ODrive and OS X

Support
1

I was able to build and flash the firmware. The odrive rotated the motors on the startup sequence.
I can see the USB device in: as /dev/tty.usbmodem1411
When I built the firmware I selected #define USB_PROTOCOL_NATIVE_STREAM_BASED as per instruction.
When I try to run demo.py I get the following:

python3.6 demo.py
looking for ODrive…
Found ODrive via PyUSB
ConfigurationValue 1
InterfaceNumber 0,0
EndpointAddress 130
InterfaceNumber 1,1
EndpointAddress 1
EndpointAddress 129

EndpointAddress for writing 1

EndpointAddress for reading 129

Connecting to device on USB device bus 20 device 22
Traceback (most recent call last):
…
… (Thinks code is links and wont let me post.)
usb.core.USBError: [Errno 60] Operation timed out

Any ideas?

Thanks,

Matthew

2

I got it to work!

I used #define USB_PROTOCOL_NATIVE

Did a make clean
and make

Must do a make clean first.

Then a make flash.

And it works on OS X

:slight_smile:

3

What version of MacOS are you using? And what computer? I have not had any luck with this so far.

4

This is the output I get, with #define USB_PROTOCOL_NATIVE and the default settings in demo.py

looking for ODrive…
no device found
no device found
no device found

5

Python 3.6.4

MacOS High Sierra
Version 10.13.2 (17C88)

MacBook Pro (Retina, 15-inch, Late 2013)

If you do a:
ls /dev

Do you see the usb modem in there?

6

Yes I see it in /dev

I’m running 10.12 not 10.13, so that could make a difference I suppose. I think I’m running almost the exact same laptop though.

I’ve been cataloging the issue here: https://github.com/madcowswe/ODrive/issues/97

But since this works for you, I think its less likely that it is a driver issue. I think its more likely a difference with how pyusb and libusb are installed.

7

Line 11 in demo.py is exactly like this right?
my_drive = odrive.core.find_any(consider_usb=True, consider_serial=False, printer=print)

8

That is the line I have.

It stopped working for me. But my error was different. I got it to work again by:

sudo port uninstall libusb
sudo pip uninstall pyusb
sudo port install libusb
sudo pip install pyusb

I am using macports to select current python version:

sudo port select --set python python36

2 Likes
9

I have tried every combination of things related to this. Uninstalling and reinstalling. Trying with brew instead. Trying with macports. Trying a combination for different parts. Incredibly frustrating :stuck_out_tongue:

If I uninstall pyusb, I obviously get an error that there’s no package named usb. If I leave pyusb installed and uninstall libusb then I get an error from pyusb that there’s no backend. The weird part is that if I uninstall libusb with brew, but install it with macports, pyusb still can’t find it so I get the no backend error.