can't use fopen() with a modem????

Unknown · March 1999

I am trying to open my modem to dial i number but I cant seem to get it open for command mode when using "fopen()".

I open "com1:" and that is OK, I get now error.

But it doesnt activate the "TR" indicator on the modem.

When I us ethe hyperterminal to "connect" to com1:

or echo atdt >com1: the "TR" indicator lights up.

But I can't seem to get it to work with "fopen()"

Any ideas?

Unknown · March 1999

: I am trying to open my modem to dial i number but I cant seem to get it open for command mode when using "fopen()".

: I open "com1:" and that is OK, I get now error.

: But it doesnt activate the "TR" indicator on the modem.

: When I us ethe hyperterminal to "connect" to com1:

: or echo atdt >com1: the "TR" indicator lights up.

: But I can't seem to get it to work with "fopen()"

:

: Any ideas?

Hi,

After you opened stream with fopen(), did you use

fprintf() to output "atdt" string to the stream?

It should work.

Eugene.

Unknown · March 1999

: : I am trying to open my modem to dial i number but I cant seem to get it open for command mode when using "fopen()".

: : I open "com1:" and that is OK, I get now error.

: : But it doesnt activate the "TR" indicator on the modem.

: : When I us ethe hyperterminal to "connect" to com1:

: : or echo atdt >com1: the "TR" indicator lights up.

: : But I can't seem to get it to work with "fopen()"

: :

: : Any ideas?

: Hi,

: After you opened stream with fopen(), did you use

: fprintf() to output "atdt" string to the stream?

: It should work.

: Eugene.

Unknown · March 1999