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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

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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