ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

ThomasESP32
Posts: 191
Joined: Thu Jul 14, 2022 5:15 am

ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ThomasESP32 » Fri Feb 03, 2023 8:11 am

Good Morning,

I am working on a ESP32-S3-WROOM1 N8 module and I would like to know the type of SPI Flash that is embedded in
the module ?

I am wondering if it is NOR Flash, NAN Flash ?
And I am wondering what is the difference between this flash memory and flash memory that we can find in
micro SD Memory Card ?

Thank you for your help,
Best regards,

Thomas TRUILHE

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ESP_Sprite » Fri Feb 03, 2023 1:20 pm

Currently, ESP chips can only boot from NOR flash. The difference between it and e.g. a SD card is that SD cards have an entirely different interface, tend to be much larger, and usually consist of NAND flash with an ASIC that acts as a translation layer to do wear leveling and error correction.

ThomasESP32
Posts: 191
Joined: Thu Jul 14, 2022 5:15 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ThomasESP32 » Fri Feb 03, 2023 3:12 pm

Thank you for your answer,


and is it possible using librairies to mount a Filesystem on the 8Mo internal NOR Flash ?


Best regards,

Thomas TRUILHE

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ESP_Sprite » Sat Feb 04, 2023 12:41 am

Yes. There's FAT, spiffs and littlefs, for example.

ThomasESP32
Posts: 191
Joined: Thu Jul 14, 2022 5:15 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ThomasESP32 » Sat Feb 04, 2023 2:55 pm

Where can i find an example on how to use fatfs in order to mount a filesys on the internan flash. I have done it on an external flash but i dont know the parameters to use for internal flash of the wroom module.
Cpuld you help ?
The same question for the other filsys you mentionned please.
Best regards

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ESP_Sprite » Sun Feb 05, 2023 1:38 am

The ESP-IDF examples directory tends to have examples for these kinds of things, e.g. a fatfs example would be here.

ThomasESP32
Posts: 191
Joined: Thu Jul 14, 2022 5:15 am

Re: ESP32-S3-WROOM1 : Type of SPI Flash embedded ?

Postby ThomasESP32 » Mon Feb 06, 2023 5:17 pm

Could y ou confirm that this example can be used with the embedded Flash of the WROOM module ?

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