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| 1 | +//PhyESPx |
| 2 | +//by deebugger.de |
| 3 | + |
| 4 | +#include <WiFi.h> |
| 5 | +#include <WebSocketsServer.h> |
| 6 | +#include <ArduinoJson.h> |
| 7 | + |
| 8 | +///* Software Version Code */// |
| 9 | +const char* SOFTWARE_VERSION = "3.7.1"; //(10.02.23) |
| 10 | + |
| 11 | +///* Put Your 2.4GHz WiFi Credentials Here */// |
| 12 | +const char* WiFi_SSID = "YOUR_SSID";// <---MODIFY! |
| 13 | +const char* WiFi_PASSWD = "YOUR_PASSWD";// <---MODIFY! |
| 14 | + |
| 15 | +///* Every Transmitter Has Its Own ID */// |
| 16 | +const byte transmitterID = 1;// <---MODIFY! |
| 17 | + |
| 18 | +///* WiFi Network Settings */// |
| 19 | +IPAddress local_IP(192, 168, 178, 200+transmitterID); // <---Make Sure IP-Address Is Working! |
| 20 | +IPAddress gateway(192, 168, 178, 1); |
| 21 | +IPAddress subnet(255, 255, 255, 0); |
| 22 | + |
| 23 | +///* Start Stop Button Pin */// |
| 24 | +const int buttonPin = 4; |
| 25 | + |
| 26 | +DynamicJsonDocument doc(1024); |
| 27 | +WebSocketsServer webSocket = WebSocketsServer(81); |
| 28 | + |
| 29 | +#define USE_SERIAL Serial //set to Serial for deeeeebugging |
| 30 | + |
| 31 | +byte sensorID = 0; //1: illuminance sensor; 2: current sensor; 3: speed sensor; 4: voltage sensor; |
| 32 | +int sensorUpdateInterval = 100; //can be specified in sensor setup (default: 100ms delay --> 10Hz) |
| 33 | +String experimentStatus = "clear"; //"clear", "run", "pause" |
| 34 | + |
| 35 | + |
| 36 | +void setup() { |
| 37 | + USE_SERIAL.begin(115200); |
| 38 | + USE_SERIAL.setDebugOutput(true); |
| 39 | + USE_SERIAL.println(); |
| 40 | + USE_SERIAL.println(); |
| 41 | + USE_SERIAL.println(); |
| 42 | + |
| 43 | + setupStatusLED(); |
| 44 | + |
| 45 | + if (!WiFi.config(local_IP, gateway, subnet)) { |
| 46 | + USE_SERIAL.println("IP Config Failed"); |
| 47 | + } |
| 48 | + |
| 49 | + WiFi.begin(WiFi_SSID, WiFi_PASSWD); |
| 50 | + |
| 51 | + USE_SERIAL.print("Connecting to WiFi"); |
| 52 | + while(WiFi.status() != WL_CONNECTED){ |
| 53 | + showConnectingAnimation(); |
| 54 | + USE_SERIAL.print("."); |
| 55 | + } |
| 56 | + USE_SERIAL.println(); |
| 57 | + |
| 58 | + USE_SERIAL.print("Connected to "); |
| 59 | + USE_SERIAL.print(WiFi.SSID()); |
| 60 | + USE_SERIAL.print(" with IP "); |
| 61 | + USE_SERIAL.println(WiFi.localIP()); |
| 62 | + USE_SERIAL.print("Subnet Mask: "); |
| 63 | + USE_SERIAL.println(WiFi.subnetMask()); |
| 64 | + USE_SERIAL.print("Gateway IP: "); |
| 65 | + USE_SERIAL.println(WiFi.gatewayIP()); |
| 66 | + |
| 67 | + USE_SERIAL.print("Setting up WebSocket Server... "); |
| 68 | + webSocket.begin(); |
| 69 | + webSocket.onEvent(webSocketEvent); |
| 70 | + webSocket.enableHeartbeat(1000, 500, 2); |
| 71 | + USE_SERIAL.println("Done!"); |
| 72 | + |
| 73 | + setupButton(); |
| 74 | + |
| 75 | + setupAutoUpdate(); |
| 76 | + |
| 77 | + setupSensor(); |
| 78 | + |
| 79 | + setStatusLedIdle(); |
| 80 | +} |
| 81 | + |
| 82 | +double startTime, lastSessionDuration; //session parameters for "time" dataset in experiment |
| 83 | + |
| 84 | +void onRun(){ |
| 85 | + webSocket.broadcastTXT("{\"status\":\"run\"}"); |
| 86 | + experimentStatus = "run"; |
| 87 | + setStatusLedRunning(); |
