DRV8312-69M-KIT: Regarding Level 5 Build Issue

Shivanjali Mohite

Prodigy 170 points

Part Number: DRV8312-69M-KIT
Other Parts Discussed in Thread: CONTROLSUITE

Currently we are trying to verify Level 5 (Trapezoidal Control of BLDC Motors Using Hall Effect Sensors).

While building Level 5 we are getting compilation error as below. MATH_TYPE is set as IQ_MATH.

over 6 years ago

0 Yanming Luo over 6 years ago

TI__Guru** 116090 points

You may have a look at the following links to change the .cmd accordingly since you are using F28069M device, but the reference code is based on F28069.

https://e2e.ti.com/support/microcontrollers/c2000/f/171/p/418468/1931338

https://e2e.ti.com/support/microcontrollers/c2000/f/171/p/832121/3077993

And you don't need to change the MATH_TYPE in IQmathLib.h, which should be set to FLOAT_MATH in BLDC_Sensored-Settings.h. Please don't change anything to do an evaluation before you are familiar with the reference code.

0 Shivanjali Mohite over 6 years ago in reply to Yanming Luo

Prodigy 170 points

With respect to 1st link above, we changed the settings as in the attached snap, but the issue related to ISA error is still there. (when MATH_TYPE = IQ_MATH)

Secondly, we want to understand, why BLDC_Sensored-Settings.h shall have only FLOAT_MATH? [why IQ_MATH can not be used?]

How MATH_TYPE affects performance of Level 5 or Level 6?

For now, we changed the pid_grando.f file as below and Level 5 started working then. [bypassing _IQsat()] and MATH_TYPE = FLOAT_MATH

/*v.term.Out= _IQsat(v.data.v1, v.param.Umax, v.param.Umin); */ \
if (v.data.v1 > v.param.Umax) \
v.term.Out = v.param.Umax; \
if (v.data.v1 < v.param.Umin) \
v.term.Out = v.param.Umin; \
v.data.w1 = (v.term.Out == v.data.v1) ? _IQ(1.0) : _IQ(0.0); \

0 Yanming Luo over 6 years ago in reply to Shivanjali Mohite

TI__Guru** 116090 points

Download the controlSUITE and reinstall it, the original project should work well for F28069 if you don't change anything.

Btw, just need to change .cmd file as I reply above if you are using F28069M controlCard.

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DRV8312-69M-KIT: Regarding Level 5 Build Issue