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ESP-Weather
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added ESP8266 arduino project

g40st 7 years ago
parent
7f2b3b0e70
commit
b4b708332c
2 changed files with 325 additions and 2 deletions
Split View Show Diff Stats
  1. 3
    2
      js/script.js
  2. 322
    0
      sysAdmin/sysAdmin.ino

+ 3
- 2
js/script.js View File 

@@ -157,10 +157,11 @@ function generateGraph(flag, sensor, actTime) {
157 157 
             tmpDataTemperature.push(tmp.actualTemp);
158 158 
             tmpDataHumidity.push(tmp.actualHum);
159 159
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+            var lineColor = getRandomColor();
160 161 
             dataTemperature.push({label: "Sensor " + tmp.id, data: tmpDataTemperature, fill: false,
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-                borderWidth: 3, borderColor : getRandomColor(),});
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+                borderWidth: 3, borderColor : lineColor,});
162 163 
             dataHumidity.push({label: "Sensor " + tmp.id, data: tmpDataHumidity, fill: false,
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-                borderWidth: 3, borderColor : getRandomColor(),});
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+                borderWidth: 3, borderColor : lineColor,});
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             tmpDataTemperature = [];
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             tmpDataHumidity = [];

+ 322
- 0
sysAdmin/sysAdmin.ino View File 

@@ -0,0 +1,322 @@
1 
+#include <ESP8266WiFi.h>
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+#include <WiFiClient.h>
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+#include <ESP8266WebServer.h>
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+#include <WiFiUdp.h>
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+#include "SHT21.h"
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+#include <vector>
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+#include <WebSocketServer.h>
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+#include <WiFiServer.h>
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+#include <EEPROM.h>
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+
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+#define NTP_PORT 2392
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+#define MAX_WAIT_TIME 550
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+#define EEPROM_SIZE 512
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+
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+// NTP-Client
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+IPAddress timeServerIP;
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+const char* ntpServerName = "time.nist.gov";
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+const int NTP_PACKET_SIZE = 48;
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+byte ntpPacketBuffer[NTP_PACKET_SIZE];
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+WiFiUDP ntp;
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+unsigned long timestamp = 0;
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+unsigned long timeReceived = 0;
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+unsigned long lastStorageTime = 0;
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+byte storeAtBoot = 1;
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+unsigned long lastNTP = 0;
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+
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+SHT21 SHT21;
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+ESP8266WebServer server(80);
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+WiFiServer serverSocket(2391);
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+WebSocketServer webSocketServer;
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+
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+const char* ssid = "SysadminWLAN";
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+const char* password = "sysadmin";
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+IPAddress broadcastIP;
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+
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+struct __attribute__((__packed__)) Measurement {
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+  float temperature;
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+  float humidity;
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+};
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+
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+struct __attribute__((__packed__)) Header {
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+  uint8_t count;
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+  uint16_t checksum;
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+};
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+
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+#define MAX_STORAGE (EEPROM_SIZE - sizeof(Header)) / sizeof(Measurement)
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+
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+struct __attribute__((__packed__)) PersistentStorage {
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+  Measurement data[MAX_STORAGE];
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+  Header header;
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+};
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+
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+PersistentStorage storage;
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+
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+void writeMemory(PersistentStorage &s) {
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+  Serial.println("write Memory");
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+  unsigned char* r = (unsigned char*) &s;
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+  uint16_t a = 0, b = 0;
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+  for(int i = 0; i < sizeof(PersistentStorage) - 2; i++) {
