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sending sms in pdu mode

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stanlyabrahamchacko

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i send sms from my sony ericcson using hyperterminal in pdu.then i cut the usb cable and connect tx of mc to that of rx of phone &vice versa.then ground 2 ground.i did it using at89c51.i send the ascii of enter &ctrl+z.but it did n't works.please help me.if somebody gives the code 4 8051 it will be very helpful.


i found in the board that somebody did it in the pic and found cms error 304.how can we detect that error while using mc


thanks in advance.....
 

you need to simulate the condition of error or read the message?????...

the AT command pdf the error conditions also... try to simulate it as per pdf
 

Hi,

cms error 304, means invalid PDU parameter was given in command. To detect it you have to read phone response after you issue the command. (try on hyperterminal)

Get the AT commands set for your phone. AT command set for lot of sonyericsson phone are available on the web. (you can download them as pdf files). To understand PDU format see following links,
**broken link removed**
SMS controller, with ATtiny2313 and T10s mobile phone

You can even encode PDU to text and vice versa using a uC.

First it's better to try AT commands with hyperterminal and confirm outputs. Then you can implement those commands using a uC.
Hope this helps you.
 

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