ESP32C3 internal flash memory

[khu8rt]

Hello,
I am new to espressif and bought a devkit based on esp32 with 4MB embedded flash. i have some questions.
What type of flash is included in the SOC?
What are the maximum number of write cycles for this flash?
I cannot find example code on how to access this flash, i want to store a float value on this flash.
Thanks in advance

[lbernstone]

it is quad SPI flash
It is rated for about 10000 cycles. It is not appropriate for storing highly volatile data. It will likely work for most uses, even to the point of storing somewhat ephemeral data like authentication cookies, particularly if you use a write method with wear leveling (eg fatfs or nvs).
The Preferences library will show you some examples of storing basic keypair data.
https://github.com/espressif/arduino-es ... ounter.ino

[khu8rt]

it is quad SPI flash
It is rated for about 10000 cycles. It is not appropriate for storing highly volatile data. It will likely work for most uses, even to the point of storing somewhat ephemeral data like authentication cookies, particularly if you use a write method with wear leveling (eg fatfs or nvs).
The Preferences library will show you some examples of storing basic keypair data.
https://github.com/espressif/arduino-es ... ounter.ino

Thanks for the info, i am still not able to access this memory to store some data permanently. have any hints? there is no example included with the IDF for this task

[ESP_Sprite]

There's multiple ways to do that; if all you want to do is store a float then nvs seems to be the most applicable. Nvs has examples in the esp-idf directory if you need them. I believe the Arduino equivalent would be the 'preferences' library.

[khu8rt]

There's multiple ways to do that; if all you want to do is store a float then nvs seems to be the most applicable. Nvs has examples in the esp-idf directory if you need them. I believe the Arduino equivalent would be the 'preferences' library.

Thanks, i was able to write data and read after power loss