I am using an Arduino Mega with a Ethernet Shield.
I have a program that datalogs and sends emails out every minute.
I can collect data and send out email once then on second loop through it freezes at connecting and just hangs there.
Any ideas?
Any ideas?
I have one.
Post your code.
sorry for the delay,
Here is how i am sending the emails with attachments. The code it actually in is alot bigger but the email sending is the same principal.
#include <Ethernet.h>
#include <SPI.h>
#include <SD.h>
char Sfile[]= {"S00DATA.csv"};
char filetype[] = {"csv"};
byte slave_address = 2;
byte SLAVE_END = 3;
byte mac[] = { 0x90, 0xA2, 0xDA, 0x00, 0x6D, 0xD6 }; // Arduino's artificial mac address
byte ip[] = { 0, 0, 0, 0 }; // my ip
byte server[] = { 0, 0, 0, 0 }; // my smtp server ip
int time = 5000;
int wait = 2000;
File datatxt;
Client client(server, 25);
static const char cb64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const int chipSelect = 4;
char Sender_email[] ={"blah@gmx.com"};
void setup()
{
delay(time);
Ethernet.begin(mac, ip);
Serial.begin(9600);
delay(1000);
pinMode(10,OUTPUT);
Serial.print("Initializing SD card...");
if (!SD.begin(chipSelect)) {
Serial.println("Card failed, or not present");
// don't do anything more:
return;
}
Serial.println("card initialized.");
}
void loop()
{
Serial.println("connecting...");
if (client.connect()) {
Serial.println("connected");
client.println("HELO itismeletschat"); /* say hello (statement after helo is needed but irrelevant)*/
delay(wait); /* wait for a response */
client.println("MAIL From: blah@gmx.com"); /* identify sender, this should be the same as the smtp server you are using */
delay(wait); /* wait for a response */
client.println("RCPT To:blahe@virelec.com"); /* identify recipient */
delay(wait); /* wait for a response */
client.println("DATA");
delay(wait); /* wait for a response */
client.println("Subject: text file attached");
client.print("Content-type: multipart/mixed; boundary=\"$boundary\" \r\n");
while(slave_address <= SLAVE_END){
add_attachment(slave_address);
slave_address++;
}
client.println("."); /* end email */
client.println("QUIT"); /* terminate connection */
delay(wait); /* wait for a response */
} else {
Serial.println("connection failed");
}
while (client.available()) {
char c = client.read();
Serial.print(c);
}
if (!client.connected()) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
slave_address = 0;
delay(300000);
}
}
void encodeblock(unsigned char in[3],unsigned char out[4],int len) {
out[0]=cb64[in[0]>>2];
out[1]=cb64[((in[0]&0x03)<<4)|((in[1]&0xF0)>>4)];
out[2]=(unsigned char) (len>1 ? cb64[((in[1]&0x0F)<<2)|((in[2]&0xC0)>>6)] : '=');
out[3]=(unsigned char) (len>2 ? cb64[in[2]&0x3F] : '=');
}
void encode() {
unsigned char in[3],out[4];
int i,len,blocksout=0;
while (datatxt.available()!=0) {
len=0;
for (i=0;i<3;i++){
in[i]=(unsigned char) datatxt.read();
if (datatxt.available()!=0) len++;
else in[i]=0;
}
if (len){
encodeblock(in,out,len);
for(i=0;i<4;i++) client.write(out[i]);
blocksout++; }
if (blocksout>=19||datatxt.available()==0){
if (blocksout) client.print("\r\n"); blocksout=0;
}
}
}
void add_attachment(byte slave){
client.print("--$boundary\r\n");
Sfile[1] =(slave/10 + 48);
Sfile[2] =(slave%10 + 48);
datatxt =SD.open(Sfile,FILE_READ);
client.print("Content-Type: ");
client.print(filetype);
client.print("; ");
client.print("name=");
client.println(Sfile);
client.print("Content-Disposition: attachment; ");
client.print("filename=");
client.println(Sfile);
client.println("Content-Transfer-Encoding: base64");
client.println("");
encode();
datatxt.close();
delay(wait);
}
it sends an email a few times then halfway through it seems to be cutting out and starting again.
SERIAL MONITOR:
disconnecting.
connecting...
connected
220 to5email2.gprs.rogers.com ESMTP server (InterMail vM.7.09.00.04 201-2219-102-106-20090410) ready Wed, 24 Aug 2011 14:33:47 -0400
250 to5email2.gprs.rogers.com
250 Sender <blah@gmx.com> Ok
250 Recipient <bla@virelec.com> Ok
354 Ok Send data ending with <CRLF>.<CRLF>
250 Message received: 20110824183353.IFDQ13635.to5email2.gprs.rogers.com@itismeletschat
221 to5email2.gprs.rogers.com ESMTP server closing connection
disconnecting.
connecting...
connected
220 to5email2.gprs.rogers.com ESMTP server (InterMail vM.7.09.00.04 201-2219-102-106-20090410) ready Wed, 24 Aug 2011 14:39:00 -0400
250 to5email2.gprs.rogers.com
250 Sender <blao@gmx.com> Ok
250 Recipient <bla@virelec.com> Ok
354 Ok Send data ending with <CRLF>.<CRLF>
connecting...
connection failed
connecting...
connection failed
connecting...
connection failed