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Serial packets lost

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Serial packets lost

Postby seamelin » Tue May 23, 2017 7:06 pm

I'm trying to monitor a 3V3 UART at baud rate 56700/8N1 using a 2205AMSO. My problem is that only a small part of the packets (charters) I type into the terminal are visible and serially decoded in PicoScope. Any idea what could be the reason for this?

The packets that are shown are generally correctly decoded, and I have verified several times (using a loopback connection) that the characters written to the terminal are actually put on the line. Could the lost packets be lost in buffer switches or something similar?
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Re: Serial packets lost

Postby seamelin » Mon May 29, 2017 6:47 pm

Is there any reason why serial decode at the baud rate mentioned above would not work with my Picoscope, or should I assume it's broken?
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Re: Serial packets lost

Postby bennog » Tue May 30, 2017 9:48 am

Can you post a .psdata example file ?

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Re: Serial packets lost

Postby Martyn » Wed May 31, 2017 7:07 am

A data file would help to confirm but I guess you are collecting to multiple waveform buffers and sometimes the packets are sitting across the gaps between these and so can't be decoded correctly.
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