Arduino udp ping

Question

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首先解释一下我的目标我试图通过UDP （用户数据报协议）协议控制我的机器人前进，后退，右移，左移和停止

• 我正在使用
  • Arduino Mini Atmega168
  • Lan ENC28J60
  • 路由器Tp-Link 150Mbps Wireless N Nano
  • 电机驱动器L293D

• 和C＃中的应用程序，按钮前进，后退，左，右和停止

  arduino ip地址是192.168.178.60我正在ping那个地址没有问题，但如果我试图点击按钮来控制或点击任何按钮更快，并留下更多的时间示例前进它阻止或留下了阻止，我必须重新启动arduino 才能恢复我的ping。主要问题是为什么我这么快就失去了连接。

这是我的代码

#include "EtherShield.h"
//8 or 16 bit integer
uint8_t mymac[6] = {0xCF,0x70,0x7C,0xE4,0x8A,0xB8};
uint8_t myip[4] = {192,168,178,60};
uint16_t MYWWWPORT = 80; 

#define BUFFER_SIZE 750

static uint8_t buf[BUFFER_SIZE+1];

EtherShield es=EtherShield();

uint16_t dat_p;

///----------------------------------------------------------
void setup(){

Setup_Pins();
es.ES_enc28j60Init(mymac);
es.ES_init_ip_arp_udp_tcp(mymac,myip, MYWWWPORT);

} 


///----------------------------------------------------------

void loop(){

// read packet, handle ping and wait for a tcp packet:
buf[IP_PROTO_P]=0;
dat_p=es.ES_packetloop_icmp_tcp(buf,es.ES_enc28j60PacketReceive(BUFFER_SIZE, buf));

if (buf[IP_PROTO_P]==IP_PROTO_UDP_V){
    Motor_Control();
    buf[IP_PROTO_P]=0;
    }
} 


//----------------------------------------------------------

void Setup_Pins(){

    pinMode(4, OUTPUT); digitalWrite(4, 0);//lev
    pinMode(5, OUTPUT); digitalWrite(5, 0);//lev
    pinMode(6, OUTPUT); digitalWrite(6, 0);//desen
    pinMode(7, OUTPUT); digitalWrite(7, 0);//desen

} 

///----------------------------------------------------------

void Motor_Control(){

    char* recv = (char*)buf + 42;

// forward


    if (strncmp(recv, "forward", 7) == 0) { 
                    digitalWrite(4, 0);
                    digitalWrite(5, 1);
                    digitalWrite(6, 0);
                    digitalWrite(7, 1);
    }

//left


    if (strncmp(recv, "left", 4) == 0) { 
                    digitalWrite(4, 1);
                    digitalWrite(5, 0);
                    digitalWrite(6, 0);
                    digitalWrite(7, 1);
    }

//stop



    if (strncmp(recv, "stop", 4) == 0) { 
                    digitalWrite(4, 0);
                    digitalWrite(5, 0);
                    digitalWrite(6, 0);
                    digitalWrite(7, 0);
    }

//right


    if (strncmp(recv, "right", 5) == 0) { 
                    digitalWrite(4, 0);
                    digitalWrite(5, 1);
                    digitalWrite(6, 1);
                    digitalWrite(7, 0);
    }

//back


    if (strncmp(recv, "back", 4) == 0) { 
                    digitalWrite(4, 1);
                    digitalWrite(5, 0);
                    digitalWrite(6, 1);
                    digitalWrite(7, 0);
    }
        delay(6);

} 


///----------------------------------------------------------

Answer 1

我不知道您的网络堆栈，但ES_packetloop_icmp_tcp听起来不适用于 UDP 流量。我假设它处理ICMP和/或TCP数据包。 ICMP是公共ping命令使用的数据包类型，ICMP 不与UDP相同。

编辑：也许this有助于您入门。