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CCS/TMS320F28069M: error: unresolved symbol __IQ20log, first referenced in ~.

Kwan Hyoung Lee

Intellectual 860 points

Part Number: TMS320F28069M
Other Parts Discussed in Thread: MOTORWARE, C2000WARE, CONTROLSUITE

Tool/software: Code Composer Studio

I am currently combining proj_lab12b with proj_lab13b.

Errors are as follows.

unresolved symbol __IQ20log, first referenced in ~.

I don't know what's causing it.

Please tell me how to solve.

over 6 years ago

0 Yanming Luo over 6 years ago

TI__Guru** 117160 points

As replied to the similar thread you posted. You shouldn't change the including files or libraries, just modify the major file as you want.

https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/855292

0 Kwan Hyoung Lee over 6 years ago in reply to Yanming Luo

Intellectual 860 points

Anyway, Regardless of the proj_lab13b, I wonder how to solve the error.

0 Yanming Luo over 6 years ago in reply to Kwan Hyoung Lee

TI__Guru** 117160 points

_IQlog and _IQNlog were not used in motorWare. Did you add any your own code to call this function? Both functions are not supported in _IQmathlib.

0 Kwan Hyoung Lee over 6 years ago in reply to Yanming Luo

Intellectual 860 points

i have known that _IQlog and _IQNlog is used in motorware proj_lab13b

0 Yanming Luo over 6 years ago in reply to Kwan Hyoung Lee

TI__Guru** 117160 points

Only the lastest (v1.60+) IQmath library supports "log" function, you need to copy the IQmathLib.h and IQmath.lib from controlSUITE or C2000Ware to replace them in motorWare, or add "#include "sw/modules/iqmath/src/32b/IQLog.h" in the mainxx.h" if you want to use "log" function.