CCS/TMS320F28335: TMS320F28335

savaliya vishal

Prodigy 80 points

Part Number: TMS320F28335
Other Parts Discussed in Thread: CONTROLSUITE, C2000WARE

Tool/software: Code Composer Studio

Hi,

I'm using Code Composer Studio(CCS) 6.1.2.00015

And I find a example project called "F2833x Real FFT with ADC Input (Real-time)" from controlSUITE

Here are the example file(s) for this project: C:\ti\controlSUITE\libs\dsp\FPU\v1_40_00_00\examples_ccsv5\2833x_rfft_adc_rt

My question is, that whenevr i apply input adc chacnnelA0 then calculated fft is not proper calculated. so i dont know where is the problem.

Thanks for your help!

over 6 years ago

0 Marlyn Rosales Castaneda20 over 6 years ago

TI__Mastermind 27190 points

Hi Savaliya,

How different are the results from those expected? Have you verified you are using the correct pin for channel A0?

Best Regards,

Marlyn

0 savaliya vishal over 6 years ago in reply to Marlyn Rosales Castaneda20

Prodigy 80 points

yes Input channel is propered,I given Input of 50Hz signal but the fft result is varying according to varying voltage.

0 Sira Rao80 over 6 years ago in reply to savaliya vishal

TI__Mastermind 28135 points

Savaliya,

The FFT magnitude is expected to vary with varying input voltage.

ControlSUITE is no longer actively supported. Please use C2000Ware. The corresponding examples are in \C2000Ware_2_00_00_03\libraries\dsp\FPU\c28\examples\fft

Thanks,

Sira

0 savaliya vishal over 6 years ago in reply to Sira Rao80

Prodigy 80 points

thank you

And Another question is that where to frequency measure from code given in above thread.

0 Sira Rao80 over 6 years ago in reply to savaliya vishal

TI__Mastermind 28135 points

Assuming you are asking how to convert digital frequency to analog frequency, the bin width is fs/(2N), so the analog frequency corresponding to the kth bin is fs.k/(2N).

fs=sampling freq; N = FFT size;

Thanks,

Sira

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CCS/TMS320F28335: TMS320F28335