thank you for the reply I will check it out :D I was working on a simple code to test boot process, interrupts, vector table all that kind of stuff and I made it work. But when I was studing the wifi I run into this wifi init that need a lot of callbacks like this struct "wifi_osi_funcs_t g_wifi_osi...

Hi, im using esp8266 since 2017, and after the NON_OS_SDK_3.0.0 all my projects works fine. But I only use the precompiled files ".a" and they respective ".h" files, the rest of things I did myself as always. I need to agree with "sanpei" on the esp32 SDK, just to turn on a PIN there is so many code...