Todays snapshot:
RC delay, 100 ohm, 220pF, 2 NOR gates with trailing edge circuit.
Looks like a good capture and gives better results but I'm still seeing HW errors, though not so many now.
I'm going to look at USB errors now as some of the HW errors seem to be secondary effects of those. I may move to fixed data records as USBLIB calls don't make it easy to deal with variable length data. You have to know the length in advance or deal with timeout errors, and then it's common to see double records that get truncated.
RC delay, 100 ohm, 220pF, 2 NOR gates with trailing edge circuit.
Looks like a good capture and gives better results but I'm still seeing HW errors, though not so many now.
I'm going to look at USB errors now as some of the HW errors seem to be secondary effects of those. I may move to fixed data records as USBLIB calls don't make it easy to deal with variable length data. You have to know the length in advance or deal with timeout errors, and then it's common to see double records that get truncated.