M-ONE Protocol Stack User Guide
Contents
1. Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 I V 3 Hardware Description Considering hardware all the modules are completely pin to pin compatible Views of the module TinyOne PRO amp PLUS J24 J9 J25 J32 Top view of the radio module with components upside J25 J1 J32 Bottom view of the radio module with metallic cover upside x 4 SITE f a F F Sr _ e won DAR AL O n E ERE ut Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 21 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Views of the module TinyOne LITE J24 J9 J25 J32 Top view of the radio module with antenna upside for 868MHz module J9 J24 J25 J32 Bottom view of the radio module with metallic cover upside page 22 of 53 8 M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Pin out This list below must be taken as a reference for Mesh Lite firmware Some signals are renamed compared to the module with standard firmware for more details refer to the module terminal user guides due to enhanced functionalities Interface Pin pater VO Signal level Function Digital I O interrupt Input capable Refer to V 2 for detailed use J32 1 O6 I O TTL not connected if not used Digital I O interrupt Input capable J312. man E fu Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 30 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Functional registers Depending of the targeted application memory buffers can be split either in a couple of large frames or a lot of small frames The number of frames indicated is the maximum number of frames which can transit 0 18 frames 14 bytes by the router at the same time i 1 12 frames 46 bytes The default setting is 18 frames of 14 bytes ga B di 2 6 frames 110 bytes each This register need a reboot ATO to be taken in account 1 this register is accessible only on the coordinator The value is broadcasted to all other devices However the value read on other devices is not updated nes ooo When acknowledgement is enable a ACK frame is sent back to certify correct RF transmission If the transmitter receives no ACK back it repeats the frame once more 0 Disable Acknowledgement is made for each RF link 332 R W Acknowledge 1 Enable into the network not globally between initial sender and final receiver i this register is accessible only on the coordinator The value is broadcasted to all other devices However the value read on other devices is not updated 0 the RTS serial flow control goes high when half the buffer is reached to let place for arriving radio frames ee poi
3. 15 07 2009 Typical application circuit Below is given a typical circuit for a Mesh Lite application using TinyOne module TTL signal from host kan EXT_ nienne ntenne BEEBMHz B HE6B 1iin Setti Fl hi d e ing ashing camman ba sente ted serial link host P Pr gs TTL signal from host or mechanical switch ESL FLASH je be connected xD interface EE i OFF 3 ON blicro s witch LED for association status Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CHAPTER V DETAILED FUNCTIONING V 1 Registers Description LEGEND R read only register R W writable register Default value in bold IMPORTANT Modifications in registers 831X and S330 are taken into account only after an ATO command IMPORTANT All registers are accessible in read and write without any control The values entered are no more checked This is the responsibility of the user to enter correct value in correct register and to perform only authorized access according R or R W mentioned in the list below It is advised to use the Mesh Manager PC tool to avoid mistake bie L a ge 26 of 53 aF tion forbidden without Telit Communications S p A written authorization All Rights Reserved pa Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Register _ Register Number RARE Name Various
4. read digital inputs command Below is described the edge characteristics for triggering amp 1 05 and 1 06 interrupt are triggered on falling edge amp 1 02 interrupt is triggered on rising edge This interrupt functionality is also available for module in low power mode the edge wakes up the module which then sends its I O frame It allows a real power consumption efficiency for battery operated application All Rights Reserved Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 V 3 Network building In this paragraph we will detail how to build a network The main steps are network dimensioning device setting network start up We take the typical application circuit given in IV 3 as reference Network dimensioning Before implementing the network it is necessary to first identify device allocation Coordinator unique Routers and EndPoints Then it is important to correctly dimension the network in order to adjust timing parameters Criteria to take into account are characteristics of the network deep or wide low power elements time response size of the data exchanged weight of the routers number of children They will impact in the Base Time Network Period SuperFrame Duration and Payload refer to the next chapter to get an example that illustrates the method of calculation Reproduction forbidden without Te
5. wireless solutions Teli M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 H ae a AR f la e f Se T e r i This document is related to the following products License Free System for Frequencies 1 GHz Terminal Tiny0ne Plus 868 MHz 334 AD pee 25 mA License Free System for Frequencies 1 GHz TinyOne Lite 858 MHz USB dongle modems 2 4K Ope 10 m License Free System for Frequencies 1G Embedded TinyOne Lite 433 MHz RE modules 100 Kbps 10 mv License Free System For Frequencies 1 GHz Embedded TinyOne Plus 868 MHz RE modules 2 4 Kops 25 mA Reproduction for bidden without Telit Communications S p A written authorization Al License Free System for Frequencies i GHz Ter minal TinyOne Pro 868 MHz 354 Kbps 900 mA License Free System for Frequencies 1 GHz TinyOne Plus 868 MHz USB dongle modems JE S Kbps 25 m License Free System for Frequencies 1 GHz Embedded Tiny ne Lite 868 MHz RF modules 44 Kbps 10 mA License Free System for Frequencies 1 GHz Embedded TinyOne Pro 868 MHz RF modules JE Kbps 500 m Rights Reserved page 1 of 53 F Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 DISCLA
6. ku Pra f A 7 pe Re SN ad a T n gt A y 4 mo Y 36 2 x j sii r PTE tei 7 M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Register modification ATSn m command configures Hayes register number n with the value m e g ATS300 1 lt CR gt enters the value 1 in the register S300 The value is automatically stored in the EEPROM memory Answer OK lt CR gt or ERROR lt CR gt Switch to Bootloader ATBL command escape from the main program and run the bootloader This command is useful to update the firmware by serial or radio link See the dedicated part for details Answer OK lt CR gt page 39 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Content for Telemetry commands amp responses Telemetry commands allow reading or writing I Os remotely through the serial link The I Os status input or output is defined through the S345 register By default all I Os are set in output so that it is very important to apply the correct value to S345 register before playing with them Furthermore it is recommended to put a serial resistance on I O signals as shown on the typical circuit to avoid level conflict when S345 is not correctly set Below is the format of a telemetry command COMMAND MASK VALUE Length Bytes Field Description 3 possibilities e 0x01 read digital inputs COMMAND e 0x02
