Ublox SARA-R42 - Contents; Table of Contents

SARA-R42 - Application note
UBX-20050829 - R02 Contents Page 3 of 58
C1-Public
Contents
Document information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Introduction ............................................................................................................................................. 6
2 Cellular technology overview ............................................................................................................. 7
2.1 Radio Access Technologies (RATs) ..................................................................................................... 7
2.1.1 LTE Cat M1 ......................................................................................................................................... 7
2.1.2 NB-IoT .................................................................................................................................................. 7
2.1.3 GSM/EGPRS ....................................................................................................................................... 8
2.2 Low power profile features .................................................................................................................... 8
3 Application design and development .............................................................................................. 9
3.1 Initial design decisions ........................................................................................................................... 9
3.2 Application stages ................................................................................................................................10
3.2.1 Persistent configurations ..............................................................................................................10
3.2.2 Power on/boot/PSM exit .................................................................................................................10
3.2.3 Network registration .......................................................................................................................10
3.2.4 IP acquisition ....................................................................................................................................10
3.2.5 Core application ...............................................................................................................................11
3.2.6 Power-off ...........................................................................................................................................11
3.3 Application modes .................................................................................................................................11
3.3.1 Debug / test mode ...........................................................................................................................11
3.3.2 Production testing ...........................................................................................................................11
3.3.3 Certification mode ...........................................................................................................................11
3.3.4 Firmware update mode ..................................................................................................................11
4 AT commands response parser ..................................................................................................... 12
4.1 Operational modes of the AT interface ............................................................................................12
4.2 Unsolicited result code .........................................................................................................................13
5 Local connectivity .............................................................................................................................. 14
5.1 Serial interface configuration .............................................................................................................14
5.1.1 Auxiliary (AUX) serial interface configuration ...........................................................................14
5.2 AT interface ............................................................................................................................................15
5.2.1 Set a fixed baud rate .......................................................................................................................15
5.3 Multiplexer (MUX) ..................................................................................................................................15
5.4 Point-to-point protocol (PPP) ..............................................................................................................16
5.5 Generic guidelines .................................................................................................................................16
6 MNO profiles ......................................................................................................................................... 17
6.1 Using MNO profiles ...............................................................................................................................17
6.2 Modifiable parameters .........................................................................................................................17
6.3 MNO profile setting examples ............................................................................................................18
6.4 Global profile (+UMNOPROF: 90) .......................................................................................................18
6.5 Standard Europe (+UMNOPROF: 100)..............................................................................................18