openmv/scripts/examples/50-Arduino-Boards/Portenta-H7/00-Board-Control/vsync_gpio_output.py

28 lines
1.0 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
#
# VSYNC GPIO output example.
#
# This example shows how to toggle a pin on VSYNC interrupt.
import sensor
import time
from pyb import Pin
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)
# This pin will be toggled on/off on VSYNC rising and falling edges.
led_pin = Pin("LED_BLUE", Pin.OUT_PP, Pin.PULL_NONE)
sensor.set_vsync_callback(lambda state, led=led_pin: led_pin.value(state))
clock = time.clock() # Create a clock object to track the FPS.
while True:
clock.tick() # Update the FPS clock.
img = sensor.snapshot() # Take a picture and return the image.
print(clock.fps()) # Note: OpenMV Cam runs about half as fast when connected
# to the IDE. The FPS should increase once disconnected.