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GP counter gives occasional spurious readings

Question asked by Beade on May 27, 2015
Latest reply on Jun 21, 2015 by Prashant

Using one of the GP counters as a direction counter to monitor the position of a stepper motor, I am getting occasional spurious readings.  The following reading is fine, indicating that it is not a problem with the counter, but it is possible that the counter increments or decrements at the same time as I am reading it.  Any suggestuins as to how I could avoid this please ?

 

Read code is:

 

Motor1.Position = pADI_CNT0->CNTR;

 

Thank you

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