CoreS3-Box/examples/usb_camera_lcd_display

USB Stream LCD Display Example

Board	Support Status
ESP32-S3-BOX	NO
ESP32-S3-BOX-Lite	NO
ESP32-S3-BOX-3	YES

This routine demonstrates how to use the usb_stream component to acquire a USB camera image and display it adaptively on the LCD screen.

• Pressing the boot button can switch the display resolution.
• For better performance, please use ESP-IDF release/v5.0 or above versions.
• Currently only images with a resolution smaller than the screen resolution are displayed
• When the image width is equal to the screen width, the refresh rate is at its highest.

Hardware

• An ESP32-S3-BOX-3 development board with 320*240 LCD.
• A USB camera (Can be connected to USB port or Expansion Connector).
• An USB Type-C cable for Power supply and programming (Please connect to UART port instead of USB port)

Note: Error message with A fatal error occurred: Could not open /dev/ttyACM0, the port doesn't exist: Please first make sure development board connected, then make board into "Download Boot" mode to upload by following steps:

1. keep pressing "BOOT(SW2)" button
2. short press "RST(SW1)" button
3. release "BOOT(SW2)".
4. upload program and reset

PSRAM 120M DDR

The PSRAM 120M DDR feature is intended to achieve the best performance of RGB LCD. It is only available with ESP-IDF release/v5.1 and above. It can be used by enabling the IDF_EXPERIMENTAL_FEATURES, SPIRAM_SPEED_120M, SPIRAM_MODE_OCT options. see here for more details.

Note: The PSRAM 120 MHz DDR is an experimental feature and it has temperature risks as below.

• Cannot guarantee normal functioning with a temperature higher than 65 degrees Celsius.
• Temperature changes can also cause the crash of accessing to PSRAM/Flash, see here for more details.

How To Use

Note:

1. First delete existing build, sdkconfig , sdkconfig.old

rm -rf build sdkconfig sdkconfig.old

2. Use the command line to enable the relevant configuration

idf.py -D SDKCONFIG_DEFAULTS="sdkconfig.defaults;sdkconfig.psram_octal_120m" reconfigure

3. Compile and burn

idf.py build flash monitor