Other Parts Discussed in Thread: DRV2605
Hi Ti,
Here's some question of DRV2604.
1. It looks like library is using 3.3V rated voltage. If use VDD as 4.2V and also want to play the library's waveform ,will it be dangerous?
2. If want to change the amplitude of output in close loop , should I change RATED_VOLTAGE or RTP_INPUT?
3. According to "Calibration failures are typically fixed by adjusting the registers associated with the automatic level-calibration routine or, for LRA actuators, the registers associated with the automatic-resonance detection engine."What action will be taken after auto-resonance fails in the Datasheet?Because there's no definition of it in datasheet.
4. According to"The DRV2605 device allows the user to control how fast the driver attempts to match the back-EMF (and thusmotor velocity) and the input signal level."
Could explain the relationship loop-gain between Back-EMF and input signal level in more detail?
5.According to Adress 0x19 "Auto-calibration back-EMF (V) = (A_CAL_BEMF [7: 0] / 255) × 1.22 V / BEMF_GAIN [1: 0]"
Why the BEMF_GAIN becomes larger, the smaller value of back-EMF we get?
6. If I choose a different actuator today, what parameters are critical, needed to be set on Auto-Calibration?Is there anything else that we should pay special attention to ?
Waiting for your reply
Thank you.
Scott
