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Open Bench Logic Sniffer / SOLVED: Trouble capturing SPI
Communication with the device can begin after CSN goes low and after I'm done I bring it back high. From what I have read I think I understand how to at least set up simple parallel triggering. If I triggered on CSN high to low I would be able to capture all the data on the selected channel group up to the available storage. The reason I point that out is because I have a few transitions on CSN. After CSN goes high it should go low again somewhere in the 200ns range but I am not seeing it.
Could anyone provide some pointers as to what I am doing wrong?
SOLUTION
I started off by making sure I could at least capture a square wave from my micro and then started on the SPI code, slowly building it up till it broke.
The device I was interfacing with needed a few delays. Unfortunately during the pin setup the CSN pin (as well as others) glitched. The glitch just happened to resembled what I was looking for. The initial delay was so long that the capture storage had already been filled before the real trigger appeared. Enabling RLE was the solution.