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I2C/TWI Not Displaying Packet Contents

devinm
Fri, 28 Dec 2018 02:38:03 GMT

Hi everyone, I got my SQ100 for Christmas and I'm learning how to use it. I've never used a logic analyzer before. The issue is that, despite capturing data on the bus, the packets appear to be empty in the packet and hex views, but not in the graphical depiction of the capture. I'm sure I'm just going about it wrong. I've attached a screenshot as well as the .scana file. Thanks in advance. [I2c_scana](//muut.com/u/ikalogic/s3/:ikalogic:YlzY:i2c_scana.png.jpg)

Ibrahim KAMAL
Mon, 31 Dec 2018 08:39:44 GMT

Hello Devinm! Thank you for contacting us. Looking at the attached picture, it seems like the SDA line is very noize, which explains why the decoder is not able to interpret any meaningful data. Are you use the logic voltage is correctly set? Can you try inverting SDA and SCL on the SQ100 and see what happens? Also, i can't find the *.scana file, can you mail it to [email protected] ? Thanks!