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+    a = (a + r[i]) % 255;
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+    b = (b + a) % 255;
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+  }
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+  s.header.checksum = (b << 8) | a;
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+  for(int i = 0; i < sizeof(PersistentStorage); i++) {
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+    EEPROM.write(i, r[i]);
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+  }
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+  EEPROM.commit();
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+}
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+
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+PersistentStorage readMemory() {
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+  PersistentStorage s;
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+  unsigned char* r = (unsigned char*) &s;
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+  for(int i = 0; i < sizeof(PersistentStorage); i++) {
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+    r[i] = EEPROM.read(i);
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+  }
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+  uint16_t a = 0, b = 0;
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+  for(int i = 0; i < sizeof(PersistentStorage) - 2; i++) {
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+    a = (a + r[i]) % 255;
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+    b = (b + a) % 255;
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+  }
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+  if(s.header.checksum != ((b << 8) | a)) {
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+    Serial.print("Checksum error ");
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+    Serial.print(s.header.checksum);
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+    Serial.print(" ");
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+    Serial.println((b << 8) | a);
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+    s.header.count = 0;
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+  } else {
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+    Serial.println("Checksum ok");
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+  }
90 
+  return s;
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+}
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+
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+std::vector<IPAddress> vecClients;
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+
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+// UDP-Config
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+unsigned int localPort = 2390;
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+char packetBuffer[255];
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+char pingBuffer[] = "pingESP8266v0.1";
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+char echoBuffer[] = "echoESP8266v0.1";
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+WiFiUDP Udp;
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+
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+unsigned long lastTime;
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+bool waitingForReplies = false;
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+
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+const char* htmlBegin = "<html>\
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+  <head>\
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+    <title>Sysadmin</title>\
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+    <script src=\"http://hoegerle-home.de/sysAdmin/js/jquery-3.1.1.min.js\"></script>\
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+    <script src=\"http://hoegerle-home.de/sysAdmin/js/bootstrap.min.js\"></script>\
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+    <script src=\"http://hoegerle-home.de/sysAdmin/js/Chart.bundle.min.js\"></script>\
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+    <script src=\"http://hoegerle-home.de/sysAdmin/js/script.js\"></script>\
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+    <link rel=\"stylesheet\" href=\"http://hoegerle-home.de/sysAdmin/css/bootstrap.min.css\" />\
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+  </head>\
114 
+  <body>\
115 
+    <script type=\"text/javascript\">";
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+const char* htmlEnd = "</script>\
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+  </body>\
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+</html>";
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+
120 
+// root-URL
121 
+void handleRoot() {
122 
+  // send a reply, to the IP address and port that sent us the packet we received
123 
+  Udp.beginPacket(broadcastIP, 2390);
124 
+  Udp.write(pingBuffer);
125 
+  Udp.endPacket();
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+
127 
+  // Timer starten
128 
+  lastTime = millis();
129 
+  waitingForReplies = true;
130 
+
131 
+  Serial.println("broadcast send");
132 
+}
133 
+
134 
+// URL nicht vorhanden
135 
+void handleNotFound(){
136 
+  String message = "File Not Found\n\n";
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+  message += "URI: ";
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+  message += server.uri();
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+  message += "\nMethod: ";
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+  message += (server.method() == HTTP_GET)?"GET":"POST";
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+  message += "\nArguments: ";
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+  message += server.args();
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+  message += "\n";
144 
+  for (uint8_t i=0; i<server.args(); i++){
145 
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
146 
+  }
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+  server.send(404, "text/plain", message);
148 
+}
149 
+
150 
+void setup(void) {
151 
+  SHT21.begin();