7. 1 15 07 2009 V 2 Advanced use Applications In this paragraph is described the different application profiles available within the Mesh Lite firmware There are 2 functional applications e Data it allows serial data transmission through the network e Telemetry it allows to consult digital amp analog input l or modify digital output O on a remote unit through the network Apart from these two functional applications there are two other operating applications available e Ping pong it allows the verification of the radio link between 2 units within the network one unit sends a ping and receives back a pong e Hayes it allows to send a Hayes command within the network directly through the serial link for local unit or through the radio link for remote unit It is the format of serial frames that defines the application All Rights Reserved page 34 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Below is described the format of transmitted serial frames TYPE RECIPIENT CONTENT E Length Field Bytes Type of frame e 0x65 gt data TYPE 1 e 0x68 gt telemetry e Ox6A gt ping e 0x6D gt Hayes RECIPIENT Recipient ID LSB first Message content e data to be sent for 0x65 CONTENT e telemetry command for 0x68 e blank for Ox6A e Hayes command for 0x6D It is possible to send a serial frame without type and recipient
8. 1vv0300819 Rev 1 15 07 2009 VI 2 Example of application The following example helps to understand how to choose Mesh timings and low power settings We will consider the following network populated with TinyOne PRO PLUS modules N AN Coord Router O EndPoint In this application e many exchanges occurs between R1 and E1 e R1 E1 E2 and E3 constitute a very active sub system where short response time is needed e E4 sends only one short message temperature for example to the coordinator every 10 min the response time is not critical but low power is strongly needed e messages between R1 E1 E2 and E3 are 20 bytes long while messages from E4 are only 3 bytes long Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Payload As most of the data exchanged are 20 bytes the payload 12 frames 46 bytes is chosen Base Time The smallest message exchanged in this application is 3 bytes long Time needed to exchange a message of this size considering Mesh protocol is about 11mS The beacon duration is 15mS 15 11 26mS so a Base Time of 63 ms is suitable for this application Super Frame duration We have now to choose the super frame duration for the coordinator and for each router R1 and R2 The easiest to choose is for R2 because it has only 1 child sending the smallest message The super frame of R2 is just composed by a beacon and the reception of E4 message Th
9. Master hier Failing link New reliable link Figure 6 Auto repaired Logical Configuration page 12 of 53 CHAPTER III 111 1 Typical Network Architecture A Coordinator Router Figure 7 Symbolic tree Organization Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 FUNCTIONALITIES s ess w p emumoq Upward messages EndPoint page 13 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 111 2 Device Identification Each device has a stable identifier it is a 2 bytes device_ID chosen and entered by the customer when setting its parameters 111 3 Time Utilization The timing used in our Mesh Lite is inspired from ZigBee it uses beacon and super frame Because of the slowness of our 868MHz devices carrier duration Rx to Tx switching time the CSMACA is not systematically used like in ZigBee This will be detailed in the Super frame schedule paragraph Each device has to wake up and listen the beacon issued from the upper device this beacon is waited at a known moment At this time start the super frame during which the most exchanges have to be done At the end of the max super frame duration the device must enter in sleeping mode lf there are uncompleted exchanges they are planned for the next beacon lf no exchange is pending for the device at the start of the super frame it can enter in sleeping m
10. Network start up After setting all the devices it is possible to install the network Below is the description of a typical network installation 1 Power ON the Coordinator its LED connected on ASSO signal lights ON continuously and the coordinator sends periodically its beacon 2 One by one power ON the other devices it is interesting to start with routers to optimize the auto association mode each device will automatically enter the network choosing the best parent The status of the association procedure can be monitored by the LED e Fast blink 2 per second indicates that no network has been found at this time e Slow blink 1 per second indicates that a valid network has been found and the device is looking for the best parent into this network e LED ON continuously indicates that association is successful and that the device is ready into the network 3 You can monitor the network by connecting the Coordinator to a PC and use the Mesh Manager software Refer to the user manual 3 for a detailed use of this tool 4 The network is now ready to work You can either use Mesh Manager software from a PC serial frames encapsulation is made by the software or refer to V 2 in case of another interface automat host UC AA ER r gt Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 44 of 53 Telit M ONE Proto
11. central point or controlling devices from a central point Therefore a partial mesh is sufficient and cluster tree topology is a natural choice which matches most of the applications gt Mesh Lite is a partial mesh network based on Cluster Tree topology e A lot of applications targeted need efficient power management to be battery operated so that all the network nodes must be low power It implies a real management of stand by mode for all the devices even the routers gt Mesh Lite network is a true low power network e Furthermore according to ETSI standards 868 MHz radio modules have limited baud rate any dynamic routing protocol would take significant part of the global bandwidth and would impact bandwidth available for user data Routing by the natural hierarchical addressing keep the maximum bandwidth for the user application while ensure high reliability The destination is directly read from the network address of the sending and receiving device gt Mesh Lite network is based on hierarchical addressing e To keep maximum efficiency and simplicity in the use of Mesh Lite it is important to implement an easy method for network building It is done by auto acquisition capabilities which means that each new device can automatically join the network if the ID parameters match gt Mesh Lite network has auto acquisition capability e Although Mesh Lite is a STATIC network topology i e nodes can t move dynamically in t
