[Alan Anderson]

When using the ADXL345 in previous years, I chose I2C instead of SPI because it uses fewer wires. I don't remember ever trying SPI, so I can't personally confirm that it works.

The "not executed" indication on a probe just means that it hasn't been executed since the probe was attached. If you run the VI and then put a probe on a wire, you'll never see any values for things that only produce an output once at startup. So nothing outside the loop will have a value unless you place the probe before running the VI.

If you somehow managed to stop the VI when you opened the block diagram, you won't see any values either. Can you confirm that the "run" arrow at the top of the diagram is in the "running" state (solid black)?