How to know free flash memory in running programme in esp32?

[dhananjay.sutariya]

I'm trying to get the avalaible flash memory after writing into the flash through nvs api's . I'm aware of the spi_flash_get_chip_size api. aslo mmap_get_free_page api but that will not work as far as my understanding goes .Please help.

[WiFive]

https://docs.espressif.com/projects/esp ... vs_stats_t

[dhananjay.sutariya]

Hi.. ,
i actually want the number of bytes that are still available to write from the 4MB of flash after my application program has been flashed.

[WiFive]

https://docs.espressif.com/projects/esp ... ables.html

It depends, you should create a separate partition to store data.