【发布时间】:2018-06-14 09:51:13
【问题描述】:
我一直在尝试使用 Arduino 设置 Web 服务器。我有一个 UNO 和一个 HanRun HR91105A 我从互联网上下来,我正在使用 WebServer 示例的修改版本来测试我的代码。起初它确实有效。但是设置端口转发后,连接突然变得不稳定。它连接并工作了几分钟,然后突然我什至无法ping通它。尝试 ping Arduino 会导致请求超时。在线研究提出了两种可能性:
1.) 所有内存都用完了
2.) 以太网屏蔽故障
下面是我的代码
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
0x44, 0x00, 0x10, 0x20, 0x8C, 0x0A
};
IPAddress ip(192,168,1,90);
// Initialize the Ethernet server library
// with the IP address and port you want to use
// (port 80 is default for HTTP):
EthernetServer server(8081);
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// start the Ethernet connection and the server:
Ethernet.begin(mac, ip);
server.begin();
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}
void loop() {
// listen for incoming clients
EthernetClient client = server.available();
if (client) {
Serial.println("new client");
// an http request ends with a blank line
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you've gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == '\n' && currentLineIsBlank) {
// send a standard http response header
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connection: close");
client.println("Refresh: 2");
client.println();
client.println("<!DOCTYPE HTML>");
//-----------------Type in outputs below-------------------------------------
client.println("<html>");
client.print("Hello World!");
client.print("<p id='Header'>");
client.print("Sensor Data");
client.println("</p>");
client.print("<p id='Pressure'>");
client.print("Pressure:");
client.println("</p>");
client.print("<p id='Acceleration'>");
client.print("Acceleration:");
client.println("</p>");
client.println("<br /)");
client.println("</html>");
break;
//-----------------End of outputs--------------------------------------------
}
if (c == '\n') {
// you're starting a new line
currentLineIsBlank = true;
} else if (c != '\r') {
// you've gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);
// close the connection:
client.stop();
Serial.println("client disconnected");
}
}
此外,arduino 确实有一个静态 IP,所以我很确定这不是 DHCP 租约到期的问题。
我高度怀疑防护罩有故障,因为它在运行时会变得非常热。另外,它是仿冒品。但是我不能排除我的编码效率低下的可能性,因为我不是很有经验。任何帮助,将不胜感激。谢谢。
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