Cellular and Positioning Shield
Contents
1. Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 15 R69 is mounted Copyright 2014 Embedded Artists AB Input to shield D8 GPIO Not connected Normally not connected Connected to positioning module TXD if configuration resistor R68 is mounted Output from shield D7 GPIO Pin 13 Connected to positioning Input to shield GPIO21 module signal GPS_EXTINT D6 GPIO PWM Pin 15 Normally not connected Connected to positioning GPIO22 module signal normally not GPS_PPS one a connected second pulse signal Output from shield D5 GPIO PWM Not connected Not connected D4 GPIO Pin 16 Connected to cellular GPI023 module PWR_ON D3 GPIO PWM Pin 12 Normally not connected Connected to cellular GPIO18 module CTS if normally not configuration resistor connected R63 is mounted Output from shield D2 GPIO Pin 11 Normally not connected Connected to cellular GPIO17 module RTS if normally not configuration resistor connected R62 is mounted Input to shield D1 GPIO UART TXD Pin 8 Connected to cellular Input to shield TXD GPIO14 module RXD D0 GPIO UART RXD Pin 10 Connected to cellular Output from shield RXD GPIO15 module TXD A5 GPIO AIN I2C SCL Not used Not used A4 GPIO AIN I2C SDA Not used Not used A3 GPIO AIN Not connected Not connected A2 GPIO AIN Not connected Not con2. Cellular and Positioning Shield Users Guide Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide 125 25 e 72 6 66666 6 66 6 6 Wi Model SARA G350 801200 0308 000 IMEI 353816052501154 FCC ID XPYSARAG3S0 IC 85954 SARAGIS0 Get Up and Running Quickly and Start Developing Your Application On Day 1 Pa Embedded Artists EA2 USG 0702 v1 0 Rev A Cellular and Positioning Shield User s Guide Page 2 Embedded Artists AB Davidshallsgatan 16 211 45 Malmo Sweden info EmbeddedaArtists com http www EmbeddedArtists com Copyright 2014 Embedded Artists AB All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Embedded Artists AB Disclaimer Embedded Artists AB makes no representation or warranties with respect to the contents hereof and specifically disclaim any implied warranties or merchantability or fitness for any particular purpose Information in this publication is subject to change without notice and does not represent a commitment on the part of Embedded Artists AB Feedback We appreciate any feedback you may have for improvements on this document Please send your comments to support
3. module directly controls one LED for the once a second pulse The signal can be made accessible via a configuration resistor mount R66 5 3 Power Supply The power supply on the board is straight forward and simple yet flexible An external supply 5 14V DC 1Amp min is converted to 3 8V for the cellular modem A switched DC DC converter is used switching at 2 5 MHz The external power supply comes from e 5V on Arduino or Raspberry Pi connectors or e VIN pin on Arduino connector or e micro B USB connector An LDO created a 3 3V from the 3 8V supply to power the positioning module 5 4 Level Shifters The level shifters translate between the 3 3V I O voltage of the shield and the cellular modem I O voltage 1 8V 5 5 Arduino Shield Connector There are four male female connectors around the board edge that together form an Arduino UNO R3 compatible shield connector Arduino Signals RPi Signals Usage Note SCL Pin 5 12C communication with Input to shield SCL GPIO1 positioning module SDA Pin 3 12C communication with Bidirectional signal SDA GPIO0 positioning module D13 GPIO SPI SCK Not connected Not connected D12 GPIO SPI MISO Not connected Not connected D11 GPIO PWM SPI MOSI Not connected Not connected D10 GPIO PWM SPI SSEL Not connected Not connected D9 GPIO PWM Not connected Normally not connected Connected to positioning module RXD if configuration resistor
4. will be well spent time 4 14 Preparations This section walks through the preparations that must be done to get the system i e Cellular and Positioning shield up and running First acquire a standard size SIM card sometimes also called mini SIM and mount it in the SIM card holder Make sure the it supports data communication The picture below illustrates how to mount the SIM card Step 1 Push metal lock in red arrow direction Step 2 Lift up the SIM card older Step 3 Insert SIM card contacts down polarizing corner as shown in picture Step 4 Push back the SIM card holder and push metal lock in green arrow direction to secure the SIM card in correct position Figure 1 Mounting SIM Card Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 9 Next connect the shield to a system It can be via the Arduino Raspberry Pi connectors or in the case of the 3G version a direct USB connection to a PC As an illustrated example the picture below shows the shield mounted on the LPC4088 Experiment Bundle micro B USB connector for powering Cellular and Positioning shield Cellular antenna connector GPS GNSS antenna connector Figure 2 Shield Mounted on LPC4088 Experiment Bundle The next step is to mount the antennas Only use the antennas that are shipped with the shield The picture above also shows where the GPS GNSS and cellular an
