项目描述：这是一个基于Arduino Uno R4 Wifi核心板设计的OpenPLC，Arduino Uno R4 Wifi是Arduino UNO 系列的第四代升级版本 ...
#define RUN_LED PD10 // RUN LED is inverse logic: HIGH for off, LOW for on #define RUN_PIN PB2 // RUN Switch is inverse logic: LOW is STOP Mode, HIGH is RUN Mode #ifndef MBSERIAL_TXPIN // if the TXPIN ...
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