DRV2605: Waveform Sequence issue

Lumina Gui

Part Number: DRV2605

Tool/software:

Dear TI Engineer,

We refer to the datasheet to set the waveform sequence by write the register GO, and it can only play the waveform once. Writing to the GO register after that has no effect.

The effect we want to achieve is that the linear motor can rotate between strength and weakness, which has the same wave-like effect as the waveform.

Can you help to confirm whether this requirement can be realized? If yes, how to set the registers?

Thanks,

Best Regards

10 months ago

0 Hailong Chen 10 months ago

TI__Expert 3960 points

Thanks for reaching out. I will provide the feedback soon.

0 ?? ? 10 months ago

Prodigy 10 points

My email is caiyuxin@seilon.ai

0 Hailong Chen 10 months ago in reply to ?? ?

TI__Expert 3960 points

Thanks for the contact.

0 Lumina Gui 10 months ago in reply to Hailong Chen

Genius 3690 points

Hi Hailong,

Is there any feedback for this application?

0 Hailong Chen 10 months ago in reply to Lumina Gui

TI__Expert 3960 points

Lumina,

Yes. please look at the 7.3.5.6 Input Trigger Option of the data sheet.

The DRV2605 device includes continuous haptic modes (such as PWM and RTP mode) as well as triggered modes (such as the internal memory interface). The haptic effects in the continuous haptic modes begin as soon as the device enters the mode and stop when the device goes into standby mode or exits the continuous haptic mode. For the triggered mode, the DRV2605 device has a variety of trigger options that are explained in this section.

In the continuous haptic modes, the IN/TRIG pin provides external trigger control of the GO bit, which allows GPIO control to fire ROM waveforms. The external trigger control can provide improved latencies in systems where a significant delay exists between the desired effect time and the time a GO command can be sent over the I2C interface.

Motor drivers

Motor drivers forum

DRV2605: Waveform Sequence issue