mirror of
https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
43 lines
1.4 KiB
Python
43 lines
1.4 KiB
Python
# This work is licensed under the MIT license.
|
|
# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
|
|
# https://github.com/openmv/openmv/blob/master/LICENSE
|
|
#
|
|
# USB VCP example.
|
|
# This example shows how to use the USB VCP class to send an image to PC on demand.
|
|
#
|
|
# WARNING:
|
|
# This script should NOT be run from the IDE or command line, it should be saved as main.py
|
|
# Note the following commented script shows how to receive the image from the host side.
|
|
#
|
|
# #!/usr/bin/env python2.7
|
|
# import sys, serial, struct
|
|
# port = '/dev/ttyACM0'
|
|
# sp = serial.Serial(port, baudrate=115200, bytesize=serial.EIGHTBITS, parity=serial.PARITY_NONE,
|
|
# xonxoff=False, rtscts=False, stopbits=serial.STOPBITS_ONE, timeout=None, dsrdtr=True)
|
|
# sp.setDTR(True) # dsrdtr is ignored on Windows.
|
|
# sp.write("snap")
|
|
# sp.flush()
|
|
# size = struct.unpack('<L', sp.read(4))[0]
|
|
# img = sp.read(size)
|
|
# sp.close()
|
|
#
|
|
# with open("img.jpg", "w") as f:
|
|
# f.write(img)
|
|
|
|
import sensor
|
|
import ustruct
|
|
from pyb import USB_VCP
|
|
|
|
usb = USB_VCP()
|
|
sensor.reset() # Reset and initialize the sensor.
|
|
sensor.set_pixformat(sensor.GRAYSCALE) # Set pixel format to RGB565 (or GRAYSCALE)
|
|
sensor.set_framesize(sensor.QVGA) # Set frame size to QVGA (320x240)
|
|
sensor.skip_frames(time=2000) # Wait for settings take effect.
|
|
|
|
while True:
|
|
cmd = usb.recv(4, timeout=5000)
|
|
if cmd == b"snap":
|
|
img = sensor.snapshot().compress()
|
|
usb.send(ustruct.pack("<L", img.size()))
|
|
usb.send(img)
|