Using the ADC block in Simulink with the TMS320F28027

Eric Abboud

I'm trying to set up a simple code that reads an analog voltage and will turn on an LED if it is over a certain threshold on my Piccolo launchpad f28027.

I am very new to this kind of software and hardware. I was able to write code that would blink an LED at a certain period using simulink, but have not been able to do much more than that.

First off, what family of blocks should I be using from matlab. There is no group called "F2802x" in the support package provided and I'm not sure which one to use.

Second, how should I configure the ADC block in simulink. I just want it to start reading as soon as I load the code onto my hardware and turn the led on and off accordingly.

Third, does the ADC block give a voltage or a number from 0-4096 as an output.

Thanks!

over 8 years ago

0 Brian McKay over 8 years ago

Mastermind 9005 points

Hi Eric,

If you have Embedded Coder, we have a free C2000 Support Package which includes IO device driver blocks that work in Simulink. The C2000 support package includes a library for C2802x, and these blocks should work for your F28027.

You can learn more about the support here: https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/484814

Thanks,

-Brian

0 Eric Abboud over 8 years ago in reply to Brian McKay

Prodigy 185 points

Hi Brian,
Thanks for the help! I already have the package installed, but I wasn't sure what class of blocks I was meant to be using!
Now I am still having trouble setting up the ADC block. Could you help me determine the settings I need to have it start reading values as soon as I load the program onto the target? I have seen several online tutorials discuss different sorts of SOC's but I do not know which one would be appropriate for me.

0 Gautam Iyer over 8 years ago in reply to Eric Abboud

Guru 192875 points

Hi Eric,

Here you can find the ADC configuration. Check out the detailed videos :)

Regards,

Gautam

0 Eric Abboud over 8 years ago in reply to Gautam Iyer

Prodigy 185 points

Thank you very much Gautam!
These videos were extremely clear and gave me information I haven't been able to find anywhere else

0 Gautam Iyer over 8 years ago in reply to Eric Abboud

Guru 192875 points

Thank You Eric! Just got it published :)
Your timing was good.

Goodluck & Regards,
Gautam

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Using the ADC block in Simulink with the TMS320F28027