mikroElektronika SmartGM862 User manual

MikroElektronika
SmartGM862™
Manual
All MikroElektronika´s development systems represent irreplaceable
tools for programming and developing microcontroller-based devices.
Carefully chosen components and the use of machines of the last
generation for mounting and testing thereof are the best guarantee of
high reliability of our devices. Due to simple design, a large number of
add-on modules and ready to use examples, all our users, regardless
of their experience, have the possibility to develop their projects in a
fast and efcient way.
Development System

MikroElektronika
SmartGM862
The SmartGM862 Board is a full-featured development tool for the Telit’s GM862 GSM/GPRS module. This board has
everything you need to develop your own GSM-GPRS based device.
Key features:
- Data transfer via Telit GM862 module;
- Microphone and speaker connectors;
- UART communication with microcontroller;
- 7-23V AC or 9-32V DC power supply voltage;
Figure 1: SmartGM862 with Telit GM862 module

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How to connect the board?
The SmartGM862 is designed for use with Mikroelektronika’s development systems. To make connection between
development system and SmartGM862 use at cable with IDC10 connector and make connection between 2x5 male
header on development system port and 2x5 male header CN1 on SmartGM862. Which port on development system will
be used depends on position of MCU pins which are used for UART communication. When connection is established,
depending which development system is in use, turn ON appropriate switch on DIP switch SW1, Table 1.
Development system SmartGM862 CN1 pin UART pin
PIC/PIC18FJ PIN7 RX
dsPIC30/33/PIC24 PIN4 RX
AVR/8051 PIN0 RX
ARM PIN1 RX
PIC/PIC18FJ PIN6 TX
dsPIC30/33/PIC24 PIN5 TX
AVR/8051 PIN1 TX
ARM PIN0 TX
Table 1: DIP switch SW1 position
In order to supply SmartGM862 with power it is necessary to connect external power supply via AC/DC connector
CN2. Power supply voltage can be in range between 7 to 23V AC or 9 to 32V DC. As indication that power supply is
connected LED marked with LD1 will be turned on. To connect microphone with SmartGM862 use screw terminal CN4
which is marked with “-” and “+”. On “-” side of screw terminal connect minus phase, and on “+” side connect plus phase
of the microphone. In order to connect speaker use screw terminal CN5. “-” side of screw terminal is used for minus
phase and “+” is used for plus phase of speaker. If you want to access Telit GM862 module pins on SmartGM862 board
you can use marked pads CN3. To power up Telit GM862 module is necessary to press and hold push button marked
with “POWER ON GSM MODULE” for 1s.
How to use the board?
In order to use SmartGM862 it is necessary to place Telit GM862 module on board. After that connect antenna with Telit
GM862 module, Figure 1. Now connect SmartGM862 with development system as described in previous section. Write
program and upload it to MCU on development system. Program example can be found on:
http://www.mikroe.com/eng/products/view/468/smartgm862-board/

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Figure 3: SmartGM862 dimensions
Figure 2: SmartGM862
2x5 male header is
used for connection with
development system
AC/DC power supply
connector CN2
Connector CN4 is used for
microphone connection
Connector for Telit GM862
module
Antenna holder
DIP switch SW1 is used
to select RX and TX pins,
Table1
To power on Telit GM862
module press and hold
push button for 1s
Connector CN5 is used for
speaker connection

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Figure 4: SmartGM862 connection schematics

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