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jeplerjepler
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Update camera demos
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  • OV5640_Breakout
    • CircuitPython_Kaluga-ascii-mirror
    • CircuitPython_Kaluga-lcd-mirror
    • CircuitPython_Pico-ascii-mirror
    • CircuitPython_Pico-lcd-mirror

‎OV5640_Breakout/CircuitPython_Kaluga-ascii-mirror/code.py‎

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# SPDX-FileCopyrightText: Copyright (c) 2021 Jeff Epler for Adafruit Industries
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#
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# SPDX-License-Identifier: Unlicense
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"""
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This demo is designed for the Kaluga development kit version 1.3.
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To fix the MemoryError when creating a Camera object, Place the line
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```toml
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CIRCUITPY_RESERVED_PSRAM=1048576
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```
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in the file **CIRCUITPY/settings.toml** and restart.
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"""
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import sys
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import board
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import keypad
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import displayio
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import espcamera
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import espidf
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# The demo runs very slowly if the LCD display is enabled!
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# It's intended to be viewed on the REPL on a host computer
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displayio.release_displays()
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if espidf.get_reserved_psram() < 1047586:
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print("""Place the following line in CIRCUITPY/settings.toml, then hard-reset the board:
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```
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CIRCUITPY_RESERVED_PSRAM
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```
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""")
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raise SystemExit
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print("Initializing camera")
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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.GRAYSCALE,
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frame_size=espcamera.FrameSize.QQVGA,
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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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print("initialized")
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k = keypad.Keys([board.IO0], value_when_pressed=False)
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chars = b" .:-=+*#%@"
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remap = [chars[i * (len(chars) - 1) // 255] for i in range(256)]
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width = cam.width
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row = bytearray(width//2)
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sys.stdout.write("\033[2J")
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while True:
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if (e := k.events.get()) is not None and e.pressed:
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cam.colorbar = not cam.colorbar
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frame = cam.take(1)
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for j in range(0, cam.height, 5):
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sys.stdout.write(f"\033[{j//5}H")
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for i in range(cam.width // 2):
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row[i] = remap[frame[width * j + 2 * i]]
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sys.stdout.write(row)
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sys.stdout.write("\033[K")
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sys.stdout.write("\033[J")

OV5640_Breakout/CircuitPython_Kaluga/code.py renamed to OV5640_Breakout/CircuitPython_Kaluga-lcd-mirror/code.py

File renamed without changes.

‎OV5640_Breakout/CircuitPython_Pico-ascii-mirror/code.py‎

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# SPDX-FileCopyrightText: Copyright (c) 2023 Limor Fried for Adafruit Industries
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#
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# SPDX-License-Identifier: Unlicense
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"""
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This demo is designed for the Raspberry Pi Pico.
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It shows the camera image as ASCII art on the USB REPL.
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"""
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import sys
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import time
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import busio
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import board
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import digitalio
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import adafruit_ov5640
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print("construct bus")
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bus = busio.I2C(board.GP9, board.GP8)
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print("construct camera")
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reset = digitalio.DigitalInOut(board.GP10)
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cam = adafruit_ov5640.OV5640(
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bus,
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data_pins=(
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board.GP12,
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board.GP13,
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board.GP14,
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board.GP15,
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board.GP16,
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board.GP17,
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board.GP18,
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board.GP19,
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),
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clock=board.GP11,
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vsync=board.GP7,
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href=board.GP21,
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mclk=board.GP20,
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shutdown=None,
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reset=reset,
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size=adafruit_ov5640.OV5640_SIZE_QQVGA,
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)
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print("print chip id")
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print(cam.chip_id)
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cam.colorspace = adafruit_ov5640.OV5640_COLOR_YUV
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cam.flip_y = True
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cam.flip_x = True
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cam.test_pattern = False
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buf = bytearray(cam.capture_buffer_size)
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chars = b" .':-+=*%$#"
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remap = [chars[i * (len(chars) - 1) // 255] for i in range(256)]
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width = cam.width
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row = bytearray(width)
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print("capturing")
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cam.capture(buf)
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print("capture complete")
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sys.stdout.write("\033[2J")
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while True:
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cam.capture(buf)
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for j in range(0, cam.height, 2):
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sys.stdout.write(f"\033[{j//2}H")
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for i in range(cam.width):
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row[i] = remap[buf[2 * (width * j + i)]]
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sys.stdout.write(row)
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sys.stdout.write("\033[K")
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sys.stdout.write("\033[J")
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time.sleep(0.1)

‎OV5640_Breakout/CircuitPython_Pico-lcd-mirror/code.py‎

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# SPDX-FileCopyrightText: Copyright (c) 2023 Limor Fried for Adafruit Industries
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#
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# SPDX-License-Identifier: Unlicense
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"""
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This demo is designed for the Raspberry Pi Pico. with 240x240 SPI TFT display
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It shows the camera image on the LCD
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"""
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import time
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import busio
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import board
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import digitalio
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import adafruit_ov5640
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import adafruit_st7789
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import displayio
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# Set up the display (You must customize this block for your display!)
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displayio.release_displays()
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spi = busio.SPI(clock=board.GP2, MOSI=board.GP3)
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display_bus = displayio.FourWire(spi, command=board.GP0, chip_select=board.GP1, reset=None)
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display = adafruit_st7789.ST7789(display_bus, width=240, height=240, rowstart=80, rotation=0)
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print("construct bus")
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bus = busio.I2C(board.GP9, board.GP8)
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print("construct camera")
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reset = digitalio.DigitalInOut(board.GP10)
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cam = adafruit_ov5640.OV5640(
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bus,
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data_pins=(
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board.GP12,
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board.GP13,
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board.GP14,
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board.GP15,
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board.GP16,
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board.GP17,
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board.GP18,
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board.GP19,
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),
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clock=board.GP11,
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vsync=board.GP7,
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href=board.GP21,
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mclk=board.GP20,
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shutdown=None,
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reset=reset,
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size=adafruit_ov5640.OV5640_SIZE_240X240,
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)
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print("print chip id")
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print(cam.chip_id)
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cam.colorspace = adafruit_ov5640.OV5640_COLOR_RGB
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cam.flip_y = False
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cam.flip_x = False
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cam.test_pattern = False
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width = display.width
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height = display.height
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#cam.test_pattern = OV7670_TEST_PATTERN_COLOR_BAR_FADE
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bitmap = displayio.Bitmap(cam.width, cam.height, 65535)
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print(width, height, cam.width, cam.height)
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if bitmap is None:
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raise SystemExit("Could not allocate a bitmap")
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g = displayio.Group(scale=1, x=(width-cam.width)//2, y=(height-cam.height)//2)
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tg = displayio.TileGrid(bitmap,
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pixel_shader=displayio.ColorConverter(input_colorspace=displayio.Colorspace.RGB565_SWAPPED)
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)
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g.append(tg)
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display.show(g)
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t0 = time.monotonic_ns()
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display.auto_refresh = False
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while True:
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cam.capture(bitmap)
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bitmap.dirty()
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display.refresh(minimum_frames_per_second=0)
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t1 = time.monotonic_ns()
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print("fps", 1e9 / (t1 - t0))
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t0 = t1

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