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26 lines
708 B
Plaintext
26 lines
708 B
Plaintext
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workflow:
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- connect zprobe (note: it currently inverts because it didn't have any
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other chips around. this may change later.)
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- capture the USB signals at an interesting moment with a sample rate of
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50 MSa/s
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- zoom into the frame(s) of interest
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- download the data with
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./get.py
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- decode with
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./dec.py
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For manual decoding, set the coders to D+ and D- (we need D- for SE0
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and SE1 detection), then click on a rising clock edge left of the
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packet and move the cursor to the right.
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- if there are problems with the clock, the analog signal and digital
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signals derived from it can be examined after running dec.py with
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./plot
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(Note that the digital zprobe hides any analog anomalies.)
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