ESP32 Forum

Hi,

In ESP32-S3-EYE examples logo_en_240x240_Lcd.h files has the values to display Espressif Logo. The logo is displayed in standalone mode in ESP32-S3-EYE LCD.

Header File: https://github.com/espressif/esp-who/bl ... x240_lcd.h

The header file values are changing between 65355 to 0.


May I know how to convert a JPEG image to this format? I tried some conversions. The converted value is not 65535, it is 255 or 0XFF.


Best Regards,
Dheeran

Hi,
logo_en_240x240_lcd is in rgb565 format. which is required for lcd display.
you should convert jpeg format to rgb565(16bit element) not to rgb888.

Hi,

Thanks for the information.

May I know how to convert jpeg format to rgb565(16bit element)? Is there any tool required?

You can try to use this API：https://github.com/espressif/esp32-came ... era.c#L385

Tried but it is not working. Please check the attached log.

Hi,

Any update?

To refresh a JPEG image to the LCD in RGB565 format, you need to perform JPEG to RGB565 conversion. This conversion is realized through the `bool jpg2rgb565(const uint8_t *src, size_t src_len, uint8_t * out, jpg_scale_t scale);`. You can print or keep the converted data directly so that the converted RGB565 data can be used directly at the next startup.

Of course, you can also provide a JPEG image directly. I will try to test it.

Hi,

Please try the attached JPEG image.

Here is an example of decoding. Please refer to the example to decode the picture.