在 Arduino 上接收 HTTP POST 请求 [英] Receiving a HTTP POST Request on Arduino
问题描述
是否可以使用以太网屏蔽通过我的 Arduino Uno 接收 HTTP Post 请求.我想制作一个可以控制我 Arduino 的 Android 应用程序，我认为最好的方法是使用 HTTP Post 请求.
Is it possible to receive a HTTP Post request with my Arduino Uno using a Ethernet shield. I want to make an Android app wich can control me Arduino and I thought the best way to do it is with a HTTP Post Request.
关于1的帖子很多]，但我找不到任何关于如何接收 HTTP Post 请求的帖子.我刚开始为 Arduino 编程，但我已经为 Android 制作了一些应用程序(我已经完成了 Android 的邮政编码).
There are many posts about 1[Sending a POST Request], but i couldn't found any posts of how to receive HTTP Post request. I just started programming for Arduino but I already made a few apps for Android (I already have the post code for Android done).
推荐答案
我想像您一样阅读 POST，而不是使用 GET.我是这样做的:
I wanted to read a POST like you instead of using a GET. I did it like this:
/*
A simple Arduino Ethernet web server.
by John Harrison
*/
#include <SPI.h>
#include <Ethernet.h>
// You can change the MAC and IP addresses to suit your network:
byte mac[] = { 0X52, 0X64, 0X75, 0X69, 0X6E, 0X6F };
IPAddress ip( 192,168,0,97 );
EthernetServer server(80); // Port 80 is HTTP port
char new_state[1024];
void setup()
{
Serial.begin(9600);
// Start the Ethernet server:
Ethernet.begin(mac, ip);
server.begin();
// Set the digital pins ready to write to
for (int pin = 2; pin <= 9; pin++) {
pinMode(pin, OUTPUT);
}
Serial.print("Serving on http://");
Serial.println(Ethernet.localIP());
}
void loop()
{
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
// Serial.println("Client connected");
while (client.connected()) {
int i = 0;
int head = 1;
int body = 0;
while(client.available()) {
char c = client.read();
if (c == '\n') {
if ( i <= 2 ) {
// an http request ends with a blank line
sendPage(client);
if ( head == 1 ) {
body = 1;
head = 0;
}
}
i = -1;
}
if ( body == 1 ) {
new_state[i] = c;
}
i++;
new_state[i] = '\0';
}
i = 0;
}
// Serial.println("Disconnected");
/*
if ( strlen(new_state) > 0 ){
Serial.print ("[");
Serial.print(new_state);
Serial.println ("]");
}
*/
// Post data looks like pinD2=On
if ( strncmp( new_state, "pinD", 4) == 0 ) {
int pin = new_state[4] - 48; // Convert ascii to int
// Serial.println(pin);
if ( strncmp( new_state+5, "=On", 3) == 0 ) {
digitalWrite(pin, 1);
}
else if ( strncmp( new_state+5, "=Off", 4) == 0 ) {
digitalWrite(pin, 0);
}
}
}
}
void sendPage(EthernetClient client)
{
// Serial.println("Sending response");
// send a standard http response header
client.println("HTTP/1.0 200 OK\Content-Type: text/html\n\n<html>\n<head>");
client.println("<link rel='icon' href='data:;base64,iVBORw0KGgo='>");
client.println("<title>POST Pin controller</title>\n</head>\n<body>\n");
client.println("<h2>Buttons turn pins on or off</h2>");
client.println("<form method='post' action='/' name='pins'>");
char line[1024];
int pin;
for ( pin=2; pin<=9; pin++ ) {
sprintf(line, "<input name='pinD%d' type='submit' value='On' />\n", pin);
client.print(line);
sprintf(line, "<input name='pinD%d' type='submit' value='Off' /> %d<br />\n", pin, pin);
client.print(line);
}
client.println("</form>\n</body>\n</html>");
client.stop();
}
有一些更简单、更小的方法可以做到这一点，但我发现它们非常滞后，所以一直试图尽快完成.
There are ways to do it which are simpler and smaller, but I found them quite laggy so have been trying to get it as fast as possible.
我已经用它来控制 Mega 2560 上针脚 2-9 上的 8 个 LED.我还没有在 Uno 上测试过，但我希望它也能正常工作.
I have used this to control 8 LEDs on pins 2-9 on a Mega 2560. I haven't tested it on a Uno yet, but I expect it would work the same.
这篇关于在 Arduino 上接收 HTTP POST 请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
