DRV2624 Datasheet, PDF (67/79 Pages) Texas Instruments – DRV2624 Ultra Low Power Closed-Loop LRA/ERM Haptic Driver with Internal Memory

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Initialization Set Up (continued)
DRV2624
SLOS893A – DECEMBER 2015 – REVISED DECEMBER 2015
NOTE
The DRV2624 device defaults to closed-loop mode with external trigger option selected in
the level (enable) configuration and in RTP mode. To use other modes and features, refer
to the regiter map.
9.3.2 Typical Usage Examples
9.3.2.1 Play a Waveform or Waveform Sequence from the RAM Waveform Memory
1. Initialize the device as listed in the Initialization Procedure section.
2. Select the desired TRIG/INTZ pin function by changing the TRIG_PIN_FUNC parameter.
3. Identify the waveform index to be played and populate the waveform sequencer.
4. Trigger the waveform using the desired trigger method (GO bit, or external trigger). Note that if using the
interrupt functionality, only the GO bit can be used to trigger the process.
5. Device will automatically go into standby upon completion of the playback
9.3.2.2 Play a Real-Time Playback (RTP) Waveform
1. Initialize the device as shown in the Initialization Procedure section.
2. Write the desired drive amplitude to the real-time playback input register RTP_INPUT[7:0].
3. Trigger the waveform using the desired trigger method (GO bit, or external trigger). Note that if using the
interrupt functionality, only the GO bit can be used to trigger the process.
4. Continue writing to the RTP_INPUT[7:0] if/when desired to achieve the desired haptic effect.
5. Send a stop trigger using the desired trigger method (GO bit, or external trigger). Note that if using the
interrupt functionality, only the GO bit can be used to trigger the process.
6. Device will automatically go into standby upon completion of the playback
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