AN2385 Freescale Semiconductor / Motorola, AN2385 Datasheet - Page 18

• Manufacturer Part Number: AN2385
• Description: GPRS Wireless Internet Connectivity Using DragonBall and Palm OS Based PDAs Application Note
• Manufacturer: Freescale Semiconductor / Motorola

Guidelines for Porting
5.3.1 Initiating a GSM Call
Click on the numeric buttons in the sequence of the number to be dialed. When a numeric button is clicked,
the corresponding number appears on the mobile phone’s screen. This operation also validates the
connection between the PDA and the phone. After the entire number sequence has been sent to the phone,
click TALK. This initiates the calling process and the call tones (busy or ring) can be heard on the phone.
When the conversation is over, click OFF to end the call.
5.3.2 Receiving a GSM Call
Ringing indicates an incoming call. Click TALK to answer the call. When the conversation is over, click
OFF to end the call.
5.3.3 Browsing the Internet over GPRS
To start GPRS-based Internet browsing, click Go GPRS WWW. The GPRS initialization process starts,
and takes a short period of time to complete. When the initialization process is complete, the GSM-GPRS
application terminates by launching the Eudora Web browser. Follow the on-screen instructions. When
prompted, enter a URL and click OK. The Web page appears after a short period of time. Refer to the
Eudora browser documentation for information on using the browser program.
To exit, use the Exit Browser option available in the Eudora browser application. If you exit the browser
program in any other way, the phone remains in data mode, and must be turned off and on again in order to
make and receive voice calls.
6 Guidelines for Porting
The GSM-GPRS program is designed to be simple, small, and easily ported. Porting options described in
the following sections include:
6.1 Porting to Another Service Provider
The reference implementation of the GSM-GPRS program assumes that the phone service provider is
T-Mobile. To port the application to another GPRS service provider, you must obtain two important
parameters from the service provider. These are:
You can then change these parameter strings in the GSM-GPRS application source code. Compile and link
the project to create a new
6.2 Porting to Another Operating System
Porting this application to another DragonBall-based operating system, such as Symbian, Windows CE, or
eLinux, requires rewriting the source code to fit the application framework of the new operating system,
while maintaining the same program logic. The rewriting required is therefore substantial relative to the
program size. However, because the program is very small, rewriting should not require substantial effort
for a programmer who is already familiar with the target operating system.
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Porting to another service provider
Porting to another operating system
Parameter string for the command AT+CGDCONT
Parameter string for the command ATD
.prc
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