imagecapture – Support for “Parallel capture” interfaces

See also

Espressif microcontrollers use the espcamera module together.

Available on these boards

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class imagecapture.ParallelImageCapture(*, data_pins: List[microcontroller.Pin], clock: microcontroller.Pin, vsync: microcontroller.Pin | None, href: microcontroller.Pin | None)

Capture image frames from a camera with parallel data interface

Create a parallel image capture object

This object is usually used with a camera-specific wrapper library such as adafruit_ov5640.

Parameters:

• data_pins (List[microcontroller.Pin]) – The data pins.

• clock (microcontroller.Pin) – The pixel clock input.

• vsync (microcontroller.Pin) – The vertical sync input, which has a negative-going pulse at the beginning of each frame.

• href (microcontroller.Pin) – The horizontal reference input, which is high whenever the camera is transmitting valid pixel information.

capture(buffer: circuitpython_typing.WriteableBuffer) → circuitpython_typing.WriteableBuffer

Capture a single frame into the given buffer.

This will stop a continuous-mode capture, if one is in progress.

continuous_capture_start(buffer1: circuitpython_typing.WriteableBuffer, buffer2: circuitpython_typing.WriteableBuffer, /) → None

Begin capturing into the given buffers in the background.

Call continuous_capture_get_frame to get the next available frame, and continuous_capture_stop to stop capturing.

Until continuous_capture_stop (or deinit) is called, the ParallelImageCapture object keeps references to buffer1 and buffer2, so the objects will not be garbage collected.

continuous_capture_get_frame() → circuitpython_typing.WriteableBuffer

Return the next available frame, one of the two buffers passed to continuous_capture_start

continuous_capture_stop() → None

Stop continuous capture.

Calling this method also causes the object to release its references to the buffers passed to continuous_capture_start, potentially allowing the objects to be garbage collected.

deinit() → None

Deinitialize this instance

__enter__() → ParallelImageCapture

No-op used in Context Managers.

__exit__() → None

Automatically deinitializes the hardware on context exit. See Lifetime and ContextManagers for more info.