Comments (8)
ppannuto
commented on July 18, 2024
Hmm, I haven't seen anything like that happen before. It certainly doesn't sound like anything that is supposed to happen.
Are you only calling capture_start or are you doing something to check when the capture is complete? Could you reduce to some minimum working example that exhibits the bug?
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flagline
commented on July 18, 2024
Here's a test program and output that illustrate what I'm seeing.
SaleaeTest .py.txt
output.txt
In the output you can see that a 'List index out of range' exception occurs on subsequent first calls to get analyzers. This is because _recv is returning 'TRUE' in response to the 'GET_ANAYLZERS' _cmd call (instead of the expected list of analyzers).
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ppannuto
commented on July 18, 2024
Interesting.. it's quite surprising to see any F in the Export list. I believe that wait should be using is_analyzer_complete. Though that still does not explain how things get out of sync. Perhaps the issue stems from not waiting for the first export analyzer to finish before triggering the next?
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flagline
commented on July 18, 2024
I tried setting a breakpoint in _recv (line 242 of saleae.py) so that I could step slowly and allow plenty of time between commands. It also allows me to see the _rxbuf contents after each command. But even stepping through the commands slowly, it's behaving oddly. For example, the calls to is_processing_complete() following start_capture() return 'NAK' the first time, 'ACK' the second time, and 'TRUE/nACK' after that. The reply on the second call looks incorrect to me.
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ppannuto
commented on July 18, 2024
Hmm.., from that description it sounds like it may be an upstream issue?
Those inconsistent replies from the Logic software would certainly confuse
processing on this end..
…On Tue, Feb 25, 2020 at 1:21 PM flagline ***@***.***> wrote:
I tried setting a breakpoint in _recv (line 242 of saleae.py) so that I
could step slowly and allow plenty of time between commands. It also allows
me to see the _rxbuf contents after each command. But even stepping through
the commands slowly, it's behaving oddly. For example, the calls to
is_processing_complete() following start_capture() return 'NAK' the first
time, 'ACK' the second time, and 'TRUE/nACK' after that. The reply on the
second call looks incorrect to me.
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flagline
commented on July 18, 2024
It could be. I appreciate your input, but I've put in as much time as I can afford looking into this. Despite the glitches, this module has been super helpful.
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ppannuto
commented on July 18, 2024
I understand! Thanks for all your debug effort.
If you find the loop method to be robust enough as a workaround and think it's worth integrating generally in the library, I'm happy to take a PR.
In the meantime, I think I'm going to close this issue out as an upstream bug (attn @Marcus10110). Feel free to re-open (you or others) if new information merits.
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flagline
commented on July 18, 2024
No problem. For what I'm doing, it seems to be working, but I'm only using
a small subset of the commands. I think for a real solution, you'd need
to identify where the problem is coming from. I'm still a bit mystified as
to exactly what is going on.
…On Wed, Feb 26, 2020 at 8:12 AM Pat Pannuto ***@***.***> wrote:
Closed #54 <#54>.
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Related Issues (20)
- Add parameter to launch_logic allowing the caller to specify path HOT 4
- export_analyzer returns before csv file is completed HOT 3
- Random CommandNAKedError occurrence during "capture_to_file(log_file)" call HOT 3
- Implement get_sample_rate HOT 2
- enum34 should not be required above Python 3.4 HOT 2
- Path manipulation doesn't work when Logic is running on different OS than the Python module HOT 1
- get_analyzers raises IndexError HOT 4
- is_analyzer_complete raising self.CommandNAKedError when using custom analyzer HOT 1
- Windows str.replace not implemented properly HOT 3
- Implement several missing methods.
- get_capture_range throws ValueError HOT 1
- Export data to a python container HOT 2
- How to use this library with the new logic 2 HOT 1
- Is there a way to get ACK when the capture starts HOT 1
- AttributeError: partially initialized module 'saleae' has no attribute 'Saleae' (most likely due to a circular import) HOT 1
- Getting a type error while executing the launch_logic method HOT 1
- Saleae Init function doesn't take logic_path variable HOT 1
- Logic 2 Automation Interface - Feedback Request HOT 3
- Problem with export_data2 HOT 2
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