12. fields In that case the frame will automatically be a data type and will be sent to the default recipient defined by S315 amp S316 registers It is very useful when no encapsulation is possible from the host Description Below is described the format of received serial frames TYPE SENDER CONTENT Length PP eM A AL Field Bytes Description Type of frame e 0x65 gt data TYPE 1 e 0x69 gt telemetry e 0x6B gt pong e 0x6E gt Hayes SENDER 2 Sender ID LSB first Message content e data received for 0x65 CONTENT telemetry response for 0x69 blank for Ox6A Hayes response for Ox6E When a radio frame is received from the default recipient S315 amp S316 no encapsulation is added so the received serial frame has no type and sender fields The different contents are defined in the following paragraphs page 35 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Content for Data transmission The data transmission will depend on the payload chosen S330 register The payload defines the maximum amount of data that can be sent in one radio frame For example if payload is set to 1 12 frames 46 bytes data up to 46 bytes will be sent in once data up to 92 bytes will be sent in 2 frames and so on The transmission of higher amount of data is possible multi frames transmission in that case it is necessary to manage the
13. registers Serial Number of the radio module The answer is only composed by the 11 Serial Number characters of serial number followed by lt CR gt Ex DYCG4600729 lt CR gt _ Radio registers ss Radio registers Possible Values Values Description TinyPro TinyPlus 0 25mW 0 ImW Define the radio output power for TinyPro amp id Output Power 1 100mW 1 3mw TinyPlus modules sai 2 500mW 2 8mW 3 N A 3 25mW not used not used not used not used 19200 bits s Serial registers not used not used Serial Baud rate not used Time Out 2 lt TO lt 100 ms Serial time out on the Serial Link Rx IDLE Default 5ms time before considering a frame is finished Indicates the speed on the Serial Connection In Mesh Lite Firmware the value is fixed to S210 5 i e 19200bps CON O O1 N Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 27 of 53 Association registers Association Mode Association Criteria Association Notification Repair Mode Number of Failed Beacons RSSI Association Level i ag i K im Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 28 of 53 0 Auto 1 Manual 0 Deep 1 High level O to 255 Default 2 0 to 3 Default 0 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 20
14. the module to wake up by applying a logical 1 to the WAKEUP signal When serial transmission is finished WAKEUP signal must be put back to a logical 0 to allow the module returning in stand by Below is the timing diagram to respect WAKEUP RTS output ER RX input OSO T1 gt 300uS T2 lt 1000uS STAND BY STATUS signal The STAND BY STATUS output signal is set to logical 1 while the module is operating and return to 0 during stand by periods This signal is useful to synchronize the wake up of an external equipment according to Mesh Lite wakeup slots It can also be use to power a small sensor like a thermistor only during operating phase in this case current must be less than 10mA a p ES E fal pl l E Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 46 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Precaution with IP67 Modem On the IP67 modem the WAKEUP signal is connected to DTR pin of serial SubD9 connector If this modem is used in low power mode the DTR signal must be always set to allow the modem going in stand by Clearing the DTR signal resume the modem from stand by Most of PC terminal applications keep the DTR cleared by default set this signal for correct stand by behavior a TE Reproduction forbidden wit page 47 of 53 Telit M ONE
15. 09 Specifies the association method e Auto indicates that the device will first try to associate to the historical parent or to the one specified in Parent ID If impossible the device will choose another parent among the bests available Manual module looks only for the parent specified manually in Parent ID register If Auto Association is used this register indicates how the device will choose its parent Deep means that the device will try to join the network as deep as possible at branch termination If High level is chosen the device will try to join the network in upper layer as close as possible of the coordinator No more in use since Mesh V3 03 All associations are now systematically notified to the parent No more in use since Mesh V3 03 Now an orphan module always tries to re associate to the network according to the Association Mode chosen by used Number of consecutive beacon failed not received correctly before run the Auto Repair procedure This function is available only if Auto Repair is activated Minimum RSSI level required to allow association Set 0 to allow association even in bad conditions of reception Set up to 3 to allow association only when beacon parent is strong received Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Network Identifiers Network identifier Mesh Lite is monochannel 310 R W Network
16. 1 O5 Refer to V 2 for detailed use not connected if not used J30 WAKEUP J28 RXD J27 RESET 4 4 Signal to wake up the module in low power mode Refer to V 5 for detailed use not connected if not used 4 not connected if not used Request To Send aco i not connected if not used J23 Vop Digital part supply Digital 1 O Analog Input 10 bits capable Refer to J22 1 04 I O analog V 2 for detailed use not connected if not used Digital I O Analog Input 10 bits capable Refer to J21 1 03 I O analog V 2 for detailed use Signal indicating association status Refer to V 2 for detailed use not connected if not used J20 ASSO STAND BY STATUS Signal indicating stand by status Refer to V 5 for detailed use not connected if not used 4 4 4 4 p _ w e Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 23 of 53 GN Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Digital 1 0 not connected if not used Interrupt Input capable Refer to V 2 for detailed use Digital I O not connected if not used 10 bits Analog Input capable Refer to V 2 for detailed use Signal for serial setting or flashing Refer to V 4 for TTL detailed use RF connection to external antenna Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1
17. HARDWARE CONSIDERATION iaaiaaiaaaaaaaaaaaaaaaaaa aa aa uanaanuanuanuanuntunananannannannannnnnnnnnannnnnannnnnnnnannannanaa 18 Ved TINY ONE PROS TINYONE PLUS MODULES naa AAA ad 19 PIN OE ILE MODE neo P A nn Re 20 MEAR DWARE DE CRIP TON S a ee cts eo tine 21 CHAPTER V DETAILED FUNCTIONING iia 26 Vek NESISTERS DESCRIPTION ia a a l a E 26 NE ADVANCED UGE toto ic aa 34 V o RR E E ORO E a ee ees 42 Va FLA INC a OR etes 45 a OE MODE Po y E a E a 46 CHAPTER VI APP LIGA TON an da G a V n 48 VI 1 TIMING CALCULATION FOR TINYONE PRO PLUS MODULES uaaaanaaaaaaaaaaannaa ananannanananuannunanananannannunnunnanannnnanannunnunannnnnnannnnunnnnnanannnnanannannananaaaaaaa 48 Mz EXAMPLE OF APPLICATION sr aa 50 page 3 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CHAPTER I INTRODUCTION 1 1 Aim of the Document The aim of this document is to present the features and the application of the Mesh Lite embedded firmware M ONE available on the TinyOne family It is applicable for TinyOne Lite 433MHz TinyOne Lite 868MHz module and USB dongle TinyOne Plus 868MHz module USB dongle and terminal TinyOne Pro 868MHz module and terminal After the introduction the characteristics of the Mesh Lite will be described within the following distinct chapters general description functionalities hardware consideration detailed functioning examples of application Teli
