1. TigerSHARC processor and evaluation board
Different capabilities Different functionality

2. Concepts tackled
Differences between “processor” and “evaluation board”
Functionality present of TigerSHARC evaluation board
Accessing the A2D and D2A in an easy way – needed for all Labs.
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

3. Evaluation board – P0 and P1
TWO TS201S processors
Error messages about P0 and P1 mean code on specific
processor
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

4. Evaluation board – Link Ports
Designed for “star”
Configuration –
Up to 8 processors working together
P0 to P7 (selectable by switches on back of evaluation board (Never tried – Don’t destroy link ports)
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

5. Audio connectors. Max input voltage around 1 V p-p with no DC.
Too great a voltage destroys the board
Use MPEG or other players and keep
Volume down
Damage and distortion issues
JTAG ONLY AVALIABLE IN 3rd floor labs
Higher speed communication rates than USB (factor of )
ICT320 TigerSHARC
ICT318 Blackfin (some stations).
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

6. Buttons and LEDs split between processors
Much “stuff” on the board shared between processors (but NOT all)
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

7. Evaluation Board ArchitectureP0 P1
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

8. Processors can share memory
allocation depends on ID #
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

9. Note – labelled processor A and B rather than processor 0 and 1
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

10. Note – labelled processor A and B rather than processor 0 and 1
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

11. How to use the evaluation board capability
Read a lot in the hardware manual
Modify some of the example programs provided in
C:\Program Files\Analog Devices\VisualDSP Bit\TS\EZ-KITs
and then Read a lot in the hardware manual
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

12. Laboratory 1 Part 2
This makes use of the analog to digital converter and the digital to analogue converter to provide audio sound signals that we can process with the high speed algorithms we develop during the course
We will need to learn about
Interrupts – which, how many, why, how?
A2D, D2A – which, how many, why, how?
We need to learn about all this stuff before the end of the course – but not now – Now we just want to use it
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

13. ECE-ADI-Project
Was asked to develop (as part of Analog Devices University Ambassadorship) to develop demonstration programs and place on the web
Have now developed
SHARC – ADSP (Previous 515)
Audio project utilities
Blackfin – ADSP-BF533 (Current ENCM415 Lec. 01)
Audio project utilities, Video Project utilities
TigerSHARC – ADSP-TS201 (Current ENCM515)
Embedded Test Driven Development Environment (E-TDD)
Blackfin, TigerSHARC, SHARC, Microsoft studio
Find at ECE-ADI-Project/Index/index.htm
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

14. Using the code Files need – See Lab. 1 Part 2
You will need to build a project file Audio.dpj
Also link in you code from assignment 1 -- myAssignment1.cpp
05Labs/05FilesNeeded/05Lab1AudioProject/KnownLocation1Nov04.cpp
05Labs/05FilesNeeded/05Lab1AudioProject/main_Sound1Jan05.cpp
05Labs/05FilesNeeded/05Lab1AudioProject/processsound1Jan05.cpp
05Labs/05FilesNeeded/05Lab1AudioProject/examinesignal.cpp
05Labs/05FilesNeeded/05Lab1AudioProject/processorspecific1Nov04.h
05Labs/05FilesNeeded/05Lab1AudioProject/soundsourceClass1Nov04.h
05Labs/05FilesNeeded/05Lab1AudioProject/student_adiprocessor1Jan05.h
05Labs/05FilesNeeded/05Lab1AudioProject/TS201OnlineLib1Jan05_CHAR8.dlb
05Labs/05FilesNeeded/05Lab1AudioProject/TSXXXprocessorspecific1Nov04.h
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

15. ADISoundSource sounddemo(processor, which_soundsource, processing_options);
Does all the hard stuff
Sets up interrupts
Sets up interrupt service routine
Sets up variety of options
Useful things to know
which__soundsource = LOCAL_AUDIOSOURCE | MONO"; Generate a local sound source – output D2A
which__soundsource = CODEC_AUDIOSOURCE | MONO"; Uses the CODEC as sound source – input A2D and output A2D
processing_options allow you to switch quickly between a variety of versions of functions (Probably not used this year as the E-TDD environment does a better job
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

