Uttam Bhat / LoRaWAN-SX1276-Application-Demo

SX1276 Shield based Applications

Dependencies:   X_NUCLEO_IKS01A1 LoRaWAN-lib SX1276Lib mbed

LoRaWAN-SX1276-Application Demo uses SX1276MB1LAS mbed component shield on a nucleo board platform to demonstrate a Class-A LoRaWAN device in the 915MHz ISM band for North American region. It uses the LoRaWAN-lib and SX1276Lib libraries.

Comissioning.h (LoRaWAN Network Configuration)

The end-device can be activated in one of the two ways:

Over the Air (OTA) activation can be enabled as shown in the figure below. /media/uploads/ubhat/ota_enable.png

The end-device must be configured with the following parameters:

  • LORAWAN_DEVICE_EUI (8 Bytes) : Fist 3 Bytes is the Organizationally Unique Identifier (OUI) followed by 5 bytes of unique ID. If not defined by user, then the firmware automatically assigns one to the end-device
  • LORAWAN_APPLICATION_EUI (8 Bytes)
  • LORAWAN_APPLICATION_KEY (or DEVKEY) (16 Bytes)

/media/uploads/ubhat/ota_eui.png

Activation by Personalization (ABP) can be enabled as shown in the figure below. /media/uploads/ubhat/abp_enable.png

The end-device must be configured with the following parameters:

  • LORAWAN_DEVICE_ADDRESS (4 Bytes) : If not defined by user, then the firmware automatically assigns one to the end-device
  • LORAWAN_NWKSKEY (16 Bytes)
  • LORAWAN_APPSKEY (16 Bytes)

/media/uploads/ubhat/abp_key.png

Config.h (LoRaWAN Communication Parameters)

  • Mode of Operation : Hybrid If the end-device needs to be configured to operate over 8-channels, then Hybrid Mode needs to be enabled /media/uploads/ubhat/hybridenable.png
  • Mode of Operation : Frequency Hop If the end-device needs to be configured to operate over 64-channels, then Hybrid Mode needs to be disabled
  • Delay between successive JOIN REQUESTs : The delay between successive Join Requests (until the end-device joins the network) can be configured using the parameter OVER_THE_AIR_ACTIVATION_DUTYCYCLE
  • Inter-Frame Delay : One can change the delay between each frame transmission using APP_TX_DUTYCYCLE It is advisable that APP_TX_DUTYCYCLE is greater than or equal to 3sec.
  • Data Rate : The data rate can be configured as per LoRaWAN specification using the paramter LORAWAN_DEFAULT_DATARATE. The range of values are DR_0, DR_1, DR_2, DR_3 and DR_4
  • Confirmed/Unconfirmed Messages : The uplink message or payload can be chosen to be confirmed or unconfirmed using the parameter LORAWAN_CONFIRMED_MSG_ON. When set to 1, the transmitted messages need to be confirmed with an ACK by the network server in the subsequent RX window. When set to 0, no ACK is requested.
  • ADR ON/OFF : The ADR can be enabled or disabled using the parameter LORAWAN_ADR_ON. When set to 1, ADR is enabled and disabled when set to 0.
  • Application Port : The application port can be set using parameter LORAWAN_APP_PORT. A few examples are associated to specific Application Port, and are defined in Config.h
  • Payload Length : The lenght of the payload (in bytes) to be transmitted can be configured using LORAWAN_APP_DATA_SIZE
  • Transmit Power : The transmit power can be configured using LORAWAN_TX_POWER (LoRaMAC verifies if the set power is compliant with the LoRaWAN spec and FCC guidelines)

/media/uploads/ubhat/loraconfig.png

The baud-rate for serial terminal display is 115200

Diff: app/LoRaApp.cpp

Revision:
2:78df92a365c2
Parent:
0:42863a11464a
Child:
3:4bca7f8f731a
--- a/app/LoRaApp.cpp	Fri Aug 26 20:51:07 2016 +0000
+++ b/app/LoRaApp.cpp	Sat Aug 27 04:03:02 2016 +0000
@@ -16,6 +16,11 @@
 
 #include "LoRaApp.h"
 
+#ifdef USE_IKS01A1_SENSOR
+float iks01a1_data;
+int32_t Accl_Value[3] = {0};
+#endif
+
 bool VerticalStatus = false;
 
