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I have an official RTOS SDK sample program of 8266. How can I import it into PIO

I downloaded the SDK based on RTOS on the official website. Now I want to import it into PIO for development and compilation. What should I do? Is there a relevant case

Due to outdated support of the ESP8266-RTOS-SDK, this is currently not possible with PlatformIO. See Outdated version of ESP8266 RTOS SDK · Issue #192 · platformio/platform-espressif8266 · GitHub.