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OrbWorks Community Forum • View topic - How to dial a phone number?
Page 1 of 1

PostPosted: Thu Nov 21, 2002 3:36 pm
by tdkr
Hi,
I have to dial a number through modem connected to my PalmSizePC. I was looking in MS Embased Visual C++ but it's realy sophisticated (by TAPI). I want only dial a number and later disconect. Are any easier metdos in C?

Sorry for my English.
Thank you for answers.

Mark

PostPosted: Thu Nov 21, 2002 6:11 pm
by guy
Open the Com port to which the modem is attached and send it "AT" commands. A simplified set are:

Send AT\r
Wait for OK
Send ATZ\r
Wait for OK
Send ATD<the number you want>\r
Wait for CONNECT

To disconnect:

Send +++ with no pause between characters
Wait for OK
Send ATH\r
Wait for OK



Guy
[url]mailto:pcform@pcform.net[/url]
http://www.pcform.net
PocketC CE API interface: http://www.networkdynamics.net/PCForm.html#library
PCForm and CE API forum: http://www.networkdynamics.net/forum

PostPosted: Fri Nov 22, 2002 12:03 am
by tdkr
After sending any comman modem returns me always 13.
What I do bad?

I wroted:
// sersend("ATZ\n");

int ret;
char tab[20];
int i,ii;

char recived;
int s;

sent(char dane, int length){

puts("Sending: ");
for(ii=0;ii<length;ii=ii+1)
{
sersend((char)tab[ii]);
puts((char)tab[ii]);
}
tab[ii]='\r';
sersend((char)tab[ii]);
}


main()
{
clear();
//I tested all com ports
ret = seropenex("COM5:", 9600, "8N1C", 50);

putsl("seropen(): " + ret);

tab[0]='A';
tab[1]='T';
sent(tab,2);

recived = serrecv();
while (!recived || recived==13) //it's returns 13 all the time :(
{
recived = serrecv();
}
}

PostPosted: Fri Nov 22, 2002 8:42 am
by guy
Have a look at the serial example in the CE knowledge base section of this board.

You should expect a 13 (carriage return) from the modem at the end of each string it sends you.

If you have echo enabled on the modem then it will send back to you each character that you send to it.

You can turn off echo with:

ATE0\r

Then the modem will just respond with AT\r whenever you send it a command.


Guy
[url]mailto:pcform@pcform.net[/url]
http://www.pcform.net
PocketC CE API interface: http://www.networkdynamics.net/PCForm.html#library
PCForm and CE API forum: http://www.networkdynamics.net/forum