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Example

FFT + SIN Gererator

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Author: Olexiy Bondar

Last Updated: 2017-12-06

Package Version: 1.0.0.0

Example: 1.0.0.0

Category: Internal MCU modules

Downloaded: 375 times

Not followed.

License: MIT license  

example is based on sin wave generator example:
https://libstock.mikroe.com/projects/view/2206/generating-sin-wave-by-timer-pwm-with-dma
with addind FFT(Fast Fourier Transform) to see frequency domain instead time domain on PC.

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Download

Download All [6.30MB]

DOWNLOAD LINK RELATED COMPILER CONTAINS
1509100160_fft___sin_gerera_mikroc_arm.zip [6.30MB] mikroC PRO for ARM
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Example Blog

view from Serial Plot

view from Serial Plot

Timer generates 100Hz sin wave. You can see, DC(it has most level) ,1-st hamonic(relativly to DC) and others.

View full image

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FIR(Finite impulse response) + FFT(Fast Fourier Transform)

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Finite impulse response (FIR) filters is wide using in DSP. here is examlple of low pass filter. for more information read wiki: https://en.wikipedia.org/wiki/Finite_impulse_response this exemple is based on FFT + SIN Gererator https://libstock.mikroe.com/projects/view/2207/fft-sin-gererator

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Generating Sin wave by Timer PWM with DMA

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example of generating sin wave with timer PWM by DMA and measuring it by ADC with timer triggering(sending by uart to PC). Display data on PC with SerialPlot

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Window functions + FFT

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Window function is wide using in DSP. for more information read wiki: https://en.wikipedia.org/wiki/Window_function this exemple is based on FFT + SIN Gererator https://libstock.mikroe.com/projects/view/2207/fft-sin-gererator

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