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Sinusoidal Waveform Acquisition

LXian.19
Associate

I found an application note described about the sinusoidal wave acquisition using 10bits ADC and 2 DMA. My question is how they display the reconstructed waveform? by UART? or by DAC?

Below link is the application note AN4173

https://www.st.com/content/ccc/resource/technical/document/application_note/76/17/fe/42/d7/72/40/5c/DM00066383.pdf/files/DM00066383.pdf/jcr:content/translations/en.DM00066383.pdf

0690X000008Am1ZQAS.jpg

Thanks.

Regards,

XH Low

2 REPLIES 2
Ozone
Lead

> My question is how they display the reconstructed waveform?

You would need to ask this questions the authors of this paper. Which is for the "Power" architecture - based SPC56x family by the way, not the STM32 family.

I guess they stored a block of samples in RAM, reading it out with a debugger.

The STM32 family is surely capable of replicating said results.

> by UART?

Surely not. With 100kHz sampling period, two bytes per value, and two channels, think of the baudrate you would need.

LXian.19
Associate

Thanks Ozone.

>The STM32 family is surely capable of replicating said results.

Currently Im using NUCLEO STM32L452, but Im not sure how to display out after waveform acquired thru ADC(thru DMA). The maximum acquired frequency is 200kHz.