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  • TI Thinks Resolved

DRV2604: Are there any Linux companion programs that upload wave-forms and trigger from the internal memory and can I have some sample LRA wave forms to evaluate the performance of the LRA driver in its enclosure?

Intellectual 2965 points

Replies: 1

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Part Number: DRV2604

Hi Motor Drive team,

Posting this Q on behalf of my customer.

We are using a TI DRV2604 connected to a 3.3V rated LRA motor for use in a small handheld product. This part was chosen as the UX team would like to have full control over the haptic behavior using custom wave-forms.

The driver is connected via I2C and has both EN and IN/TRIG connected to standard SoC GPIOs. Our preferred mode is to trigger pre-uploaded wave-forms which are set at system initialization.

 

  1. We have integrated the TI mainline driver and calibration works correctly. In reviewing the source code, it appears that this driver is primarily for operation in LRA_NO_CAL mode. Are there any Linux companion programs that upload wave-forms and trigger from the internal memory.

 

  1. Could TI provide some sample LRA wave forms to evaluate the performance of the LRA driver in its enclosure. Some sample clicks and rumbles of various intensity would be sufficient.

 

Thanks,

Lauren

  • Hi, Lauren,

    Please take a look at my questions below and let me know if you have additional questions or comments.

    1. We have integrated the TI mainline driver and calibration works correctly. In reviewing the source code, it appears that this driver is primarily for operation in LRA_NO_CAL mode. Are there any Linux companion programs that upload wave-forms and trigger from the internal memory.

    I'm not aware of Linux programs that upload and run the waveforms as you mentioned. The only software that can be used to develop your waveforms is the Haptics Control Console. This console has a RAM manager that you may use with the help of the DRV2604EVM in order to test the different waveforms. Are you looking for a specific waveform?

    2. Could TI provide some sample LRA wave forms to evaluate the performance of the LRA driver in its enclosure. Some sample clicks and rumbles of various intensity would be sufficient.

    Yes, we have some examples of clicks at different intensities. Please take a look at the attached pictures of the scope captures of the DRV2604EVM. Let me know if you require additional examples.

    AACELV1411.zip

    Best regards
    Luis Fernando Rodríguez S.

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