#!/usr/bin/env python2 # This file is part of the OpenMV project. # # Copyright (c) 2013-2021 Ibrahim Abdelkader # Copyright (c) 2013-2021 Kwabena W. Agyeman # # This work is licensed under the MIT license, see the file LICENSE for details. # # An example script using pyopenmv to grab the framebuffer. import sys import numpy as np import pygame import pyopenmv from time import sleep script = """ import sensor, image, time sensor.reset() # Reset and initialize the sensor. sensor.set_pixformat(sensor.RGB565) # Set pixel format to RGB565 (or GRAYSCALE) sensor.set_framesize(sensor.VGA) # Set frame size to QVGA (320x240) img = sensor.snapshot() # Take a picture and return the image. img.compress() while(True): img.flush() """ # init pygame pygame.init() if len(sys.argv)!= 2: print ('usage: pyopenmv_fb.py ') sys.exit(1) connected = False portname = sys.argv[1] pyopenmv.disconnect() for i in range(10): try: # opens CDC port. # Set small timeout when connecting pyopenmv.init(portname, baudrate=921600, timeout=0.050) connected = True break except Exception as e: connected = False sleep(0.100) if not connected: print("Failed to connect to OpenMV's serial port.\n" "Please install OpenMV's udev rules first:\n" "sudo cp openmv/udev/50-openmv.rules /etc/udev/rules.d/\n" "sudo udevadm control --reload-rules\n\n") sys.exit(1) # Set higher timeout after connecting for lengthy transfers. pyopenmv.set_timeout(1*2) # SD Cards can cause big hicups. pyopenmv.enable_fb(True) pyopenmv.exec_script(script) # init screen running = True screen = None clock = pygame.time.Clock() fps_clock = pygame.time.Clock() font = pygame.font.SysFont("monospace", 50) fb_size = 0 try: while running: data = None # Read state w, h, data, size, text = pyopenmv.read_state() if text is not None: print(text, end="") if data is not None: fps = fps_clock.get_fps() fps_clock.tick(500) if screen is None: screen = pygame.display.set_mode((640, 120), pygame.DOUBLEBUF, 32) screen.fill((0, 0, 0)) screen.blit(font.render("FPS %.2f %.2f MB/s"%(fps, fps * size / 1024**2), 1, (255, 0, 0)), (0, 30)) # update display pygame.display.flip() for event in pygame.event.get(): if event.type == pygame.QUIT: running = False elif event.type == pygame.KEYDOWN: if event.key == pygame.K_ESCAPE: running = False clock.tick(500) except KeyboardInterrupt: pass pygame.quit() pyopenmv.stop_script()