152 
+
153 
+  EEPROM.begin(512);
154 
+
155 
+  // Debugging
156 
+  Serial.begin(115200);
157 
+  WiFi.begin(ssid, password);
158 
+  Serial.println("");
159 
+
160 
+  // Wait for connection
161 
+  while (WiFi.status() != WL_CONNECTED) {
162 
+    delay(500);
163 
+    Serial.print(".");
164 
+  }
165 
+  Serial.println("");
166 
+  Serial.print("Connected to ");
167 
+  Serial.println(ssid);
168 
+  Serial.print("IP address: ");
169 
+  Serial.println(WiFi.localIP());
170 
+
171 
+  broadcastIP = ~WiFi.subnetMask() | WiFi.gatewayIP();
172 
+
173 
+  storage = readMemory();
174 
+
175 
+  server.on("/", handleRoot);
176 
+  server.onNotFound(handleNotFound);
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+  server.begin();
178 
+
179 
+  serverSocket.begin();
180 
+
181 
+  // NTP-Client
182 
+  ntp.begin(NTP_PORT);
183 
+  WiFi.hostByName(ntpServerName, timeServerIP);
184 
+  lastNTP = millis();
185 
+  sendNTPpacket(timeServerIP);
186 
+
187 
+  Udp.begin(localPort);
188 
+  Serial.println("HTTP server and UDP started");
189 
+}
190 
+
191 
+void loop(void){
192 
+  server.handleClient();
193 
+
194 
+  // Websocket fuer Browser
195 
+  WiFiClient client = serverSocket.available();
196 
+  if(client.connected() && webSocketServer.handshake(client)) {
197 
+
198 
+    String json = "{\"H\":";
199 
+    json += String(SHT21.getHumidity());
200 
+    json += ",";
201 
+    json += "\"T\":";
202 
+    json += String(SHT21.getTemperature());
203 
+    json += ", \"EEPROM\" : [";
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+    for(int i = 0; i < storage.header.count; i++) {
205 
+      json += "{\"H\":";
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+      json += String(storage.data[i].humidity);
207 
+      json += ",";
208 
+      json += "\"T\":";
209 
+      json += String(storage.data[i].temperature);
210 
+      json += "}";
211 
+      if(i < storage.header.count - 1) {
212 
+        json += ",";
213 
+      }
214 
+    }
215 
+    json += "]}";
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+    Serial.println(json);
217 
+
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+    webSocketServer.sendData(json);
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+    client.flush();
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+    client.stop();
221 
+  }
222 
+
223 
+  // NTP wiederholen falls keine Antwort
224 
+  if((timestamp == 0) && ((millis() - lastNTP) > 2000)) {
225 
+    WiFi.hostByName(ntpServerName, timeServerIP);
226 
+    lastNTP = millis();
227 
+    sendNTPpacket(timeServerIP);
228 
+  }
229 
+
230 
+  // NTP Paket vom Server erhalten
231 
+  if(ntp.parsePacket() >= NTP_PACKET_SIZE) {
232 
+    ntp.read(ntpPacketBuffer, NTP_PACKET_SIZE);
233 
+    unsigned long highWord = word(ntpPacketBuffer[40], ntpPacketBuffer[41]);
234 
+    unsigned long lowWord = word(ntpPacketBuffer[42], ntpPacketBuffer[43]);
235 
+    unsigned long secsSince1900 = highWord << 16 | lowWord;
236 
+    const unsigned long seventyYears = 2208988800UL;
237 
+    unsigned long epoch = secsSince1900 - seventyYears;
238 
+    timestamp = epoch;
239 
+    timeReceived = millis();
240 
+    Serial.println(epoch);
241 
+  }
242 
+
243 
+  // EEPROM-Schreiben jede Stunde
244 
+  if((((((millis() - timeReceived) / 1000) + timestamp) % 3600) == 0) && (timestamp != 0) && (((millis() - lastStorageTime) > 100000) || storeAtBoot) ) {
245 
+      lastStorageTime = millis();
246 
+      storeAtBoot = 0;
247 
+      if(storage.header.count < MAX_STORAGE) {
248 
+        storage.header.count++;
249 
+      } else {
250 
+        for(int i = 0; i < MAX_STORAGE - 1; i++) {
251 
+          storage.data[i] = storage.data[i+1];
252 
+        }
253 
+      }
254 
+      storage.data[storage.header.count-1].temperature = SHT21.getTemperature();
255 
+      storage.data[storage.header.count-1].humidity = SHT21.getHumidity();
256 
+      writeMemory(storage);
257 
+  }
258 
+
259 
+  // UDP
260 
+  int packetSize = Udp.parsePacket();
261 
+  if(packetSize) {
262 
+    IPAddress remoteIp = Udp.remoteIP();
263 
+    // read the packet into packetBufffer
264 
+    int len = Udp.read(packetBuffer, 255);
265 
+    if (len > 0) {
266 
+      packetBuffer[len] = 0;
267 
+    }
268 
+
269 
+    Serial.println(packetBuffer);
270 
+
271 
+    if(strcmp(packetBuffer, pingBuffer) == 0) {
272 
+      Serial.println("Broadcast");
273 
+      Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
274 
+      Udp.print(echoBuffer);
275 
+      Udp.endPacket();
276 
+    } else if((strcmp(packetBuffer, echoBuffer) == 0) && (waitingForReplies == true)) {
277 
+      vecClients.push_back(Udp.remoteIP());
278 
+    }
279 
+  }
280 
+
281 
+  if(((millis() - lastTime) >= MAX_WAIT_TIME) && (waitingForReplies == true)) {
282 
+    Serial.println("waiting done");
283 
+    waitingForReplies = false;
284 
+    String message = htmlBegin;
285 
+    message += "var clients = Array(";
286 
+    message += "\"" + WiFi.localIP().toString() + "\"";
287 
+    if(vecClients.size() > 0) {
288 
+      message += ", ";
289 
+    }
290 
+    for(int i = 0; i < vecClients.size(); i++) {
291 
+      message += "\"" + vecClients[i].toString() + "\"";
292 
+      if(i < (vecClients.size() - 1)) {
293 
+        message += ", ";
294 
+      }
295 
+    }
296 
+    message += ");";
297 
+    message += htmlEnd;
298 
+
299 
+    vecClients.clear();
300 
+
301 
+    server.send(200, "text/html", message);
302 
+  }
303 
+}
304 
+
305 
+void sendNTPpacket(IPAddress& address) {
306 
+  Serial.println("sending NTP packet...");
307 
+  memset(ntpPacketBuffer, 0, NTP_PACKET_SIZE);
308 
+  ntpPacketBuffer[0] = 0b11100011;   // LI, Version, Mode
309 
+  ntpPacketBuffer[1] = 0;
310 
+  ntpPacketBuffer[2] = 6;
311 
+  ntpPacketBuffer[3] = 0xEC;
312 
+  ntpPacketBuffer[12]  = 49;
313 
+  ntpPacketBuffer[13]  = 0x4E;
314 
+  ntpPacketBuffer[14]  = 49;
315 
+  ntpPacketBuffer[15]  = 52;
316 
+
317 
+  ntp.beginPacket(address, 123);
318 
+  ntp.write(ntpPacketBuffer, NTP_PACKET_SIZE);
319 
+  ntp.endPacket();
320 
+}
321 
+
322 
+

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