5. EmbeddedArtists com Trademarks All brand and product names mentioned herein are trademarks services marks registered trademarks or registered service marks of their respective owners and should be treated as such Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 3 Table of Contents 1 Document Revision History 4 2 Declaration of Conformity 5 3 Introduction 6 3 1 Features 6 3 2 ESD Precaution 6 3 3 General Handling Care 7 3 4 Other Products from Embedded Artists 7 3 4 14 Design and Production Services 7 3 4 2 OEM LPCXpresso QuickStart Boards and Kits Z 4 Getting Started 8 4 1 Preparations 8 4 2 m center Application 9 4 2 1 Direct USB connection on 3G version 12 4 3 UART Pass Through Applications 12 5 Cellular and Positioning Shield Design 13 5 1 Cellular Modem 13 5 2 GNSS GPS Receiver 14 5 3 Power Supply 14 5 4 Level Shifters 14 5 5 Arduino Shield Connector 14 5 6 Raspberry Pi Connector 16 5 7 USB Connector 16 5 8 LED 16 5 9 Locating Components 16 6 Things to Note 18 6 1 SIM Card not Found 18 Oo 7 Further Information Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 4 1 Document Revision History Revision Date Description PA1 2014 11 04 First version Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 5 2 Declaration of Conformity CE We Embed
6. a USB Host interface and appropriate software driver In the latter case the USB connector can also be used to just power the shield 5 8 LED There are three LEDs e Yellow signals presence of 3 3V i e the shield is powered e Green the once per second pulse from the GPS GNSS module e Red is a configurable indicator connected to GPIO1 on the cellular module 5 9 Locating Components There are nine configuration resistors on the board The picture below shows their location Normally there is no need to change the default setting but for prototyping situations some of them can be mounted Copyright 2014 Embedded Artists AB Page 17 Cellular and Positioning Shield User s Guide R170 ti Pi da 82 Gana SSRSSH en M 88ci0 by XXX rea tobe Bs 1 ARGA Ici R297 FE PPS ne R63 mi ces Bic 7 IRES GARA ge SARA JO 00 wo 06 ae CAS CO O ORS 616 O C0 SZ I R90 R91 Figure 8 Configuration Resistor Locations Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 18 6 Things to Note This chapter contains information that can be relevant to check in case some problems or issues appear when using the shield 6 1 SIM Card not Found If the cellular modem gives a message that the SIM cards cannot be found it is likely that a power cycle is needed not just removing and inserting the SIM card again Remember that al
7. at have been improperly handled 3 4 Other Products from Embedded Artists Embedded Artists have a broad range of LPC based boards that are very low cost and developed for prototyping development as well as for OEM applications i e for integration Modifications for OEM applications can be done easily even for modest production volumes Contact Embedded Artists for further information about design and production services 3 4 1 Design and Production Services Embedded Artists provide design services for custom designs either completely new or modification to existing boards Specific peripherals and I O can be added easily to different designs for example communication interfaces specific analog or digital I O and power supplies Embedded Artists has a broad and long experience in designing industrial electronics in general and with NXP s LPC microcontroller families in specific Our competence also includes wireless and wired communication for embedded systems 3 4 2 OEM LPCXpresso QuickStart Boards and Kits Visit Embedded Artists home page www EmbeddedArtists com for information about other products or contact your local distributor Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 8 4 Getting Started This chapter contains information about how to get acquainted with the Cellular and Positioning Shield Please read this section first before you start using the board it
