Question

我刚刚在Ebay上购买了新的ENC28J60以太网LAN网络模块，我希望将此模块的POST数据发送到指定的网址，例如。 www.mydomain.com/example.php

我重新阅读谷歌的一些例子，但我能看到的只是arduino盾牌的例子，而不是我的模块。有了这个模块，我正在使用以下库：

“etherShield.h”
“ETHER_28J60.h”

我想将一个/两个指定的POSTS（变量）发送到php公式，但我不知道该怎么做。

Answer 1

首先，您需要安装以下库： https://github.com/jcw/ethercard

使用6个引脚将模块连接到arduino：

ENC SO - ＆gt; Arduino pin 12
ENC SI - ＆gt; Arduino pin 11
ENC SCK - ＆gt; Arduino pin 13
ENC CS - ＆gt; Arduino pin 8
ENC VCC - ＆gt; Arduino 3V3引脚
ENC GND - ＆gt; Arduino Gnd pin

然后使用以下代码：

#include <EtherCard.h>

// your variable

#define PATH    "example.php"
#define VARIABLE    "test"

// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };

char website[] PROGMEM = "www.mydomain.com";

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
  Serial.begin(57600);
  Serial.println("\n[webClient]");

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
    Serial.println( "Failed to access Ethernet controller");
  if (!ether.dhcpSetup())
    Serial.println("DHCP failed");

  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
  ether.printIp("DNS: ", ether.dnsip);  

  if (!ether.dnsLookup(website))
    Serial.println("DNS failed");

  ether.printIp("SRV: ", ether.hisip);
}

void loop () {
  ether.packetLoop(ether.packetReceive());

  if (millis() > timer) {
    timer = millis() + 10000;

    byte sd = stash.create();
    stash.print("variable=");
    stash.print(VARIABLE);
    stash.print("&action=Submit");
    stash.save();

    // generate the header with payload - note that the stash size is used,
    // and that a "stash descriptor" is passed in as argument using "$H"
    Stash::prepare(PSTR("POST http://$F/$F.csv HTTP/1.0" "\r\n"
                "Host: $F" "\r\n"
                "Content-Length: $D" "\r\n"
                "Content-Type: application/x-www-form-urlencoded" "\r\n"
                "\r\n"
                "$H"),
    website, PSTR(PATH), website, stash.size(), sd);

    // send the packet - this also releases all stash buffers once done
    ether.tcpSend();
  }
}

Answer 2

如果有人希望调用API，则需要在请求中删除.csv，如下所示：

 byte sd = stash.create();
    stash.print("variable="); //change this to your post variable
    stash.print(VARIABLE);
    stash.print("&action=Submit");
    stash.save();
// generate the header with payload - note that the stash size is used,
// and that a "stash descriptor" is passed in as argument using "$H"
//remove the .csv
Stash::prepare(PSTR("POST http://$F/$F HTTP/1.0" "\r\n"
            "Host: $F" "\r\n"
            "Content-Length: $D" "\r\n"
            "Content-Type: application/x-www-form-urlencoded" "\r\n"
            "\r\n"
            "$H"),
website, PSTR(PATH), website, stash.size(), sd);

其他信息，如果您正在使用本地服务器进行测试，则可以查看Wampp或Xampp Server的访问日志，以了解您的请求是否到达服务器的天气。

并在此行中使用const：

char const website[] PROGMEM = "www.mydomain.com";

Answer 3

您可能想要尝试与库存Ethernet-lib完全兼容的库：

https://github.com/ntruchsess/arduino_uip

来自Arduino-IDE以太网的示例通过在[arduino-dir] / libraries / UIPEthernet中安装此lib来打开标准以太网示例（例如：examples-＆gt; Ethernet-＆gt; WebServer）并替换包含“Ethenet” .h“by”UIPEthernet.h“。

Answer 4

关于netheads回答，我在服务器端收到POST数据时遇到问题。它正在接收标题信息，我无法使用$ _POST或任何其他方式访问帖子数据。我发现指定内容类型解决了这个问题。只需按如下方式更改HTTP标头部分：

    Stash::prepare(PSTR("POST http://$F/$F.csv HTTP/1.0" "\r\n"
                    "Host: $F" "\r\n"
                    "Content-Length: $D" "\r\n"
                    "Content-Type: application/x-www-form-urlencoded" "\r\n"
                    "\r\n"
                    "$H"),
        website, PSTR(PATH), website, stash.size(), sd);

Answer 5

Arduino v1.6.12

 #include <EtherCard.h>

// your variable

#define PATH    "example.php"
#define VARIABLE    "test"

// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };

const char website[] PROGMEM = "www.google.com";

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
  Serial.begin(57600);
  Serial.println("\n[webClient]");

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
    Serial.println( "Failed to access Ethernet controller");
  if (!ether.dhcpSetup())
    Serial.println("DHCP failed");

  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
  ether.printIp("DNS: ", ether.dnsip);  

  if (!ether.dnsLookup(website))
    Serial.println("DNS failed");

  ether.printIp("SRV: ", ether.hisip);
}

void loop () {
  ether.packetLoop(ether.packetReceive());

  if (millis() > timer) {
    timer = millis() + 10000;

    byte sd = stash.create();
    stash.print("variable=");
    stash.print(VARIABLE);
    stash.print("&action=Submit");
    stash.save();

    // generate the header with payload - note that the stash size is used,
    // and that a "stash descriptor" is passed in as argument using "$H"
    Stash::prepare(PSTR("POST http://$F/$F.csv HTTP/1.0" "\r\n"
                        "Host: $F" "\r\n"
                        "Content-Length: $D" "\r\n"
                        "\r\n"
                        "$H"),
            website, PSTR(PATH), website, stash.size(), sd);

    // send the packet - this also releases all stash buffers once done
    ether.tcpSend();
  }
}

使用Arduino和ENC28J60以太网LAN网络模块发送HTTP POST请求

5 个答案: