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I2C trigger (or device ?) problem

wolfmanus
Thu, 06 Apr 2023 09:30:37 GMT

Device model: SP209i Device Serial Number: 100421100171 ScanaStudio: 5.1.3 Trigger settings: Sequence: A ro B, Trigger on any frame, Valid start condition. I2C scan packet capture sometimes(!) it works: [I2C scan](//muut.com/u/ikalogic/s3/:ikalogic:2bMc:i2cscan.jpg.jpg) Larger package capture doesn't work (waitng, and waiting... and ...wainting...): [Data](//muut.com/u/ikalogic/s3/:ikalogic:RWkH:data.jpg.jpg) [Data_zoom](//muut.com/u/ikalogic/s3/:ikalogic:FxGR:data_zoom.jpg.jpg)

Ibrahim KAMAL
Thu, 06 Apr 2023 14:50:06 GMT

Hello, This is only a software issue. To help us narrow down the issue, can you trigger on falling edge insdead of trigger on I2C frame ? Thank you very much,

wolfmanus
Thu, 06 Apr 2023 15:56:41 GMT

Hello, This settings (falling edge) sometimes catch the packages (often only a part of) but not always (like my picoscope 5444B)

Ibrahim KAMAL
Thu, 06 Apr 2023 16:16:37 GMT

This is quite strange. Can you please send us (by mail) a *.scana workspace file with some captured data, we'll check all the configuration and get back to you. (one stupid question, if you don't mind: is the ground connection correctly made between the SP209 and your board?)

wolfmanus
Thu, 06 Apr 2023 17:17:45 GMT

I can send it tomorrow the files. (The device is new, we've bought it recently from the exp-tech.de) Of course the GND wire always correctly connected to the tested I2C channel GND sign, and I watched the correct order (SCL/SDA wire) also.

Ibrahim KAMAL
Thu, 06 Apr 2023 17:37:16 GMT

Okay, looking forward to hearing from you. All devices undergo 100% testing before delivery, so i highly suspect a hardware issue. That being said, rest assured, if it's a hardware issue, we'll exachange it for new one :)

wolfmanus
Fri, 07 Apr 2023 17:49:47 GMT

Can I upload video? (clearly shows the problem). Of course I send the workspace file.

Ibrahim KAMAL
Fri, 07 Apr 2023 22:03:25 GMT

You can send us the video also by mail. Thanks