esp_csi.h module/directory not found error

[irwinselvam]

Hi,

Need hgelp. I've been working on the CSI data.. Trying to capture advanced CSI data.. I've been trying to use the esp_csi.h in my firmware but it fails to build on every platform that i could try..

local machine
ESP-IDF - tried lastest as well as 5.1.6 as well offline mode.
VsCode
Arduino
Github

all of them are simply saying directory not defined or found in the build process..

how can i get rid of this? Do i have to install something to get this work?