Embit EMB-LR1276S Bedienungsanleitung
EMB-LR1276S Dev Board
EMB-LR1276S Dev Board
User Guide
User Guide
Rev. 2.1
Embit s.r.l.
Document information
Versions & Revisions
Revision Date Aut or Comments
0.1 2019-02-18 Embit-MDD Initial release
1.0 2019-05-03 Embit-MDD Revision 1.0
2.0 2019-04-17 Embit-MDD Revision 2.0
2.1 2019-07-30 Embit-MDD Revision 2.1
Index
1 Introduction...............................................................................................4
2 Description.................................................................................................4
2.1 Kit Overview...........................................................................................4
2.2 Hardware and Layout Configuration...........................................................5
3 Hardware User Guide.................................................................................
3.1 EMB-LR12 6S.........................................................................................6
3.2 Power Supply Connectors.........................................................................6
3.2.1 CMD_ SB and TRGT_ SB Connectors.....................................................................6
3.2.2 External Header (P3)........................................................................................7
3.2.3 External Battery (BATT)....................................................................................8
3.3 Communication Interfaces........................................................................8
3.3.1 CN1-SERCOM-0............................................................................................... 9
3.3.2 CN2-SERCOM-2............................................................................................... 9
3.3.3 CN3-SERCOM-3..............................................................................................10
3.3.4 CN4........................................................................................................... 10
3.3.5 CN5........................................................................................................... 11
3.3.6 CN6........................................................................................................... 11
3.3.7 CN7- SB.....................................................................................................12
3.4 Debugging Interface Connectors..............................................................12
3.5 Direct USB............................................................................................13
3.6 USB to UART connector..........................................................................13
3. On Board Sensors..................................................................................14
3.8 User Button..........................................................................................14
3.9 LEDs....................................................................................................15
3.10 RESET................................................................................................15
3.11 RF Antenna.........................................................................................16
3.12 Board Revision History.........................................................................16
4 Firmware User Guide................................................................................17
4.1 Quick Start...........................................................................................1
4.2 EMB-LR12 6S with EBI Commands..........................................................1
4.3 EMB-LR12 6S as Micro Embedded...........................................................1
4.3.1 Download your own firmware............................................................................18
5 Create Your Own LoRaWAN® Network.....................................................19
References...............................................................................................19
7 Disclaimer of liability................................................................................20
.1 Handling Precautions.............................................................................20
.2 Limitations..........................................................................................20
.3 Disclaimer of Liability............................................................................20
.4 Trademarks.........................................................................................20
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 3 of 20
Introduction
1 Introduction
The Evaluation Board EMB-LR127 S Dev Board allows the user to exploit all
the capabilities of Embit’s module EMB-LR127 S [1], simplifying the
implementation of a prototype of a LoRa® communication system.
The board provides a simple connection to a computer or an external processor
via USB. For testing purpose, several pin headers are present to exploit the
capabilities of the module and ease the development of custom designs.
2 Description
2.1 Kit Overview
The EMB-LR127 S Dev Board is a hardware platform to evaluate the Embit’s
LoRa® module EMB-LR127 S.
The kit (Figure 1) contains:
•2 EMB-LR12 6S Dev Board (A)
•2 external 868 MHz antenna (B)
•2 USB type A to Micro-B cable (C)
•2 Pigtail connectors (D)
•1 Segger J-Link Lite Programmer (with flat cable and mini USB cable) (E)
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 4 of 20
Figure 1. EMB-LR1276S Evaluation Kit.
Description
2.2 Hardware and Layout Configuration
Figure 2 illustrates the connections between the EMB-LR127 S and the
peripherals (LEDs, push buttons, antenna, debugger, USB 2.0 Micro-B
connector, external battery) placed on the board as indicated in Figure 3.
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 5 of 20
Figure 2. EMB-LR1276S Dev Board Rev 2.1 block diagra .
Figure 3. EMB-LR1276S Dev Board Rev 2.1 layout configuration.
Hardware ser Guide
3 Hardware User Guide
3.1 EMB-LR127 S
EMB-LR127 S (Figure 4) is the new sub-1GHz Embit’s wireless module that
supports the LoRaWAN® long range wireless protocol. It comes in a very small
form factor (11.5 x 11.5 mm) and integrates all the costumers needs to develop
complete and secure solutions.
Please refer to EMB-LR127 S datasheet [1] for detailed description.
3.2 Power Supply Connectors
The EMB-LR127 S Dev Board is designed to be powered in various ways:
•CMD_USB (Micro-B USB connector)
•TRGT_USB (Micro-B USB connector)
•External header (P3)
•External battery (BATT)
3.2.1 CMD_USB and TRGT_USB Connectors
The board circuitry can be powered directly form a USB bus by plugging
the micro USB cable to one of the USB connector, CMD_USB or TRGT_USB
(Figure 5).
