Espressif Systems ESP Faq page 87

Chapter 4. Software framework
– #define LV_MEMCPY_MEMSET_STD 1
– #define LV_ATTRIBUTE_FAST_MEM IRAM_ATTR
Is there any example code for I2S driving LCD with ESP32?
• The interface type of the screen driven by I2S in ESP32/ESP32-S2 is i80(8080)
• For the application examples, please refer to
What is the maximum resolution supported by ESP32 LCD? What is the corresponding frame rate?
• There is no"maximum" limit on how much resolution can be supported. Due to the limited data transmission
bandwidth of the interface, the interface frame reduces as the LCD resolution increases. Thus, you need
confirm the LCD resolution based on this.
• Over the RGB interface, the maximum resolution of ESP32 LCD is 800 × 480; the maximum interface frame
rate is 59 (PCLK 30 MHz); and the average frame rate of LVGL is about 23. The average upper limit of the
frame rate of LVGL is 26, and the corresponding interface frame rate is 41 (PCLK 21 MHz).
How to enable PSRAM 120M Octal(DDR) on ESP32R8?
• ESP-IDF v5.1 or later versions are required.
• For details, please refer to
• Note: This feature is an experimental and has the following temperature-related risks:
– The chip may not work properly even with ECC enabled when the temperature is above 65°C.
– Temperature changes may also cause program crashes when accessing PSRAM/flash. For more details,
please refer to
What models of display touch panels are supported for testing the LVGL example on ESP32-S3?
The driver and examples in esp-iot-solution are not recommended. For details, please refer to
the LCD drivers and reference examples for ESP32 series
Does ESP32-S3 require an external PSRAM to use the RGB screen?
Yes, and it must be an Octal PSRAM at least and the clock must be set to 80 MHz or above. Otherwise,
the PCLK of RGB LCD cannot be set to a higher PCLK frequency and the frame rate will be too low.
Which image decoding formats are supported by the ESP32-S3 series of chips?
• Currently, ESP-IDF only supports the JPEG decoding format. For an application example, please refer to
esp-idf/examples/peripherals/lcd/tjpgd.
• If you develop based on LVGL, PNG, BMP, SJPG and GIF decoding formats are supported. For details,
please refer to LVGL
Espressif Systems
LCD
SPI Flash and External SPI RAM
SPI Flash and External SPI RAM
libs.
Submit Document Feedback
examples.
Configuration.
Configuration.
chips?.
70
Where are
Release master