找了很久的ESC/POS指令集，为官方正式发布版本，为需要的朋友提供方便哈-For a long time looking for the ESC/POS command set, for the official release version, in order to facilitate the needs of friends and Kazakhstan

Espressif Systems’ Smart Connectivity Platform (ESCP) is a set of high performance, high integration wireless SOCs, designed for space and power constrained mobile platform designers.