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Merge pull request #2416 from adafruit/ov5640-more-demos
Ov5640 more demos
2 parents e0a0722 + f450e77 commit f8bbe61

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5 files changed

+366
-3
lines changed
  • OV5640_Breakout
    • CircuitPython_Kaluga-ascii-mirror
    • CircuitPython_Kaluga-jpeg
    • CircuitPython_Kaluga-lcd-mirror
    • CircuitPython_Pico-ascii-mirror
    • CircuitPython_Pico-lcd-mirror

5 files changed

+366
-3
lines changed

‎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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CIRCUITPY_RESERVED_PSRAM=1048576
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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-jpeg/code.py

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# SPDX-FileCopyrightText: Copyright (c) 2023 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 with the
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ILI9341 display. It requires CircuitPython 8.
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This demo needs reserved psram properly configured in settings.toml:
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CIRCUITPY_RESERVED_PSRAM=1048576
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This example also requires an SD card breakout wired as follows:
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* IO18: SD Clock Input
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* IO17: SD Serial Output (MISO)
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* IO14: SD Serial Input (MOSI)
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* IO12: SD Chip Select
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Insert a CircuitPython-compatible SD card before powering on the Kaluga.
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Press the "BOOT" button to take a photo in BMP format.
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"""
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import os
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import struct
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import board
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import busio
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import displayio
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import espcamera
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import espidf
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import keypad
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import sdcardio
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import storage
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print("Initializing display")
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displayio.release_displays()
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spi = busio.SPI(MOSI=board.LCD_MOSI, clock=board.LCD_CLK)
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display_bus = displayio.FourWire(
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spi,
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command=board.LCD_D_C,
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chip_select=board.LCD_CS,
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reset=board.LCD_RST,
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baudrate=80_000_000,
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)
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_INIT_SEQUENCE = (
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b"\x01\x80\x80" # Software reset then delay 0x80 (128ms)
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b"\xEF\x03\x03\x80\x02"
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b"\xCF\x03\x00\xC1\x30"
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b"\xED\x04\x64\x03\x12\x81"
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b"\xE8\x03\x85\x00\x78"
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b"\xCB\x05\x39\x2C\x00\x34\x02"
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b"\xF7\x01\x20"
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b"\xEA\x02\x00\x00"
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b"\xc0\x01\x23" # Power control VRH[5:0]
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b"\xc1\x01\x10" # Power control SAP[2:0];BT[3:0]
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b"\xc5\x02\x3e\x28" # VCM control
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b"\xc7\x01\x86" # VCM control2
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b"\x36\x01\x40" # Memory Access Control
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b"\x37\x01\x00" # Vertical scroll zero
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b"\x3a\x01\x55" # COLMOD: Pixel Format Set
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b"\xb1\x02\x00\x18" # Frame Rate Control (In Normal Mode/Full Colors)
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b"\xb6\x03\x08\x82\x27" # Display Function Control
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b"\xF2\x01\x00" # 3Gamma Function Disable
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b"\x26\x01\x01" # Gamma curve selected
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b"\xe0\x0f\x0F\x31\x2B\x0C\x0E\x08\x4E\xF1\x37\x07\x10\x03\x0E\x09\x00" # Set Gamma
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b"\xe1\x0f\x00\x0E\x14\x03\x11\x07\x31\xC1\x48\x08\x0F\x0C\x31\x36\x0F" # Set Gamma
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b"\x11\x80\x78" # Exit Sleep then delay 0x78 (120ms)
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b"\x29\x80\x78" # Display on then delay 0x78 (120ms)
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)
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display = displayio.Display(display_bus, _INIT_SEQUENCE, width=320, height=240)
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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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CIRCUITPY_RESERVED_PSRAM=1048576
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""")
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raise SystemExit
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print("Initializing SD card")
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sd_spi = busio.SPI(clock=board.IO18, MOSI=board.IO14, MISO=board.IO17)
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sd_cs = board.IO12
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sdcard = sdcardio.SDCard(sd_spi, sd_cs)
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vfs = storage.VfsFat(sdcard)
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storage.mount(vfs, "/sd")
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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.RGB565,
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frame_size=espcamera.FrameSize.QVGA,
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i2c=board.I2C(),
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external_clock_frequency=20_000_000,
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framebuffer_count=1)
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print("initialized")
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display.auto_refresh = False
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def exists(filename):
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try:
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os.stat(filename)
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return True
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except OSError:
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return False
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_image_counter = 0
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def open_next_image(extension="jpg"):
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global _image_counter # pylint: disable=global-statement
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while True:
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filename = f"/sd/img{_image_counter:04d}.{extension}"
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_image_counter += 1
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if exists(filename):
117+
continue
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print("#", filename)
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return open(filename, "wb")
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ow = (display.width - cam.width) // 2
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oh = (display.height - cam.height) // 2
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k = keypad.Keys([board.IO0], value_when_pressed=False)
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while True:
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frame = cam.take(1)
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display_bus.send(42, struct.pack(">hh", ow, cam.width + ow - 1))
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display_bus.send(43, struct.pack(">hh", oh, cam.height + ow - 1))
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display_bus.send(44, frame)
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if (e := k.events.get()) is not None and e.pressed:
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cam.reconfigure(
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pixel_format=espcamera.PixelFormat.JPEG,
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frame_size=espcamera.FrameSize.SVGA,
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)
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frame = cam.take(1)
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if isinstance(frame, memoryview):
138+
jpeg = frame
139+
print(f"Captured {len(jpeg)} bytes of jpeg data")
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with open_next_image() as f:
142+
f.write(jpeg)
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cam.reconfigure(
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pixel_format=espcamera.PixelFormat.RGB565,
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frame_size=espcamera.FrameSize.QVGA,
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)

