Logic analyzers are great tools when you know your signals are good, where the problem is the data itself. You also can't connect 2 resistors to a signal and see when it's "tristate" or floating.
As with all cheap clones, you might expect quality issues or other problems, but it might be worthwhile as a stepping stone to later buying the real hardware.īut something to keep in mind is digital-only sampling can hide signal quality problems. Their very oldest products are also widely cloned (since they were just a Cypress FX2 chip). If you can find one of the older ones used, get it. Sadly, the newer Saleae hardware (with analog channels) is very expensive. The Saleae software also makes sweeping through a massive data set fairly easy. My scope's 4M memory just isn't enough sometimes. I usually prefer to use my oscilloscope so I can see signal quality issues, but I do use Saleae when I need a long capture. One can often setup to have something in the code that triggers the logic analyzer to start the capture. And then I start trace, and do what is needed to get the code to do what I am wanting to trace and then stop the capture. But then again my debug way is the simple easy one with my Saleae, I often set as high a rate as I can go (example with 2 channels enabled I can go 500mhz) and I sometimes setup samples to be up to 10 seconds. Personally I would probably get one of their more expensive ones, as it gives you more speed and more sample depth. Example two days ago used it to detect where the T4 beta code EEPROM write was hanging.Īs for these versions, I have never heard of them, but if it does what you want, I would try it out.
I sprinkle in some digitalWrites into key areas of code and I can then detect when/if this code ever executes. I also use it to help debug other things, like I might use one or more unused IO pins, to help debug some code. I too am a hobbyist, and I personally own a couple of the Saleae logic analyzers and they have helped me a lot, and I use them for lots of different thing, like trying to understand exactly what Serial data I am generating and/or receiving, likewise for several other different protocols. Depending on what it is you wish to do, having a Logic Analyzer can help a lot in understanding things and debugging stuff.
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