any compensate to use ESP32S3 for wave generate and shown?

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lladam
Posts: 44
Joined: Tue Jul 20, 2021 12:14 am

any compensate to use ESP32S3 for wave generate and shown?

Postby lladam » Wed Apr 19, 2023 9:55 pm

Hi all.
the ESP32 S3 don't have a DAC, is it possible to use it to generate waves like sine wave? or shown wave like a oscilloscope?
Thanks
Adam
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ESP_Sprite
Posts: 9708
Joined: Thu Nov 26, 2015 4:08 am

Re: any compensate to use ESP32S3 for wave generate and shown?

Postby ESP_Sprite » Thu Apr 20, 2023 2:31 am

You can put the I2S peripheral into PDM mode, then use a simple RC filter to smooth out the pulses.
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lladam
Posts: 44
Joined: Tue Jul 20, 2021 12:14 am

Re: any compensate to use ESP32S3 for wave generate and shown?

Postby lladam » Thu Apr 20, 2023 4:06 pm

Thanks.
Are there any examples? at least got better result one?
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