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This function pends on the semaphore.

This function calls AIC24_start.

The Simulink block will be created from the AIC23 driver used in the “Custom Device Driver/Legacy Code Integration” Simulink demo.

  • Open the demo
    The Simulink demo for Device Driver/Legacy Code Integration
  • Open the model
Real-time model using a custom device driver
  • Double-click the "AIC23 Codec Driver" box.
  • Rename it (TLV320AIC24EVM).
  • Delete the EDMA related boxes The EDMA and interrupts configurations are handled as in the original CCS driver. .
  • Double-click the "System Start" box. Delete the code and replace it by the initialization function AIC24LINK_init () in the execution box.
  • Double-click the "System Enable". Delete the code and add the AIC24LINK_Start(), to the execution box.
  • Delete the code in the "Model Header" box.
  • Double-click the "Model Source" box. Delete the code. Add to the "Top of Model Source" box the line #include "aic24link.h". This will allow calling the functions in the aic24link.c file. Figure 17 summarizes the driver blocks configuration
    TLV320AIC24EVM driver blocks

The next steps will guide you through the “Algorithm” block configuration

  • Add 6 terminators (inputs and outputs) both inside and outside the "Algorithm" box and of course wiring them appropriately. Double click on each terminator and set its dimension to 64 The terminator dimension should match the value of the DATANUM constant in the aic24link.c file (except for the internal terminators). Set the data type to int16.The 8 input and output ports should be linked to the buffers (i.e. the pointers) in the aic24link.c file.
  • Right-click the wires connecting the terminators to the algorithm and select "Signal Properties". A new window will be opened window, Select "RealTime Workshop" tab and "ImportedExternPointer". Enter the signal name. It should have the same name of the correspondent pointers in the driver (As defined in the aic24link.c file).
  • Double-click the "Algorithm" box again and then open the "System Outputs" block. Delete the code and add a call to AIC24LINK_wait. This way the loop of the task stops each time and waits for the data.
    The “Algorithm” block

The model is now ready to generate real-time code for processing of 4 audio channels. AN example is shown in the next chapter.

The audio conference bridge application

This chapter illustrates the use of the Simulink driver introduced in the previous chapter, to implement a conference bridge.

Figure 15 shows the configuration used for this application. Three headsets The TLV320AIC24 contains three analog interfaces for headsets. The use of an additional channel requires minor hardware changes in the board. are used, enabling a 3-port conference. The DSP monitors the 3 input signals, and routes the “loudest” input signal to the three outputs. The algorithm is described in the next section.

System Configuration

The algorithm

The Algorithm (Block Diagram)

The algorithm processes 64 samples (each channel). It calculates the absolute power of each channel (sum of absolute values). Three counters are used, each one corresponding to a distinct channel.

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, From matlab and simulink to real-time with ti dsp's. OpenStax CNX. Jun 08, 2009 Download for free at http://cnx.org/content/col10713/1.1
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