不稳定的Arduino Web服务器

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我离开互联网，我正在使用Web服务器示例的修改版本来测试我的代码。事实上，它一开始确实有效。但是在设置端口转发后，连接突然变得不稳定。它连接并工作了几分钟，然后突然间我什至无法ping它。尝试 ping Arduino 会导致请求超时。在线研究表明 2 种可能性：

1.( 所有内存都用完了
2.(以太网防护板出现故障

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。

我高度怀疑屏蔽有故障，因为它在运行时会变得非常热。另外，它是一个仿冒品。但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。

当RAM不够时，您的Arduino将不可预测地运行。在此代码中，有许多常量字符串。您应该将这些字符串存储在闪存中以节省 RAM。为此，请使用 F(( 宏。例如。client.println(F("HTTP/1.1 200 OK"((;

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