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Original question:

DRV2605: How can I get the normal Waveform as the reference

DRV2605: DRV2605 vibration effect performance question

Vincent Li00
Intellectual 2035 points
Part Number: DRV2605
Other Parts Discussed in Thread: DRV2603, DRV2603EVM-CT

Hi Guys

Our customer wants to use our DRV2605, there are a few of questions below:

1. The motor used by the customer is a dual axis instead of a single axis. Can we support the vibration effect of the double resonant frequency(160Hz and 320Hz)? Mainly use 160Hz. Is it possible to adjust the resonance frequency to 160 Hz by calibration; How to perform this type of calibration?
2. Can our 123 vibration effects be customized? I mean we want to produce a variety of different effects If so, is there any relevant documentation explaining our special effects?
3. If we use DRV2603, can we provide customers with a DRV2603-based program or firmware to generate PWM vibration waveforms?
4. In addition to the handheld device application, is there an application for our product in the gamepad? What brand of handle?

Thanks. Your feedback are very appreciated.

-Pengfei

  • 0
    TI__Guru* 84915 points

    Hi, Pengfei,

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

    1.- Yes, the double resonance frequency can be supported by the DRV2605. However, it must be configured manually in open-loop mode. The closed-loop mode will try to sense the correct resonant frequency and there could be risk to select 160Hz or 320Hz. In open-loop mode, the frequency is configured by the user. We have a guide document that could help to configure the DRV2605 manually:

    http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=slor114&fileType=zip

    2.- There's around 120 effects that can be used individually or in sequence. The DRV2605 library offers the capability to handle each effect as the user requires. We don't have a document that explains each of all these effects. However, the DRV2605EVM and the Haptics Control Console can be used for analysis purposes. The Control Console can be easily used to configure each effect on the board.

    3.- I'm not familiarized with the PWM vibration waveforms, but we can provide the DRV2603EVM-CT Source Codes. The integrated MSP430xx microcontroller features a PWM output which is used for these purposes. All the .h and .c files are located in this link:

    http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=sloc268&fileType=zip

    4.- Could we check this question via email or E2E chat?

    Best regards,
    Luis Fernando Rodríguez S.