18. ID ir R this register IS used when two different efault 48 applications are running in the same place i 48 means 0 in ASCII 0 to 255 Client identifier Each device in the network 311 LSB Default 48 has a unique address specified here Note R W Client ID that O is reserved for broadcast operations 0 to 2550 i For coordinator this ID is fixed at 65535 312 MSB default 48 and the register is read only ii 48 means 0 in ASCII 2343 LSB 0 to 2550 _ Mesh Lite is cluster tree architecture this LSB Default 255 register Indicate the ID of the parent RW Parent ID i if auto association is chosen this register 14 MSB R is read only 914 MSB Default 255 ii 255 is the COORD ID 315 LSB 0 to 255 If no encapsulation is possible on the serial Default Default 48 link for example with a basic automate all R W Recipient ID frames are sent to the Default Recipient ID 316 MSB 0 to 255 Gi Reset this register to 48 to disable the Default 48 functionality Note All S31X registers are taken into account only after a module reboot ATO Timing registers The Network period is the time between two beacons sent by the coordinator Each network period begins by synchronous exchanges and network updates The network period must be greater than the sum of all routers super frame durations see Network 0 lt NP lt 65 000ms below 320 LSB 321 RW 322 MSB Period Defaul
19. IMER The information contained in this document is the proprietary information of Telit Communications S p A and its affiliates TELIT The contents are confidential and any disclosure to persons other than the officers employees agents or subcontractors of the owner or licensee of this document without the prior written consent of Telit is strictly prohibited Telit makes every effort to ensure the quality of the information it makes available Notwithstanding the foregoing Telit does not make any warranty as to the information contained herein and does not accept any liability for any injury loss or damage of any kind incurred by use of or reliance upon the information Telit disclaims any and all responsibility for the application of the devices characterized in this document and notes that the application of the device must comply with the safety standards of the applicable country and where applicable with the relevant wiring rules Telit reserves the right to make modifications additions and deletions to this document due to typographical errors inaccurate information or improvements to programs and or equipment at any time and without notice Such changes will nevertheless be incorporated into new editions of this document Copyright Transmittal reproduction dissemination and or editing of this document as well as utilization of its contents and communication thereof to others without express authorization are prohibite
20. Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CHAPTER VI APPLICATION VI 1 Timing calculation for TinyOne PRO PLUS modules Below is given the timing formula for data transmission with mesh protocol in case of TinyOne PRO PLUS modules Transmit time LBT TX_switching Preamble Header Payload CRC Rx_switching With e LBT N x Random Waiting time amp Random waiting time from 4 to 80ms during Synchronous period and from 4 to 135ms during Asynchronous period amp Nis the number of retries if channel isn t free LBT 0 for beacons and downward frames sent during the Synchronous part e TX_switching RX_switching 1 65 ms e Preamble 4 0ms 19 bytes 38085b s for receiver synchronization e Header 2 73ms 13 bytes 38085b s including mesh protocol e Payload P x 0 21ms 1 byte 38085b s amp Pis the number of user bytes to be transferred amp P 22 for beacons e CRC 0 42ms 2 bytes 38085b s for consistency checking PP he JE Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Examples e Beacon Beacon duration 0 1 65 4 0 2 73 22 x 0 21 0 42 1 65 15 07ms e 3 Bytes synchronous downward data frame Frame duration 0 1 65 4 0 2 73 3 x 0 21 0 42 1 65 11 08ms page 49 of 53 Telit M ONE Protocol Stack User Guide
21. ce of a wireless link There are two types of mesh topology full mesh and partial mesh e Full mesh topology occurs when every node has a connection to every other node in the network Full mesh is very expensive to implement but yields the greatest amount of redundancy so in the event that one of those nodes fails network traffic can be directed to any of the other nodes Full mesh is usually reserved for backbone networks Figure 2 Full mesh topology e Partial mesh topology is less expensive to implement and yields less redundancy than full mesh topology With partial mesh some nodes are organized in a full mesh scheme but others are only connected to one or two in the network Partial mesh topology is commonly found in peripheral networks connected to a full meshed backbone Figure 3 Partial mesh topology f gt Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 8 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 11 2 Target of Telit Mesh Lite The target of Mesh Lite is to fit the common customer applications while keeping simplicity and cost efficiency Mesh Lite is available on new TinyOne family products allowing upgrade of the standard firmware of existing application without any new design Here are the key characteristics of Mesh Lite e Most of the applications targeted is gathering in information from a
22. col Stack User Guide 1vv0300819 Rev 1 15 07 2009 V 4 Flashing The 3 types of devices Coordinator Router amp EndPoint are based on the same hardware Only their embedded firmware is changing So it is important to be able to flash or re flash the modules regarding the device needed Serial flashing To flash the radio module through the serial link the same key points are necessary as for setting you must have an access to the serial link of the module J28 RX and J29 TX you must have an access to the setting signal J11 ProgS In that case the flashing procedure is described below Apply a logical 1 to ProgS input before Power ON or lt 50mS after Power ON Power ON the device Flash the module with the PC software Tiny Tools 4 Power OFF the device and lower the ProgS signal logical 0 or open ON DOTA It is also possible to re flash a module over the radio link For that the module must be already into an operating Mesh network You must also have an additional device flasher with a standard stack and connected to a PC In that case the flashing procedure is described below 1 From one point of the network send a HAYES command ATBL to the module to re flash 2 After that the module to re flash has escaped from the network you can verify by sending a PING frame no PONG response should come back 3 Switch off the coordinator and wait a few second that a
