waveshare/esp_lcd_hx8394

readme

# ESP LCD HX8394

[![Component Registry](https://components.espressif.com/components/waveshare/esp_lcd_hx8394/badge.svg)](https://components.espressif.com/components/waveshare/esp_lcd_hx8394)

Implementation of the HX8394 LCD controller with esp_lcd component.

| LCD controller | Communication interface | Component name |                                   Link to datasheet                                   |
| :------------: | :---------------------: | :------------: | :-----------------------------------------------------------------------------------: |
|     HX8394     |        MIPI-DSI         | esp_lcd_hx8394 | —— |

**Note**: MIPI-DSI interface only supports ESP-IDF v5.3 and above versions.

## Add to project

Packages from this repository are uploaded to [Espressif's component service](https://components.espressif.com/).
You can add them to your project via `idf.py add-dependancy`, e.g.

```
    idf.py add-dependency "waveshare/esp_lcd_hx8394"
```

Alternatively, you can create `idf_component.yml`. More is in [Espressif's documentation](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-component-manager.html).

## Example use

```c
/**
 * Uncomment these line if use custom initialization commands.
 * The array should be declared as static const and positioned outside the function.
 */
// static const hx8394_lcd_init_cmd_t lcd_init_cmds[] = {
//  {cmd, { data }, data_size, delay_ms}
//  {0x11, (uint8_t []){0x00}, 120, 0},
//  {0x29, (uint8_t []){0x00},  20, 0},
//     ...
// };

    ESP_LOGI(TAG, "MIPI DSI PHY Powered on");
    esp_ldo_channel_handle_t ldo_mipi_phy = NULL;
    esp_ldo_channel_config_t ldo_mipi_phy_config = {
        .chan_id = 3,
        .voltage_mv = 2500,
    };
    ESP_ERROR_CHECK(esp_ldo_acquire_channel(&ldo_mipi_phy_config, &ldo_mipi_phy));

    ESP_LOGI(TAG, "Initialize MIPI DSI bus");
    esp_lcd_dsi_bus_handle_t mipi_dsi_bus = NULL;
    esp_lcd_dsi_bus_config_t bus_config = HX8394_PANEL_BUS_DSI_2CH_CONFIG();
    ESP_ERROR_CHECK(esp_lcd_new_dsi_bus(&bus_config, &mipi_dsi_bus));

    ESP_LOGI(TAG, "Install panel IO");
    esp_lcd_panel_io_handle_t mipi_dbi_io = NULL;
    esp_lcd_dbi_io_config_t dbi_config = HX8394_PANEL_IO_DBI_CONFIG();
    ESP_ERROR_CHECK(esp_lcd_new_panel_io_dbi(mipi_dsi_bus, &dbi_config, &mipi_dbi_io));

    ESP_LOGI(TAG, "Install HX8394 panel driver");
    esp_lcd_panel_handle_t panel_handle = NULL;
    const esp_lcd_dpi_panel_config_t dpi_config = HX8394_1024_600_PANEL_30HZ_DPI_CONFIG(EXAMPLE_MIPI_DPI_PX_FORMAT);
    hx8394_vendor_config_t vendor_config = {
        .flags = {
            .use_mipi_interface = 1,
        },
        .mipi_config = {
            .dsi_bus = mipi_dsi_bus,
            .dpi_config = &dpi_config,
        },
    };
    const esp_lcd_panel_dev_config_t panel_config = {
        .reset_gpio_num = EXAMPLE_LCD_IO_RST,           // Set to -1 if not use
        .rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,     // Implemented by LCD command `36h`
        .bits_per_pixel = EXAMPLE_LCD_BIT_PER_PIXEL,    // Implemented by LCD command `3Ah` (16/18/24)
        .vendor_config = &vendor_config,
    };
    ESP_ERROR_CHECK(esp_lcd_new_panel_hx8394(mipi_dbi_io, &panel_config, &panel_handle));
    ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
```