CamPreview - Camera Preview

Class feature: Camera previewing.

Note: Please initialize the LCD before using this feature.

Example:

from machine import LCD
import camera

# Initialize the LCD object based on the contents of the machine.LCD class
# lcd = LCD()
# lcd.lcd_init(*args)

# Create a camPreview object
preview = camera.camPreview(0,640,480,240,240,1)

# Enable camera preview feature
preview.open()

# Disable camera preview feature
preview.close()

Constructor

camera.camPreview

class camera.camPreview(model,cam_w,cam_h,lcd_w,lcd_h,perview_level)

Creates a camPreview object.

Parameter:

• model - Integer type. Camera model. Click here for corresponding camera model.
• cam_w - Integer type. Camera horizontal resolution. Please fill in according to the specifications of the corresponding camera model.
• cam_h - Integer type. Camera vertical resolution. Please fill in according to the specifications of the corresponding camera model.
• lcd_w - Integer type. LCD horizontal resolution. Please fill in according to the specifications of the LCD actually used.
• lcd_h - Integer type. LCD vertical resolution. Please fill in according to the specifications of the LCD actually used.
• perview_level - Integer type. Preview level. Fill with 1 or 2 on EC600N series, EC800N series, EC600M series and EC800M series modules. The higher the level, the smoother the image, and the more resources consumed. Fill with 1 on other modules.

Corresponding Camera Model:

Method

camPreview.open

camPreview.open()

This method enables the camera preview feature.

Parameter：

None

Return Value：

0 - Successful execution; Other values - Failed execution.

camPreview.close

camPreview.close()

This method disables the camera preview feature.

Parameter：

None

Return Value：

0 - Successful execution; Other values - Failed execution.