DRV2605: the settings of the registers 0x16, 0x17, 0x1A

Fabio Gou

Part Number: DRV2605


May I ask whether the settings of the registers 0x16, 0x17, 0x1A are mainly determined the last settings, or is it recommended to determined in the Auto-Calibration stage?
1. Will the settings set in the Initialization stage be overwritten by Auto-Calibration?
2. Will Auto-Calibration settings affect the results of 0x18, 0x19, 0x1A?
3. After Auto-Calibration, if you set 0x16, 0x17, 0x1A again, is it valid?

over 3 years ago

0 Brian Donoghue over 3 years ago

TI__Intellectual 2620 points

Hi Fabio,

Sorry our haptics expert is currently on travel. Please give us a few days to get a response.

Brian

+1 Brian Donoghue over 3 years ago in reply to Brian Donoghue

TI__Intellectual 2620 points

Hi Fabio,

The DRV2605 setup guide has some more details on this. https://www.ti.com/lit/an/sloa189/sloa189.pdf

For auto-calibration, register 0x1A Bits [1:0] can be left blank and will be populated by the auto-calibration engine. Outside of that you need to set 0x16, 0x17, 0x1A manually before auto-calibration. If you change those values, then you should run auto-calibration again. Auto-calibration will not overwrite any of your values outside of those two bits.

Brian

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DRV2605: the settings of the registers 0x16, 0x17, 0x1A