Gyroscope Slope Calibration Issue and Resolve for Nano BLE 33 Sense Rev 1

[Heathfield]

Hi,
I am using Windows 10, Arduino IDE 2.3.2 and Nano BLE 33 Sense Rev1

The instructions given in the sketch are _"This also enables the next step, which is to calibrate the slope. During a slope calibration the sensor must be rotated calmly about one axis over a known angle. This angle can be changed to your convenience. A larger angle is more accurate, but more difficult to do. The rotation can be done by hand. It must must be pure, without much rotation about the other two axes. e.g. by keeping the board on a flat surface with the rotation axis vertical while turning is good enough.

• Press Enter to finish the measurement. "_

Issue
Pressing Enter does not finish the measurement but causes the sketch to hang.

Resolve
Send "C" to the Nano to finish the measurement