OV2640 Camera Sensor

Capture JPEG images using ArduCam 2MP Mini Plus camera module with OV2640 sensor

Since R2023b

• 

Libraries:
Simulink Support Package for Arduino Hardware / Sensors

Description

Add-On Required: This feature requires the Simulink Support Package for Arduino Hardware add-on.

The OV2640 Camera Sensor block captures images in the JPEG format using the ArduCam Mini 2MP Plus camera module with an OV2640 sensor. The camera is attached to an Arduino^® board. This block is a composite sensor block and uses both the SPI and I2C modules.

For a list of boards that support the OV2640 Camera Sensor block, see Supported Boards.

Note

You cannot add multiple OV2640 Camera Sensor blocks to a model.

Supported Boards

This list shows the supported board and the corresponding image resolutions.

Arduino Board	Supported resolutions
Arduino Mega 2560a	160x120, 176x144, 320x240
Arduino Mega ADK	160x120, 176x144, 320x240
Arduino Due	160x120, 176x144, 320x240
Arduino MKR1000	160x120, 176x144, 320x240, 352x288
Arduino MKR WiFi1010	160x120, 176x144, 320x240, 352x288
Arduino MKR Zero	160x120, 176x144, 320x240, 352x288
Arduino Nano 33 IoT	160x120, 176x144
Arduino Nano 33 BLE SENSE	160x120, 176x144
ESP32-WROOM ESP32-WROVER	160x120, 176x144, 320x240, 352x288, 640x480, 800x600, 1024x768, 1600x1200
a Arduino Mega 2560 board supports the 176x144 and 320x240 resolutions only while doing 'Build, Deploy and Start' in Simulink whereas not to 'Monitor and Tune'.

Note

To avoid memory overuse on the hardware, on the Hardware tab of the Simulink^® model, in the Prepare section, select Control Panel. In the new window that opens, click the Signal & Triggering button. In the second window, clear the Send multiple contiguous samples in same packet option in the Configuration section and click OK.

Examples

Capture Images Using ArduCam OV2640 Camera Module and ESP32 Hardware

Capture JPEG images using the ArduCam OV2640 camera module with ESP32 hardware.

• Open Model

Capture Images with Touch Sense Using ArduCam OV2640 Camera Module and Arduino Compatible ESP32 Hardware

Design a touch-based image capture system using an Arduino ESP32 hardware and ArduCam OV2640 camera module. The example uses the ESP32 Touch Sense block from the Simulink® Support Package for Arduino® Hardware.

• Open Model

Ports

Input

Capture trigger — Initiate image capture

0 | 1

Signal input to block that initiates image capture.

Data Types: uint8

Output

Data — Raw JPEG image data

vector

Raw JPEG image data with values ranging from 0—255. The size of the image depends on the JPEG encoding compression ratio and is less than the actual resolution.

Data Types: uint8

Data length — Size of data

scalar

Size of the raw JPEG image data.

Data Types: uint16

Status — Capture outcome status

scalar

The Status port outputs the status of the capture operation. Each value corresponds to a specific data output.

Scenario	Status Value	Data Output
Valid output	0	Valid raw image data
Size of actual image data exceeds the maximum image buffer size	1	0
Invalid output	2	0
Incorrect sensor initialization	3	0
Capture timeout	4	0

Data Types: uint8

Parameters

I2C module — I2C communication module

0 (default) | scalar

Specify the I2C module on the Arduino hardware to communicate with sensor peripherals. For more information on the Arduino pin mapping and modules that hardware boards support, see Pin Mapping for Arduino Timer-Independent Blocks.

I2C address — Peripheral address to communicate with camera sensor

0x30 (default) | scalar

The peripheral address of the OV2640 camera sensor to communicate with the Arduino hardware.

SPI module — SPI communication module

0 (default) | scalar

Specify the SPI module on the Arduino hardware to communicate with SPI peripherals. For more information on Arduino pin mapping and modules that hardware boards support, see Pin Mapping for Arduino Timer-Independent Blocks.

Chip select pin — Chip select pin of Arduino board

10 (default) | target hardware pin

To connect an ArduCam Mini 2MP Plus camera module with an OV2640 sensor to an Arduino board, enter the chip select pin of the Arduino board. For more information on chip select pins for Arduino boards, see Pin Mapping for Arduino Timer-Independent Blocks.

Product ID — Product ID of sensor

0x41 (default) | 0x42

Select the Product ID of the sensor.

Image Resolution — Image dimensions

160x120 (default) | 176x144 | 320x240 | 352x288 | 640x480 | 800x600 | 1024x768 | 1280x1024 | 1600x1200

Select the dimensions of the image that you want to capture in pixels.

For the list of image resolutions available for the supported boards, see Supported Boards.

Max image buffer size — Maximum size of image

3500 (default) | any nonnegative value

Enter the maximum size of the image in bytes. The image size must be supported by the hardware you are using for the chosen resolution.

Note

The max image buffer size must not be greater than the product of selected image resolution.

Capture timeout — Duration of Capture timeout

1 (default) | any nonnegative value

Specify capture timeout in seconds. Capture timeout allows the sensor block to capture image data at a rate dependent on this value. This parameter also ensures that capture operation times out once this duration has elapsed. During this duration, the camera is busy and cannot carry out any other action.

Note

To avoid overruns, set the capture timeout input to a value that is smaller than the sample time of the block that you select when determining the capture trigger input.

Version History

Introduced in R2023b