html - 如何从 HTM 获取输入整数?- Arduino / NodeMCU ESP32
问题描述
嗨,我目前正在做伺服 NodeMCU 控制。我的计划是创建一个输入框,我可以在其中输入,然后我输入的任何数字都将用作使用 Webserver 或 194.168.4.1 等的伺服角度。(例如:我输入 90,伺服角度将是 90) 我不知道如何得到它的问题。这是代码:
#include<Servo.h>
Servo ServoPin;
int angle = 0;
#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiAP.h>
#define ServoPin 34; // Set the GPIO pin where you connected your test LED or comment this line out if your dev board has a built-in LED
// Set these to your desired credentials.
const char *ssid = "XXXXXX";
const char *password = "XXXXXX";
WiFiServer server(80);
void setup() {
Serial.begin(115200);
Serial.println();
Serial.println("Configuring access point...");
pinMode(ServoPin,OUTPUT);
// You can remove the password parameter if you want the AP to be open.
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
server.begin();
Serial.println("Server started");
}
void loop() {
WiFiClient client = server.available(); // listen for incoming clients
if (client) { // if you get a client,
Serial.println("New Client."); // print a message out the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println();
// the content of the HTTP response follows the header:
client.print("<!DOCTYPE html>");
client.print("<html>");
client.print("<body>");
client.print("<p>Change the text of the text field, and then click the button below.</p>"); //
client.print("INPUT NUMBER: <input type='number' id='servo'>"); //in this area, I WILL TYPE number 0-255.
client.print("<button type='button' '>Go</button>");
ServoPin.attach(number); //the area where i will assign the servo to the angle i type.
// break out of the while loop:
break;
} else { // if you got a newline, then clear currentLine:
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
}
}
// close the connection:
client.stop();
Serial.println("Client Disconnected.");
}
}
所以你可以在 client.print"INPUT NUMBER.... 中看到,这就是我的代码将设计一个输入框的地方。问题是它在一个 " " 或双引号内。我想知道什么我应该做些什么来获取“数字”输入,然后在 ServoPin.attach(number) 上使用它;
我是 HTML 的初学者(实际上为零),因为我在这里还没有知识。此代码主要取自互联网 w3school 网站,然后我将其修改为伺服控制。所以我真的希望有人能告诉我怎么做......
板子:Node32 实际板子:NodeMCU ESP 32
解决方案
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