23. d Offenders will be held liable for payment of damages All rights are reserved Copyright Telit RF Technologies 2009 l Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 2 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CONTENTS CHAPTER I INTRODUCTION aaianinniaaaaaaaaaaaaaanaaanuanuanunnunnunnnnnnnnnnnnnnnnnnnnnnannnnannannannannannnnnannnnnannnnnananannannannannannannnnnannana 4 AMO Me DOCOMENR Se ben ne OO NRC 4 BAR FERENCE DOCUMENT en 5 LS DOCUMENT CHANGE LOD st a a E E a es nn eee A E sar ne 5 PE ha o r r O E T E I S 6 CHAPTER Il GENERAL DESCRIPTION iaaiaaanaaaaaaaaaaaaaaaaasaasansannannannaanannaanaannanannannanannnnnannnnnnnannnnnnnnnannannannannnnnnnnnnnannnana 7 Lts DEFINITION AND SCOPE OF MESH NETWORKING urnas doo Kaka dde ue 7 V TAR CET OF TELT ME EITE peace a a oasis 9 a E EF OA E Un A II Ir OE En 10 CHAP TER IN FUNGTIONALITIES conosca eo 13 Mis TYPICAL NEIWORK ARCHITECTURE sana aa a Ea a usin aniseed 13 SAS eo TUPI A HOM Ae E E ne Rte 14 VI STEIN E das 14 VIL 4 BEACONINFORMA TION a satin ee a SSD SAN BER BA SIDS SL F RD S sant BE HB ne se me nee 14 LUS SUPER FRAME SCHEDULE ciranac kesian r e TE na ent nt tua nd mini tienne 15 MIO AOUTNGRUEES SR ete td poten 15 SN EN OR A pa A A A e eE O e o ee 16 Ma AUTO AS SOC A MON ANDA UTRERA 17 e EON PONE PP o e a O EEE e PP e E ER 17 CHAPTER IV
24. e Super Frame duration for this router can be limited to 1 Base Time 63 ms R1 Super Frame is 1 beacon and up to 3 messages 20 bytes each received from the 3 children A 20 bytes message takes around 15ms 15 3 x 15 60 mS Super Frame duration of router R1 should be set to 1 Base Time Coordinator exchanges just a few messages it receives only the temperature 3 bytes from E4 every 10 min If we consider that it could exist a check message between Coord and R1 the maximum message pending is 2 or 3 Super frame duration of 1 Base Time would be comfortable for coordinator Network Period ETSI considerations Duty Cycle asked by ETSI rules in the band used by Mesh Lite is 10 Considering that the most activity is made by beacons 15ms the network period should be greater than 150 ms Mesh considerations Network Period can not be less than the sum of all super frame duration 1 1 1 3 Base Time 189 ms in our application Power and data rate considerations R2 has to wake up every network period but it has to be low power A good way to save power is to increase the Network Period R1 E1 E2 and E3 can continues to exchange data during the asynchronous part while R2 and E4 are sleeping A period of 10 min is possible if devices are in same conditions of supply mode and temperature In our application it could be risky if E4 is outside with battery while the indoor network heart is main powered A good deal for this ap
25. gy to Bushy type Reproduction forbidden wit page 16 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 111 8 Auto Association and Auto Repair As been said above the Beacon contains the association capabilities and network depth of the Router When a new device joins the network for the first time it listens to all beacons and chooses the best Router A good Router is a device placed in a high layer with a good RSSI level and which can still accept new children When the new device has selected its Router its sends a frame to join it Then the router adds the new device to its children list In case of broken node the top Router of the orphan sub network doesn t inform its children in a first time it attempts to join a new Router which can accept the total number of devices In case of success the list of all sub network devices is given to the new Router reached If its impossible to find a Router with enough free space the top Router of the orphan sub network informs its children to join another router by themselves Router with 27 Router with 5 free places H free places Link possible Link possible only without any if the orphan sub modification of the network is burst arnhan siih Orphan sub network Figure 11 Auto Repair 111 9 Low power We have seen that at the end of the super frame devices have to enter in sleeping mode Power can be dramatically saved by se
26. he network the Mesh Lite has auto repair capabilities If a link is lost for any reason Mesh Lite detects this trouble and tries others associations to reach normal data transmission gt Mesh Lite network is static but with auto repair capability TE Ei r ri k E Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 9 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 11 3 Basic principles Network set up The network can be either set up manually according to user preferences or almost automatic for easier and faster configuration There are 3 different logical devices e The Coordinator is at the top of the tree Layer 0 it is only able to exchange data with device placed under e Routers are present at each middle layers and can exchange data either with upper or lower devices A Router can be the final recipient of a frame or can route a frame to another layer e EndPoints are placed at each termination of the tree they can only exchange data with the upper layer The setting up of the network can be dynamic e Once the network master is up and running any new device coming up in a reachable distance will attach itself to the root if the network ID and optional security parameters match e The same process applies for depth N node becoming root for depth N 1 Communication Master leaf communication Th
27. heless it can only be used when no information has to be sent to the device Only applications where data are sent from EndPoint to the upper level can use this function Periodic 341 R W Wie 1 to 255 Telemetry registers Set each pin independently as input or Default 0 output LSB 0 Output 345 R W Direction of al ale eagle 0101001010 Only 1 01 1 03 and 1 04 are analog inputs capable An edge occurring on an interrupt input causes the sending of an l O status frame to the default recipient In addition an edge on these pin is capable to wake up the module if it is in standby mode 0 Interrupt disable general 1 0 1 Interrupt enable pin must be set as input in S345 register Note Only 1 02 1 05 and 1 06 are interrupt inputs capable e z r ay e wes Bai hiy le F PTa dal T lt HA A pa h 1 ST mm Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 32 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Program an automatic sent of inputs values every network period without needing to send a telemetry read order before The frame is sent to the default recipient specified trough 315 S316 registers You can choose to send digital or analog values or both If both are programmed S347 3 the module sends values in tow distinct frames Very suitable for
28. hronous Part AA Network Period Radio Rx Super frame if no low PWR FF Base Time Beacon Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 53 of 53
29. ime Choosing a short Base Time allows to have very low power devices waked up during short time Long Base Time is used for network where many data are exchanged without low power consideration i this register is accessible only on the coordinator The value is broadcasted to all other devices However the value read on other devices is not updated The Super Frame is the synchronous slot attributed to a router it begins by sending a beacon followed by data exchanged with children Each router can ask for a personal super frame duration depending of the amount of data planed to route Choose a small Super Frame duration if the 1 to 255 device has just a couple of children exchanging short and rare information Choose a large duration if many exchanges have to be done during the super frame Super Frame duration is given in number of Base Time if super frame duration is set to 8 and Base Time set to 4 the duration will be 8x125ms i this register doesn t exist on EndPoints The coordinator lists all routers of the network and the Super Frame duration asked by each one To avoid collision coordinator attributes a place to each router in the time The position obtain by a router is readable in this register Write to this register is Administrator access only not used not used 63 ms 125 ms 250 ms 500 ms 1000 ms 323 RIW Base Time Super Frame i 324 R W Duration 325 Position 0 to 255
