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BOOSTXL-DRV8305EVM: Flag_Run_Identify Explanation

Part Number: BOOSTXL-DRV8305EVM

Can I get a bit more explanation of this parameter? In the related question the user was directed to the tutorial series on motors which I have reviewed and this parameter is not explained well at all. It is always discussed in the context of determining the motor values. Once you know those values and place them in the user.h file it would seem that this is no longer relevant but like the original question, I am trying to make the motor start spinning faster and this seems to send the motor into a delay for identification. 

Could you give some guidance on what parameters need to be adjusted for the case of the motor has already been identified and the user.h file updated. I am trying to make the motor spin without going through the calibration cycle and its related delays. 

Thanks,

Terry

  • It's a control variable to enable/disable the motor running or identification, you might take a look at the lab guide that shows how to set the bool variable as below.

    True ( 1) - Enable the motor run or identify

    False (0) -Stop the motor

    Only lab02a/b/c use this flag to enable identification, other labs use it to run/stop the motor.

  • OK I understand, I have asked before without getting an answer. There is a 3-5 second lag time from the assertion of this parameter until the motor starts. We are trying to make this much quicker. I have turned off the RsRecalc and that helped but it seems as something is still hanging the start of the motor. Can you please give some guidance as to where/how to address this issue so that we can start the motor more quickly. The motor at startup does have a load but it is quite low. After the initial startup the motor can be stopped and then restarted and it is much quicker. 

  • Which example lab are you working on?

    You might take a look at the lab10e that could re-start the motor quickly.