Thanks for the correction. Now I want to receive the reply from at command. How do I implement: - (void)rfcommChannelData:(IOBluetoothRFCOMMChannel*)rfcommChannel data:(void *)dataPointer length:(size_t)dataLength; ? Where should I put this code? Thanks... Nathanael --- Nicko van Someren <nicko@nicko.org> wrote:

On 16 Apr 2004, at 4:52, Nathanael P wrote:

...

... I am

...

going to write a program with xcode that could

sends

...

at command using bluetooth and recieve response

(like

...

hyper terminal in windows).

...

[mRFCOMMChannel writeSync:"at+cmgf=1/n"

length:16];

...

...

Do I make mistakes? Thanks for your help.

There are three mistakes on that last line.

Firstly, the length of the data you are sending

looks like it was

intended to be 10 bytes, so you need to set the

length to that. Since

you are only sending strings rather than binary data

I would recommend

using something like:

char *s;

...

s = "<your command to send>";

[mRFCOMMChannel writeSync: s length: strlen(s)];

Secondly, you have the slash the wrong way around;

I'm pretty sure that

you meant to write "at+cmgf=1\n"

Thirdly, you shouldn't be using "\n" (new line)

anyway, you should be

sending a "\r" (carriage return) instead.

Cheers,

Nicko

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