16. sounddemo.ReadSource(&channel1_in, &channel2_in)
Provides the input sound signal from the two channels of the A/D
This function will “wait” for an audio interrupt to place the A2D values into a known location, and then returns those values to you
In LOCAL_AUDIOSOURCE mode, This function will “wait” for an audio interrupt then return audio samples from an internal generated tune.
Note – if your code to process the audio signal is too slowly, then an interrupt (or many interrupts) will have already occurred, and ReadSource( ) will return immediately. There is NO WAY to recover missed samples. You will hear sound distortion if many samples are missed
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

17. sounddemo.WriteSource(leftchannel_out, rightchannel_out);
WriteSource( ) simply places your values into a known location. When an interrupt occurs, these values will be sent to the D2A automatically.
NOTE there is no check to see whether the previous values have been sent to the D2A. Therefore we need to write code of the form
while (ReadSource (&left, &Right)) {
ProcessSound(&left, &right);
WriteSource(left, right); }
WriteSource( ) will be used during Lab. 1 Part 1
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

18. VolumeControl(&channel1_in, &channel2_in, &sounddemo);
You will need earphones for the labs.
WARNING: - Depending on the quality of your ear-phones, and the quality of your coding, it is very simply to have a sound that is too loud and potentially damaging to your ears. DON’T start running the code with the ear-phones on your ears. Run the code, adjust the volume, and then place the earphones on your ears
VolumeControl( ) is a simply way of adjusting the output sound volume
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

19. Interrupt Handling sounddemo.Stop_AudioInterrupts( );
Your code here
sounddemo.Start_AudioInterrupts( );
You can’t single step (debug) your code when the interrupts are running.
Note – these functions are not working at the moment on the TigerSHARC.
However this is not a real issue as the Test Driven Development environment provides an easier way to test your code without the necessity of having interrupts
Once your functions have been proven to work (e.g. Lab. 1, Part 1), then you can add them to the audio program (e.g. Lab. 1, Part 2).
If your code is so bad that you have to single step through it – then consider using the equivalent of rm *.* and start again
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

20. Is anything actually happening?
if (!sounddemo.DoNotProcess())
ProcessSound(channel1_in, channel2_in, &leftchannel_out, &rightchannel_out, &sounddemo);
else {
leftchannel_out = channel1_in; rightchannel_out = channel2_in; }
By pressing button FLAG1 you can cause the sound to be passed directly to the audio output without processing (e.g. Lab. 1 Tutorial 1)
Since the evaluation board has two processors then you will need to use FLAG1-A or FLAG1-B depending on which processor your code is running
Note – loading the code, holding FLAG1 down while the code starts up automatically switches between LOCAL and CODEC input modes, so you can switch without having to recompile each time
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

21. Software radio part of Lab 1 Modified main( )
int main () {
// int source_selection = AUDIO_SOURCE_DEMO;
int source_selection INTERNAL_SOFTWARE_RADIO_SOURCE_DEMO;
if (source_selection == AUDIO_SOURCE_DEMO)
AudioSourceDemo( );
else if (source_selection == INTERNAL_SOFTWARE_RADIO_SOURCE_DEMO)
InternalSoftwareRadioSourceDemo( );
else {
puts ("Unknown source selection"); }
return 0;
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

22. Software Radio Demo while (WaitAMSignal(&AMsignal, &sounddemo)) {
if (!sounddemo.DoNotProcess()) {
ExamineSignal(AMsignal, 0, 4000); // Incoming signal
// Choose which "radio station" you want to hear
// MultiplyByReference(&AMsignal, carrier_frequency[0]);
// ExamineSignal(AMsignal, 0, 4000);
// IFstage_low_pass_filter(&AMsignal, filter_coefficients, FILTER_LENGTH);
// RectifySignal(&channel1_in, &channel2_in, AMsignal);
// ExamineSignal(channel1_in, 0, 4000);
// Audio_low_pass_filter(channel1_in, channel2_in, &leftchannel_out,
// &rightchannel_out, filter_coefficients, filter_coefficients, FILTER_LENGTH);
// ExamineSignal(leftchannel_out, 0, 4000);
// DCremoval(&leftchannel_out, &rightchannel_out); }
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