| 88 | + startTime = millis() - lastSessionDuration; |
| 89 | +} |
| 90 | + |
| 91 | +void onPause(){ |
| 92 | + webSocket.broadcastTXT("{\"status\":\"pause\"}"); |
| 93 | + experimentStatus = "pause"; |
| 94 | + lastSessionDuration = millis() - startTime; |
| 95 | + setStatusLedConnected(); |
| 96 | +} |
| 97 | + |
| 98 | +void onClear(){ |
| 99 | + webSocket.broadcastTXT("{\"status\":\"clear\"}"); |
| 100 | + experimentStatus = "clear"; |
| 101 | + startTime = 0; |
| 102 | + lastSessionDuration = 0; |
| 103 | + setStatusLedConnected(); |
| 104 | +} |
| 105 | + |
| 106 | +long lastPingReceived; //runtime last ping received |
| 107 | +bool clientAvailable = false; //at least one client is available |
| 108 | + |
| 109 | +void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) { |
| 110 | + switch(type) { |
| 111 | + case WStype_CONNECTED: |
| 112 | + { |
| 113 | + webSocket.sendTXT(num, "{\"deviceID\":\""+String(transmitterID) +"\", \"sensorID\":\""+String(sensorID)+"\"}"); |
| 114 | + webSocket.broadcastTXT("{\"status\":\""+String(experimentStatus)+"\"}"); |
| 115 | + if (experimentStatus != "run") setStatusLedConnected(); |
| 116 | + clientAvailable = true; |
| 117 | + } |
| 118 | + break; |
| 119 | + case WStype_TEXT: |
| 120 | + if(String((char *)payload).equals(String("ping"))){ |
| 121 | + webSocket.broadcastTXT("pong"); |
| 122 | + lastPingReceived = millis(); |
| 123 | + if(!clientAvailable){ //for initial connection set |
| 124 | + setStatusLedConnected(); |
| 125 | + clientAvailable = true; |
| 126 | + } |
| 127 | + |
| 128 | + }else{ |
| 129 | + DeserializationError error = deserializeJson(doc, payload); |
| 130 | + if (error) { |
| 131 | + USE_SERIAL.print(F("deserializeJson() failed: ")); |
| 132 | + USE_SERIAL.println(error.f_str()); |
| 133 | + }else{ |
| 134 | + if(doc["set_status"]){ |
| 135 | + experimentStatus = doc["set_status"].as<String>(); |
| 136 | + if(experimentStatus.equals("clear")){ |
| 137 | + onClear(); |
| 138 | + }else if(experimentStatus.equals("run")){ |
| 139 | + onRun(); |
| 140 | + }else if(experimentStatus.equals("pause")){ |
| 141 | + onPause(); |
| 142 | + } |
| 143 | + } |
| 144 | + } |
| 145 | + } |
| 146 | + break; |
| 147 | + } |
| 148 | +} |
| 149 | + |
| 150 | +long lastPackageSent; |
| 151 | +void loop() { |
| 152 | + |
| 153 | + checkForAutoUpdate(); |
| 154 | + checkForButtonPressed(); |
| 155 | + checkForSensorChanged(); |
| 156 | + |
| 157 | + webSocket.loop(); |
| 158 | + |
| 159 | + if(experimentStatus.equals("run")){ //gather data |
| 160 | + if(millis()-lastPackageSent > sensorUpdateInterval){ |
| 161 | + lastPackageSent = millis();//right at the start to exclude processing time |
| 162 | + doc.clear(); |
| 163 | + doc["time"] = (millis()-startTime) / 1000; |
| 164 | + readSensor(); |
| 165 | + String dataset; |
| 166 | + serializeJson(doc, dataset); |
| 167 | + webSocket.broadcastTXT(dataset); |
| 168 | + } |
| 169 | + } |
| 170 | + |
| 171 | + ///** Ping Handler **/// |
| 172 | + if(millis() - lastPingReceived > 3500){ //ping timeout |
| 173 | + setStatusLedIdle(); |
| 174 | + clientAvailable = false; |
| 175 | + } |
| 176 | +} |
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