8. ded Artists AB Davidshallsgatan 16 21145 Malm Sweden declare under our sole responsibility that our products e Cellular and Positioning Shield GSM GPRS 2 5G model EAA00202 e Cellular and Positioning Shield UMTS 3G model EAA00215 to which this declaration relates conforms to the following Product Specifications Health and Safety Standards EN 60950 1 2006 A11 2009 A1 2010 A12 2011 AC 2011 R amp TTE article 3 1a EN 62311 2008 EMC Standards EN 301 489 24 V1 5 1 R amp TTE article 3 1b EN 301 489 7 V1 3 1 EN 301 489 1 V1 9 2 EN 61000 6 3 2007 Radio Spectrum Efficiency Standard EN 301 511 V9 0 2 R amp TTE article 3 2 EN 301 908 2 V6 2 1 EN 301 908 1 V6 2 1 RoHS EN 50581 2012 Concerning article 3 3 of the R amp TTE directive no additional requirements have been considered as relevant for this class of apparatus Supplementary Information The products herewith complies with the requirements of the Low Voltage Directive 2006 95 EC the EMC Directive 2004 108 EC the R amp TTE Directive 1999 5 EC the RoHS Directive 2011 65 EU and carries the CE marking accordingly am Kall Anders Rosvall Technical Director of Embedded Artists AB Malm November 4 2014 Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 6 3 Introduction Thank you for buying Embedded Artists Cellular and Positioning Shield The shield board has been designed for loT applications It builds aro
9. l supply voltages to the shield must be removed during the power cycle In the system integration manuals for the cellular modems it is clearly stated in section 2 5 that the modules do not support SIM hot insertion removal Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 19 7 Further Information The LPC4088 microcontroller is a complex circuit and there exist a number of other documents with a lot more information The following documents are recommended as a complement to this document 1 u blox SARA U270 UMTS HSPA GSM modem information http www u blox com en wireless modules umtshsdpa modules sara u2 series html 2 u blox SARA G350 GSM GPRS modem information http www u blox com en wireless modules gsm gprs modules sara gsm module family html 3 u blox MAX 7M GPS GNSS module http www u blox com en gps modules pvt modules max 7 htm 4 u blox MAX M8 GPS GNSS module http Avww u blox com en gps modules pvt modules max m8 series concurrent gnss modules html 5 LPCware NXP s community for developers http www lpcware com 6 LPCXpresso IDE NXP s low cost development platform for LPC families which is an Eclipse based IDE http www lpcware com lpcxpresso 7 _LPCOpen a Software Development Platform for NXP s LPC Microcontrollers http Avww pcware com lpcopen 8 mbed org the official site for mbed development and gives access to all documentation and the o
10. loaded from the LPC4088 Experiment Base Board project page https developer mbed org users embeddedartists notebook lpc4088 experiment base board projects The application can be used to allow the m center PC application to communication with the cellular modem via the mbed HDK virtual COM port Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 13 5 Cellular and Positioning Shield Design This chapter contains information about the hardware design of the Cellular and Positioning Shield and the different options on the board The schematic can be downloaded in pdf format from the product page and is recommended to have printed out while reading this chapter The picture below gives an overview of the Cellular and Positioning Shield design Arduino shield connectors GPS GNSS positioning module Raspberry Pi connector pads GPS GNSS antenna connector 2H T MA WUL TITI gt ot ew aa oe c oiox ag BQ biox a eof Model SARA G3s0 ELA 801200 0308 000 IMEI 353816052501154 c 1909 Made in Austria FCC ID XPYSARAGISO IC 8595A SARAGISO 2 amp 6 6666 6 6 6 6 6 Is Cellular antenna connector micro B USB connector Cellular modem module SIM card connector Figure 7 Cellular and Positioning Shield Overview 5 1 Cellular Modem The cellular modem from u blox is one of tw
11. n line compiler http mbed org Note that there can be newer versions of the documents links than the ones listed above Always check for the latest information version Copyright 2014 Embedded Artists AB
