Using The Serial Rs232 Port; At Commands - Intercel SAM3G+ User Manual

8.2 Using the Serial RS232 port

The RS232 default configuration is :
- Terminal speed : 115200bps (+IPR=115200)
- Data format : 8 data bits 1 stop bit (+ICF=3,3)
- Hardware RTS, CTS flow control (+IFC=2,2)
- No auto-answer (S0=0)
There are 6 serial data signals available at the RJ45 connector, namely DCD, DTR, RXD, TXD,
RTS and CTS. There is an option for RI (Ring Indicator) signal instead of DTR signal.
This configuration allows any external controller to communicate with the SAM3G+ at 115200bps
over the serial port. The external device can set up the SAM3G+ modem using AT commands,
can tranfer Circuit-switched data or Packet-switched data.
With packet-switched data, the external device must be capable of communicating using PPP,
TCP/IP or UDP/IP.
c. AT commands :
The SAM3G+ modem supports most of the AT commands specified in the following standards :
- 3GPP TS 27.005 : Control SMS functions for devices on GSM/WCDMA networks
- 3GPP TS27.007 : Control devices operating on GSM/WCDMA networks
- ITU-T V.250 : Control serial communications over an asynchronous interface
For details of the AT commands, refer to the "Supported AT command" and "Extended AT
commands" manuals.
Setup example : Serial port connection to a PC
Intercel Pty. Ltd. A.C.N. 007 077 161
33 Glenvale Crescent
Mulgrave VIC. Australia 3170
Email : intercel@intercel.com.au
Internet : www.intercel.com.au
Ph : 61 3 9239 2000 Fax : 61 3 9561 2614
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