Library Description

The library carries a generic command parser adopted for AT command based modules. Generic parser.

Key functions:

• gsm4_cmdSingle - Sends a provided command to the module.
• gsm4_setHandler - Handler assignation to the provided command.
• gsm4_modulePower - Turns on the module.

Examples Description

The example demo application waits for the call, and after the call is received the parser will get hang up.

This code snippet shows how a generic parser should be properly initialized. Before the intialization module must be turned on, and in addition to this the hardware 
flow control should also be turner on.

Commands:

• The first command negotiates the baud rate with the module.
• The second command turns the echo off.
• The third command enables hardware flow control - necessary in case of UART polling.
• The fourth command sets up default message foramt.
   

// MODULE POWER ON
 gsm4_hfcEnable( true );
 gsm4_modulePower( true );

// MODULE INIT
 gsm4_cmdSingle( "AT" );
 gsm4_cmdSingle( "ATE0" );
 gsm4_cmdSingle( "AT+IFC=2,2" );
 gsm4_cmdSingle( "AT+CMGF=1" );

Along with the demo application, timer initialization functions are provided. Note that the timer is configured according to the default development system and MCUs, changing the system or MCU may require an update of timer init and timer ISR functions.
 

Other mikroE Libraries used in the example:

• String
• Conversion

Additional notes and information

Depending on the development board you are using, you may need USB UART click,  USB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.