Lab 8: IQmath FIR Filter
8 - 36 C2000 Microcontroller Workshop - Numerical Concepts
F2806x_GlobalVariableDefs.c
F2806x_Headers_nonBIOS.cmd
Project Build Options
2. To configure the build options, right-click on Lab8 in the Project Explorer
window and select Properties. We need to setup the include search path to include
the IQmath header file. Under “C2000 Compiler” select “Include Options”. In the
lower box that opens (“Add dir to #include search path”) click the Add
icon (first icon with green plus sign). Then in the “Add directory path” window type:
${PROJECT_ROOT}/../../IQmath/include
Click OK to include the search path.
3. Next, we need to setup the library search path to include the IQmath library. Under
“C2000 Linker” select “File Search Path”. In the top box (“Include
library file or command file as input”) click the Add icon. Then in the
“Add file path” window type:
IQmath.lib
Click OK to include the library file.
In the bottom box (“Add <dir> to library search path”) click the Add
icon. In the “Add directory path” window type:
${PROJECT_ROOT}/../../IQmath/lib
Click OK to include the library search path.
Finally, select OK to save and close the Properties window.
Include IQmathLib.h
4. In the Project Explorer window edit Lab.h and uncomment the line that includes
the IQmathLib.h header file. Next, in the Function Prototypes section, uncomment
the function prototype for IQssfir(), the IQ math single-sample FIR filter function. In the
Global Variable References section uncomment the four _iq references. Save the changes
and close the file.
Inspect Lab_8.cmd
5. Open and inspect Lab_8.cmd. First, notice that a section called “IQmath” is being
linked to L4SARAM. The IQmath section contains the IQmath library functions (code).
Second, notice that a section called “IQmathTables” is being linked to the
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