12. nect Set port Start trace Initialization Get info Modem information Modem date and time Manufacturer id u blox Current date time 04 01 01 00 01 08 00 00 Device model SARA G35t Pea era Firmware version 49 IMEI 6 J Set current time SIM Power saving Status SIM not inserted Status Disabled Security status Timeout sec AT COM12 115200 8 none 1 Flow ctrl hardware conn Trace 460800 8 none 1 Flow ctrl hardware not cnn In the upper right corner it is possible to click on AT Terminal button to open a terminal window where direct AT commands can be sent Consult the cellular modem AT command manual for details mi m center AT terminal ial x j E Terminai Loa Wero ESE AT UEXTDCONI AT UREG IH Mult line text Men sena 8 Enc Sendher Edit AT Commands AT COM12 115200 8 none 1 Flow ctrl hardware conn Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 12 4 2 1 Direct USB connection on 3G version The 3G version of the cellular modem has direct USB support so connecting the a PC to the micro B USB connector on the shield will give a direct access via virtual COM ports to the cellular modem No UART pass through application is needed and no base board either 4 3 UART Pass Through Applications Embedded Artists has created a UART pass through application on the LPC4088 QuickStart Board It can be down
13. nected A1 GPIO AIN Not connected Not connected A0 GPIO AIN Not connected Not connected IOREF Not connected Not connected RESET Pin 7 normally Normally not connected Can control reset of the not connected positioning module if configuration resistor Cellular and Positioning Shield User s Guide Page 16 R91 is mounted Can control reset of the cellular module if configuration resistor R90 is mounted VIN Does not exist Can power the shield if Note 5 14V DC 1Amp highest voltage is present on this net 5V Can power the shield if highest voltage is present on this net 3 3V Not connected Not connected 5 6 Raspberry Pi Connector The Raspberry Pi RPi connector pads are compatible with the 2x13 pos expansion connector found on the RPi The shield and RPi can easily be connected with the help of a 26 pos flat cable Note that pin headers must be soldered The RPi connections are placed in parallel over the Arduino connectors and are numbered according to the Arduino pins See table under Arduino pinning for details An external power supply is needed in most cases since the RPi cannot deliver enough current for the cellular modem 5 7 USB Connector This is a micro AB connector When SARA G350 is mounted this connector can only be used for powering the shield When SARA U270 is mounted it is an optional USB interface that can connect to a PC or an embedded system with
14. o versions SARA G350 or SARA U270 depending on shield version The modules are pin compatible A SIM card connector with ESD protection and antenna connector SMA are connected to the modem The cellular module is accessed via the UART interface per default design of the shield Only RXD and TXD are connected but by mounting configuration resistors R62 R63 RTS and CTS signals can be added to the interface Signal MDM_PWR_ON controls the PWR_ON signal on the cellular modem Normally the UART channel of the modem is used to communicate with it The SARA U270 modem also has a USB channel as an alternative communication channel Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 14 5 2 GNSS GPS Receiver The position module from u blox is one of two versions MAX 7Q or MAX M8Q depending on shield version The modules are pin compatible An antenna connector SMA is connected to the module A 0 22F super capacitor can power the positioning module for some time to keep time The position module is accessed via the 12C interface per default design of the shield There is configuration resistors that are not mounted that allows for UART access by mounting R68 R69 or letting the cellular modem communicate with the module mount R78 R79 U blox cellular modems has a positioning tunneling mode for simpler access of both a cellular and positioning module via just one serial interface The positioning
15. t can be downloaded from the LPC4088 Experiment Base Board project page https developer mbed org users embeddedartists notebook lpc4088 experiment base board projects When the m center application has started the main window looks like below Start with selecting the virtual COM port to connect to In this case the virtual OCM port that the HDK on the LPC4088 QuickStart board creates r M m center v 1 1 0 eee y oe ag Oe File Navigation Help NOGANGT No operator Home arena COM Port Trace Port ed N nect Modem information Modem date and time d cana r ic Current date time Set current time Power saving Figure 3 m center Main Window Select the HDK COM port and set 115200 bps 8N1 no flow control Port list i FI n B Flow contro C Figure 4 m center Set COM Port Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Next press the Connect button and then the nitialization button The cellular modem information will be displayed in the lower left corner r m m center v 1 1 0 ee N File Navigation Help AWAMASGYT Device u blox SARA G350 FW Version 08 49 No operator Home anemia COM Port Trace Port Port com12 Port Baud rate Baud rate Flow control hardware Flow control Data bits 8 Data bits Stop bits 1 Stop bits Parity none Parity none Status Connected Status Not connected Discon
