Serial USB VCP does not work on Windows

OpenMV Products
1

I want to use stream video from my OpenMV H7 Plus to my computer over USB. I’m able to successfully run the usb_vcp.py sample code with my Macbook Air to stream video. However, the same code does not work on my Windows computer, which is the computer I need for my application.

I’ve looked at past posts on the forum and I am aware of the dsrdrt being ignored on windows. However, even setting it manually does not do anything. For the script that runs on the computer, it gets stuck here:

while True:
start = time.time()
# Read data from the serial buffer
serial_port.write(“snap”.encode())
serial_port.flush()
size = struct.unpack(‘<L’, serial_port.read(4))[0] <----- STUCK HERE
buf = serial_port.read(size)

The Windows computer is unable to read anything from the serial port. Upon checking, it is always reading 0 bytes. However, opening the serial port from the IDE indicates that data is in fact being written. Please advise.

2

Can you check if you can read print statments?

Just run hello_world on the camera.

3

Yes, I can read print statements.

4

Bump, still unable to read image data over serial on windows

5

Print and vcp are the same interface… if one works the other should work.

What’s your OpenMV Cam code and how are you running it?