我一直在拼命地尝试在我的 Arduino uno 上运行以太网 > DHCPAddressPrinter 示例，该 Arduino uno 安装有以太网屏蔽，但没有效果，每次运行它都会返回错误
使用 DHCP 配置以太网失败
我尝试了各种各样的方法，禁用防火墙，重置板/屏蔽，一开始它给了我一个 ip，但那是唯一一次，我关闭了路由器，当我打开它时，我不能为以太网屏蔽分配 MAC 和 IP。
有谁知道如何解决这个问题？
这是我试图运行的草图
/*
DHCP-based IP printer
This sketch uses the DHCP extensions to the Ethernet library
to get an IP address via DHCP and print the address obtained.
using an Arduino Wiznet Ethernet shield.
Circuit:
* Ethernet shield attached to pins 10, 11, 12, 13
created 12 April 2011
modified 9 Apr 2012
by Tom Igoe
*/
#include <SPI.h>
#include <Ethernet.h>
// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = {
0xDE, 0xAD, 0xBD, 0xEF, 0xFE, 0xED
};
// Initialize the Ethernet client library
// with the IP address and port of the server
// that you want to connect to (port 80 is default for HTTP):
EthernetClient client;
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
// this check is only needed on the Leonardo:
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// start the Ethernet connection:
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
// no point in carrying on, so do nothing forevermore:
for(;;)
;
}
// print your local IP address:
Serial.print("My IP address: ");
for (byte thisByte = 0; thisByte < 4; thisByte++) {
// print the value of each byte of the IP address:
Serial.print(Ethernet.localIP()[thisByte], DEC);
Serial.print(".");
}
Serial.println();
}
void loop() {
}