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Flipper raw #1000

Merged
merged 3 commits into from
Aug 22, 2022
Merged

Flipper raw #1000

merged 3 commits into from
Aug 22, 2022

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andynoack
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Add support for Flipper Zero .sub files

  • Read
  • Write (only if the source was a .sub file and with constant parameters)

Future work: Implement export to .sub files in Generator as a plugin (similar to YardStick that also uses CC1101) to support different parameters.

Note that all parameters (Frequency, Preset, ...) in the .sub-file are constants and export will only work for .sub-files
@andynoack andynoack requested a review from jopohl August 22, 2022 07:37
@andynoack andynoack self-assigned this Aug 22, 2022
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Thanks for adding Flipper Zero support!

src/urh/util/FileOperator.py Outdated Show resolved Hide resolved
Comment on lines +151 to +154
if intval > 0:
arr.extend(np.full(intval, params["max"], dtype=params["fmt"]))
else:
arr.extend(np.zeros(-intval, dtype=params["fmt"]))
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Curious about the performance of this: As arr is a python list it needs to be converted to a numpy array down the road. Did we test loading larger sub files? Does it have an acceptable performance? An improvement would be to allocate a numpy array of desired size before entering the loop, e.g., with arr = np.zeros(N) and then set its values in the loop.

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Usually .sub files are rather small, so that wouldn't be a problem in practice. Due to the file format concept, you unfortunately do not know the number of samples beforehand. I would rather like to stick to the 1-pass solution and risk a slower performance for unusual large files.

src/urh/signalprocessing/IQArray.py Outdated Show resolved Hide resolved
with open(filename, 'r') as subfile:
for line in subfile:
dataline = re.match(r'RAW_Data:\s*([-0-9 ]+)\s*$', line)
if dataline:
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Shouldn't we rather check

Suggested change
if dataline:
if len(dataline) > 1:

as we refer to dataline[1] in the next line?

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@andynoack andynoack Aug 22, 2022

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When re fails, dataline does not have a len. This code follows the concept from: https://gist.github.com/jinschoi/40a470e432c6ac244be8159145454b5c

@andynoack andynoack merged commit 6ae113d into master Aug 22, 2022
@andynoack andynoack deleted the flipper_raw branch August 22, 2022 13:36
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2 participants