskDelay(pdMS_TO_TICKS(1000));

    // Create MIPI DPI panel
    esp_lcd_panel_handle_t panel_handle = NULL;
    ESP_GOTO_ON_ERROR(esp_lcd_new_panel_dpi(vendor_config->mipi_config.dsi_bus, vendor_config->mipi_config.dpi_config, &panel_handle), err, TAG,
                      "create MIPI DPI panel failed");
    ESP_LOGD(TAG, "new MIPI DPI panel @%p", panel_handle);

    // Save the original functions of MIPI DPI panel
    dsi->del = panel_handle->del;
    dsi->init = panel_handle->init;
    // Overwrite the functions of MIPI DPI panel
    panel_handle->del = panel_dsi_del;
    panel_handle->init = panel_dsi_init;
    panel_handle->reset = panel_dsi_reset;
    panel_handle->mirror = panel_dsi_mirror;
    panel_handle->invert_color = panel_dsi_invert_color;
    panel_handle->disp_on_off = panel_dsi_disp_on_off;
    panel_handle->user_data = dsi;
    *ret_panel = panel_handle;
    ESP_LOGD(TAG, "new dsi panel @%p", dsi);

    return ESP_OK;

err:
    if (dsi)
    {
        if (panel_dev_config->reset_gpio_num >= 0)
        {
            gpio_reset_pin(panel_dev_config->reset_gpio_num);
        }
        free(dsi);
    }
    return ret;
}

static const dsi_lcd_init_cmd_t vendor_specific_init_default[] = {
    //  {cmd, { data }, data_size, delay_ms}
    {0x11, (uint8_t[]){0x00}, 1, 120},
    {0x29, (uint8_t[]){0x00}, 1, 20},
};

static esp_err_t panel_dsi_del(esp_lcd_panel_t *panel)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;

    if (dsi->reset_gpio_num >= 0)
    {
        gpio_reset_pin(dsi->reset_gpio_num);
    }
    // Delete MIPI DPI panel
    dsi->del(panel);
    ESP_LOGD(TAG, "del dsi panel @%p", dsi);
    free(dsi);

    return ESP_OK;
}

static esp_err_t panel_dsi_init(esp_lcd_panel_t *panel)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = dsi->io;
    const dsi_lcd_init_cmd_t *init_cmds = NULL;
    uint16_t init_cmds_size = 0;
    bool is_cmd_overwritten = false;

    // uint8_t ID[3];
    // ESP_RETURN_ON_ERROR(esp_lcd_panel_io_rx_param(io, 0x04, ID, 3), TAG, "read ID failed");

    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]){
                                                                          dsi->madctl_val,
                                                                      },
                                                  1),
                        TAG, "send command failed");

    // vendor specific initialization, it can be different between manufacturers
    // should consult the LCD supplier for initialization sequence code
    if (dsi->init_cmds)
    {
        init_cmds = dsi->init_cmds;
        init_cmds_size = dsi->init_cmds_size;
    }
    else
    {
        init_cmds = vendor_specific_init_default;
        init_cmds_size = sizeof(vendor_specific_init_default) / sizeof(dsi_lcd_init_cmd_t);
    }

    for (int i = 0; i < init_cmds_size; i++)
    {
        // Check if the command has been used or conflicts with the internal
        if (init_cmds[i].data_bytes > 0)
        {
            switch (init_cmds[i].cmd)
            {
            case LCD_CMD_MADCTL:
                is_cmd_overwritten = true;
                dsi->madctl_val = ((uint8_t *)init_cmds[i].data)[0];
                break;
            default:
                is_cmd_overwritten = false;
                break;
            }

            if (is_cmd_overwritten)
            {
                is_cmd_overwritten = false;
                ESP_LOGW(TAG, "The %02Xh command has been used and will be overwritten by external initialization sequence",
                         init_cmds[i].cmd);
            }
        }

        // Send command
        ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, init_cmds[i].cmd, init_cmds[i].data, init_cmds[i].data_bytes), TAG, "send command failed");
        vTaskDelay(pdMS_TO_TICKS(init_cmds[i].delay_ms));
    }
    ESP_LOGD(TAG, "send init commands success");

    ESP_RETURN_ON_ERROR(dsi->init(panel), TAG, "init MIPI DPI panel failed");

    return ESP_OK;
}

static esp_err_t panel_dsi_reset(esp_lcd_panel_t *panel)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = dsi->io;

    // Perform hardware reset
    if (dsi->reset_gpio_num >= 0)
    {
        gpio_set_level(dsi->reset_gpio_num, !dsi->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(5));
        gpio_set_level(dsi->reset_gpio_num, dsi->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(10));
        gpio_set_level(dsi->reset_gpio_num, !dsi->flags.reset_level);
        vTaskDelay(pdMS_TO_TICKS(120));
    }
    else if (io)
    { // Perform software reset
        ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_SWRESET, NULL, 0), TAG, "send command failed");
        vTaskDelay(pdMS_TO_TICKS(120));
    }

    return ESP_OK;
}

static esp_err_t panel_dsi_invert_color(esp_lcd_panel_t *panel, bool invert_color_data)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = dsi->io;
    uint8_t command = 0;

    ESP_RETURN_ON_FALSE(io, ESP_ERR_INVALID_STATE, TAG, "invalid panel IO");

    if (invert_color_data)
    {
        command = LCD_CMD_INVON;
    }
    else
    {
        command = LCD_CMD_INVOFF;
    }
    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");

    return ESP_OK;
}

static esp_err_t panel_dsi_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = dsi->io;
    uint8_t madctl_val = dsi->madctl_val;

    ESP_RETURN_ON_FALSE(io, ESP_ERR_INVALID_STATE, TAG, "invalid panel IO");

    // Control mirror through LCD command
    if (mirror_x)
    {
        madctl_val |= DSI_CMD_GS_BIT;
    }
    else
    {
        madctl_val &= ~DSI_CMD_GS_BIT;
    }
    if (mirror_y)
    {
        madctl_val |= DSI_CMD_SS_BIT;
    }
    else
    {
        madctl_val &= ~DSI_CMD_SS_BIT;
    }

    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]){madctl_val}, 1), TAG, "send command failed");
    dsi->madctl_val = madctl_val;

    return ESP_OK;
}

static esp_err_t panel_dsi_disp_on_off(esp_lcd_panel_t *panel, bool on_off)
{
    dsi_panel_t *dsi = (dsi_panel_t *)panel->user_data;
    esp_lcd_panel_io_handle_t io = dsi->io;
    int command = 0;

    if (on_off)
    {
        command = LCD_CMD_DISPON;
    }
    else
    {
        command = LCD_CMD_DISPOFF;
    }
    ESP_RETURN_ON_ERROR(esp_lcd_panel_io_tx_param(io, command, NULL, 0), TAG, "send command failed");
    return ESP_OK;
}
#endif