ESP32S3 maximum SPI slave transaction size ?

aristarchos
Posts: 20
Joined: Sat May 14, 2022 1:36 pm

ESP32S3 maximum SPI slave transaction size ?

Postby aristarchos » Fri Oct 21, 2022 7:05 pm

Hi,

Working with ESP32-S3-DevKitC-1 as SPI slave.
Need to have large size transfers, > 4096 or up to 32768 bytes.
Tried the ESP-IDF SPI slave example modified to large transfer sizes but it worked only for up to 4092 bytes per transaction.
What is the maximum SPI slave transaction size with ESP32S3 ?
Is there any ESP-IDF SPI slave example that utilizes larger than 4092 bytes transaction ?

Regards,
Aristarchow

aristarchos
Posts: 20
Joined: Sat May 14, 2022 1:36 pm

Re: ESP32S3 maximum SPI slave transaction size ?

Postby aristarchos » Fri Oct 21, 2022 8:33 pm

Just to answer my own question,
I tried to use esp32's forum search but it is not working for me at least, with plain google search though found the answer.
It seems that my question is already answered here
viewtopic.php?t=2244
after testing this, SPI transfer size can be set to really large.
Regards

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