MOD-GSM development board User's manual

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MOD-GSM development board

User's manual

All boards produced by Olimex are ROHS compliant

Rev. E, February 2013

Copyright(c) 2013, OLIMEX Ltd, All rights reserved

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INTRODUCTION

MOD-GSM is excellent board for adding remote monitoring and control with the use of the GSM cellular network. With this module you can use all of the the features of each one of Olimex's boards with on-board UEXT connector by GSM network. Also the board can work in stand alone mode, but only when the SIM card is without PIN code. In stand alone mode MOD-GSM don't offer much opportunities. It can receive information by GSM network, but if you want to operate with this information, you will need appropriate board with UEXT connected to MOD-GSM. Choose the other board depending on the application you want to have. MOD-GSM contains quad-band GSM GPRS module 850/900/1800/1900Mhz inside which covers most used GSM networks around the world. The GSM antenna is build in the board so no need for external expensive GSM antennas.

BOARD FEATURES

• GSM/GPRS quad-band MODULE 850/900/1800/1900Mhz with build on-board GSM cellular antenna

• Li-ion backup battery 3.7 V 1200 mAh for up to 200 hours of GSM module stand-by

• SIM-card holder

• Status LED

• On-GSM module temperature sensor

• UEXT

• PWR_EXT

• PWRKEY

• On-board DC-DC converter for stand alone mode and battery recharge

• PCB: FR-4, 1 mm (0,039"), solder mask, silkscreen component print

• Dimensions: 79.2x57.6 mm (3.1182x2.268")

ELECTROSTATIC WARNING

The MOD-GSM board is shipped in protective anti-static packaging. The board must not be subject to high electrostatic potentials. General practice for working with static sensitive devices should be applied when working with this board.

BOARD USE REQUIREMENTS

Hardware: 12V, 800mA at least Adapter, if you want to recharge the battery. Some of Olimex boards with UEXT on it.

Important: If your board does not work, first try to charge the battery as you power supply the board for few hours. Note that the baud rate it is set on hardware level to 115200. Consider using 115200 when connected to the terminal or host board.

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MODULE FEATURES

– Power Supply – single supply voltage 3.4V – 4.5V

– Power saving – typical power consumption in SLEEP mode to 2.5mA

(BS-PA-MFRMS=5)

– Charging – Supports charging control for Li-Ion battery – Frequency bands:

– SIM340DZ Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. The

SIM340DZ can search the 4 frequency bands automatically. The frequency bands also can be set by AT command.

– Compliant to GSM Phase 2/2+ – GSM class – Small MS – Transmit Power – Class 4 (2W) at EGSM 900 – Class 1 (1W) at DCS1800 and PCS 1900 – GPRS connectivity

– GPRS multi-slot class 8 (optional) – GPRS multi-slot class 10 ( default) – GPRS mobile station class B – Temperature range

– Normal operation: -20°C to +55°C

– Restricted operation: -30°C to -20°C and +55°C to +80°C – Storage temperature -40°C to +80°C

– DATA GPRS:

– GPRS data downlink transfer: max. 85.6 kbps – GPRS data uplink transfer: max. 42.8 kbps – Coding scheme: CS-1, CS-2, CS-3 and CS-4

– SIM340DZ supports the protocols PAP (Password Authentication

Protocol) usually used for PPP connections

– The SIM340DZ integrates the TCP/IP protocol

– Support Packet Switched Broadcast Control Channel (PBCCH) – CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent – Unstructured Supplementary Services Data (USSD) support – SMS

– MT, MO, CB, Text and PDU mode – SMS storage: SIM card

– FAX - Group 3 Class 1

– SIM interface - Support SIM card: 1.8V ,3V

– External antenna - Connected via 50 Ohm antenna connector or antenna pad

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– Audio features - Speech codec modes: – Half Rate (ETS 06.20)

– Full Rate (ETS 06.10)

– Enhanced Full Rate (ETS 06.50/06.60/06.80) – Echo suppression

– Serial interface and Debug interface

– Serial Port: Seven lines on Serial Port Interface

– Serial Port can be used for CSD FAX, GPRS service and sending AT

command of controlling module.

– Auto bauding supports baud rates from 1200 bps to 115200bps.

– Debug port: provide two lines on Serial Port Interface /TXD and /RXD – Debug port is only used for debugging

– Phonebook management - Support phonebook types: SM, FD, LD, MC, RC, ON,

ME,BN,VM,LA,DC,SD

– SIM Application Toolkit - Support SAT class 3, GSM 11.14 Release 99 – Real time clock – Implemented

– Timer function - Programmable via AT command – Physical characteristics

– Size: 33±0.15 x 33±0.15 x 3±0.3 mm – Weight: 7.8g

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SCHEMATIC

NA NA 0 ON GSM_PCB_ANT 1x3 90-DEGREE 1000uF/16VDC 2.2uF 1 0 0 n F 4.7nF

10uF/10V/1206 220uF/10V/tant 1000uF/6.3V/8x12/low_ESR

10nF(NA) 1 0 u F /1 0 V /1 2 0 6 47uF/6.3V 1000uF/6.3V/8x12/low_ESR 2 2 0 u F /1 0 V /t a n t 100nF

