[问答]

4个Wemos D1 mini使用DS18B20温度传感器向树莓派上的MYSQL数据库报告的问题求解

问答对人有帮助，内容完整，我也想知道答案 0 我有 4 个 Wemos D1 mini 使用 DS18B20 温度传感器，它们向我的树莓派上的 MYSQL 数据库报告。自去年 10 月（2017 年）以来，这已经成功地每 15 分钟报告一次，但我想包括 OTA，因为它们很难到达地方和每个传感器的网页。我现在有 1 个 wemos d1 mini 在处理旧脚本，但我尝试重新配置的 3 个存在以下问题最初 NTP 时间已经停止，而不是仅在过去的 00、15、30 和 45 分钟报告和上传温度到 MYSQL 数据库。然后，从我更改代码后打开电源开始，它开始每 15 分钟更新一次。这现在已经完全停止工作并报告 ntp 的 ip 地址为 0.0.0.0 并且没有任何更新到 MYSQL 数据库网络服务器工作并成功报告温度代码：全选// Including the ESP8266 WiFi library #include <timeLib.h> #include #include #include #include #include #include #include // Replace with your network details // WiFi char ssid[] = "Wifi"; // SSID NAME char password[] = "Wifi-Password"; // SSID PASSWORD // NTP Servers: static const char ntpServerName[] = "0.uk.pool.ntp.org"; const int timeZone = 1; WiFiUDP Udp; unsigned int localPort = 8888; time_t getNtpTime(); void sendNTPpacket(IPAddress &address); WiFiClient client; MySQL_Connection conn((Client )&client); // Data wire is plugged into pin D1 on the ESP8266 12-E - GPIO 5 #define ONE_WIRE_BUS 2 // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs) OneWire oneWire(ONE_WIRE_BUS); DallasTemperature sensors(&oneWire); // Pass our oneWire reference to Dallas Temperature. DallasTemperature DS18B20(&oneWire); char temperatureCString[7]; char temperatureFString[7]; // MySQL IPAddress server_addr(192,168,0,15); char user[] = "sensors"; char pass[] = "SensorsPassword"; char INSERT_DATA[] = "UPDATE sensors.thermostat SET TheTemp = %s, TheUpdated = NOW() WHERE TheLocation = 'Top Bedroom'"; char INSERT_DATA_HISTORY[] = "INSERT INTO sensors.history (HisDate, HisThermostat, HisTemp) VALUES (NOW(),'3',%s)"; char query[128]; char query_HISTORY[128]; char temperature[10]; char temperature_HISTORY[10]; // Web Server on port 80 WiFiServer server(80); // only runs once on boot void setup() { // Initializing serial port for debugging purposes Serial.begin(115200); delay(10); //.30 = Room1 .31 = Room2 .32 = Top Bedroom .33 = Outside IPAddress ip(192, 168, 0, 32); IPAddress subnet(255, 255, 255, 0); IPAddress gt(192, 168, 0, 1); WiFi.config(ip, gt, subnet); WiFi.hostname("Top-Room-Temp-Sensor"); DS18B20.begin(); // IC Default 9 bit. If you have troubles consider upping it 12. Ups the delay giving the IC more time to process the temperature measurement // Connecting to WiFi network Serial.println(); Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); Udp.begin(localPort); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); // Starting the web server server.begin(); Serial.println("Web server running. Waiting for the ESP IP..."); delay(10000); // Printing the ESP IP address Serial.println(WiFi.localIP()); Udp.begin(localPort); setSyncProvider(getNtpTime); setSyncInterval(300); } void saveTempData() { if (((minute() == 0) \|\| (minute() ==15) \|\| (minute() ==30) \|\| (minute() ==45)) && (second() == 0)) { //if (((now.minute() == 0) \|\| (now.minute() ==15) \|\| (now.minute() ==30) \|\| (now.minute() ==45)) && (now.second() == 0)) { // if ( minute() == 00 && second() == 00 ) { sensors.requestTemperatures(); MySQL_Cursor cur_mem = new MySQL_Cursor(&conn); Serial.print("Temp : "); Serial.println(sensors.getTemPCByIndex(0)); Serial.print("Query : "); dtostrf(sensors.getTempCByIndex(0), 2, 2, temperature); dtostrf(sensors.getTempCByIndex(0), 2, 2, temperature_HISTORY); sprintf(query, INSERT_DATA,temperature); sprintf(query_HISTORY, INSERT_DATA_HISTORY,temperature_HISTORY); cur_mem->execute(query); cur_mem->execute(query_HISTORY); Serial.println(query); Serial.println(query_HISTORY); delete