My usual workflow is: edit, build, debug, and repeat. And this for the same project again and again. So, here are a few tips on how to make these iterations faster with Eclipse. One thing is to use the F11 shortcut to debug the last launched/debugged application:

Especially when working with multiple projects, I don't have to select the project I want to debug: it always will launch and debug the last one I was using. This setting is available with Eclipse Oxygen (e.g. MCUXpresso IDE 10.2).

That F11 shortcut might be different for you (check your menu entry). You can change/check the available shortcuts in the Eclipse workspace preferences, under General > Keys:

Note that I still have to terminate a running debug session. There is a "Terminate and Relaunch" setting in Eclipse CDT, but this one does not work reliably (at least not in CDT of Eclipse Oxygen, I have not checked this in Eclipse Photon yet).

But the MCUXpresso IDE (I'm using 10.2) has a nice extension to do the "terminate-and-debug-again" with a button in the Quickstart panel:

Note that this is using the currently selected project (marked in yellow above) and includes a build phase. I can skip the build part with the "Build (if required) before launching" setting workspace setting:

Of course, with that setting, I'm responsible for building before I debug if I have changed the sources.

In earlier Eclipse versions (e.g. Kinetis Design Studio 3.2.0, Eclipse 4.4 Luna), I have used the "always launch the previously launched application" to stick to the last launched application:

These tips and tricks help me to work faster with less mouse clicks. I hope you find these tips useful.

Happy debugging!