i find a webpageOpenMV串口发送图片
in that page ,it has some code for send image by uart.write()
OpenMV串口发送图片 # Hello World Example # # Welcome to the OpenMV IDE! Click on the green run arrow button below to run the script! import sensor, image, time from pyb import UART uart = UART(3) uart.init(115200, timeout_char=1000) sensor.reset() # Reset and initialize the sensor. sensor.set_pixformat(sensor.RGB565) # 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. 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. uart.write(img.compressed(quality=50)) # Note: OpenMV Cam runs about half as fast when connected # to the IDE. The FPS should increase once disconnected.
i have no idea if it will work ,i check the help:
write (buf )
Write the buffer of bytes to the bus. If characters are 7 or 8 bits wide then each byte is one character. If characters are 9 bits wide then two bytes are used for each character (little endian), and
buf must contain an even number of bytes.
Return value: number of bytes written. If a timeout occurs and no bytes were written returns
can usart send image by uart.write()?