You can see if the project starts correctly by just opening a virtual tty on the port at the correct speed and verify that when you reset the board you have some messages printed like-------------------------------------------| READY to receive a CMD...
Have you tried the built-in projects (validation on target or system performance) ?If they work it is likely that either the activation buffer is not correctly allocated / declared or there is an issue with the input or output buffers
In the UI, with the TFLite Micro runtime you are able to do an automatic validtion on the target that will generate, compile and flash a validation program on the target and then run the "validate" command of the tool.With the validate command you'll...
X-CUBE-AI inside STM32CubeMX can create for you a project using the tensoflow lite micro runtimeThe snapshot that we use is not the latest one but at least it should give you a working project that you can then update with the latest sources.