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ESP32RemotePowerAmplifierMonitor.ino

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+/****************************************************************************************************************************
+  Remote PA Monitor - solution to remotely monitor RF power, SWR and more of QO-100 power amplifiers
+
+  For Ethernet shields using WT32_ETH01 (ESP32 + LAN8720)
+  Uses WebServer_WT32_ETH01, a library for the Ethernet LAN8720 in WT32_ETH01 to run WebServer
+
+  Based on and modified from ESP8266 https://github.com/esp8266/Arduino/releases
+  Based on Built by Khoi Hoang https://github.com/khoih-prog/WebServer_WT32_ETH01
+  Adapted by Michael Clemens
+  Licensed under MIT license
+
+  Copyright (c) 2015, Majenko Technologies
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without modification,
+  are permitted provided that the following conditions are met:
+
+  Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+  Redistributions in binary form must reproduce the above copyright notice, this
+  list of conditions and the following disclaimer in the documentation and/or
+  other materials provided with the distribution.
+
+  Neither the name of Majenko Technologies nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************************************************************/
+
+#define DEBUG_ETHERNET_WEBSERVER_PORT       Serial
+
+// Debug Level from 0 to 4
+#define _ETHERNET_WEBSERVER_LOGLEVEL_       1
+
+#include <WebServer_WT32_ETH01.h>
+#include "index.h"  //Web page header file
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+uint8_t temprature_sens_read();
+#ifdef __cplusplus
+}
+#endif
+uint8_t temprature_sens_read();
+
+int IO2_FWD = 2;
+int IO4_REF = 4;
+
+WebServer server(80);
+
+// Select the IP address according to your local network
+IPAddress myIP(192, 168, 88, 247);
+IPAddress myGW(192, 168, 88, 1);
+IPAddress mySN(255, 255, 255, 0);
+
+// Google DNS Server IP
+IPAddress myDNS(8, 8, 8, 8);
+
+void handleRoot()
+{
+  String s = MAIN_page; //Read HTML contents
+  server.send(200, "text/html", s); //Send web page
+}
+
+void handleNotFound()
+{
+  String message = F("File Not Found\n\n");
+
+  message += F("URI: ");
+  message += server.uri();
+  message += F("\nMethod: ");
+  message += (server.method() == HTTP_GET) ? F("GET") : F("POST");
+  message += F("\nArguments: ");
+  message += server.args();
+  message += F("\n");
+
+  for (uint8_t i = 0; i < server.args(); i++)
+  {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+
+  server.send(404, F("text/plain"), message);
+}
+
+void handleFWD() {
+  String fwdValue = String(analogReadMilliVolts(IO2_FWD));
+  server.send(200, "text/plane", fwdValue); //Send ADC value only to client ajax request
+}
+
+void handleREF() {
+  String refValue = String(analogReadMilliVolts(IO4_REF));
+  server.send(200, "text/plane", refValue); //Send ADC value only to client ajax request
+}
+
+void handleTEMP() {
+  int a = (temprature_sens_read() - 32) / 1.8;
+  String tempValue = String(a);
+  server.send(200, "text/plane", tempValue); //Send ADC value only to client ajax request
+}
+
+void setup()
+{
+  analogReadResolution(12);
+  Serial.begin(115200);
+
+  while (!Serial);
+
+  // Using this if Serial debugging is not necessary or not using Serial port
+  //while (!Serial && (millis() < 3000));
+
+  Serial.print("\nStarting AdvancedWebServer on " + String(ARDUINO_BOARD));
+  Serial.println(" with " + String(SHIELD_TYPE));
+  Serial.println(WEBSERVER_WT32_ETH01_VERSION);
+
+  // To be called before ETH.begin()
+  WT32_ETH01_onEvent();
+  
+  ETH.begin(ETH_PHY_ADDR, ETH_PHY_POWER);
+  // Static IP, leave without this line to get IP via DHCP
+  ETH.config(myIP, myGW, mySN, myDNS);
+
+  WT32_ETH01_waitForConnect();
+
+  server.on(F("/"), handleRoot);
+  server.on("/readFWD", handleFWD);
+  server.on("/readREF", handleREF);
+  server.on("/readTEMP", handleTEMP);
+
+  server.onNotFound(handleNotFound);
+  server.begin();
+
+  Serial.print(F("HTTP EthernetWebServer is @ IP : "));
+  Serial.println(ETH.localIP());
+}
+
+void loop()
+{
+  server.handleClient();
+}

index.h

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+const char MAIN_page[] PROGMEM = R"=====(
+<!DOCTYPE html>
+<html>
+<style>
+.card{
+     max-width: 250px;
+     min-height: 200px;
+     background: #02b875;
+     padding: 30px;
+     box-sizing: border-box;
+     color: #FFF;
+     margin:20px;
+     box-shadow: 0px 2px 18px -4px rgba(0,0,0,0.75);
+}
+
+</style>
+<body>
+
+
+<div class="card">
+  <h1>FWD Voltage</h1>
+  <h1><span id="FWDValue">0</span>mV</h1>
+</div>
+
+<div class="card">
+  <h1>REF Voltage</h1>
+  <h1><span id="REFValue">0</span>mV</h1>
+</div>
+
+<div class="card">
+  <h1>Temperature</h1> 
+  <h1><span id="TEMPValue">0</span>&#8451;</h1>
+</div>
+
+<script>
+
+setInterval(function() {
+  // Call a function repetatively with 1 Second interval
+  getFWD();
+  getREF();
+  getTEMP();
+}, 1000); //1000mSeconds update rate
+
+function getFWD() {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      document.getElementById("FWDValue").innerHTML =
+      this.responseText;
+    }
+  };
+  xhttp.open("GET", "readFWD", true);
+  xhttp.send();
+}
+function getREF() {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      document.getElementById("REFValue").innerHTML =
+      this.responseText;
+    }
+  };
+  xhttp.open("GET", "readREF", true);
+  xhttp.send();
+}
+function getTEMP() {
+  var xhttp = new XMLHttpRequest();
+  xhttp.onreadystatechange = function() {
+    if (this.readyState == 4 && this.status == 200) {
+      document.getElementById("TEMPValue").innerHTML =
+      this.responseText;
+    }
+  };
+  xhttp.open("GET", "readTEMP", true);
+  xhttp.send();
+}
+</script>
+</body>
+</html>
+)=====";