330pF(NA) 2.2uF(NA) 220nF(NA) 1nF(NA)

1N4004(SMD) 1N5822(SMC) 1N5819S 0 O P E N 15uH/DBS135 +5V VBAT VBAT +5V +12V VBAT +12V V B A T VBAT +5V TB2_3.5MM CON61.27MM-6-SMALL BC817 68k 4.7k 150k 4.99k/1% 15k/1% 4.99k/1% 2k 33k 560R 10k 22R 22R 22R NA NA NA 10K 1K NA(3.3K) NA(1K) NA(1K) 1K NA(1K) NA(1K) (NA)1K 33K 10K 220 220 SIM-HOLDER red SIM340D BH10R BD9778HFP TXD,RXD,RTS,CTS,DTR,DCD,RI,DBG_TX,DBG_RX,MAIN_RX,MAIN_TX V S IM ,S IM D A T A ,S IM C L K ,S IM R S T AUXADC AUXADC CTS CTS DBG_RX DBG_RX DBG_TX DBG_TX DCD DCD DTR DTR MAIN_RX MAIN_RX MAIN_TX MAIN_TX NETLIGHT NETLIGHT PWRKEY PWRKEY RI RI RTS RTS RXD RXD SIMCLK SIMCLK SIMDATA SIMDATA SIMRST SIMRST TEMP_BAT TEMP_BAT TXD TXD VSIM VSIM 14V2 14V_E2 1 2 5V_CHG_E 1 2 AGND_E ANT 1 2 3 BAT 1 2 BAT_E C2 C3 C4 C5 C6 C7 C8 C10 C 1 3 C14 C15 C 1 6 C17 C18 C19 C20 C21 D1 D2 D3 1 2 DCDC_E 1 2 D O W N L O A D 1 2 3 DRX/MRX 1 2 3 DTX/MTX GND L1 1 2 PWR PWRKEY 1 2 3 4 5 6 PWR_EXT Q1 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 GND 4 SIMCLK 3 SIMIO 6 SIMNC 5 SIMRST 2 VCC 1 SIM STAT AGND 22 ANTENNA 33 AUDIOOUT+ 26 AUDIOOUT-25 AUXADC 29 BACKUP 15 CTS 45 DCD 42 DEBUG_RX 1 DEBUG_TX 2 DTR 43 EAR+ 23 GND1 17 GND2 30 GND3 31 GND4 32 GND5 34 GND6 35 GND7 36 GND8 37 GND9 48 GPO1 40 KBROW0 10 MIC1N 20 MIC1P 21 MIC2N 19 MIC2P 18 NETLIGHT 41 POWERKEY 12 RER-24 RI 11 RTS 44 RXD 3 SIMCLK 7 SIMDATA 6 SIMRESET 8 SIM_PRESENCE 47 SPI_CLK 13 SPI_CS 46 SPI_D/C 16 SPI_DATA 14 STATUS 5 TEMP_BAT 27 TXD 4 VBAT1 38 VBAT2 39 VCHG 28 VSIM 9 U1 1 2 3 4 5 6 7 8 9 10 UEXT EN/SYNC 7 FB 3 GND 4 INV 5 RT 6 VIN _SW 2 1 VR1 9-12VDC MOD-GSM_rev_A1 OLIMEX LTD, BULGARIA, 2013 OLIMEX LTD, BULGARIA, 2013 https://www.olimex.com + + + + + + 5V_IN GND VBAT PWR_IN GPIO1 AUXADC

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POWER SUPPLY CIRCUIT

The power supply of MOD-GSM may be done in two ways:

1. Power from +9 - 12VDC without using the external backup battery. In this case the external power supply is used for supplying of 4V to GSM module and thus the module can be powered only from external power supply and the battery must not be connected.

In this case the jumpers have to be configured as follows:

− jumper BAT_E must be open

− jumper 4V_E must be closed

− jumper 4V must be closed

− jumper 5V_CHG_E must be open.

− DCDC_E must be closed

Power consumption in this mode is:

− near to 70mA when have a conversation.

− around 20mA in normal mode (without conversation).

Important: 4V_E, 4V and 5V_CHG_E jumpers have to be moved together. 2. Power from +12VDC with external 4.2V Li backup battery. The GSM module is powered always via the battery voltage and the external power supply is used only for charging the battery if it is discharged, i.e. if you have

plugged external power supply the battery will be charged and if the board is not powered from external power supply the board will work until the battery dies.

In this case the jumpers have to be configured as follows:

− jumper BAT_E must be closed

− jumper 4V_E must be open

− jumper 4V must be open

− jumper 5V_CHG_E must be closed

− DCDC_E must be closed

−

Power consumption in this mode:

Depends on live of the battery and vary from 260mA to 330mA (fully discharged battery). If we supply the module only via battery, without external power supply, the current through the battery is between 15mA and 30mA if there is no conversation, and between 180mA - 240mA when there is conversation.

