Differences

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--- deploying_lorawan [2017/04/29 17:51] – [1.1. Autonomo with LoRaBee] samer
+++ deploying_lorawan [2017/04/30 14:43] – [1.2. Arduino with Dragino Shield] samer
@@ Line 8: / Line 8: @@
 ==== -. Autonomo with LoRaBee ====
-For the devices in the LoRaWAN platform, we will use an Autonomo board with a LoRaBee holding the Microchip RN2483 module. According to [[http://shop.sodaq.com]], Autonomo is a matchbox-sized powerhouse which uses the new Atmel Cortex M0+ 32bit micro controller. One advantage of such device is that it can be powered by a smartphone-sized solar panel.
+Starting with the devices in the LoRaWAN platform, we will use an [[http://support.sodaq.com/sodaq-one/autonomо/|Autonomo]] board with a LoRaBee Microchip RN2483 module. According to [[http://shop.sodaq.com]], Autonomo is a matchbox-sized powerhouse which uses the new Atmel Cortex M0+ 32bit micro controller. One advantage of such device is that it can be powered by a smartphone-sized solar panel.
-In order to configure the device, you need to install the Arduino IDE from [[https://www.arduino.cc/en/Main/Software]]. Then you need to to install the board files as noted in [[http://support.sodaq.com/sodaq-one/autonomо/getting-started-autonomo/]].
+In order to configure the Autonomo with LoRaBee device, you should follow these steps:
-{{ :sodaq_rn2483_2.zip |}}
+    - 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]].
+Now you are ready to write a sketch for the device. Here is one example sketch {{ :test-lorawan-combined-loraserver-example.zip |}} where the autonomo is connected to three sensors: light, moisture, and temperature. Let us analyse some extracts of the code.
+In this part, you should put the keys for Over-The-Air Activation (OTAA) as explained in the {{ :lorawan102-20161012_1398_1.pdf |LoRaWAN specification}}:
+<code c++>
+// USE YOUR OWN KEYS!
+const uint8_t devEUI[8] =
+{ };
+// USE YOUR OWN KEYS!
+const uint8_t appEUI[8] =
+{ };
+const uint8_t appKey[16] =
+{ };
+</code>
+The pins for connecting the sensors are specified in these declarations (A0 for light sensor, A2 for moisture sensor, and D0 temperature sensor):
+<code c++>
+int light_pin = A0;
+int moisture_pin = A2;
+int temperature_pin = 0;
+int temperature_vcc_pin = 1;
+int moisture_vcc_pin = 8;
+int moisture_gnd_pin = 7;
+</code>
+The OTAA method is used for joining the network and Adaptive Data Rate (ADR) is activated:
+<code c++>
+LoRaBee.initOTA(loraSerial, devEUI, appEUI, appKey, true)
+</code>
+Eight different sub channels are activated with data rate ranges from 0 to 5:
+<code c++>
+LoRaBee.configChFreq(0, 868100000L,0,5,1);
+LoRaBee.configChFreq(1, 868300000L,0,5,1);
+LoRaBee.configChFreq(2, 868500000L,0,5,1);
+LoRaBee.configChFreq(3, 867100000L,0,5,1);
+LoRaBee.configChFreq(4, 867300000L,0,5,1);
+LoRaBee.configChFreq(5, 867500000L,0,5,1);
+LoRaBee.configChFreq(6, 867700000L,0,5,1);
+LoRaBee.configChFreq(7, 867900000L,0,5,1);
+</code>
+Finally, the message containing the sensor values is sent in an unconfirmed uplink message:
+<code c++>
+LoRaBee.send(1, (uint8_t*)message.c_str(), message.length())
+</code>
 ==== -. Arduino with Dragino Shield ====
+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]]. As for 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.
+The pin mapping corresponds to the Dragino electronic schematic:
+<code c++>
+const lmic_pinmap lmic_pins = {
+    .nss = 10,
+    .rxtx = LMIC_UNUSED_PIN,
+    .rst = 9,
+    .dio = {2, 6, 7},
+};
+</code>
+The send function is rescheduled TX_INTERVAL seconds after each transmission complete event:
+<code c++>
+        case EV_TXCOMPLETE:
+            Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
+            if(LMIC.dataLen) {
+                // data received in rx slot after tx
+                Serial.print(F("Data Received: "));
+                Serial.write(LMIC.frame+LMIC.dataBeg, LMIC.dataLen);
+                Serial.println();
+            }
+            // Schedule next transmission
+            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
+            break;
+</code>
+This send function enables to transmit the message containing the sensor values (as in the Autonomo case):
+<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>
+The send function is scheduled:
+<code c++>
+do_send(&sendjob);
+</code>
 ===== -. Gateways =====
 ==== -. Single Channel Gateway ====