16. tennas shall be mounted The GPS GNSS antenna has a big puck box at the very end and a long antenna cable The cellular antenna is short and connects directly to the SMA connector The final step is to provide an external power source to the shield A 5 12V DC 1Amp supply is suitable Three options exist e Power the shield via the micro B USB connector This will by default be a 5V supply for example a USB charger e Power the shield via the Arduino connectors either the 5V power supply or the VIN 12V max power supply can power the shield whichever has highest voltage e Power the shield via the Raspberry Pi connector pin 2 4 are 5V input and pin 6 9 14 20 25 are ground 4 2 _m center Application u box has created a Windows PC application for direct evaluation configuration and testing of the cellular modem The application is called m center The PC application communicates with the cellular modem via the UART channel The application can be downloaded from here http www u Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 10 blox com en evaluation tools a software u center m center html and there is also an associated user s manual for the application This section will just describe how to get the initial connection The rest of the details can be found in the m center manual Embedded Artists has created a UART pass through application on the LPC4088 QuickStart Board I
17. und high quality cellular and positioning modules from u blox and has been designed in cooperation with them There are two versions of the shield one 2 5G GSM GPRS and 3G UMTS version This document is a User s Guide that describes the hardware design for both versions The document use the LPC4088 Experiment Bundle as example platform to describe how the shields operate The shields have a general design and can operate together with many different platforms 3 1 Features Embedded Artists Cellular and Positioning Shield lets you get up and running quickly with loT applications The features of the shield board are e SARA G350 0xS GSM GPRS module on 2 5G shield version or Quad band version for global connectivity e SARA U270 0xS UMTS module on 3G shield version Note UMTS HSPA frequency bands are 900 2100 MHz and GSM EDGE frequency bands are 900 1800 MHz which are commonly used in Europe Africa Asia but not in North America e MAX 7Q 0 GPS GNSS module on 2 5G shield version or e MAX M8Q 0 GPS GNSS module on 3G shield version e SMA connectors for both modules right angled female e SIM card connector note SIM card not included e Arduino shield and Raspberry Pi RPi compatible connectors for external interface UART interface to cellular module 12C interface to positioning module POWER_ON and GPS_EXTINT GPIO signals Note that RPi pin header is not soldered just pads on pcb e On board power suppl
18. y Requires external 5 12V DC 1Amp power supply Input power via micro B USB connector Arduino shield connectors or RPi expansion connector e Dimensions Compact size 54 x 66 mm including SMA connectors Note that antenna connectors will build to the 66mm measure 3 2 ESD Precaution Please note that the Cellular and Positioning Shield come without a case box and all components are exposed for finger touches and therefore extra A attention must be paid to ESD electrostatic discharge precaution Copyright 2014 Embedded Artists AB Cellular and Positioning Shield User s Guide Page 7 Make it a habit always to first touch the metal surface of one of the SMA connectors for a few seconds with both hands before touching any other parts of the boards That way you will have the same potential as the board and therefore minimize the risk for ESD In general touch as little as possible on the boards in order to minimize the risk of ESD damage Note that Embedded Artists does not replace boards that have been damaged by ESD 3 3 General Handling Care Handle the Cellular and Positioning Shield with care The board is not mounted in a protective case box and is not designed for rough physical handling Connectors can wear out after excessive use The Cellular and Positioning Shield is designed for prototyping use and not for integration into an end product Note that Embedded Artists does not replace boards wh
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