DSP Hardware Design II - Digital Signal Processing Laboratory - page 150

• Finally, click on Finish . CCS has now created a project file

filtering_signal&noise.pjt , which will be used to build an exe-
cutable program. This file is stored in the folder c:\ti\myprojects\
filtering_signal&noise. The. pjt file stores project information on
build options, source filenames, and dependencies.

• Loading the support files

Add the following support files to the project c:\ti\myprojects\
filtering_signal&noise . Remember header files are included by
scanning all dependencies, after all files have been added, including
source files.
• C6xdsk.cmd

• C6x.h

• C6xdskinit.c

• Vectors_11.asm

• C6xdsk.h

• C6xinterrupts.h

• C6xdskinit.h

• rts6701.lib

• Loading the program files

Add the C source files fir.c and the filter coefficient file bandpass.cof
into the project directory c:\ti\myprojects\filtering_signal&noise .

Step 4: Hardware setup for the filtering of two sinusoidal signals
• Connect the experimental setup as shown in Figure 8.4

• Generate a sinusoidal signal, s ( t ), of amplitude 0.5 volts and fre-

quency of 3 KHz, using the HP 3324A Signal Generator. Check the
output of the generator on the HP 35665A Dynamic Signal Analyzer,
and make a plot of the pure sinusoidal signal on the printer.

HP 35665A
Dynamic
Signal
Analyzer

TMS320C6711
DSK
(Bandpass
filter)

HP 3324A
Signal
Generator
Signal 1: s(t)

+

HP 35665A
Dynamic Signal
Analyzer
Noise: n(t)

FIGURE 8.4
Experimental setup for filtering of a noisy signal.