Table of Contents
Advertisement
WIRELESS, SENSING and TIMING PRODUCTS
Byte [8]
>
Byte [9]
>
Byte [10]
>
Byte 8, 9 and 10 represent the latitude as defined by the LoRaMAC specification. The north-south latitude
is encoded using a signed 24 bit word where -
corresponds to 90° north (the North Pole). The equator corresponds to 0.
Byte [11]
>
Byte [12]
>
Byte [13]
>
Byte 8, 9 and 10 represent the longitude as defined by the LoRaMAC specification. The east-west
longitude is encoded using a signed 24 bit word where -
corresponds to 180° east. The Greenwich meridian corresponds to 0.
Byte [14]
>
Byte [15]
>
Byte 14 and 15 represent the value of the altitude (in meters) as it is received through the UP501.
5.3 PER Analysis
It is also important to notice that some of the LoRaMAC protocol frames can be used to perform network
testing such a PER test. A PER test can be perform thanks to the sequence number which is maintained
between the LoRa Server and the LoRaMote. Every packet send from the LoRaMote is numbered and
thus can be extracted from the LoRaMAC on the server side to perform the PER analysis. For more
information on the sequence numbering or on any other aspect of the protocol, please refer to the
LoRaMAC specifications
Revision 2.0 – July 2014
©2014 Semtech Corporation
Value:
MSB of the UP501 received Latitude
Value:
CSB of the UP501 received Latitude
Value:
LSB of the UP501 received Latitude
Value:
MSB of the UP501 received Longitude
Value:
CSB of the UP501 received Longitude
Value:
LSB of the UP501 received Longitude
Value:
MSB of the UP501 received Altitude
Value:
LSB of the UP501 received Altitude
Page 18 of 23
corresponds to 90° south (the South Pole) and
corresponds to 180° west and
LoRaMote
USER GUIDE
- 1
- 1
www.semtech.com
Advertisement
Table of Contents
