Hello, is there a library available that is written in pure C? I don’t wanna use Arduino but rather than that esp open rtos, as I wan’t to combine HomeKit and Blynk at the same time. Worst case worst I can use C++ one but would prefer if there is a lib C.
As you probably noted, everything regarding Blynk hardware libraries is open sourced. You might try to rewrite existing library to pure-C 
, as I do not think you will find it ready anywhere…