ERROR_SEM_TIMEOUT error always and for anything

[sebastianzander]

I am running Windows 10 with the latest Ruby version, in fact I just installed Ruby the first time and all dependencies should be up-to-date as well. I run your polar tool from an elevated PowerShell terminal, but no matter whether I request DIR or SYNC I always get such errors:

$ ruby .\polar_ftp --dev=//./COM3 DIR / results in:

Connected to ? serial ?
Synchronizing to 'C:/Users/live/Polar/unknown_serial'
Listing content of '/'
C:/Users/live/.local/share/gem/ruby/3.2.0/gems/rubyserial-0.6.0/lib/rubyserial/windows.rb:73:in `write': ERROR_SEM_TIMEOUT (RubySerial::Error)
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:49:in `request'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:33:in `dir'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:71:in `recurse'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:129:in `sync'
        from ./polar_ftp:64:in `<main>'

I hardcoded the local sync directory since for some reason on my machine the device and serial are resolved as ? and Windows could, of course, not create a directory with a question mark.

I was only twice able to get the directory listings for / and /U/. I then wanted to list /U/0/ and since then I only received these semaphore function timeouts (ERROR_SEM_TIMEOUT). Any idea?

By the way: My ultimate goal was to extract more detailed GPS data from the watch, e.g. information about the precision of each recorded position. Not sure, however, whether Polar watches even record and/or store this information. Does anybody know this?

[cmaion]

Hi

Looks like an issue specific to Windows.
I just switched the serial port library used to another one (2f0d717). Pull and let me know if it works better for you!

As for precision of the GPS coordinates: the number of satellites used is recorded for each data point. Also time of first fix. See polar_training2test and dig into the protobuf/ files.

[sebastianzander]

Hi, thanks for that quick push to master. Unfortunately, serialport also does not work. It just sits there at Listing content of '/' for hours. I can't even stop the process with Ctrl+C. If I disconnect the watch I get

D:/Development/Ruby/polar/lib/polar_usb_acm.rb:68:in `read': Permission denied (Errno::EACCES)
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:68:in `read'
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:51:in `request'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:33:in `dir'
        from polar_ftp:41:in `<main>'

I also once got

D:/Development/Ruby/polar/lib/polar_usb_acm.rb:68:in `read': Interrupt
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:68:in `read'
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:51:in `request'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:33:in `dir'
        from polar_ftp:41:in `<main>'

Is it possible to access the watch via Windows Subsystem for Linux? Out of the box it doesn't seems so; I cannot find /dev/ttyACM0 at least.

[cmaion]

Hi

Just pushed a new commit, give it a try.

[sebastianzander]

Hey, only a little better. I can list some directories now, but I believe, the bigger the contents of the directory, the more unlikely it becomes that I can list its contents. But even if I could list the contents of e.g. /U/0 in order to get my training sessions, downloading bigger files would probably be the next hurdle. I tried GET /SYSCONF.BPB (6 bytes? big), but then I get this error:

Connected to ? serial ?
Downloading '/SYSCONF.BPB' as 'SYSCONF.BPB'
D:/Development/Ruby/polar/lib/polar_usb_acm.rb:50:in `write': Invalid argument (Errno::EINVAL)
        from D:/Development/Ruby/polar/lib/polar_usb_acm.rb:50:in `request'
        from D:/Development/Ruby/polar/lib/polar_ftp.rb:56:in `get'
        from polar_ftp:61:in `<main>'

I found a tutorial from Microsoft about how to Connect USB devices to Windows Subsystem for Linux. I will give it a try in the coming days.

[sebastianzander]

Using usbipd-win under Windows and linux-tools-generic and hwdata under Ubuntu (Windows Subsystem for Linux) I am now able to list directory contents and download files easily. Also everything is way faster; at least the directory listing which I am able to compare to running it under Windows directly.

However, I had to revert your last two commits. I guess you are better off with rubyserial after all.

[cmaion]

ok good to know.
I have pushed another commit that you may want to try too, both on Windows directly & WSL (force serial flow control to HARD -- if it doesn't work on Windows, you might try NONE to disable)