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Tagge
Joined: 23 Aug 2005
Posts: 93
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| Email with GPRS, or how to create a .txt file? |
 Posted: Mon Jun 22, 2009 3:19 am |
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Hi, does anyone know if there is some max size of an email when using GPRS? I'm using an Telit module and can only send about 1000 bytes at a time?? or do I have something wrong in my code.
I have tried several ways, now using an global buffer of 3000 chars  but it's always only about 800 bytes that comes through.
In my program I can see that all is transmitted to the module, but it isn't then in the email, very confusing.
| Code: |
void send_gprs_mail(){
char my_str[21]="", OK=0;
int32 i=0, j=0, x=0;
const int CZ=0x1A;
for(i=0;i<20;i++)
my_str[i]=0;
//disable_interrupts(GLOBAL);
//disable_interrupts(int_TIMER0);
output_low(PIN_B2);// DTR On
//output_low(PIN_B5);//debug
fprintf(GPRS,"AT#EMAILD=%s,%s,0\r",EMAIL_ADDRESS,UNIT_ID);
for(i=0;i<20;i++){
my_str[i]=my_timed_getc();
if(my_str[i]=='>'){ i=20;OK=1;}
}
my_str[i+1]=0;
fprintf(rs232,"%s\r\n",my_str);
if(OK){
fprintf(GPRS,"%s\r\n%02u-%02u-%02u;%02u:%02u\r\n",UNIT_ID,T_YEAR,T_MONTH,T_DAY, T_HOUR,T_MIN);
get_email_body();
fprintf(GPRS,"%s",E_MAIL_BODY);
delay_ms(2000);
fprintf(GPRS,"%c\r",CZ);
for(i=0;i<20;i++){
my_str[i]=my_timed_getc();
if(my_str[i]=='K') i=20;
}
my_str[i+1]=0;
fprintf(rs232,"%s\r\n",my_str);
delay_ms(5000);
}
else fprintf(rs232,"No >!\r\n");
output_high(PIN_B2);// DTR Off
//enable_interrupts(GLOBAL);
//enable_interrupts(int_TIMER0);
}
// get saved from ext flash /////////////////////////////////
//////////////////////////////////////////////////////////////////
void get_email_body(){
int32 i=0, j=0, x=0;
int8 my_i=0, my_page_count=0;
BYTE temp_buffer[100];
//disable_interrupts(GLOBAL);
j=0;
if(PAGE_COUNTER>30){my_page_count=PAGE_COUNTER-30;j=ADDRESS_COUNTER-3000;}
else{my_page_count=PAGE_COUNTER; j=DATA_ADDRESS;}
x=0;
for(i=j;i<ADDRESS_COUNTER;i++){//från address och 100 fram
flashReadBlock(i,&E_MAIL_BODY[x],1);
if((E_MAIL_BODY[x] != 0x0) && (E_MAIL_BODY[x] != '!') && (E_MAIL_BODY[x] != 0x1A) && (E_MAIL_BODY[x] != 0x03)&& (E_MAIL_BODY[x] != 0x02))
x++; }
E_MAIL_BODY[x]=0x0;
fprintf(RS232,"%s\r\n", E_MAIL_BODY);
//enable_interrupts(GLOBAL);
} |
I'm using a PIC18F97J60.
Last edited by Tagge on Mon Jun 22, 2009 9:30 am; edited 1 time in total |
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Tagge
Joined: 23 Aug 2005
Posts: 93
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| Ascii buffer to .txt? |
| Posted: Mon Jun 22, 2009 7:22 am |
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Just figured it out, the Telit module cant take larger e-mail bodys than about 1kB. But an attached file can be much larger,
that raises the question, how can I make a ascii buffer to an .txt file?
to be sent with the e-mail.
It dont have to have the .txt end, I suppose it would work with any ending as long it only containes ascii chars? |
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sri
Guest
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| data transfer with gprs modem |
| Posted: Mon Jun 29, 2009 1:48 am |
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hi,
did u finished the programm..i am into the project few days unable to communicate with the gprs module at commands can u please help me with the code.expecting a good response...
thanks in advance |
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