Lab 2. CCS Introduction
 Plateform:
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–
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Spartan 6/OMAP-138 coprocessing kid
FPGA: Xilinx Spartan 6
DSP: TI 6000
CUP: ARM processor
 Code composer studio (CCS):
– An integrated development environment (IDE) for Texas
Instruments (TI) embedded processor families.
– It includes compilers for each of TI's device families, source
code editor, project build environment, debugger, profiler,
simulators, real-time operating system and many other
features.
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 The plateform:
Ethernet plug
On/off
Power
USB
plug
S7
switch
Reset
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 The setting of S7 switch:
 The first, the fifth, and the eighth switches must be on
(DSP only).
 The other setting is that all are off except the first one
(DSP and ARM).
 Turn on the plateform.
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 Activate the CCS form the Program files
– TI  Code composer studio v5
 First, you have select a directory for the workspace.
 Then, File  New  create a CCS project.
 Give a project name and select the family of the device as
C6000, and the variant as OMP138.
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 Click the finish icon and you are ready to edit a C file.
 After you finish the editing, you can select
– Proj  Built all
* Print a couple of words.
 Make sure you are in the Edit mode rather than Debug
mode (shown on the right up corner).
 Then, click
– Run  Debug (link/loading)
 If there is an error indicating the system is in reset, then
press Reset and try again.
 If there is an error indicating a target configuration is
needed, press “yes” and
– Select the device TI XDS100v2 USB emulator,
– Then press “save”.
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 Finally, you can click Run Resume to execute the
program.
 If you want to execute the program again, you can click
Run  Restart
 Once the program has been executed, you can click the
Terminate to return the edit mode.
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 Icons:
Resume
Terminate
Pause
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 Make sure to include stdio header file (#include <stdio.h>)
 Practice 1:
– Run the convolution program created in the last week in the
CCS environment.
 In CCS, you can plot the signal stored in the memory.
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Must in the pause mode (put an idle loop).
Debug  Run  Pause
Tools  graphic  single time
Change the parameters for the plot
* for (; ;)
{
}
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 Then,
length
data type
decimation
factor
signal
display length
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 You can also plot the spectrum of a signal.
– Tools  graph  FFT magnitude
interlaced input
Complex
FFT size: 2n
Graph properties:
re-input parameters
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

CCS provides many build-in routines in its libraries.
Before they can be used, we have to do some setup.
Select Project and then Properties:
– Properties  C6000 compiler  include options
– Add one option: “C:\Program Files\Texas
Instruments\dsplib_c674x_3_1_0_0\packages\” (in the
upper blank)
– Properties  C6000 linker  file search path
– Add one file: “C:\Program Files\Texas
Instruments\dsplib_c674x_3_1_0_0\lib/dsplib.a674” (in the
upper blank)

Copy dsplib.h into the project you are working on and
add “ #include “dsplib.h” ” in your C program.
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
Use the convolution routine from the DSP library:
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DSPF_sp_convol(x, h, y, nh, ny);
x: input signal, h: filter, y: output signal
nh: length of h, ny: length of y (both have to be even)
x has to be zero padded (before and after x)

If there are more than one C programs in a project. You
can de-activate one by pressing right mouse on the file
and selecting Recourse configuration and then Exclude
from Build ... (check Debug and Release)

Practice 2:
– Use the build-in routine to conduct the convolution
operation and compare the result with the one you have
written.
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 Use the FFT routine from the DSP library:
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DSPF_sp_fftSPxSP(N, x, w, y, brev, n_min, offset, n_max)
N: the size of FFT (N=2m)
x, y: input/output (even: real, old: imaginary) with length 2N
brev: unsign characters with 64 entries (defined globally)
w: generated by another function gen_twiddle_fft_sp(w,N)
n_min: 2 or 4 (N=2m; and m is divided by 2 or 4; choose the
larger one)
– offset: index from the start of main FFT (typical 0)
– n_max: N
 Practice 3:
* After the calling, the input values may be changed
(must be defined as global var. for plotting)
– Use the build-in routine to see the spectrum of the signals
generated in Practice 2.
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 Reading assignment:
– Digital modulation: PAM, QAM (CS: 6.1-6.4)
– AWGN
* Textbooks:
– Error probability (Q-function)
CS: Communication System
S&S: Signals and Systems
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