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 6 of 20
Figure 4. EMB-LR1276S.
Hardware ser Guide
The power line on the board is regulated with a 3.3V dc linear regulator. Be
sure that the USB supply is capable to deliver enough current to supply the
module.
When the board is powered from one of the USB connector, the jumper
must be fitted on JP-USB of P1.
3.2.2 External Header (P3)
The board can be powered also using the Header P3 (Figure 6) with a
maximum of 6V. The pin on the right (as shown in the figure) is ground,
the pin on the left is Vin.
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 7 of 20
Figure 5. CMD_USB and TRGT_USB connectors.
Figure 6. External header P3.
Hardware ser Guide
When the board is powered from this header, the jumper must be fitted on
JP-BATT of P1.
3.2.3 External Battery (BATT)
It is possible to plug an external battery to the BATT connector, 1.25mm
pitch (Figure ).
Please be sure that the orientation of the battery is correct before to plug it
in to the connector. Ground pin is on the right, Vdd pin is on the left.
Battery voltage must not exceed 6V.
When the board is powered from this header, the jumper must be fitted on
JP-BATT of P1.
3.3 Communication Interfaces
The EMB-LR127 S Dev Board headers CN1 (Figure 8), CN2 (Figure 9), CN3
(Figure 10), CN4 (Figure 11), CN5 (Figure 12), CN6 (Figure 13), CN (Figure 14)
offer access to the I/O of the microcontroller in order to expand the board (e.g.,
by connecting sensors). The headers have a standard pitch of 2.54 mm.
Please note that not all the Sercom pins support I2C mode.
Pins Supporting I2C HS Mode
A5, A6, C3, G3, E4
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 8 of 20
Figure 7. External battery connector.
Hardware ser Guide
3.3.1 CN1-SERCOM-0
Pin Pin
Name
EMB-LR1276S
Pin Type Functionality
1 Vdd - Power +3.3V
2 PA04 A1 Analog Input
or Digital I/O
AIN4
AIN0
SERCOM0[Pad0]
PA04
3 PA05 A2 Analog Input
or Digital I/O
AIN5
AIN1
SERCOM0[Pad1]
PA05
4 PA06 A3 Analog Input
or Digital I/O
AIN6
AIN2
SERCOM0[Pad2]
PA06
5 PA07 A4 Analog Input
or Digital I/O
AIN7
AIN3
SERCOM0[Pad3]
PA07
6 GND - Power
(Ground) GND
3.3.2 CN2-SERCOM-2
Pin Pin
Name
EMB-LR1276S
Pin Type Functionality
1 Vdd - Power +3.3V
2 PA08 A5 Analog Input
or Digital I/O
AIN16
SERCOM0[Pad0]
SERCOM2[Pad0]
PA08
3 PA09 A6 Analog Input
or Digital I/O
AIN17
SERCOM0[Pad1]
SERCOM2[Pad1]
PA09
4 PA14 C2 Digital I/O
SERCOM2[Pad2]
SERCOM4[Pad2]
PA14
5 PA15 C1 Digital I/O
SERCOM2[Pad3]
SERCOM4[Pad3]
PA15
6 GND - Power
(Ground) GND
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 9 of 20
Figure 8. CN1 - Serco 0 header.
Figure 9. CN2 - Serco 2 header.
Hardware ser Guide
3.3.3 CN3-SERCOM-3
Pin Pin
Name
EMB-LR1276S
Pin Type Functionality
1 Vdd - Power +3.3V
2 PA22 G3 Digital I/O
SERCOM3[Pad0]
SERCOM5[Pad0]
PA22
3 PA23 E4 Analog Input
or Digital I/O
SERCOM3[Pad1]
SERCOM5[Pad1]
PA23
4 PA18 G2 Digital I/O
SERCOM1[Pad2]
SERCOM3[Pad2]
PA18
5 PA19 D1 Digital I/O
SERCOM1[Pad3]
SERCOM3[Pad3]
PA19
6 GND - Power
(Ground) GND
3.3.4 CN4
Pin Pin
Name
EMB-LR1276S
Pin Type Functionality
1 Vdd - Power +3.3V
2 - - - Not Connected
3 PB03 C6 Analog Input
or Digital I/O
AIN11
SERCOM5[Pad1]
PB03
4 GND - Power
(Ground) GND
EMB-LR1276S Dev Board ser Guide – Rev. 2.1 Page 10 of 20
Figure 10. CN3 - Serco 3 header.
Figure 11. CN4 header.
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