Simple test¶
Ensure your device works with this simple test.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | """VC0706 image capture to local storage.
You must wire up the VC0706 to a USB or hardware serial port.
Primarily for use with Linux/Raspberry Pi but also can work with Mac/Windows"""
import time
import busio
import board
import adafruit_vc0706
# Set this to the full path to the file name to save the captured image. WILL OVERWRITE!
# CircuitPython internal filesystem configuration:
IMAGE_FILE = '/image.jpg'
# USB to serial adapter configuration:
# IMAGE_FILE = 'image.jpg' # Full path to file name to save captured image. Will overwrite!
# Raspberry Pi configuration:
# IMAGE_FILE = '/home/pi/image.jpg' # Full path to file name to save image. Will overwrite!
# Create a serial connection for the VC0706 connection.
uart = busio.UART(board.TX, board.RX, baudrate=115200, timeout=0.25)
# Update the serial port name to match the serial connection for the camera!
# For use with USB to serial adapter:
# import serial
# uart = serial.Serial("/dev/ttyUSB0", baudrate=115200, timeout=0.25)
# For use with Raspberry Pi:
# import serial
# uart = serial.Serial("/dev/ttyS0", baudrate=115200, timeout=0.25)
# Setup VC0706 camera
vc0706 = adafruit_vc0706.VC0706(uart)
# Print the version string from the camera.
print('VC0706 version:')
print(vc0706.version)
# Set the image size.
vc0706.image_size = adafruit_vc0706.IMAGE_SIZE_640x480
# Or set IMAGE_SIZE_320x240 or IMAGE_SIZE_160x120
# Note you can also read the property and compare against those values to
# see the current size:
size = vc0706.image_size
if size == adafruit_vc0706.IMAGE_SIZE_640x480:
print('Using 640x480 size image.')
elif size == adafruit_vc0706.IMAGE_SIZE_320x240:
print('Using 320x240 size image.')
elif size == adafruit_vc0706.IMAGE_SIZE_160x120:
print('Using 160x120 size image.')
# Take a picture.
print('Taking a picture in 3 seconds...')
time.sleep(3)
print('SNAP!')
if not vc0706.take_picture():
raise RuntimeError('Failed to take picture!')
# Print size of picture in bytes.
frame_length = vc0706.frame_length
print('Picture size (bytes): {}'.format(frame_length))
# Open a file for writing (overwriting it if necessary).
# This will write 50 bytes at a time using a small buffer.
# You MUST keep the buffer size under 100!
print('Writing image: {}'.format(IMAGE_FILE), end='', flush=True)
stamp = time.monotonic()
with open(IMAGE_FILE, 'wb') as outfile:
wcount = 0
while frame_length > 0:
t = time.monotonic()
# Compute how much data is left to read as the lesser of remaining bytes
# or the copy buffer size (32 bytes at a time). Buffer size MUST be
# a multiple of 4 and under 100. Stick with 32!
to_read = min(frame_length, 32)
copy_buffer = bytearray(to_read)
# Read picture data into the copy buffer.
if vc0706.read_picture_into(copy_buffer) == 0:
raise RuntimeError('Failed to read picture frame data!')
# Write the data to SD card file and decrement remaining bytes.
outfile.write(copy_buffer)
frame_length -= 32
# Print a dot every 2k bytes to show progress.
wcount += 1
if wcount >= 64:
print('.', end='', flush=True)
wcount = 0
print()
print('Finished in %0.1f seconds!' % (time.monotonic() - stamp))
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | """VC0706 image capture to SD card demo.
You must wire up the VC0706 to the board's serial port, and a SD card holder
to the board's SPI bus. Use the Feather M0 Adalogger as it includes a SD
card holder pre-wired to the board--this sketch is setup to use the Adalogger!
In addition you MUST also install the following dependent SD card library:
https://github.com/adafruit/Adafruit_CircuitPython_SD
See the guide here for more details on using SD cards with CircuitPython:
https://learn.adafruit.com/micropython-hardware-sd-cards"""
import time
import board
import busio
import digitalio
import storage
import adafruit_sdcard
import adafruit_vc0706
# Configuration:
SD_CS_PIN = board.D10 # CS for SD card (SD_CS is for Feather Adalogger)
IMAGE_FILE = '/sd/image.jpg' # Full path to file name to save captured image.
# Will overwrite!
# Setup SPI bus (hardware SPI).
spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
# Setup SD card and mount it in the filesystem.
sd_cs = digitalio.DigitalInOut(SD_CS_PIN)
sdcard = adafruit_sdcard.SDCard(spi, sd_cs)
vfs = storage.VfsFat(sdcard)
storage.mount(vfs, '/sd')
# Create a serial connection for the VC0706 connection, speed is auto-detected.
uart = busio.UART(board.TX, board.RX, timeout=250)
# Setup VC0706 camera
vc0706 = adafruit_vc0706.VC0706(uart)
# Print the version string from the camera.
print('VC0706 version:')
print(vc0706.version)
# Set the baud rate to 115200 for fastest transfer (its the max speed)
vc0706.baudrate = 115200
# Set the image size.
vc0706.image_size = adafruit_vc0706.IMAGE_SIZE_640x480 # Or set IMAGE_SIZE_320x240 or
# IMAGE_SIZE_160x120
# Note you can also read the property and compare against those values to
# see the current size:
size = vc0706.image_size
if size == adafruit_vc0706.IMAGE_SIZE_640x480:
print('Using 640x480 size image.')
elif size == adafruit_vc0706.IMAGE_SIZE_320x240:
print('Using 320x240 size image.')
elif size == adafruit_vc0706.IMAGE_SIZE_160x120:
print('Using 160x120 size image.')
# Take a picture.
print('Taking a picture in 3 seconds...')
time.sleep(3)
print('SNAP!')
if not vc0706.take_picture():
raise RuntimeError('Failed to take picture!')
# Print size of picture in bytes.
frame_length = vc0706.frame_length
print('Picture size (bytes): {}'.format(frame_length))
# Open a file for writing (overwriting it if necessary).
# This will write 50 bytes at a time using a small buffer.
# You MUST keep the buffer size under 100!
print('Writing image: {}'.format(IMAGE_FILE), end='')
with open(IMAGE_FILE, 'wb') as outfile:
wcount = 0
while frame_length > 0:
# Compute how much data is left to read as the lesser of remaining bytes
# or the copy buffer size (32 bytes at a time). Buffer size MUST be
# a multiple of 4 and under 100. Stick with 32!
to_read = min(frame_length, 32)
copy_buffer = bytearray(to_read)
# Read picture data into the copy buffer.
if vc0706.read_picture_into(copy_buffer) == 0:
raise RuntimeError('Failed to read picture frame data!')
# Write the data to SD card file and decrement remaining bytes.
outfile.write(copy_buffer)
frame_length -= 32
# Print a dot every 2k bytes to show progress.
wcount += 1
if wcount >= 64:
print('.', end='')
wcount = 0
print()
print('Finished!')
|