23. Software Radio Demo while (WaitAMSignal(&AMsignal, &sounddemo)) {
if (!sounddemo.DoNotProcess()) {
// ExamineSignal(AMsignal, 0, 4000); // Incoming signal
// Choose which "radio station" you want to hear
MultiplyByReference(&AMsignal, carrier_frequency[0]);
ExamineSignal(AMsignal, 0, 4000);
// IFstage_low_pass_filter(&AMsignal, filter_coefficients, FILTER_LENGTH);
// ExamineSignal(AMsignal, 0, 4000);
// RectifySignal(&channel1_in, &channel2_in, AMsignal);
// ExamineSignal(channel1_in, 0, 4000);
// Audio_low_pass_filter(channel1_in, channel2_in, &leftchannel_out,
// &rightchannel_out, filter_coefficients, filter_coefficients, FILTER_LENGTH);
// ExamineSignal(leftchannel_out, 0, 4000);
// DCremoval(&leftchannel_out, &rightchannel_out); }
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

24. Software Radio Demo while (WaitAMSignal(&AMsignal, &sounddemo)) {
if (!sounddemo.DoNotProcess()) {
// ExamineSignal(AMsignal, 0, 4000); // Incoming signal
// Choose which "radio station" you want to hear
MultiplyByReference(&AMsignal, carrier_frequency[0]);
// ExamineSignal(AMsignal, 0, 4000);
IFstage_low_pass_filter(&AMsignal, filter_coefficients, FILTER_LENGTH);
ExamineSignal(AMsignal, 0, 4000);
// RectifySignal(&channel1_in, &channel2_in, AMsignal);
// ExamineSignal(channel1_in, 0, 4000);
// Audio_low_pass_filter(channel1_in, channel2_in, &leftchannel_out,
// &rightchannel_out, filter_coefficients, filter_coefficients, FILTER_LENGTH);
// ExamineSignal(leftchannel_out, 0, 4000);
// DCremoval(&leftchannel_out, &rightchannel_out); }
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

25. Software Radio Demo while (WaitAMSignal(&AMsignal, &sounddemo)) {
if (!sounddemo.DoNotProcess()) {
// ExamineSignal(AMsignal, 0, 4000); // Incoming signal
// Choose which "radio station" you want to hear
MultiplyByReference(&AMsignal, carrier_frequency[0]);
// ExamineSignal(AMsignal, 0, 4000);
IFstage_low_pass_filter(&AMsignal, filter_coefficients, FILTER_LENGTH);
RectifySignal(&channel1_in, &channel2_in, AMsignal);
// ExamineSignal(channel1_in, 0, 4000);
Audio_low_pass_filter(channel1_in, channel2_in, &leftchannel_out,
&rightchannel_out, filter_coefficients, filter_coefficients, FILTER_LENGTH);
ExamineSignal(leftchannel_out, 0, 4000);
// DCremoval(&leftchannel_out, &rightchannel_out);
// ExamineSignal(leftchannel_out, 0, 4000); }
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

26. Software Radio Demo while (WaitAMSignal(&AMsignal, &sounddemo)) {
if (!sounddemo.DoNotProcess()) {
// ExamineSignal(AMsignal, 0, 4000); // Incoming signal
// Choose which "radio station" you want to hear
MultiplyByReference(&AMsignal, carrier_frequency[0]);
// ExamineSignal(AMsignal, 0, 4000);
IFstage_low_pass_filter(&AMsignal, filter_coefficients, FILTER_LENGTH);
RectifySignal(&channel1_in, &channel2_in, AMsignal);
// ExamineSignal(channel1_in, 0, 4000);
Audio_low_pass_filter(channel1_in, channel2_in, &leftchannel_out,
&rightchannel_out, filter_coefficients, filter_coefficients, FILTER_LENGTH);
// ExamineSignal(leftchannel_out, 0, 4000);
DCremoval(&leftchannel_out, &rightchannel_out);
ExamineSignal(leftchannel_out, 0, 4000); }
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada

27. Concepts tackled
Differences between “processor” and “evaluation board”
Functionality present of TigerSHARC evaluation board
Accessing the A2D and D2A in an easy way – needed for all Labs.
12/8/2018
TigerSHARC Evaluation Board, M. Smith, ECE, University of Calgary, Canada