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GSM click
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Author: MikroElektronika Team
Last Updated: 2018-01-21
Category: GSM / GPRS
Downloaded: 21335 times
Followed by: 4 users
GSM click is the easiest way to add GSM/GPRS communication to your device. The click features Telit's GL865-QUAD. GSM click runs either on 3.3V or 5V power supply and communicates with the target microcontroller via UART interface.
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mikroSDK Library Blog
Library Description
The library carries a generic command parser adopted for AT command based modules. Generic parser.
Key functions:
gsm_cmdSingle - Sends a provided command to the module.
gsm_setHandler - Handler assignation to the provided command.
gsm_modulePower - Turns on the module.
Examples Description
The example demo application waits for the cal, 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 initialization, the module must be turned on, and in addition to this, the hardware flow control should also be turned 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 format.
void applicationInit()
{
// MODULE POWER ON
gsm_hfcEnable( true );
gsm_modulePower( true );
// MODULE INIT
gsm_cmdSingle( "AT" );
gsm_cmdSingle( "ATE0" );
gsm_cmdSingle( "AT+IFC=2,2" );
gsm_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.
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.