Hi everyone,

We just received some ANT USB2 sticks.

I've posted an example of using the ANT USB2 stick under Linux here:

opensource.quarq.us/ant_usb2_stick

The code should be cross-platform to Windows and OS X, at least when pyUSB's known bug on OS X is fixed.

Is the Garmin USB ANT Stick simply a USB2 Stick-OEM with a Garmin logo? Is the Garmin stick limited to use with Garmin products?

Hi Mark,

Question about the python scripts you wrote.

Have installed them on OSX, you said that there is a problem. what is that?
Also the quarqd_config file, what should that look like?

If I run the ap2.py script, i get numbers back (sometimes), the ap2s, returns with errors.
See below.

Traceback (most recent call last):
File "ap2s.py", line 40, in <module>
print " ".join(("%02x"%x for x in ep_in.read(64)))
File "/Library/Python/2.6/site-packages/usb/core.py", line 273, in read
return self.device.read(self.bEndpointAddress, size, self.interface, timeout)
File "/Library/Python/2.6/site-packages/usb/core.py", line 624, in read
self.__get_timeout(timeout)
File "/Library/Python/2.6/site-packages/usb/_debug.py", line 53, in do_trace
return f(*args, **named_args)
File "/Library/Python/2.6/site-packages/usb/backend/libusb10.py", line 483, in bulk_read
timeout)
File "/Library/Python/2.6/site-packages/usb/backend/libusb10.py", line 581, in __read
timeout))
File "/Library/Python/2.6/site-packages/usb/backend/libusb10.py", line 353, in _check
raise USBError(_str_error[retval.value])
usb.core.USBError: Operation timed out


Erik

Hi,

thanks for your examples!

I'm writing a program in C using libusb1 to access ANT USB2 sticks.
I managed to write the link layer messages to the device and get messages for a successful configuration back.
If i try to receive messages sent from a second device, the thread with libusb_bulk_read does not return any data.

How can i read the transmitted messages from the USB2 stick?

Many thanks in advance!

Hi Mark,

I am facing some error in "ap2.py" & "ap2s.py". I have updated my system environment as per required like libusb 1.0 ,pyusb 1.0 and python 2.6.6

but getting the below error.

Error:
File "ap2.py", line 21, in <module> dev.get_interface_altsetting(), # first interface
AttributeError: 'Device' object has no attribute 'get_interface_altsetting

In forums, somewhere I read that "get_interface_altsetting()" is deprecated ,if it so then please suggest what are the others methods that I can use in place of it "get_interface_altsetting()".

Please let me know how to fix this issues.

try this:

permalink.gmane.org/gmane.comp.python.pyusb.user/657