# ESP LCD ST77916 [![Component Registry](https://components.espressif.com/components/espressif/esp_lcd_ST77916/badge.svg)](https://components.espressif.com/components/espressif/esp_lcd_st77916) Implementation of the ST77916 LCD controller with [esp_lcd](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/peripherals/lcd.html) component. | LCD controller | Communication interface | Component name | Link to datasheet | | :------------: | :---------------------: | :------------: | :---------------------------------------------------------------------------: | | ST77916 | SPI/QSPI | esp_lcd_st77916 | [PDF](https://dl.espressif.com/AE/esp-iot-solution/ST77916_SPEC_V1.0.pdf) | ## 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 "espressif/esp_lcd_st77916" ``` 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). ## Initialization Code ### SPI Interface ```c ESP_LOGI(TAG, "Initialize SPI bus"); const spi_bus_config_t bus_config = ST77916_PANEL_BUS_SPI_CONFIG(EXAMPLE_PIN_NUM_LCD_PCLK, EXAMPLE_PIN_NUM_LCD_DATA0); ESP_ERROR_CHECK(spi_bus_initialize(EXAMPLE_LCD_HOST, &bus_config, SPI_DMA_CH_AUTO)); ESP_LOGI(TAG, "Install panel IO"); esp_lcd_panel_io_handle_t io_handle = NULL; const esp_lcd_panel_io_spi_config_t io_config = ST77916_PANEL_IO_SPI_CONFIG(EXAMPLE_PIN_NUM_LCD_CS, EXAMPLE_PIN_NUM_LCD_DC, callback, &callback_data); ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)EXAMPLE_LCD_HOST, &io_config, &io_handle)); /** * Uncomment these line if use custom initialization commands. * The array should be declared as static const and positioned outside the function. */ // static const ST77916_lcd_init_cmd_t lcd_init_cmds[] = { // // {cmd, { data }, data_size, delay_ms} // {0x44, (uint8_t []){0x00, 0xc8}, 2, 0}, // {0x35, (uint8_t []){0x00}, 0, 0}, // {0x53, (uint8_t []){0x20}, 1, 25}, // {0x29, (uint8_t []){0x00}, 0, 120}, // ... // }; ESP_LOGI(TAG, "Install ST77916 panel driver"); esp_lcd_panel_handle_t panel_handle = NULL; ST77916_vendor_config_t vendor_config = { // .init_cmds = lcd_init_cmds, // Uncomment these line if use custom initialization commands // .init_cmds_size = sizeof(lcd_init_cmds) / sizeof(ST77916_lcd_init_cmd_t), .flags = { .use_qspi_interface = 0, }, }; const esp_lcd_panel_dev_config_t panel_config = { .reset_gpio_num = EXAMPLE_PIN_NUM_LCD_RST, .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) .vendor_config = &vendor_config, }; ESP_ERROR_CHECK(esp_lcd_new_panel_st77916(io_handle, &panel_config, &panel_handle)); esp_lcd_panel_reset(panel_handle); esp_lcd_panel_init(panel_handle); esp_lcd_panel_disp_on_off(panel_handle, true); ``` ### QSPI Interface ```c ESP_LOGI(TAG, "Initialize QSPI bus"); const esp_lcd_panel_io_spi_config_t io_config = ST77916_PANEL_BUS_QSPI_CONFIG(EXAMPLE_PIN_NUM_LCD_PCLK, EXAMPLE_PIN_NUM_LCD_DATA0, EXAMPLE_PIN_NUM_LCD_DATA1, EXAMPLE_PIN_NUM_LCD_DATA2, EXAMPLE_PIN_NUM_LCD_DATA3); ESP_ERROR_CHECK(spi_bus_initialize(EXAMPLE_LCD_HOST, &buscfg, SPI_DMA_CH_AUTO)); ESP_LOGI(TAG, "Install panel IO"); esp_lcd_panel_io_handle_t io_handle = NULL; const esp_lcd_panel_io_spi_config_t io_config = ST77916_PANEL_IO_QSPI_CONFIG(EXAMPLE_PIN_NUM_LCD_CS, callback, &callback_data); ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)EXAMPLE_LCD_HOST, &io_config, &io_handle)); /** * Uncomment these line if use custom initialization commands. * The array should be declared as static const and positioned outside the function. */ // static const ST77916_lcd_init_cmd_t lcd_init_cmds[] = { // // {cmd, { data }, data_size, delay_ms} // {0xF0, (uint8_t []){0x08}, 1, 0}, // {0xF2, (uint8_t []){0x08}, 1, 0}, // {0x9B, (uint8_t []){0x51}, 1, 0}, // {0x86, (uint8_t []){0x53}, 1, 0}, // ... // }; ESP_LOGI(TAG, "Install ST77916 panel driver"); esp_lcd_panel_handle_t panel_handle = NULL; ST77916_vendor_config_t vendor_config = { // .init_cmds = lcd_init_cmds, // Uncomment these line if use custom initialization commands // .init_cmds_size = sizeof(lcd_init_cmds) / sizeof(ST77916_lcd_init_cmd_t), .flags = { .use_qspi_interface = 1, }, }; const esp_lcd_panel_dev_config_t panel_config = { .reset_gpio_num = EXAMPLE_PIN_NUM_LCD_RST, .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) .vendor_config = &vendor_config, }; ESP_ERROR_CHECK(esp_lcd_new_panel_st77916(io_handle, &panel_config, &panel_handle)); esp_lcd_panel_reset(panel_handle);s esp_lcd_panel_init(panel_handle); esp_lcd_panel_disp_on_off(panel_handle, true); ```
idf.py add-dependency "espressif/esp_lcd_st77916^0.0.1"