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--- esib_iot_challenge [2017/05/17 09:17] – [2.1. Autonomo with LoRaBee] samer
+++ esib_iot_challenge [2017/05/17 15:37] – [2. Devices] samer
@@ Line 1: / Line 1: @@
 ====== ESIB IoT Challenge ======
-Welcome to the ESIB IoT Challenge. In this challenge, you will designing and prototyping the first IoT services based on a LoRaWAN network.
+Welcome to the ESIB IoT Challenge. In this challenge, you will be designing and prototyping the first IoT services based on a LoRaWAN network.
 ===== -. What is a LoRaWAN Platform? =====
-In this challenge, you will benefit from the first experimental platform implementing an end-to-end LoRaWAN solution in Lebanon. The platform consists of the following elements:
+During this challenge, you will benefit from the first experimental platform implementing an end-to-end LoRaWAN solution in Lebanon. The platform consists of the following elements:
   * Devices that communicate to one or more gateways via a wireless interface using single hop LoRa and implementing the LoRaWAN protocol. These devices are physically connected to sensors that generate data.
@@ Line 14: / Line 14: @@
 [{{ :lora-pilot-architecture.png?direct&650 | Figure 1. Architecture of the LoRaWAN Platform}}]
+<WRAP left help 100%>
+  * Where is the LoRa modulation implemented on the platform?
+  * What are the advantages of the LoRa modulation?
+  * How LoRa is compatible with LPWAN requirements and constraints?
+  * What is LoRaWAN? What is the difference between LoRaWAN and LoRa?
+  * Where is LoRaWAN implemented in the platform?
+  * Where does the IP layer start in the platform? Comment your answer considering the trends in IoT.
+  * Illustrate the protocol stacks on the LoRaWAN platform.
+</WRAP>
 ===== -. Devices =====
-==== -. Arduino with Dragino Shield ====
+Devices in the LoRaWAN platform are implemented on Arduino boards with Dragino shields. The combined module as well as the basic configuration steps are presented in [[simple_lora_prototype|Simple Prototype of LoRa Communications]].
-=== -. Periodic Message Sending ===
-Devices in the LoRaWAN platform can also be implemented on Arduino boards with Dragino shields. The combined module as well as the basic configuration steps are presented in [[simple_lora_prototype|Simple Prototype of LoRa Communications]]. Similarly to the Autonomo device, you can download the following sketch {{ :test-loraserver-comb-loraserver-dragino.zip |}} and modify it according to your preferences. Below you can find somme commented extracts of the sketch.
+Start by verifying the installation on your PC of the latest Arduino IDE and place the Arduino LMIC library in the corresponding folder.
+<WRAP left round help 100%>
+  * Give the characteristics of the Arduino you are using: number of pins, type of pins, memory sizes, etc.
+  * Give the main characteristics of the LoRa shield from Dragino (www.dragino.com).
+  * What type of Antenna are you using? Explain the corresponding characteristics.
+</WRAP>
+Download the example sketch, open it with Arduino IDE and compile it.
+You can download the following sketch {{ :test-loraserver-comb-loraserver-dragino.zip |}} and modify it according to your preferences. Below you can find somme commented extracts of the sketch.
+Verify that you have the latest Arduino IDE from https://www.arduino.cc/en/Main/Software on your computer.
+Install the board files as noted in http://support.sodaq.com/sodaq-one/autonomо/getting-started-autonomo/.
+Add the following library sodaq_rn2483_2.zip to your Arduino IDE as explained in https://www.arduino.cc/en/guide/libraries.
+In order to program the LoRaWAN devices, you should verify the installation one your PC of the following software:
+  * Arduino IDE
+  * LMIC Library
+  *
 The pin mapping corresponds to the Dragino electronic schematic:
 <code c++>
@@ Line 51: / Line 79: @@
 </code>
-The message containing the sensor values is transmitted on one of the radio channels (as in the Autonomo case):
+The message containing the sensor values is transmitted on one of the radio channels:
 <code c++>
 LMIC_setTxData2(1, (uint8_t*) buffer, message.length() , 0);
-</code>
-The adaptive data rate is not supported, and the spreading factor is configured as follows:
-<code c++>
-LMIC_setDrTxpow(DR_SF7,14);
 </code>
@@ Line 64: / Line 87: @@
 You can also find another example of sketch to download: {{ :test-loraserver-moisture-on-move.ino.zip |}}. Here the message sending is not periodic but related to an event. For example, an infrared sensor detects a movement and triggers a signal for the device to send a LoRaWAN message. Note also that the join method used in this second sketch is Activation by Personalisation (ABP): the device address, the network session key, and the application session key are directly configured on the device.
