57 lines
1.5 KiB
Python
57 lines
1.5 KiB
Python
# SPDX-FileCopyrightText: Copyright (c) 2022 Jeff Epler for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""
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Use the built-in LCD as a viewfinder for the camera
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This example requires:
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* ESP32-S3-EYE development kit from Espressif
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To use:
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Copy the project bundle to CIRCUITPY.
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"""
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import struct
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import adafruit_ticks
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import board
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import displayio
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import espcamera
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import keypad
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button = keypad.Keys((board.BOOT,), value_when_pressed=False)
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cam = espcamera.Camera(
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data_pins=board.CAMERA_DATA,
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external_clock_pin=board.CAMERA_XCLK,
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pixel_clock_pin=board.CAMERA_PCLK,
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vsync_pin=board.CAMERA_VSYNC,
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href_pin=board.CAMERA_HREF,
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pixel_format=espcamera.PixelFormat.RGB565,
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frame_size=espcamera.FrameSize.R240X240,
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i2c=board.I2C(),
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external_clock_frequency=20_000_000,
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framebuffer_count=2,
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grab_mode=espcamera.GrabMode.WHEN_EMPTY)
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cam.vflip = True
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board.DISPLAY.auto_refresh = False
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display_bus = board.DISPLAY.bus
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display_bus.send(36, struct.pack(">hh", 0, 239))
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display_bus.send(42, struct.pack(">hh", 0, 239))
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display_bus.send(43, struct.pack(">hh", 0, 80+239))
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t0 = adafruit_ticks.ticks_ms()
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while True:
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if (event := button.events.get()) and event.pressed:
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cam.colorbar = not cam.colorbar
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frame = cam.take(1)
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if isinstance(frame, displayio.Bitmap):
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display_bus.send(44, frame)
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t1 = adafruit_ticks.ticks_ms()
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fps = 1000 / adafruit_ticks.ticks_diff(t1, t0)
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print(f"{fps:3.1f}fps") # typically runs at about 25fps
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t0 = t1
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