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CONNECTOR DESCRIPTIONS

JTAG

Pin # Signal Name

1 NC 2 GND 3 RXD 4 TXD 5 RTS 6 CTS 7 DTR 8 DCD 9 RI 10 PWRKEY

This connector allows connecting to other Olimex boards with UEXT connector.

SIM-CARD

1 VSIM 2 SIMRST 3 SIMCLK 4 GND 5 NC 6 SIMDATA

This is standard SIM card connector, to operate MOD-GSM should have inserted valid SIM card for your operator network.

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PWR-CON

1 +12V

2 GND

This connector is used to power the MOD-GSM. External (+9-12VDC) power source have to be applied to this pins.

PWR_EXT

Pin # Signal Name Description

1 5V_IN 5V input for battery recharge

2 GND Ground

3 VBAT Output – for power supplying other devices from the GSM battery

4 PWR_IN Optional input for external power supply

5 GPIO1 Doesn't work

6 AUXADC Input for analog signal

BAT

1 VBAT

2 TEMP_BAT

3 GND

Note: The battery doesn't support TEMP_BAT.

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JUMPER DESCRIPTION

BAT_E

Connects 3.7V Li-ion battery to the GSM module. Default state is to be open to not drain the battery during stocking the modules.

Default state - open

4V_E

This jumper is used when power the module without battery. When connected enable 4V to the DCDC output.

Default state – open.

4V

This jumper is used when power the module without battery. When connected the jumper enable 4V to VBAT power pins of SIM340D module.

Default state – open.

5V_CHG_E

This jumper is used when the battery is present and allows battery charging. Connects the DCDC converter output (5V or 4V according 4V_E jumper state) to VCHG power pin of SIM340D module.

Default state closed

Important: 4V_E, 4V and 5V_CHG_E jumpers have to be moved together. Do not plug in external +12V if BAT_E jumper is open!

DCDC_E

Enable DCDC. Connect DCDC output ((5V or 4V according 4V_E jumper state) to the module.

Default state closed

Download

When the jumper is closed allow SIM340D firmware upgrade. Default state is open

DTX/ MTX

The DebugTX/MainTX defines whether Debug TX terminal or Main TX terminal of SIM340D module is connected to FT232RL virtual com port driver.

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DRX /MRX

The DebugRX/MainRX define whether Debug RX terminal or Main RX terminal of SIM340D module is connected to FT232RL virtual com port driver.

Default state is DRX

AGND_E

Enable board analog ground. Default state is closed

INPUT/OUTPUT

PWRKEY button – turns on the MOD-GSM module. You can turn on the SIM340D by driving the PWRKEY to a low level voltage for period time from 500mS to 1S

StatusLED ( red) with name STAT – indicates the state of SIM340D module.

STAT is off state - SIM340D is not running

64ms On/ 800ms Off - SIM340D does not find the network 64ms On/ 3000ms Off - SIM340D find the network

64ms On/ 300ms Off - GPRS communication

IMPORTANT NOTE ABOUT THE UEXT

The information below is for older revisions of the board. If your board doesn't have the serial resistors mentioned below then there is no need to perform the actions mentioned below!

If MOD-GSM doesn't transmit properly data on the UEXT of another Olimex board, it might be because some other boards can interfere with MOD-GSM's signals. If the host board has any signal on the I2C and/or the SPI on the UEXT there is very high chance of erroneous behavior.

There are two workarounds:

1. Cut the UEXT cable wires 5,6,7,8,9,10. Only wires 1,2,3,4 (NC, GND, RXD, TXD) should remain.

OR

2. Remove resistors R19, R20, R21, R23, R24, R25

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AVAILABLE DEMO SOFTWARE

- Please check the MOD-GSM web pages (standard edition and battery edition):

https://www.olimex.com/Products/Modules/RF/MOD-GSM/ https://www.olimex.com/Products/Modules/RF/MOD-GSM-B/

ORDER CODE

MOD-GSM assembled and tested. How to order?

You can order directly from our web shop or from any of our distributors. Check our web site https://www.olimex.com/ for more info. List of distributors:

https://www.olimex.com/Distributors/

Board revision history

Rev. A - initial release

Rev. A1 - removed resistors R19, R20, R21, R23, R24, R25

Document revision history

Rev. B - edited October 2011 – changes in POWER SUPPLY CIRCUIT – more detailed

Rev. C - added note about the recommended baud rate on page 2 Rev. D - added important note about UEXT line; various formatting

changes

Rev. E - updated schematic and disclaimer

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The information in this document is provided in connection with Olimex products. No license, express or implied or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Olimex products.

The hardware schematic is released under the Creative Commons Attribution-Share Alike 3.0 United States License. You may reproduce it for both your own personal use, and for commer cial use. You will have to provide a link to the original creator of the project https://www.olimex.com on any documentation or website.

You may also modify the files, but you must then release them as well under the same terms. Credit can be attributed through a link to the creator website: https://www.olimex.com

The software is released under GPL.

It is possible that the pictures in this manual differ from the latest revision of the board.

The product described in this document is subject to continuous development and improvements. All particulars of the product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product.

This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the product must have electronics training and observe good engineering practice standards. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards.

Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein.