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GSM-GPS click
From MikroElektonika Documentation
GSM-GPS click
carries a SIM808 module that combines GSM/GPRS and GPS into a single device.
Ideal for remote tracking devices in any shape or form.
GSM-GPS click
Features and usage notes
The high-performance GSM/GPRS engine works
on quad-band GSM frequencies: 850, EGSM 900,
DCS 1800, PCS 1900 MHz. The GPS has a 1
second TTF (Time To First Fix) from a hot star
and tracking sensitivity of -165 dBm.
The board has two antenna connectors, one for
GSM the other for GPS. The bottom side has a
SIM card slot and a Micro USB connector for
interfacing with a PC.
GSM-GPS click communicates with the target
board MCU through mikroBUS™ UART
interface, with additional functionality provided
by STAT, PWRKEY, RTS, RS, and CTS. Beside
the mikroBUS™, the board has additional pins for
connecting speakers and a microphone to the
Schematic also available in PDF (http://cdn-
docs.mikroe.com/images/2/20/GSM-
GPS_click_schematic_v100.pdf)
GSM-GPS click
IC/Module
SIMCO
(http://simcom.ee/documents/SIM808/SIM808%
20SPEC_V1507.pdf)
Interface
UART, STAT, PWRKEY, RTS, RI, CTS
3.3V, 5V
www.mikroe.com/click/gsm-gps
(http://www.mikroe.com/click/gsm-gps)
GSM engine.
GSM-GPS click uses either a 3.3V or 5V power supply.
The following are the most importrant features of the GPRS module:
Quad-band 850/900/1800/1900MHz
•GPRS multi-slot class 12/10 •GPRS mobile station class B
•Compliant to GSM phase 2/2+ – Class 4 (2 W @ 850/900MHz)
– Class 1 (1 W @ 1800/1900MHz)
•Dimensions: 24*24*2.6mm
Power
supply
Website
•Weight: 3.3g •Control via AT commands (3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands) •Supply voltage range 3.4 ~ 4.4V
•Low power consumption
•Operation temperature:-40℃ ~85℃
Specification for GPS
•Sensitivity
-Tracking: -165 dBm
-Cold starts : -148 dBm
•Time-To-First-Fix
-Cold starts: 32s (typ.)
-Hot starts: <1s
-Warm starts: 3s
•Accuracy
-Horizontal position : <2.5m CEP
Specifications for GPRS Data
•GPRS class 12: max. 85.6 kbps (downlink/uplink)
•PBCCH support
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•Coding schemes CS 1, 2, 3, 4
•PPP-stack
•USSD
Specifications for SMS via GSM/GPRS
•Point to point MO and MT
•SMS cell broadcast
•Text and PDU mode
Programming
This code snippet sends an SMS message with current GPS position coordinates.
1
void
gsm_act_send_info()
2 {
3
char
tmp[
60
]
=
{
0
};
4
char
msg[
160
]
=
{
0
};
5
strcpy( tmp,
"AT+CMGS="
);
6
strcat( tmp, tmp_num );
7
strcpy( msg,
"LAT : "
);
8
strcat( msg, latitude );
9
strcat( msg,
"\r\nLON : "
);
strcat( msg, longitude );
10
strcat( msg,
"\r\nALT : "
);
11
strcat( msg, altitude );
12
at_cmd( tmp );
13
at_cmd_addition( msg );
14
15 }
Code examples that demonstrate the usage of GSM-GPS click with MikroElektronika hardware, written for mikroC for ARM, AVR, FT90x, PIC and PIC32 are
available on Libstock (http://libstock.mikroe.com/projects/view/1892/gsm-gps-click).
Resources
- GSM-GPS click example on Libstock (http://libstock.mikroe.com/projects/view/1892/gsm-gps-click)
- Vendor's data sheet (http://simcom.ee/documents/SIM808/SIM808%20SPEC_V1507.pdf)
- mikroBUS standard specifications (http://download.mikroe.com/documents/standards/mikrobus/mikrobus-standard-specification-v200.pdf)
http://docs.mikroe.com/GSM-GPS_click
9/15/2016
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