[SOLVED] How to generate a sine waveform using a STM32 Nucleo-64?

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EltonBrasil

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Hello Everyone,

I have a STM32F446 Nucleo-64 and I want to generate a sine waveform at 13.56 MHz. I would like to know if there is available code in which I can set the sine wave frequency.

Many thanks in advance.
 

You're going to have a pretty rough sinewave since the maximum sampling frequency you can have is 48MHz. (Not even sure if the onboard DAC can run at the frequency).
 
barry said:
You're going to have a pretty rough sinewave since the maximum sampling frequency you can have is 48MHz. (Not even sure if the onboard DAC can run at the frequency).
Click to expand...

I gotta. Well, a FPGA looks better for my application. Thanks much.
 

Sine wave, how? Generating a square wave and applying a low pass filter?

For 13.56 MHz, you need a suitable crystal that can generate the frequency by rational operations. Near to 13.56 MHz can be possibly achieved by unusual PLL programming, you can try out with the CubeMX tool.

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Not even sure if the onboard DAC can run at the frequency
Click to expand...
Definitely not, 1 MHz DAC small signal bandwidth.
 

You can also generate a sinewave with a lookup table and counter (DDS). You don't have to use rational functions. But that 1MHz DAC will be a problem...
 
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