AnsweredAssumed Answered

ppp with gprs modem

Question asked by Selcuk Mustafa on Mar 3, 2015
Latest reply on May 15, 2015 by Selcuk Mustafa

Hi,

 

I'm running MQX v4.1.1 on TWR-K64F120M + TWR-SER. When I try to connect to internet with a gsm modem (i.e. Cinterion BGS2T) through shell commands, I get an error. Command flow is as below:

 

===================

shell> gsm init

shell> gsm connect

shell> ppp connect ittyf:

PPP: Initialized on 'ittyf:'.

PPP: Attempting to establish connection. Please wait...

..........

PPP: Failed to connect to remote peer.

PPP: Connection released.

PPP: The connection attemp failed because the modem (or other connecting device) on the remote computer is out of order.

PPP: Connection released.

===================

 

gsm init: sends command "at+cgdcont=1,\"IP\",\"internet\",0.0.0.0\r" to modem

gsm connect: sends command "atdt*99#\r" to modem and initiates an internet call. After this command I get an "CONNECT" word. Then MQX starts to send some PPP handshake. ISP sends some but I got the error after waiting a few seconds.

Modem is connected to TWR-SER board RS232 port ( ittyf: ).

 

I read this topic: PPP over serial. But I guess it's about an old version of MQX. For example: I couldn't find the functions _io_ras_install("ras:") or _io_dun_install("dun:") in my code to make some fixes.

 

Have a nice day.

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