STM32 Oscilloscope - using FFT Calculations

Oscilloscope made with an STM32 and a 320x240 QTFT screen. The oscilloscope is able to calculate the frequency too, if it's a clear sine wave!
Please visit http://elec.tkjweb.dk/blog for more information.

Category:

Science & Technology

Tags:

• STM32
• oscilloscope
• FFT
• DSP
• ARM
• QTFT
• QVGA

[cidadaomsr]

Really cool! What toolchain do you use?

[mindthomas]

@cidadaomsr GNU GCC. At that time I used the free Ride7 IDE which comes with the GNU GCC toolchain.

Though now the Ride7 IDE isn't free of charge anymore so instead I am currently using the free, Atollic TrueStudio, that is limited to ST devices only but doesn't have any code or optimization limitation.

[getson84]

this is a STM example? What is the name of it and where can i get it?

[mindthomas]

@getson84 The first part of the video is one of the ST examples, but the oscilloscope is not.

You should download the STM32 DSP Library to get started using the Fast Fourier Transform algorithm on the STM32.

You can download it here: st.com/stonline/stappl/resourc­eSelector/app?page=resourceSel­ector&doctype=FIRMWARE&SubClas­sID=1169

[mindthomas]

Sure...

You could also check ny blog in the meanwhile: elec . tkjweb . dk (remove the spaces)

[turbojohnyS]

He wrote the calculation first on the screen:P (018)

[getson84]

@mindthomas

yes thank you i found it. I didnt know that this lib is only available for the F103. I have the F107.

And nice work ;)

[jamesleetrigg]

cool! more please