sky9x board - bug

[Rob Thomson]

Hello,

I found something really odd on my sky9x board today.

I as doing some work today to improve haptic feedback.

Part of this task involved me stripping all haptic code out of the firmware. So no actually audio event fires the motor.

What I noticed is that when a long beep is applied to the speaker - the haptic motor fires at a very low speed! Almost like there is some sort of current leakage?

Mike, any chance this is a driver issue? Can you try replicate on your end?

Rob

[MikeB]

I'll have a look tomorrow, it's possible, I disable the PWM and force the output low from the PWM, but maybe, if it is disabled. it doesn't get forced low.

Mike.

[Rob Thomson]

Actually...

Ignore that! I found the issue. Just me being an idiot

Rob

[MikeB]

I have, however, checked the haptic signal from the processor, it is driven low (off) into the transistor when not active. I did need to check this as the processor could have left it floating.

Mike.