refactor: refactored by pvs-studio

.gitignore

@@ -2,4 +2,5 @@
 .DS_Store
 build
 sdkconfig.old
-desktop.ini
+desktop.ini
+.PVS-Studio

README.md

@@ -4,6 +4,10 @@
 
 1. [ESP32 ESP-IDF v5.5.1](https://docs.espressif.com/projects/esp-idf/en/v5.5.1/esp32/index.html)
 
+## SAST Tools
+
+[PVS-Studio](https://pvs-studio.com/pvs-studio/?utm_source=website&utm_medium=github&utm_campaign=open_source) - static analyzer for C, C++, C#, and Java code.
+
 ## Build and flash
 
 Run the following command to firmware build and flash module: