IOS App Overview
6.3.2
Register Control
The Register Control menu gives the user access to the registers of the DRV2605 over BLE by performing
I
2
C Write and I
2
C Read . Some sample registers the user could read or set are Autocal, brake factor,
Audio2Haptics, Overdrive, LRA resonant frequency read register, and DRV input voltage monitoring
registers. To change a register, place the cursor in the textbox and a hex-keypad will appear. Note that
the inputs are in hex format from this tool. Type in the appropriate values and perform a read or write
operation.
Figure 16. I
2
C Keypad – Register Control Screen
In addition to the I
2
C read and write access, quick switches allow the user to control settings applicable to
different vibration motors. For example, the ERM/LRA switch toggles between the type of the output
waveform that is played.
The rated voltage is the drive voltage to the actuator. It can be adjusted by touch, or touch and hold, to
increment or decrement the value on the indicator.
The overdrive clamp controls how much of a startup push is given to the motor. The overdrive feature of
the DRV2605 makes the effects crisp. It is usually 1.5× to 2x higher than the rated voltage, but check the
actuator data sheet for more information.
17
SLOU391 – May 2014
DRV2605EVM-BT User's Guide
Copyright © 2014, Texas Instruments Incorporated
