MMA865xFC Sensor Toolbox User’s Guide, Rev. 0
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Freescale Semiconductor, Inc.
4.9
Directional Shake with FIFO application
The Directional Shake Application demo evaluates the built-in algorithm for detecting transient events in
conjunction with the FIFO. You can evaluate Freescale’s default configuration and modify those settings,
to tailor a demonstration for your target application.
This demo includes MCU-status and estimated-current displays, which enable you to demonstrate the
device’s power-saving sleep mode feature.
4.9.1
Active screen
The Active screen contains a set of indicators that change to green when a transient event (shake) is
detected. In the middle of the application window, a graph displays the data that is stored in the FIFO,
triggered by the shake event.
•
The detected shake directions are indicated by the left radio LEDs.
Green means that the shakes are detected.
•
The Software Algorithm field shows the last shake detected.
•
The MCU state and estimate current are shown on the right.
Note:
Before changing any
of the Active screen’s
settings, select the
Standby option button.