[uClinux-dev] MCF5249, uClinux and MODEM AT Commands

Manigandan.V manigandanv at myw.ltindia.com
Mon Mar 31 05:05:40 EST 2003

 You can use pppd & chat utilities for this purpose .
Check the man pages of pppd & chat in linux. (You may get chat scripts in
uClinux mail archives itself)
You can check the response from modem by checking log files generated by
syslog .

for simple modem testing use tip followed by /dev/ttyS1 and send AT commands


> Hi Friends,
> I am working with Coldfire Processor MCF5249. I am
> using ttyS0 port of the board for downloading the
> image and i have connected ttyS1 port with a MODEM.
> Now i need to send AT commands to MODEM from the
> uClinux image downloaded in the board. For that i need
> to open the ttyS1 and send these AT Commands and get
> the acknowledgement from the MODEM.
> What changes do i have to make in the uClinux image
> for sending the AT commands to the ttyS1.
> To do all these i need some experts advice for sending
> the AT Commands to the ttyS1 from the uClinux image in
> the board. Please help me in doing this.
> Thanks in advance for those who are going to help me.
> Karthick Somalinga

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