Hello @Lewis3579 and welcome to the Community 🙂,
I recommend you to refer to AN5020 application note and precisely section: 8.3 DCMI examples based on STM32CubeMX and follow the steps shared in. This section details the following typical example of DCMI use capture and display of RGB data
Data captured in RGB565 format with QVGA (320 × 240) resolution, stored in the SDRAM, and displayed on the LCD‑TFT.
Also I advise you to take a look at DCMI_CaptureMode example in STM32CubeF4 firmware under this path \STM32Cube_FW_F4_V1.28.0\Projects\STM324x9I_EVAL\Examples\DCMI\DCMI_CaptureMode
This example provides a short description of how to use the DCMI to interface with camera module and display in continuous mode the picture on LCD.
I hope this help you.
Kaouthar
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