How to test the oscilloscope i2c?

[Quinn]

Hi there.

I'm woking with sensor in board nRF51822. Do we have any tool to test oscilloscope i2c? I want to check the signal is same as what I sent or not.

Thanks.

[Hani Abidi]

Hi Quinn,

You can probe the I2C (SDA and SCL) lines with an oscilloscope or a logic analyzer to check your data.

https://www.saleae.com/

The logic analyzer for Saleae comes in very handy during debug.

Hani Abidi

[MartinBL]

Logic analyzers are great tools as Hani mentions. You can even tell the analyzer what protocol you are debugging and it will display relevant information about the transmissions. If you just have an oscilloscope I guess it is as easy as hooking the ground clips to ground on your board, and the probes directly onto the SDA and SCL lines? The guy asking questions in this thread uses an oscilloscope, while you can see a trace recorded with a logic analyzer in the comments.

[Quinn]

Thank you!