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Original question:

CCS/LAUNCHXL-F28069M: motorware lab

CCS/LAUNCHXL-F28069M: encoder count value

Safwat Ahmed Choudhury
Intellectual 285 points
Part Number: LAUNCHXL-F28069M

Tool/software: Code Composer Studio

hello,

I am currently working on lab 13b. after positition control application is there any way to access the encoder counts that my encoder made?

safwat

  • 0
    TI__Guru** 114280 points

    Read the QEP position counter register (QPOSCNT) as the HAL_getQepPosnCounts() function which returns the counts you want.

  • 0 in reply to Yanming Luo
    Intellectual 285 points

    hello,

    Thanks for the reply. I checked the QPOSCNT register. it is counting upto 4096 for 1 revolution and then restarting the count. is there any way to know how many times the counter is going from 0 to 4096. for example if motors position control is set to 5 revolutions then the counter would go from 0 to 4096  five times so that i can multiply 4096 x 5 to get the overall pulse edge count. is there any way to know that?

    safwat

  • 0 in reply to Safwat Ahmed Choudhury
    TI__Guru** 114280 points

    No such register to count the coming times of index from encoder, you have to write a function to count the rotation times of the motor by yourself.