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[LV.6]常住居民II
本帖最后由 敢问路在何方 于 2016-7-1 21:34 编辑 //互联网时间获取 #include "ESP8266.h" #include <SoftwareSerial.h> #define SSID "这里输入你家的wifi名称" #define PASSWORD "你家wifi密码" #define HOST_NAME "ntp.sjtu.edu.cn"//互联网授时服务器 #define HOST_PORT (123) //端口为123 //SoftwareSerial mySerial(10,11); // RX, TX，使用MEGA2560的软串 SoftwareSerial mySerial(2,3); // RX, TX，使用NANO的软串 ESP8266 wifi(mySerial,115200);//使用软串 //ESP8266 wifi(Serial1,115200);//使用MEGA2560的硬串1，19、18脚 const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message int i; void setup(void) { Serial.begin(115200); Serial.print("setup begin\r\n"); Serial.print("FW Version: "); Serial.println(wifi.getVersion().c_str()); if (wifi.setOprToStationSoftAP()) { Serial.print("to station + softap ok\r\n"); } else { Serial.print("to station + softap err\r\n"); } if (wifi.joinAP(SSID, PASSWORD)) { Serial.print("Join AP success\r\n"); Serial.print("IP: "); Serial.println(wifi.getLocalIP().c_str()); } else { Serial.print("Join AP failure\r\n"); } if (wifi.disableMUX()) { Serial.print("single ok\r\n"); } else { Serial.print("single err\r\n"); } Serial.print("setup end\r\n"); } void loop(void) { // send an NTP request to the time server at the given address //unsigned long sendNTPpacket() // set all bytes in the buffer to 0 uint8_t packetBuffer[NTP_PACKET_SIZE] = {0}; // Initialize values needed to form NTP request // (see URL above for details on the packets) //Serial.println("2"); packetBuffer[0] = 0b11100011; // LI, Version, Mode packetBuffer[1] = 0; // Stratum, or type of clock packetBuffer[2] = 6; // Polling Interval packetBuffer[3] = 0xEC; // Peer Clock Precision // 8 bytes of zero for Root Delay & Root Dispersion packetBuffer[12] = 49; packetBuffer[13] = 0x4E; packetBuffer[14] = 49; packetBuffer[15] = 52; if (wifi.registerUDP(HOST_NAME,HOST_PORT)) { Serial.print("register udp ok\r\n"); } else { Serial.print("register udp err\r\n"); } wifi.send((const uint8_t*)packetBuffer, NTP_PACKET_SIZE); uint32_t len = wifi.recv(packetBuffer, NTP_PACKET_SIZE, 10000); if (len > 0) { //the timestamp starts at byte 40 of the received packet and is four bytes, // or two words, long. First, esxtract the two words: unsigned long highWord = word(packetBuffer[40], packetBuffer[41]); unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]); // combine the four bytes (two words) into a long integer // this is NTP time (seconds since Jan 1 1900): unsigned long secsSince1900 = highWord << 16 | lowWord; Serial.print("Seconds since Jan 1 1900 = " ); Serial.println(secsSince1900); // now convert NTP time into everyday time: Serial.print("Unix time = "); // Unix time starts on Jan 1 1970. In seconds, that's 2208988800: const unsigned long seventyYears = 2208988800UL; // subtract seventy years: unsigned long epoch = secsSince1900 - seventyYears + 8 * 3600; // print Unix time: Serial.println(epoch); // print the hour, minute and second: Serial.print("The Beijing time is "); // UTC is the time at Greenwich Meridian (GMT) Serial.print((epoch % 86400L) / 3600 ); // print the hour (86400 equals secs per day) Serial.print(':'); if ( ((epoch % 3600) / 60) < 10 ) { // In the first 10 minutes of each hour, we'll want a leading '0' Serial.print('0'); } Serial.print((epoch % 3600) / 60); // print the minute (3600 equals secs per minute) Serial.print(':'); if ( (epoch % 60) < 10 ) { // In the first 10 seconds of each minute, we'll want a leading '0' Serial.print('0'); } Serial.println(epoch % 60); // print the second } else { Serial.println("received failure"); } if (wifi.unregisterUDP()) { Serial.print("unregister udp ok\r\n"); } else { Serial.print("unregister udp err\r\n"); } delay(5000); } 复制代码
发表于 2016-6-30 16:10
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