SX1276 Developm
6
ment Kit
USER GUIDE
R
W
WIRELESS, SENSING & TIMING PR
RODUCTS
SX1276 D
X
Develop
pment Kit
USER GUID
DE
Revision 1.1 – May 2014
©2014 Se
emtech Corpo
oration
age
Pa 1 of 53
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www.semtech
h.com
SX1276 Development Kit
USER GUIDE
WIRELESS, SENSING & TIMING PRODUCTS
Table of Contents
Table of Contents .......................................................................................................................................... 2
Index of Figures ............................................................................................................................................ 3
1
Preamble ................................................................................................................................................ 4
2
Introduction ............................................................................................................................................ 4
3
Getting Started ....................................................................................................................................... 5
3.1
Evaluation Kit Contents ................................................................................................................. 5
3.2
Ordering information ..................................................................................................................... 6
3.3
Updating the firmware ................................................................................................................... 6
4
Eiger Platform Presentation ................................................................................................................... 6
4.1
Platform Description .................................................................................................................... 10
4.2
SX1276 Module Hardware .......................................................................................................... 11
4.2.1
SX1276RF1IAS ....................................................................................................................... 11
4.2.2
SX1276RF1JAS ...................................................................................................................... 12
4.2.3
SX1276RF1KAS...................................................................................................................... 13
4.2.4
Module Antenna ...................................................................................................................... 14
5
Eiger platform for PER Testing ............................................................................................................ 15
5.1
Menu Description ........................................................................................................................ 15
5.2
Using the Eiger platform.............................................................................................................. 15
5.2.1
System Window....................................................................................................................... 16
5.2.2
PER Demo Window ................................................................................................................ 19
5.2.3
PER Rx Bar-graph .................................................................................................................. 28
6
SX1276SKA Software Description....................................................................................................... 29
6.1
SX1276SKA Quick start Guide ................................................................................................... 29
6.2
LoRa Mode .................................................................................................................................. 32
6.2.1
LoRa Menu .............................................................................................................................. 32
6.2.2
LoRa Common Window .......................................................................................................... 33
6.2.3
LoRa Parameters Window ...................................................................................................... 34
6.3
FSK Mode ................................................................................................................................... 35
6.3.1
FSK Menu ............................................................................................................................... 35
6.3.2
Common window ..................................................................................................................... 36
6.3.3
Transmitter window ................................................................................................................. 37
6.3.4
Receiver window ..................................................................................................................... 38
6.3.5
IRQ and Map window .............................................................................................................. 39
6.3.6
Packet Handler window ........................................................................................................... 40
6.3.7
Sequencer window .................................................................................................................. 41
6.3.8
Temperature window ............................................................................................................... 42
7
How to... ............................................................................................................................................... 43
7.1
… perform a simple transmission / reception in LoRa ................................................................ 43
7.2
… perform a simple transmission / reception in FSK .................................................................. 45
7.3
… perform Continuous transmission and Reception in LoRa ..................................................... 49
7.4
… Log the Transmitted or Received packets .............................................................................. 50
7.5
… perform a CW or PN9 Tx test on the SX1276 ........................................................................ 51
7.6
… check the frequency accuracy of the SX1276 module ........................................................... 51
8
Troubleshooting ................................................................................................................................... 52
8.1
The Eiger platform indicates very high PER even in short range ............................................... 52
8.2