30. is is the typical use of this functionality devices are addressed by a unique identifier serial number and they dynamically acquire their network address Since this address is based on a hierarchical structure the data flow follows the tree structure see Figure 4 SV Se ee Communication path Figure 4 Master to Leaf Communication r Fi i f Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 10 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Leaf Leaf Communication This is also supported but should keep in mind that whole traffic goes through the nearest common root node between the two leaves therefore it is limited to low traffic type applications Network Master a Communication path Figure 5 Leaf to Leaf Communication ar mo TE Reproduction fo All Rights Reserved page 11 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Maintenance The maintenance of the network is dynamic e Master node failure it is a critical failure which requires this node to be replaced for the network to function again Then the whole network sets back automatically e Router node failure all the devices attached to this node reinitialize their network attachment procedure in a transparent way and find another attachment point inside the network LY Network
31. lit Communications S p A written authorization All Rights Reserved page 42 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Device setting There are 2 key points to parameter the radio module you must have an access to the serial link of the module J28 RX and J29 TX you must have an access to the setting signal J11 ProgS In that case the setting procedure is described below 1 Power ON the device 2 Apply a logical 1 to ProgS input between 150mS and 500mS after Power ON 3 Send all Hayes commands needed for module setting using serial format described in V 2 For that you can also use Mesh Manager software and its Mesh configuration Wizard 3 4 Finish the setting with an ATO command 5 Power OFF the device and lower the ProgS signal logical 0 or open Below is given the minimum list of parameters to set for each type of device considering a network with auto association and auto repair modes and basic data transmission application The others registers keep their default value DEVICE PARAMETER REGISTER The Network ID ATS310 ATS320 ATS323 ATS324 ATS330 ATS310 ATS311 ATS324 ATS340 ATS310 ATS311 ATS340 The Periodic Wake up if low power ATS341 Coordinator Router EndPoint All Rights Reserved page 43 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009
32. ll network activity stops 4 Re flash the module from the flasher using the PC software Tiny Tools 4 5 When the module is re flashed you can switch on back the Coordinator 1 a F p i ta fn Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 45 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 V 5 Low power mode A key functionality available into the Mesh firmware is the ability to have all nodes of the network in low power mode The setting of this mode is made through S340 and 341 registers Serial access in low power In case of serial link with a module in low power mode it is important to wait for the module to be wake up before sending it some serial data For that 2 solutions are possible 1 Use hardware flow control J25 RTS when the module is in stand by the RTS signal goes high logical 1 so no serial transmission is possible When the module wakes up if buffers are not full the RTS signal goes to low logical 0 so that serial transmission is possible If no serial data is received up to SerialTimeOut in ms after the falling edge of RTS the module returns to stand by else the module operates the complete transmission 2 Use the wake up signal J30 WAKEUP if serial transmission can not wait for the next wake up or if no hardware control is managed it is possible to force
33. low power sensor endpoint combined with periodical wake up S341 the inputs values are sent only once each wake up of the endpoint 0 disabled 1 Digital only 2 Analog only 3 Digital and Analog Automatic Telemetry frame sending Children registers Total Number 0 to 100 Indicates the total number of children directly of Children or indirectly associated to the device diria al Indicates the number of children directly Direct O to 100 Children associated to the device Here is the list of all children associated to Child Address 0 to 255 the module Direct children are listed from 400 to 400 Number of Direct Children 1 Child Address 0 to 255 Indirect child are listed from MSB 400 Number of Direct Children to 400 Total Number of Children 1 For each child the type of module is known 1 N A i by reading this register Type of Type of Child number 40X 50X is readable module Souler at the 60X register 3 EndPoint i A child could not be a coordinator If the child is a router the position attributed 700 Position 0 to 255 to it by the coordinator is readable in this register CIRE TIC at K i er re avie K 800 E 0 to 255 duration of this router is readable in this Duration register a j L Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 33 of 53 L e Telit M ONE Protocol Stack User Guide 1vv0300819 Rev
34. nd by consumption Frequency band Channel number Radio bit rate Output Power 3 6V 25mW 14dBm 1dB Sensitivit 100dBm 2dB 38 4kbps This compatibility allows hybrid Mesh network structure by mixing both types of modules Then it is possible to build interesting network architectures like backbone topology optimizing consumption and cost PRO Medium distance m Long distance link link Figure 12 Mixed PRO amp PLUS Backbone Network 3 z r A e wes l ai Mi ye F ATS gael y Lin ibs a s gt aad v ba i _ d Pp h E g a E P i Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 19 of 53 I V 2 TinyOne LITE Modules Below is a summary of their specifications Characteristics B868 tinyLITE Power Supply Tx Power consumption 3 6V Rx Power consumption Stand by consumption with clock running Frequency band Channel number Radio bit rate Output Power 3 6V Sensitivity 98dBm 2dB Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 B433 tinyLITE 2 2 to 3 6 V 433 05 434 79 MHz 1 center frequency 434 100MHz 38 4 kbps 98dBm 2dB The 868MHz module is available either with an integrated antenna or without antenna RF connection through pin page 20 of 53 All Rights Reserved
