请解释 W5100 以太网组网与配置实验温湿度数据上传乐联网程序的含义。 #include
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#define LW_USERKEY "7951cb6ce4d044eaa8f93802ca9cd989" #define LW_GATEWAY "01" byte mac[]; IPAddress ip(172,16,4,99); IPAddress mydns(221,131,143,69); IPAddress gw(172,16,4,254); IPAddress subnet(255,255,0,0); byte server[]; #define DHT11_PIN 4 EthernetClient client; void translation(void) { Serial.begin(38400); Ethernet.begin(mac, ip); delay(1000); }