The communication range in Lora is very poor ........................................................................... 52
8.3
The SX1276SKA do not detect the device through the USB ...................................................... 52
8.4
The Eiger platform does not seem to work anymore .................................................................. 52
8.5
The Eiger platform touch screen is not accurate ........................................................................ 52
Revision 1.1 – May 2014
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SX1276 Development Kit
USER GUIDE
WIRELESS, SENSING & TIMING PRODUCTS
Index of Figures
Figure 1: SX1276 Development Kit ............................................................................................................... 5
Figure 2: Eiger platform description ............................................................................................................ 10
Figure 3: SX1276RF1IAS Module Schematic ............................................................................................. 11
Figure 4: SX1276RF1JAS Module Schematic ............................................................................................ 12
Figure 5: SX1276RF1KAS Module Schematic ........................................................................................... 13
Figure 6: LF and HF Antenna Connection .................................................................................................. 14
Figure 7: Frequency Band Targeted Antenna............................................................................................. 14
Figure 8: Connect both USB ports to use the SX1276SKA ........................................................................ 29
Figure 9: SX1276 window organization ...................................................................................................... 30
Figure 10: Register table ............................................................................................................................. 31
Figure 11: SX1276SKA Boot-up windows .................................................................................................. 33
Figure 12: LoRa Radio parameters window................................................................................................ 34
Figure 13: FSK window structure ................................................................................................................ 35
Figure 14: FSK Common window ............................................................................................................... 36
Figure 15: FSK Transmitter window ............................................................................................................ 37
Figure 16: FSK Receiver window ................................................................................................................ 38
Figure 17: FSK IRQ and Map window ........................................................................................................ 39
Figure 18: FSK Packet Handler window ..................................................................................................... 40
Figure 19: FSK Sequencer window ............................................................................................................ 41
Figure 20: FSK Temperature window ......................................................................................................... 42
Revision 1.1 – May 2014
©2014 Semtech Corporation
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SX1276 Development Kit
USER GUIDE
WIRELESS, SENSING & TIMING PRODUCTS
1 Preamble
This document describes how to use the SX1276 Evaluation kit. This document describes especially the
SX1276 Eiger platform and the SX1276SKA User Interface. We strongly recommend for the user to read
thoroughly the datasheet of the SX1276 prior to start working on the device. Most of this document
assumes a general knowledge on the SX1276 and modern RF communications.
2 Introduction
The SX1276 is a single-chip integrated circuit ideally suited for today's high performance ISM band RF
applications. Added to the renowned, high-performance and low-cost, FSK / OOK RF transceiver modem,
the SX1276 is also equipped with the LoRa proprietary transceiver modem. This advanced feature set,
including a state of the art packet engine, greatly simplifies system design whilst the high level of
integration reduces the external BOM to a handful of passive decoupling and matching components. It is
intended for use as high-performance, long range, half-duplex bi-directional RF links, and where stable
and constant RF performances are required over the full operating range of the device down to 1.8V.
The SX1276 is intended for applications over a wide frequency range and it is covering all available sub-
1GHz frequency bands (168MHz, 434MHz, 470MHz, 868MHz and 902MHz). Coupled with a link budget
in excess of 135 dB in FSK in excess of 155 dB in LoRa, the SX1276 really offers the possibility of two
modems in one single package. The SX1276 complies with both ETSI and FCC regulatory requirements
and is available in a 5x5 mm QFN 28 lead free package.
The SX1276 Evaluation kit, based around the Eiger platform, allows the user to test every aspect of the
radio, both from the system and RF point of view.
On one hand, the Eiger platform is a touch screen portable device which has been design to enable quick
and easy testing of the PER performances of the SX1276. On the other hand, the SX1276SKA is a PC
based evaluation tool which allows in depth testing of the radio.
This document is therefore divided in two parts: the first part present the SX1276 Eiger module and how
to perform PER test in LoRa and FSK; the second part of this document present the SX1276 SKA and
how it can be used to test every single aspect of the radio.
Revision 1.1 – May 2014
©2014 Semtech Corporation
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SX1276 Developm
6
ment Kit
USER GUIDE
R
W
WIRELESS, SENSING & TIMING PR
RODUCTS
3 Ge
etting Sta
arted
3.1 Ev
valuation Kit Cont
tents
The SX12
276DVK1 Dev
velopment Kit consists of:
t
2 x SX1276RF modules
F1
orms
2 x Eiger platfo
ennas for LF frequency ban
f
nd
2 x dipole ante
ennas for HF frequency band
f
2 x dipole ante
c
2 x Mini-USB cables
een
2 x Touch Scre Styluses
D
te
Disclaimer Not
Figure 1: SX1
F
1276 Develop ment Kit
p
Revision 1.1 – May 2014
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emtech Corpo
oration
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Pa 5 of 53
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h.com
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