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Chapter 7: Using the Interfaces Library
7–15
Avalon-MM Interface Blocks Design Example
Testing the DSP Builder Block from Software
Altera provides a C program that loads a set of four coefficient into the filter, reads
them back, and then repeats the process. To use this program, follow these steps:
1. On the Nios II menu in Qsys, click Nios II IDE .
2. Create a new Nios II C/C++ application as follows:
a. On the File menu in the Nios II IDE, point to New and click Project .
b. Nios II C/C++ Application .
c. In the New Project wizard, select Nios II C/C++ Application and click Next .
d. Type test_DSP_Block for the Name of the project and select the Blank Project
template.
e. Turn on Specify Location and browse to the directory < DSP Builder install
path > \DesignExamples\Tutorials\SOPCBuilder\SOPCBlock\MySystem .
f. Click on Make a New Folder and create a software subdirectory.
g. Click OK .
h. Browse to the System PTF file < DSP Builder install path > \DesignExamples
Tutorials\SOPCBuilder\SOPCBlock\MySystem\SOPC.ptf
i. Click Finish in the New Project wizard.
j.
Verify that the application project test_DSP_Block appears in the Nios II
C/C++ Projects list.
3. Add the test software to the new project as follows:
a. Locate the file test_DSP_Block.c in your file system. ( < DSP Builder install
path >\DesignExamples\Tutorials\SOPCBuilder\SOPCBlock )
b. Right-click on the test_DSP_Block.c file and click Copy .
c. Select the test_DSP_Block project folder in the Nios II IDE and paste the
test_DSP_Block.c file into the project.
4. Set some of the reduced code footprint options in the Nios II IDE as follows:
a. Right-click on the Nios II IDE application project, test_DSP_Block , and click
Properties .
b. In the Properties dialog box click System Library .
c. Turn on Reduced device drivers and Small C library .
d. Turn off Support C++ .
e. Click OK .
5. Run the test_DSP_Block software project in the Nios II IDE by right-clicking on
test_DSP_Block and clicking Run As Nios II Hardware .
The project compiles and the application code runs on the development board.
Observe the following results in the Nios II IDE Console :
LOADING...
Coefficient 1 = 1
November 2013
Altera Corporation
DSP Builder Handbook
Volume 2: DSP Builder Standard Blockset
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