problem in receiving data from GSM module to 8051 microcontroller

Hi,
I am doing a project using 8051 and GSM module,SIM900B. I am using a 8051
microcontroller to send AT commands to GSM module and store the data in an
array and send the stored data as a text message to a mobile . I am able to
see both gsm module and microcontroller unit working perfectly when
connected to computer seperately through serial cable,but when I am
connecting both the devices with the help of a cross over cable, I am able
to send sms using microcontroller and GSM module but unable to receive any
data.I am using a MAX 232 on microcontroller board and SIM300_EVB_V2.02 for
placing the GSM module SIM900B.
expecting a reply at the earliest.

Thanks & Regards,
kamalesh.

	   
					
---------------------------------------		
Posted through http://www.EmbeddedRelated.com

On 11/10/2010 8:37 AM, kamalesh wrote:
> Hi,
> I am doing a project using 8051 and GSM module,SIM900B. I am using a 8051
> microcontroller to send AT commands to GSM module and store the data in an
> array and send the stored data as a text message to a mobile . I am able to
> see both gsm module and microcontroller unit working perfectly when
> connected to computer seperately through serial cable,but when I am
> connecting both the devices with the help of a cross over cable, I am able
> to send sms using microcontroller and GSM module but unable to receive any
> data.I am using a MAX 232 on microcontroller board and SIM300_EVB_V2.02 for
> placing the GSM module SIM900B.
> expecting a reply at the earliest.

Go to www.8052.com and post your question on the forums there.
Ask for Erik Malund, he knows everything.
Hans



--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

In message <rKGdneD-9NayM0fRnZ2dnUVZ_oCdnZ2d@giganews.com>, kamalesh
<kamal.dahagam@n_o_s_p_a_m.gmail.com> writes
>Hi,
>I am doing a project using 8051 and GSM module,SIM900B. I am using a
>8051
>microcontroller to send AT commands to GSM module and store the data in
>an
>array and send the stored data as a text message to a mobile . I am
>able to
>see both gsm module and microcontroller unit working perfectly when
>connected to computer seperately through serial cable,but when I am
>connecting both the devices with the help of a cross over cable, I am
>able
>to send sms using microcontroller and GSM module but unable to receive
>any
>data.I am using a MAX 232 on microcontroller board and SIM300_EVB_V2.02
>for
>placing the GSM module SIM900B.
>expecting a reply at the earliest.

Your serial cable is incorrectly wired.

-- 
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/