Matrix eBlocks EB066-00-2 User manual

www.matrixmultimedia.com
Quad Band GSM/GPRS Board
EB066-00-2

2Copyright © Matrix Multimedia Ltd.
Contents
About This Document 2
General Information 3
Board Layout 4
Testing This Product 5
Circuit Description 6
Circuit Diagram 7
This document concerns the Matrix Multimedia
Quad Band GSM/GPRS board, order code EB066-
00-2.
1. Trademarks and copyright
PIC and PICmicro are registered trademarks of Arizona
Microchip Inc. E-blocks is a trademark of Matrix
Multimedia Ltd.
2. Disclaimer
The information provided within this document is correct
at the time of going to press. Matrix Multimedia reserves
the right to change specications from time to time.
• How to get started with E-blocks - if you are new to
E-blocks and wish to learn how to use them from the
beginning there are resources available to help.
• Relevant software and hardware that allow you to use
your E-blocks product better.
• Example les and programs.
• Ways to get technical support for your product, either
via the forums or by contacting us directly.
3. Testing this product
It is advisable to test the product upon receiving it to
ensure it works correctly. Matrix provides test procedures
for all E-blocks, which can be found in the Support
section of the website.
4. Product support
If you require support for this product then please
visit the Matrix website, which contains many learning
resources for the E-blocks series. On our website you will
nd:
About This Document

3Copyright © Matrix Multimedia Ltd.
General Information
e Quad Band GSM/GPRS E-block board allows easy
access to the mobile phone GSM/GPRS networks. e
onboard GSM/GPRS module can be used to make or
receive wireless voice calls and is also capable of sending
and receiving SMS text messages. e GSM/GPRS E-block
comes complete with onboard PCB antenna, SIM card
socket, 2.5mm audio jacks for MIC and Headphone audio
connection and LED to display the network connection
status.
1. Features
• QuadbandGSM/GPRSconnection
• Voicecommunications
• SMStextbasedcommunications
• MICandHeadphonesockets
• SIMcardsocket
• NetworkstatusLEDandsignal
• PCBmountedantenna
• 5Vand3.3Vcompatible
• E-blockscompatible.
2. Block Diagram

Copyright © Matrix Multimedia Ltd.4
Board Layout
1. Downstream 9-way D type connector.
2. Patch System
3. LogiclevelvoltageshierIC
4. Screw terminals
5. Switch mode inductor
6. 3V8Switchmoderegulator
7. Headphones socket
8. Microphonesocket
9. 2V8GSMSupplyReference
10. GSM/GPRS network status LED
11. SIM socket
12. GSM/GPRS module
13. GSM/GPRSmodulermwareupgradeport
14. PCB antenna
123
2
2
6
5
4
78
9
10
11 12
13
14
Signal Connections using the Patch System
Signal A(16F88) B(16F877A) Patch
TransmitData(TXD) Bit 5 Bit 6 Patch
ReceiveData(RXD) Bit 2 Bit 7 Patch
Requesttosend(RTS) Bit 6 Bit 2 Patch
Cleartosend(CTS) Bit 7 Bit 5 Patch
Signal 1Patch
Reset Bit 1 Patch
Ring Bit3 Patch

5Copyright © Matrix Multimedia Ltd.
Testing This Product
e following instructions describe the test procedure for
the EB066-00-2 Quad Band GSM board.
1. System Setup
Multi-programmerboard(EB-006)with:
EB006 Options Setting
Power supply External,14V
PICmicro device 16F877A
SW1(Fast/Slow) Don’t care
SW2(RC/Xtal) XTAL
Xtal frequency 19.6608MHz
Port A
Port B LCD EB005
Port C GSM EB066
Port D Keypad EB014
Port E
Test program GSM.HEX
2. Test procedure
• ConnectEB005(LCDboard)toPORTBofthe
Multiprogrammer.
• ConnectEB066(GSMboard)toPORTCofthe
Multiprogrammer.
• ConnectEB014(Keypadboard)toPORTDofthe
Multiprogrammer.
• EnsurethattheGSMEB066hasthefollowing
jumperconguration:
o J5 = NoJumper
o J6 = 4-Way Jumper Fitted
o J7 = NoJumper
o J12 = NoJumper
o J13 = 4-WayJumperFitted
• Connectawirefromthe+Vscrewterminalofthe
Multi-programmerto+VterminalofLCDboard.
• Connectawirefromthe+Vscrewterminalofthe
Multi-programmerto+VterminalofGSMboard.
• Connectawirefromthe14Vscrewterminal
oftheMulti-programmerto+VPWRterminalofGSM
board.
• Inserta“Payasyougo”typeSIMcardintothe
GSM module (contract SIMs are encrypted and won’t
work).
• ConnectUSBcabletocomputer.
• Ensure13.5Vpowersupplyisworkingcorrectly.
• OpenPPP.
• InPPPopenleGSM.HEX.
• InPPPclickon“SendToPICmicro”icon.Apop
upwindowwillinformyouofstatus.Ifstatusisoka“Pro-
gramSentAndVeried”windowwillbeobservedonthe
screen.
• WaitfortheLEDontheEB066toashonthen
oforaround3secondsindicatingaconnectiontothe
GSM network.
• eLCDwilldisplayinstructionsonsendinga
SMS message.
• Enteranumbertosendthemessagetousingthe
keypad,nishwith#key.
• Enteramessageusingthekeypad,nishwith#
key.
• Conrmthenumberyouenteredbypressing#
• Conrmthemessageyouenteredbypressing#
• Whenaskedpress#tosendtheSMSmessage.
• EnsurethattheATcommandsareappearingon
the LCD correctly.
• etestroutinehaspassedifthemessageisre-
ceived by the remote mobile phone or other GSM device.

6Copyright © Matrix Multimedia Ltd.
Circuit Description
1. AT Commands
e GSM module uses a serial connection to transfer
commands and data to and from the microcontroller. To
do this there is a standard called AT commands which the
microcontroller uses to perform functions on the GSM.
AT commands are simply strings of serial data starting
withthecharacters“AT”standingfor“Attention”.
Here are some of the more generic AT commands avail-
able on the GSM module.
ATD07712345678; -dialthenumberspecied
ATA - answer an incoming call
ATH - disconnect an active call
For a list of all the supported AT commands please refer
to the datasheet available from here.
http://www.telit.com/module/infopool/download.
php?id=542
2. 5V/3.3VOperation
eGSMmodulerequiresasupplyvoltageof3.8Vand
I/Osignalvoltageof2.8V.Toallowthemoduletowork
with3V3and5Vsystemsavoltageshiingcircuithas
beenttedontotheboard.Caremustbetakentoconnect
the correct screw terminal to the correct voltage source.
Note:Poweringtheboardwiththeexternalvoltagessetup
incorrectly is likely to cause irreversible damage to the
module. Please take care when wiring up the external volt-
ages to unplug your power supply and double check your
connections before plugging it back in.
3. SIMCardsocket
SIMcardsusedwiththemodulemustbepre-pay(“Pay
AsYouGo”)ratherthencontractbasedascontractbased
SIM cards are normally heavily encrypted by the service
provider.
4. Status LED
eLEDontheboardwillasheverysecondwhenthe
GSM module is trying to establish communications
with the GSM network. Once the communications have
been established and a good signal is being received the
LEDwillashquicklyandthenremainoforaround3
seconds. When the module is in a call or communicating
with the GSM network the LED will remain constantly lit.
5. Onboard Antenna
e on-board antenna provides good signal strength even
in weaker area’s so no external antenna connection has
been provided.

7Copyright © Matrix Multimedia Ltd.
Circuit Diagram

Matrix Ltd.
The Factory
33 Gibbet Street
Halifax, HX1 5BA, UK
t: [phone]
e: [email protected].uk
www.matrixmultimedia.com
EB066-30-2