35. no downward message is pending By opposition it can t exceed half of the max super frame duration to allow upward message treatment The downward messages are treated one by one following the list order given in the beacon each lower device must wait its turn to download their messages During the second part lower devices can upload their messages using CSMACA In order to save time each transmission is always acknowledged immediately using neither CSMACA nor Device_ID This would not decrease the reliability since the time between transmission and ACK is well known and since the others devices are listening at least the Rx Tx switching time before considering a channel is free 111 6 Routing rules A Router which has initiated a beacon is the master during the beginning Super Frame Each Router has in its memory the list of all Device_ID present under it children list When a router receives an upward message with valid CRC it always acknowledges it and checks the recipient ID e If the recipient ID matches its own ID it treats the frame for himself e Else if the recipient ID matches one of the children list the frame is buffered to be sent downstream later e Else the frame is buffered to be sent upstream later When a router receives a downward message with valid CRC it first checks the recipient ID e Ifthe recipient ID matches its own ID it acknowledges the message and treats the frame for himself e Else if the recipie
36. nt ID matches one of the children list it acknowledges the message and the frame is buffered to be sent downstream later e Else the frame is ignored and no acknowledge is performed d E K j F ze ol FA a i Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 15 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 111 7 Network capabilities Direct children lt 100 The coordinator doesn t need to have a children list because it is at the top layer The only limit is fixed by the two byte ID assignation It is possible to have a coordinator surrounded by 10 000 EndPoints Total children lt 100 For Routers the limit of children list size is 200 bytes so each router can support 100 children direct or not A possible direct children number limitation is to be defined Figure 9 Children limitation Due to timing precision necessity there is also a limitation in the depth of the network There can not be a link with more than 15 hops into the network Number of hops lt 15 Figure 10 Depth limitation To conclude on network capabilities the limitations are e Not exceeding a total number of 10 000 devices into the network e Not exceeding a total number of 100 children per router e The depth limitation of the network is 15 Those singles limitations allow imagining a lot of various networks from Ran
37. ode without waiting the max super frame duration The super frame duration and the time between beacons are settings chosen at the installation and available for the entire network lt Super Frame Obligatory sleeping time Figure 8 Time repartition 111 4 Beacon information The Beacon is sent periodically by an upper device to all lower devices directly associated to it The first information carried by the Beacon is the time synchronization To not miss the beginning of the beacon lower devices have to wake up a short time before As the beacon begins the lower devices synchronize their timers The beacon contains network information like Network ID Super frame max duration time between beacons etc It also contains the upper device association capabilities and its deep from coordinator The network capabilities is the number of new devices could still join the Router More details will be done in the next parts Finally the beacon gives the list of recipients for which a downward message is pending Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 14 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 111 5 Super Frame schedule Super frame time is divided in two parts the first one is assigned for downward messages while the other one is for upward messages The duration of the first part could be null if
38. plication is to set a network period of 2 minutes 120000 ms This way allows power saving on R2 while R1 E1 E2 E3 keep a fast activity during the asynchronous part and the reliability of synchronization is good even if E4 is in different conditions ik TEE Aj E ny spa jt P a ta F dl Eek TS a ps tt Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 51 of 53 Z 8 lt 320 321 322 Network Period 323 LEER 324 Super Frame Dur 330 Payload 340 Low Power Mode 341 Periodic Wake Up M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Coord mo R1 R2 T E2 E3 7 E4 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Below is the time diagram of this network Activity of Coordinator No Low PWR Activity of router 1 No Low PWR Activity of router 2 Low PWR S Listen to R1 EE Total network activity Coord Raitar 1 Router 2 Super Frame Super Frame Super Frame L 1 I CRE AT ATA AT EA A tim e a a a a a a e a a a a a a a a a a a a a a 1 4 O NA mM c c c O O O Y u Y Y O O O O A A Synchronous Part Async
39. read analog inputs 1 NN e 0x03 write digital outputs It corresponds to the mask desired for write command Only I Os defined as output by S345 register are considered MASK 1 O do not apply output keeps its previous value e 1 apply the new value defined by the next field Note this field is not used in case of read command 0x01 and 0x02 It corresponds to the value to apply for write command Only outputs defined by the mask are considered 1 Note this field is not used in case of read command 0x01 and 0x02 4 f js Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Below is the content of the telemetry response COMMAND RESPONSE 1 Byte defined as followed read digital inputs The response contains the value of all I Os whatever their status input or output 6 Bytes defined as followed I O 4 I O 3 I O 1 read analog inputs value value value 2 Bytes 2 Bytes 2 Bytes Each value can go from 0 to 1023 10 bits LSB first write digital outputs Blank On EndPoint device three digital inputs have an additional functionality interrupt capable that can be enabled through the S346 register When an input is set as interrupt an edge occurring on it triggers the sending of an I O frame to the default recipient the frame is equivalent to the response to a
40. rn Additional data Note 1 A Hayes command must be sent in once Below is the complete list of the AT commands available Command Description Parameters reset ATR command resets all modem s parameters to their default values and clear all children tables Answer OK lt CR gt Clear Children Table ATC command performs an erase of all children tables Available on Coordinator and Routers Answer OK lt CR gt Modem s firmware version AT V command displays the modem s firmware version number as follows Answer Mesh X yy D O lt CR gt Where X yy is the version Note that when X changes the compatibility is broken D the device with C coord R Router and E End device O for Option like S for sniffer Modem Reboot ATO command to reboot the modem that can be useful to trig a new association or take into account a new configuration No Answer to this command Register interrogation ATSn command displays the content of Hayes register number n refer to the register description table Some registers are standard for every Telit modems while others are specific to some products Answer Sn x lt CR gt except when n 192 my i 2 P Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 38 of 53 LS 2 f gt J y gt J M t 7 g A a a a A qa 4
