High output frequency from DAC

[mala]

Split from https://community.st.com/t5/stm32cubeide-mcus/problem-with-file-ioc-quot-not-a-valid-ioc-file-quot/td-p/791325 as this is a new question

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But now, I have another question. The file I use is one of the example on stm32G431RB "DAC_SignalGeneration2" and for this example, the output frequency on Oscillo is 1kHz but for my use, I want to have high frequency for sinusoidal signal on oscilloscope. I try many issu but i don't have what i want.

 

For example, I calculated PSC et ARR corresponding to my frequency i want or double the number of step in tab sinewave or do (programmed a specific tab sinwave at the frequency i want but i stil don't have good result on oscilloscope. 

And i don't understand the specific roles of each timer (TIM2 & TIM6) in this code.

Thank you for you respond

[mala]

STM32CubeG4/Projects/NUCLEO-G431RB/Examples/DAC/DAC_SignalsGeneration2/Src/main.c at master · STMicroelectronics/STM32CubeG4 · GitHub

[mala]

Duplicate - merged.

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I change the file. But now, I have anathor question. The file I use is one of the example on stm32G431RB "DAC_SignalGeneration2" and for this example, the output frequency on Oscillo is 1kHz but for my use, I want to have high frequency for sinusoidal signal on oscilloscope. I try many issu but i don't have what i want.

 

For example, I calculated PSC et ARR corresponding to my frequency i want or double the number of step in tab sinewave or do (programmed a specific tab sinwave at the frequency i want but i stil don't have good result on oscilloscope. 

And i don't understand the specific roles of each timer (TIM2 & TIM6) in this code.

Thank you for you respond

 

STM32CubeG4/Projects/NUCLEO-G431RB/Examples/DAC/DAC_SignalsGeneration2/Src/main.c at master · STMicroelectronics/STM32CubeG4 · GitHub

[Andrew Neil]

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@mala wrote:

for my use, I want to have high frequency for sinusoidal signal on oscilloscope

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How high ?

 

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@mala wrote:

i stil don't have good result on oscilloscope. 

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In what way(s) is it "not" good ?

Perhaps show a screenshot from your oscilloscope

And show the code you used.

[mƎALLEm]

Hello, FYI,

From the datasheet:

DAC at 1MSPS: 

DAC at 15MSPS: