按行业我不是Arduino程序员，而且几年来我都没有使用HTML。我有一个在带有Web前端的ESP8266上运行Arduino代码的项目。我正在尝试添加更改wi-fi密码的选项，但是表单的该部分似乎对代码不可用。 我在这里犯了一个简单的错误吗？
/********************************************************************
* Name: DiffPressureServer
* Author: Rod Naugler
* Version: 0.1
* Date: 18 Sept 2018
* Copyright: All rights reserved
* Description: Arduino IDE script designed to be uploaded to Sonoff
* Basic WiFi switch. Communicates with SPD810-125PA
* differential presseure sensor over the I2C bus.
* The relay can be triggered either by a differential
* pressue in excess of the set point, or bythe button
* in the web interface. The web interface also displays
* the current differential pressure, the set point, and
* the relay status.
********************************************************************/
//Include the ESP8266 WiFi library to allow the unit to act as access point
#include <ESP8266WiFi.h>
//Include the ESP8266 Webserver library to allow us to process the web forms
#include <ESP8266WebServer.h>
//Include the EEPROM library to allow setpoints to persist across reboots
#include <EEPROM.h>
//Include the Wire library to allow I2C communication with the sensors.
#include <Wire.h>
//This is the station ID and password to access the pressure sensor with your WiFi device
const char *ssid = "HAWK-EYE-DP-Sensor";
const char *password = "thereisnospoon";
char storedPassword[64];
// Create an instance of the server on standard port 80
ESP8266WebServer server(80);
//Create a string to hold the received header
String header;
//Create a string to show the state of the relay and default to off
char* outputRelayState;
//Create constants for the two GPIOs we'll be using.
const int outputLED = 13; //Active low
const int outputRelay = 12; //Active high
//Define the i2c address to work with
int i2cAddress = 0x25;
//A long to hold the returned values
float i2cValue = 00;
//A long to hold the sensor temperature
float i2cTemp = 00;
float i2cTempConv = 200;
//A long to hold the sensor scale value
float i2cScale = 00;
//A byte to hold the CRC value
byte i2cCRC = 00;
//A long to hold the high setpoint
float highSet = 00;
//A long to hold the low setpoint
float lowSet = 00;
//Define the maximum set value
#define MaxSet 125
//Define the minimum set value
#define MinSet -125
//Define a BOOL to hold the automatic state
char* automatic;
//A character string to hold our webpage
char html[3000];
//A character string to hold the fan button code
char fanButton[100];
//Variables for change password function
char* errorMessage="";
char charBuf[50];
//Setup everything
void setup() {
//Start the eeprom with 512Bytes reserved
EEPROM.begin(512);
//Get the first four bytes as a float for low set
EEPROM.get(0,lowSet);
//Get the next four bytes as a float for high set
EEPROM.get(sizeof(lowSet),highSet);
//Get the stored WiFi password
EEPROM.get((sizeof(lowSet)+sizeof(highSet)),storedPassword);
if(strcmp(storedPassword,"ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ")){
strcpy(storedPassword, password);
}
//Start with the output Relay off
outputRelayState="off";
//Start in automatic mode
automatic = "checked";
//Open the i2c path. This uses the TX pin as Data and RX pin as clock
Wire.begin(1,3);
//Set the DP Sensor to Triggered Read Mode
Wire.beginTransmission(i2cAddress);
Wire.write(0x36);
Wire.write(0x15);
Wire.endTransmission();
// Prepare the output LED
pinMode(outputLED, OUTPUT);
digitalWrite(outputLED, HIGH);
// Prepare the output relay
pinMode(outputRelay, OUTPUT);
digitalWrite(outputRelay, LOW);
// Start the WiFi Access point
WiFi.softAP(ssid, password);
// Setup the url handler
server.on("/", handleRootPath);
// Start the Web server
server.begin();
}
// The page not found handler
void handleNotFound(){
String message = "File not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += ( server.method() == HTTP_GET ) ? "GET" : "POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
server.send(404,"text/plain",message);
}
//The only valid page handler
void handleRootPath(){
//Check to see if values were posted from the form.
if (server.args()>0){
if(server.arg("high")){
highSet=server.arg("high").toFloat();
if (highSet > MaxSet){
highSet = MaxSet;
}
if (highSet < MinSet){
highSet = MinSet;
}
EEPROM.put(sizeof(float),highSet);
EEPROM.commit();
}
if(server.arg("low")){
lowSet=server.arg("low").toFloat();
if(lowSet > MaxSet || lowSet > highSet || lowSet<MinSet){
lowSet = highSet;
}
EEPROM.put(0,lowSet);
EEPROM.commit();
}
if(server.arg("automatic")){
if(server.arg("automatic")=="checked"){
automatic="checked";
} else {
automatic="unchecked";
}
}
if(server.arg("fan")){
if(server.arg("fan")=="on"){
outputRelayState="on";
digitalWrite(outputLED, LOW);
digitalWrite(outputRelay, HIGH);
automatic="unchecked";
} else {
if(server.arg("fan")=="off"){
outputRelayState="off";
digitalWrite(outputLED, HIGH);
digitalWrite(outputRelay, LOW);
automatic="unchecked";
}
}
}
//Section to handle changing the password
if(server.arg("changepass")){
// if(server.arg("changepass")=="checked"){
// strcpy(errorMessage,"Old Password Fail");
// } else {
// strcpy(errorMessage, "");
// errorMessage=server.arg("changepass").toCharArray(charBuf,32);
// }
// if(server.arg("oldpass")==password){
// errorMessage="Old Password Match";
// } else {
// }
// }
}
}
//display on/off button depending on state.
if (strcmp(outputRelayState,"off")==0){
snprintf(fanButton,100,"<input type='submit' name='fan' value='on' />\n");
} else {
snprintf(fanButton,100,"<input type='submit' name='fan' value='off' />\n");
}
snprintf(html, 3000,
"<html>\n"
" <head>\n"
" <meta name='viewport' content='width=device-width, initial-scale=1'>\n"
" <link rel='icon' href='data:,'>\n"
" <style>html {font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n"
" .button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;\n"
" text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}\n"
" .button2 {background-color: #FF3030;}\n"
" .on { background-color: #4CAF50;}\n"
" .off { background-color: #FF3030;}\n"
" </style>\n"
" <script>\n"
" function reveal() {\n"
" var checkBox=document.getElementById('changepass');\n"
" var passBox=document.getElementById('passwordBox');\n"
" if (checkBox.checked == true){\n"
" passBox.style.display='block';\n"
" } else {\n"
" passBox.style.display='none';\n"
" }\n"
" }\n"
" </script>\n"
" </head>\n"
" <body>\n"
" <h1>HAWK-EYE Technical Services</h1>\n"
" <h2>Differential Barametric Pressure Control System</h2>\n"
" <form method='post' action='http://192.168.4.1/'>\n"
" <table border=0 align=center>\n"
" <tr>\n"
" <td align=left>Current Temp</td>\n"
" <td><textbox> %03.2f </textbox></td>\n"
" </tr>\n"
" <tr>\n"
" <td align=left>Current DP</td>\n"
" <td><textbox> %03.2f </textbox></td>\n"
" </tr>\n"
" <tr>\n"
" <td align=left>Low Setpoint</td>\n"
" <td><input type='text' name='low' width=8 value=' %03.2f '/></td>\n"
" </tr>\n"
" <tr>\n"
" <td align=left>High Setpoint</td>\n"
" <td><input type='text' name='high' width=8 value=' %03.2f '/></td>\n"
" </tr>\n"
" </table>\n"
" Automatic: <input type='checkbox' name='automatic' value='checked' %s/><br/>\n"
" <input type='checkbox' name='changepass' id='changepass' value='unchecked' onclick='reveal()'/> Change Password<br/>\n"
" <table border=0 id='passwordBox' style='display:none'>\n"
" <tr>\n"
" <td>Old Password</td>\n"
" <td><input type='password' name='oldpass' width=8 /></td>\n"
" </tr>\n"
" <tr>\n"
" <td>New Password</td>\n"
" <td><input type='password' name='newpass1' width=8 /></td>\n"
" </tr>\n"
" <tr>\n"
" <td>New Password</td>\n"
" <td><input type='password' name='newpass2' width=8 /></td>\n"
" </tr>\n"
" <tr>\n"
" <td colspan=2>%s</td>\n"
" </tr>\n"
" </table>\n"
" <br/>\n"
" <input type='submit' name='fan' value='Set' />\n"
" <h1 class='%s'>FAN - State %s </h1>\n"
" %s"
" </form>\n"
"%s %s"
" </body>\n"
"</html>",i2cTemp,i2cValue,lowSet,highSet,automatic,errorMessage,outputRelayState,outputRelayState,fanButton,storedPassword,errorMessage);
server.send(200, "text/html",html);
}
void loop() {
//Start the EEPROM handler so we can write to the EEPROM
EEPROM.begin(512);
//Call the client handler
server.handleClient();
//Code to read the value from the ADC
Wire.requestFrom(i2cAddress,5,1);
if(Wire.available()==5){
i2cValue = Wire.read();
i2cValue = i2cValue *256;
i2cValue = i2cValue+Wire.read();
i2cCRC = Wire.read();
i2cTemp = Wire.read();
i2cTemp = i2cTemp * 256;
i2cTemp = i2cTemp+Wire.read();
// i2cCRC = Wire.read();
// i2cScale = Wire.read() * 256;
// i2cScale = i2cScale + Wire.read();
// i2cCRC = Wire.read();
i2cValue = i2cValue/256; //conversion factor
i2cTemp = i2cTemp/i2cTempConv;
}
if (strcmp(automatic,"checked")==0 && i2cValue > highSet){
outputRelayState="on";
digitalWrite(outputLED, LOW);
digitalWrite(outputRelay, HIGH);
}
if (strcmp(automatic,"checked")==0 && i2cValue < lowSet){
outputRelayState="off";
digitalWrite(outputLED, HIGH);
digitalWrite(outputRelay, LOW);
}
delay(100);
}
我浏览了类似的帖子，但没有发现任何相关内容。 感谢您的协助。
杆