Hi,
I've bought an Arduino nano Ethernet Shield (see below) and i'm trying to send some UDP packets to it.
I've used both EtherCard and UIPEthernet libraries but for UDP i can't see any messages on it.
I know it's working because, using EtherCard "backSoon" example i can connect to the ip assign and see the "hello world" page.
I tried using the examples of both Ethercard and UIPEthernet for UDP server and from my laptop, using Packet Sender i trying sending some messages but nothing happened.
Here is my code:
/*
* UIPEthernet UdpServer example.
*
* UIPEthernet is a TCP/IP stack that can be used with a enc28j60 based
* Ethernet-shield.
*
* UIPEthernet uses the fine uIP stack by Adam Dunkels <adam@sics.se>
*
* -----------------
*
* This UdpServer example sets up a udp-server at 192.168.0.6 on port 5000.
* send packet via upd to test
*
* Copyright (C) 2013 by Norbert Truchsess (norbert.truchsess@t-online.de)
*/
#if defined(__MBED__)
#include <mbed.h>
#include "mbed/millis.h"
#define delay(x) wait_ms(x)
#define PROGMEM
#include "mbed/Print.h"
#endif
#include <UIPEthernet.h>
#include "utility/logging.h"
EthernetUDP udp;
#if defined(ARDUINO)
void setup() {
#endif
#if defined(__MBED__)
int main() {
#endif
#if ACTLOGLEVEL>LOG_NONE
#if defined(ARDUINO)
LogObject.begin(9600);
#endif
#if defined(__MBED__)
Serial LogObject(SERIAL_TX,SERIAL_RX);
#endif
#endif
uint8_t mac[6] = {0x00,0x02,0x02,0x03,0x04,0x05};
Ethernet.begin(mac,IPAddress(192,168,1,46));
int success = udp.begin(5000);
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("initialize: "));
LogObject.uart_send_strln(success ? "success" : "failed");
LogObject.uart_send_strln(UIPEthernet.localIP());
#endif
#if defined(ARDUINO)
}
void loop() {
#endif
#if defined(__MBED__)
while(true) {
#endif
//check for new udp-packet:
int size = udp.parsePacket();
if (size > 0) {
do
{
char* msg = (char*)malloc(size+1);
int len = udp.read(msg,size+1);
msg[len]=0;
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("received: '"));
LogObject.uart_send_str(msg);
#endif
free(msg);
}
while ((size = udp.available())>0);
//finish reading this packet:
udp.flush();
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_strln(F("'"));
#endif
int success;
do
{
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("remote ip: "));
#if defined(ARDUINO)
LogObject.println(udp.remoteIP());
#endif
#if defined(__MBED__)
LogObject.printf("%d.%d.%d.%d",udp.remoteIP()[0],udp.remoteIP()[1],udp.remoteIP()[2],udp.remoteIP()[3]);
#endif
LogObject.uart_send_str(F("remote port: "));
LogObject.uart_send_decln(udp.remotePort());
#endif
//send new packet back to ip/port of client. This also
//configures the current connection to ignore packets from
//other clients!
success = udp.beginPacket(udp.remoteIP(),udp.remotePort());
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("beginPacket: "));
LogObject.uart_send_strln(success ? "success" : "failed");
#endif
//beginPacket fails if remote ethaddr is unknown. In this case an
//arp-request is send out first and beginPacket succeeds as soon
//the arp-response is received.
}
while (!success);
success = udp.println(F("hello world from arduino"));
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("bytes written: "));
LogObject.uart_send_decln(success);
#endif
success = udp.endPacket();
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("endPacket: "));
LogObject.uart_send_strln(success ? "success" : "failed");
#endif
udp.stop();
//restart with new connection to receive packets from other clients
#if ACTLOGLEVEL>=LOG_INFO
LogObject.uart_send_str(F("restart connection: "));
LogObject.uart_send_strln(udp.begin(5000) ? "success" : "failed");
#endif
}
}
#if defined(__MBED__)
}
#endif
and i get the output:
ENC28J60::init INFO: Chip erevid=6 initialization completed.
initialize: success
192.168.1.46
can someone help me identify what i'm doing wrong and why in "webserver" mode the shield is workign and for UDP it isn't?