cur_mem; Serial.println("Data stored!"); } } void getTemperature() { float tempC; float tempF; do { DS18B20.requestTemperatures(); tempC = DS18B20.getTempCByIndex(0); dtostrf(tempC, 2, 2, temperatureCString); tempF = DS18B20.getTempFByIndex(0); dtostrf(tempF, 3, 2, temperatureFString); delay(100); } while (tempC == 85.0 \|\| tempC == (-127.0)); } time_t prevDisplay = 0; // when the digital clock was displayed // runs over and over again void loop() { saveTempData(); // Listenning for new clients WiFiClient client = server.available(); if (client) { Serial.println("New client"); // bolean to locate when the http request ends boolean blank_line = true; while (client.connected()) { if (client.available()) { char c = client.read(); if (c == 'n' && blank_line) { getTemperature(); client.println("HTTP/1.1 200 OK"); client.println("Content-Type: text/html"); client.println("Connection: close"); client.println(); // your actual web page that displays temperature client.println(""); client.println(""); client.println(" Nytram Top Bedroom - Temperature Temperature in Celsius: "); client.println(temperatureCString); client.println("C Temperature in Fahrenheit: "); client.println(temperatureFString); client.println("F "); break; } if (c == 'n') { // when starts reading a new line blank_line = true; } else if (c != 'r') { // when finds a character on the current line blank_line = false; } } } // closing the client connection delay(1); client.stop(); Serial.println("Client disconnected."); } } /-------- NTP code ----------/ const int NTP_PACKET_SIZE = 48; // NTP time is in the first 48 bytes of message byte packetBuffer[NTP_PACKET_SIZE]; //buffer to hold incoming & outgoing packets time_t getNtpTime() { IPAddress ntpServerIP; // NTP server's ip address while (Udp.parsePacket() > 0) ; // discard any previously received packets Serial.println("Transmit NTP Request"); // get a random server from the pool WiFi.hostByName(ntpServerName, ntpServerIP); Serial.print(ntpServerName); Serial.print(": "); Serial.println(ntpServerIP); sendNTPpacket(ntpServerIP); uint32_t beginWait = millis(); while (millis() - beginWait < 1500) { int size = Udp.parsePacket(); if (size >= NTP_PACKET_SIZE) { Serial.println("Receive NTP Response"); Udp.read(packetBuffer, NTP_PACKET_SIZE); // read packet into the buffer unsigned long secsSince1900; // convert four bytes starting at location 40 to a long integer secsSince1900 = (unsigned long)packetBuffer[40] << 24; secsSince1900 \|= (unsigned long)packetBuffer[41] << 16; secsSince1900 \|= (unsigned long)packetBuffer[42] << 8; secsSince1900 \|= (unsigned long)packetBuffer[43]; return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR; } } Serial.println("No NTP Response :-("); return 0; // return 0 if unable to get the time } // send an NTP request to the time server at the given address void sendNTPpacket(IPAddress &address) { // set all bytes in the buffer to 0 memset(packetBuffer, 0, NTP_PACKET_SIZE); // Initialize values needed to form NTP request // (see URL above for details on the packets) 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; // all NTP fields have been given values, now // you can send a packet requesting a timestamp: //Udp.beginPacket(address, 123); //NTP requests are to port 123 Udp.write(packetBuffer, NTP_PACKET_SIZE); Udp.endPacket(); } 请有人能指出我正确的方向吗？ 0
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