Please advise : CDC example with USB modem

sumate — Wed, 04 Jul 2012 10:43:34 GMT

Hello all,

Now, I'm trying to communicate with USB modem (3G dongle) by CDC_Serial example project which I found in "Freescale MQX 3.8/usb/host/examples/cdc/".

Everything look very well, I can send AT-Commands to query and get their reply correctly.

Until when I dial to GPRS by the command "ATDT*99***1#", Which I expect to receive "CONNECT" response.

But, I never gotten this reply, The modem just switch to data mode and don't accept command till reset.

Has someone give me an advise this problem, Please?

Re: Please advise : CDC example with USB modem

kario303 — Mon, 06 Aug 2012 13:14:46 GMT

maybe try setting pdp context first. Then ATD, not ATDT ?

> at+cgdcont=1,"IP","your.isp.com"
< OK
> atd*99***1#
< CONNECT

Also, try exiting data mode with +++