Part Number:DRV8308EVM
I bought the DRV8308EVM KIT last week. Seems there is an issue. GUI close loop speed control doesn't work.
That is exactly the same issue as Peter, here is the details:
PWM mode works fine (first GUI tab).
Second GUI tab, Clock frequency Mode doesn't work.
When I enabled motor in the second tab, the motor spins the same way as it was in tab 1 (pwm mode). When I changed CLK frequency knob on the GUI, motor speed didn't change.
Enable MCU clock checked in the third tab.
Another thing strange is that no matter how I change the SPDMODE register setting in the third tab, it will go back to 1-PWM mode automatically in one second.
I think there is BUG either in your GUI or the MSP430 firmware.
Please advise.
Regards,
Ian