-===== -. Gateways =====
-==== -. Single Channel Gateway ====
-The single channel gateway includes a LoRa transmission module (Dragino Shield) connected to a Raspberry Pi (2 or 3) as shown in Figure 2. Communication between the two modules is done over an SPI interface.
-[{{ :2017-01-04_11.34.54.jpg?direct&300 |Figure 2. LoRa single channel gateway}}]
-In order to assemble the gateway, start by making the wire connections: the connection pins are identified in Figures 3 and 4.
-[{{ :schema-single-channel-pi3.png?direct&300 |Figure 3. Dragino pin mapping}}]
-[{{ :schema-pins-pi3.png?direct&300 |Figure 4. Raspberry pi 3 pins}}]
-Connect the Raspberry Pi to the Internet and install the packet forwarding software. The source code of the single channel packet forwarder is available on: [[https://github.com/samerlahoud/single_chan_pkt_fwd]]. In order to install it, you need to:
-  * Enable SPI on the Raspberry Pi using raspi-config
-  * Download and unzip the source code:
-<code bash>
-wget https://github.com/hallard/single_chan_pkt_fwd/archive/master.zip
-unzip master.zip
-</code>
-  * Install the wiring library:
-<code bash>
-apt-get update
-apt-get install wiring
-</code>
-Compile the packet forwarder:
-<code bash>
-make all
-</code>
-For gcc version 4.6.3, a compilation error results in the following warning ''unrecognized command line option '-std=c++11'''. Replace ''-std=c++11'' by ''-std=c++0x'' in the Makefile and recompile:
-<code>
-CFLAGS = -std=c++0x -c -Wall -I include/
-</code>
-Now, you need to configure the single channel packet forwarder. This is done in the {{ :global_config.json.zip |}} configuration file. Particularly, you need to choose the channel, the spreading factor, the pins for SPI communication, and the address of the backend server. Note that you can specify multiple backends for testing purposes.
-Finally, you can run the packet forwarder as root!
-<code bash>
-nohup ./single_chan_pkt_fwd &
-</code>
-==== -. Kerlink IoT Station ====
-<code>
-# activates eth0 at startup
-ETHERNET=yes
-# claims dhcp request on eth0
-ETHDHCP=yes
-# Selector operator APN
-GPRSAPN=gprs.touch.com.lb
-# Enter pin code if activated
-GPRSPIN=0000
-# Update /etc/resolv.conf to get dns facilities
-GPRSDNS=yes
-# PAP authentication
-GPRSUSER=
-GPRSPASSWORD=
-# Bearers priority order
-#BEARERS_PRIORITY="eth0,ppp0,eth1"
-BEARERS_PRIORITY="ppp0,eth0,eth1"
-</code>
-<code>
-./gps-pkt-fwd.sh > /dev/null &
-</code>
-<code>
-root      2548 S    /bin/sh ./gps-pkt-fwd.sh
-root     34908 S    ./gps_pkt_fwd
-</code>
-<code>
-/etc/init.d/gprs start
-[root@Wirgrid_0b03008c demo_gps_loramote]# /etc/init.d/gprs  status
-pppd (pid 5273) is running...
-Session: Rx=58, Tx=163
-Globals: Rx=1130457, Tx=1195592
-Sum:     Rx=1130515, Tx=1195755
-[root@Wirgrid_0b03008c demo_gps_loramote]#
-</code>
+<WRAP center help 100%>
+  * OTAA
+  * ID
+  * Security
+</WRAP>
 ===== -. Backend =====
-==== -. Loraserver ====
 The Loraserver has a web interface for configuring the applications and devices on the platform. Full details for installing the software are provided on [[https://www.loraserver.io]].
@@ Line 166: / Line 106: @@
 In order to enable OTAA join method, you have to make sure that the ''ABP activation'' button is unchecked.
-==== -. The Things Network ====
 ===== -. Applications =====