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SIM300 AT# Commands Problem

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javani_saeid

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Hi friends

I have a SIM300 Module and am trying to Get files from an FTPServer

I have read many documents and threads that use AT commands with "#" such as "at#gprsmode=1"

but my module doesn't accept none of commands in this format!

whats the problem?

thanks guys
 

FvM

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I have read many documents and threads that use AT commands with "#" such as "at#gprsmode=1"
Apparently no SIMCOM documents. There's no AT# command used by SIMCOM modems. You better refer to the SIMCOM manuals and application notes.
 
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javani_saeid

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FvM

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You are right, AT# commands are apparently provided as an extended interface to the TCP/IP stack. Curiously it's not mentioned in the basic Simcom TCP/IP documents.

I'm not sure if AT# commands are available for all Simcom GPRS modems, e.g. basic SIM300. Did you try to enable extended error messages? You should be able to distinguish between command unimplemented, syntax error and command not allowed at the present phase.
 
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javani_saeid

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Thanx for your attention dude

I read some docs and now know that my module (SIM300S) doesn't support AT# commands, So I can't use those commands

So, I tried to use just TCP/IP commands such as "AT+CIPMODE=1" but result is:

AT+CIPMODE?
+CIPMODE: 0
OK
AT+CIPMODE=1
ERROR

this means that I can get state of CIPMODE, but I'm not able to change it's state!

sorry for bothering you!
but my goal is to download files (with about 4MB size) from an FTP Server. Can you help me pls?
 

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CIPMODE=1 may be unsupported by your SIM300. FTP transmission needs simultaneous connections of control and data port. I'm not sure if it's possible with SIM300 at all.
 

javani_saeid

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Tanx for your time

I almost gave up with AT commands

I switched to Plan B! (Dial-up GPRS with WinCE 6.0)
my processor is ARM11

but now I have another problem! Dialing-up just works with Hayes-Compatible on COM1
but my module is connected to COM2
how can I solve this problem?

Tanks alot!
 

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