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

Lines changed: 1 addition & 3 deletions
Original file line numberDiff line numberDiff line change
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if espidf.get_reserved_psram() < 1047586:
6464
print("""Place the following line in CIRCUITPY/settings.toml, then hard-reset the board:
65-
```
66-
CIRCUITPY_RESERVED_PSRAM
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```
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CIRCUITPY_RESERVED_PSRAM=1048576
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""")
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raise SystemExit
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‎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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18+
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,
41+
)
42+
print("print chip id")
43+
print(cam.chip_id)
44+
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46+
cam.colorspace = adafruit_ov5640.OV5640_COLOR_YUV
47+
cam.flip_y = True
48+
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")
59+
cam.capture(buf)
60+
print("capture complete")
61+
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sys.stdout.write("\033[2J")
63+
while True:
64+
cam.capture(buf)
65+
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):
68+
row[i] = remap[buf[2 * (width * j + i)]]
69+
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
6+
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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")
24+
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(
28+
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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),
39+
clock=board.GP11,
40+
vsync=board.GP7,
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href=board.GP21,
42+
mclk=board.GP20,
43+
shutdown=None,
44+
reset=reset,
45+
size=adafruit_ov5640.OV5640_SIZE_240X240,
46+
)
47+
print("print chip id")
48+
print(cam.chip_id)
49+
50+
cam.colorspace = adafruit_ov5640.OV5640_COLOR_RGB
51+
cam.flip_y = False
52+
cam.flip_x = False
53+
cam.test_pattern = False
54+
55+
width = display.width
56+
height = display.height
57+
58+
#cam.test_pattern = OV7670_TEST_PATTERN_COLOR_BAR_FADE
59+
bitmap = displayio.Bitmap(cam.width, cam.height, 65535)
60+
print(width, height, cam.width, cam.height)
61+
if bitmap is None:
62+
raise SystemExit("Could not allocate a bitmap")
63+
64+
g = displayio.Group(scale=1, x=(width-cam.width)//2, y=(height-cam.height)//2)
65+
tg = displayio.TileGrid(bitmap,
66+
pixel_shader=displayio.ColorConverter(input_colorspace=displayio.Colorspace.RGB565_SWAPPED)
67+
)
68+
g.append(tg)
69+
display.show(g)
70+
71+
t0 = time.monotonic_ns()
72+
display.auto_refresh = False
73+
while True:
74+
cam.capture(bitmap)
75+
bitmap.dirty()
76+
display.refresh(minimum_frames_per_second=0)
77+
t1 = time.monotonic_ns()
78+
print("fps", 1e9 / (t1 - t0))
79+
t0 = t1

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