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