Re: problem with sending AT command in php

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On 15 November 2011 15:12, Mike Mackintosh
<mike.mackintosh@xxxxxxxxxxxxxxx> wrote:
>
>
> On Nov 15, 2011, at 8:25, Richard Quadling <rquadling@xxxxxxxxx> wrote:
>
>> On 15 November 2011 11:50, a dehqan <dehqan65@xxxxxxxxx> wrote:
>>> \n is for Linux
>>> \r is for Windows
>>>
>>> On 11/14/11, Richard Quadling <rquadling@xxxxxxxxx> wrote:
>>>> On 12 November 2011 20:02, a dehqan <dehqan65@xxxxxxxxx> wrote:
>>>>> dio_write($handle, 'AT') & dio_write($handle, "AT") make firefox times out
>>>>> on Waiting for localhost ... .
>>>>> But dio_write($handle, "AT\n") makes it prints AT exactly the same command
>>>>> or  Atttt > Atttt , ..
>>>>>
>>>>> On Sat, Nov 12, 2011 at 10:02 PM, Negin Nickparsa
>>>>> <nickparsa@xxxxxxxxx>wrote:
>>>>>
>>>>>> are you sure about ATD03518726535\n?
>>>>>>
>>>>>>  can you try if ( dio_write($handle, 'AT') )?
>>>>>>
>>>>>
>>>>
>>>> Don't use \n, use \r.
>>>>
>>>> http://en.wikipedia.org/wiki/AT_commands#Example_session
>>>>
>>>>
>>>>
>>>> --
>>>> Richard Quadling
>>>> Twitter : EE : Zend : PHPDoc : Fantasy Shopper
>>>> @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea :
>>>> fan.sh/6/370
>>>>
>>>
>>
>> No, \r is the requirement of the modem. Nothing to do with the OS.
>>
>> Windows uses \r\n as its line terminators, but when you talk to a
>> modem, you use \r.
>>
>>
>>
>> --
>> Richard Quadling
>> Twitter : EE : Zend : PHPDoc : Fantasy Shopper
>> @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea :
>> fan.sh/6/370
>>
>> --
>> PHP General Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>
>
> I've had better luck with PHP_EOL instead of \r or \n.

I think I've not explained myself properly.

The modem wants a carriage return. That is a \r.

It doesn't matter what OS you are on. If you don't send the right
string to the modem, then the modem won't process it properly.

If your OS maps \r to PHP_EOL, then, obviously PHP_EOL will be just
fine. But I would recommend ...

<?php
define('CR', chr(13));
?>



-- 
Richard Quadling
Twitter : EE : Zend : PHPDoc : Fantasy Shopper
@RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea :
fan.sh/6/370

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