Both of My current sense resistor is 0.2 om, and my AVREF an BREF is set to the same value.
So,according to the calculation formula， the current chopping threshold for the maximum current step I(fs) = Vref.
I set the Vref (pin12 and pin13) to 0.13V, when the step motor stoped, the actual current is 0.12A.
I set the Vref (pin12 and pin13) to 0.24V, when the step motor stoped, the actual current is 0.13A.
I set the Vref (pin12 and pin13) to 0.41V, when the step motor stoped, the actual current is 0.15A.
I set the Vref (pin12 and pin13) to 0.70V, when the step motor stoped, the actual current is 0.18A.
Why the actual current is always lower than the set-up current?
