USB ESP32-S3

[baotd_innova]

Hi all,

I'm facing some issues with the ESP32-S3:

- Has Espressif ever tested the USB C CDC write/read speed?
- Has Espressif tested the MSC speed with eMMC?
- I'm using an ESP32-S3 connected to an EMMC04G-MK27-A01C. The write speed is 3.7MB/s and the read speed is 11.4MB/s. I'm not sure if this is the optimal speed.
- When testing MSC file copy, the write speed is 0.5MB/s and the read speed is 0.7MB/s. I need to know if this is the best speed possible. My application requires better write/read speeds.

Thanks for your support.

Best Regards,
Bao Doan.

[aliarifat794]

Use larger buffers for data transfer to reduce the number of interruptions and context switches.

[baotd_innova]

Hi, aliarifat794. Can you provide an example of using large buffers? I'm using an ESP32S3 with 2MB of PSRAM.