41. s Low Noise Amplifier Least Significant Byte Mega Hertz 1 MHz 1000 kHz Micro Controller Millisecond Most Significant Byte Phase Lock Loop Programmable Read Only Memory Non return to Zero Radio Frequency Restriction of Hazardous Substances Receive Strength Signal Indicator Reception Short Range Device Transmission Surface Mounted Device Voltage Controlled Oscillator Voltage Controlled and Temperature Compensated Crystal Oscillator PT Mi Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 page 6 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CHAPTER Il GENERAL DESCRIPTION 11 1 Definition and Scope of Mesh Networking A wireless mesh network topology stands for a multihop network where nodes can send and receive messages and also function as a router to relay messages for its neighbors Through the relaying process a packet of wireless data will find its way to its destination passing through intermediate nodes with reliable communication links Computer PLE Figure 1 Example of mesh topology a TE Reproduction forbidden wit page 7 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 52 Mesh networking is the ability to use a wireless device as logical repeater to transfer data between two end points without direct radio connection It is a way to increase reliability and distan
42. serial flow control in order to avoid buffer saturation Furthermore it is highly recommended to enable acknowledgement S332 register to secure the transmission above all in case of multi jumps communication Below are examples of transmission time into a Mesh network depending on the data amount network depth and the product 10 bytes frame transfer time over Mesh Network 250 El Tiny Pro Plus 38 4kbps 200 H Tiny Lite 868 38 4kbps 150 Time ms 100 90 3 jumps 2 jumps 1 jump a TE Reproduction forbidden wit page 36 of 53 M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Time s 1KBytes file transfer time over Mesh Network H Tiny Pro Plus 38 4kbps G Tiny Lite 868 38 4kbps 3 jumps 2 jumps 1 jump page 37 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Content for Hayes commands amp responses Hayes or AT commands complies with Hayes protocol used in PSTN modem standards This AT protocol or Hayes mode is used to configure the modem parameters based on the following principles A data frame always begins with the two ASCII AT characters standing for ATtention Commands are coded over one or several characters and may include additional data Agiven command always ends up with a lt CR gt Carriage Retu
43. t 5000 ms Be careful to be compliant with ETSI Rules especially the duty cycle Only entire number seconds are available i this register is accessible only on the coordinator The value is broadcasted to all other devices However the value read on other devices is not updated u Peal a F d al r 1 4 fr a CE j Va 1 4 ay F 1 A a 1 k 4 wa F 4 3 j j i i Le A _ a Mi i M fs D Tu de i i E ib s BF F re j ha F de r 7 CA lt a 1 l pi an A ae i rh E E gt 1 Lu 7 po M me a a j h rd DT P la et i r mil j 4 k i f i Op imal tage Pay So es ee b pe r 1 Fi f Ge 1 a a v gt G A b T F E i Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 29 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Mesh Lite is a partial synchronous network During the first part of the network period time is organized in slots separated by beacons This is the synchronous part where each router has a dedicated time slot to exchange data The remaining part of the network period is asynchronous During this time devices can either sleep listen or exchange data at any moment without waiting a specific slot Mesh protocol need to organize the time in slots This register specifies the elementary bloc of t
44. t M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 1 2 Reference documents 1 EN 300 220 1 v1 3 1 ETSI Standards for SRD Sept 2000 2 ERC Rec 70 03 ERC Recommendation for SRD March 2001 3 Mesh Manager User Guide 1vv0300823 4 TinyTools User Guide 1vv0300824 1 3 Document change log Revision Date Changes ISSUE 0 17 04 09 First Release ISSUE 1 15 07 09 Update in Hayes commands and registers description Alignment of modules consumption Fl i z 3 J F J Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved 1 4 Glossary ACP BER Bits s CER dBm DOTA EMC EPROM ETR ETSI FM FSK GFSK GMSK IF ISM kbps LNA LSB MHz uC ms MSB PLL PROM NRZ RF RoHS RSSI Rx SRD Tx SMD VCO VCTCXO a he F ee Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Adjacent Channel Power Bit Error Rate Bits per second 1000 bits s 1Kbps Character Error Rate Power level in decibel milliwatt 10 log P 1mW Download Over The Air Electro Magnetic Compatibility Electrical Programmable Read Only Memory ETSI Technical Report European Telecommunication Standard Institute Frequency Modulation Audio Frequency Shift Keying Gaussian Frequency Shift Keying Gaussian Minimum Shift Keying Intermediary Frequency Industrial Scientific and Medical kilobits
45. tting a very long time between beacons but of course the final time to transmit a message through the entire network could take several minutes By opposition the speed can be enhanced by increasing the frequency of beacons Obviously Routers are the devices which need the more amount of power because they should wake up twice one time to receive the upper layer beacon and one to send a beacon to the downer level EndPoints can be very low power if the application can accept to wake up only once every n Beacons J LS Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 17 of 53 i K y P nn T Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 CHAPTER IV HARDWARE CONSIDERATION As specified earlier the Mesh Lite embedded firmware is available on TinyOne family It is applicable for TinyOne Lite 433MHz TinyOne Lite 868MHz module and USB dongle TinyOne Plus 868MHz module USB dongle and terminal TinyOne Pro 868MHz module and terminal page 18 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 I V 1 TinyOne PRO amp TinyOne PLUS Modules In Mesh Lite firmware both radio modules are functionally compatible Below is a summary of their specifications Characteristics B868 tinyPLUS Power Supply Tx Power consumption 3 6V Rx Power consumption Sta
46. x Decade 1 the RTS serial flow control goes high only when the whole buffer is full This increases the serial storage capacities but any arriving radio frame is lost if buffer is full No more in use since Mesh V3 03 The setting of Listen Before Talk module is no ee i more editable by user and is now fixed to provide an excellent reliability 333 R W i F a Ma P J j d Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 31 of 53 Telit M ONE Protocol Stack User Guide 1vv0300819 Rev 1 15 07 2009 Low Power registers Indicates if the device must sleep during asynchronous part of the network period LP Children Side indicates that the device can exchange with upper level parent side Low Power 0 LP Disable but should be low power on children side 340 R W Mode 1 LP Children Side This case is very useful to set a network with 2 LP Total dynamic short response time heart while keeping low consumption satellites LP Total forces the module to sleep completely during the asynchronous part of the network period In normal operation devices are waked up at least each network period to receive their parent beacon To save power this register allows setting the waking up only once every N network period This setting is only available on EndPoints This case is very useful to set a network with very low consumption EndPoints Nevert
Download Pdf Manuals
Related Search