 
@@ -44,40 +49,59 @@
 void Application::ApplicationCall( eAppType App )
 {
     switch( App )
-    {
-        // Appends 8 Bytes (3 bytes longitude, 3 bytes latitude, 2 bytes altitude) to TX buffer
-        case AppGps:
-        {
-            /*
-            Gps.service( );
-
-            uint16_t altitudeGps = atoi( Gps.NmeaGpsData.NmeaAltitude );
-
-            if( ( BuffPtr + 8 ) <= LORAWAN_APP_DATA_SIZE )
-            {               
-                BuffAddr[BuffPtr++] = ( Gps.LatitudeBinary >> 16 ) & 0xFF;
-                BuffAddr[BuffPtr++] = ( Gps.LatitudeBinary >> 8 ) & 0xFF;
-                BuffAddr[BuffPtr++] = Gps.LatitudeBinary & 0xFF;
-                BuffAddr[BuffPtr++] = ( Gps.LongitudeBinary >> 16 ) & 0xFF;
-                BuffAddr[BuffPtr++] = ( Gps.LongitudeBinary >> 8 ) & 0xFF;
-                BuffAddr[BuffPtr++] = Gps.LongitudeBinary & 0xFF;           
-                BuffAddr[BuffPtr++] = ( altitudeGps >> 8 ) & 0xFF;
-                BuffAddr[BuffPtr++] = altitudeGps & 0xFF;
-            }
-            */
-            break;
-        }
-
+    {        
         // Appends 1 Byte to TX buffer
         case AppTemp:
         {    
-            /*       
-            Mpl3115a2.ReadTemperature( );
+#ifdef USE_IKS01A1_SENSOR 
+                        
+            temp_sensor1->GetTemperature(&iks01a1_data);
+                                    
+            printf("Temp = %f, %d\r\n", iks01a1_data, (int8_t) iks01a1_data);
+                               
             if( ( BuffPtr + 1 ) <= LORAWAN_APP_DATA_SIZE )
             {
-                BuffAddr[BuffPtr++] = ( int32_t )Mpl3115a2.Temperature;     // Signed degrees Celcius in half degree units. So, +/-63 °C                         
+                BuffAddr[BuffPtr++] = (int8_t) iks01a1_data;                         
+            }
+            
+#endif            
+            break;
+        }
+        
+        // Appends 2 Bytes to TX buffer
+        case AppPressr:
+        {    
+#ifdef USE_IKS01A1_SENSOR 
+                        
+            pressure_sensor->GetPressure(&iks01a1_data);
+                                    
+            printf("Pressure = %f, %d\r\n", iks01a1_data, (uint16_t) iks01a1_data);
+                               
+            if( ( BuffPtr + 2 ) <= LORAWAN_APP_DATA_SIZE )
+            {
+                BuffAddr[BuffPtr++] = ( (int16_t) iks01a1_data >> 8 ) & 0xFF;
+                BuffAddr[BuffPtr++] = ( (int16_t) iks01a1_data ) & 0xFF;                         
             }
-            */
+            
+#endif            
+            break;
+        }
+        
+        // Appends 2 Bytes to TX buffer
+        case AppHumid:
+        {    
+#ifdef USE_IKS01A1_SENSOR 
+                        
+            humidity_sensor->GetHumidity(&iks01a1_data);
+                                    
+            printf("Humidity = %f, %d\r\n", iks01a1_data, (uint8_t) iks01a1_data);
+                               
+            if( ( BuffPtr + 1 ) <= LORAWAN_APP_DATA_SIZE )
+            {
+                BuffAddr[BuffPtr++] = (int8_t) iks01a1_data;
+            }
+            
+#endif            
             break;
         }
 
@@ -108,76 +132,25 @@
         // Appends 2 Bytes to TX buffer
         case AppAccl:
         {  
-            /* 
-            uint8_t statusReg; 
-
-            // Read the PS_STATUS register
-            statusReg = Mma8451q.read_single( MMA8451_PL_STATUS );
-
-            // Display Orientation of NAMote on Serial Port
-            SerialAcclMetrDisplay( statusReg );
-
-            // If Orientation of the Mote changed then let Green LED ON
-            if( ( statusReg & 0x80 ) != 0 )
-            {
-                AppLed = 1;
-                CtrlLED( Green, LED_ON );
-            }
-
-            // Read and populate device orientation in Tx Buffer
-            if( ( BuffPtr + 2 ) <= LORAWAN_APP_DATA_SIZE )
+#ifdef USE_IKS01A1_SENSOR 
+                        
+            accelerometer->Get_X_Axes(Accl_Value);
+                                    
+            printf("X/Y/Z = %d/%d/%d\r\n", Accl_Value[0], Accl_Value[1], Accl_Value[2]);
+                               
+            if( ( BuffPtr + 6 ) <= LORAWAN_APP_DATA_SIZE )
             {
-                if( statusReg & 0x40 )
-                {
-                    if( statusReg & 0x01 )
-                    {
-                        BuffAddr[BuffPtr++] = 0x66; // horizontal + faceup
-                    }
-                    else
-                    {
-                        BuffAddr[BuffPtr++] = 0x99; // horizontal + facedown
-                    }
-
-                    BuffAddr[BuffPtr++] = 0; // vertical = false
-                }
-                else
-                {
-                    BuffAddr[BuffPtr++] = 0; // horizontal = false
-                    BuffAddr[BuffPtr++] = 0x11; // vertical = true
-                }               
-            }       
-            */
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[0] >> 8 ) & 0xFF;
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[0] ) & 0xFF; 
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[1] >> 8 ) & 0xFF;
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[1] ) & 0xFF; 
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[2] >> 8 ) & 0xFF;
+                BuffAddr[BuffPtr++] = ( (int16_t) Accl_Value[2] ) & 0xFF;                         
+            }            
+#endif            
             break;
         }       
 
-        case AppAcclSenet:
-        {   
-            /*
-            uint8_t statusReg; 
-
-            // Read the PS_STATUS register
-            statusReg = Mma8451q.read_single( MMA8451_PL_STATUS );
-
-            // Display Orientation of NAMote on Serial Port 
-            SerialAcclMetrDisplay( statusReg );
-
-            // If Orientation of the Mote changed then populate Upper Nibble of 0th Byte of Tx Buffer                       
-            if( ( statusReg & 0x40 ) != 0 )
-            {   
-                AppLed = 0;
-                CtrlLED( Green, LED_OFF );
-                BuffAddr[BuffPtr++] = 0; // horizontal
-            }
-            else
-            {
-                AppLed = 1;
-                CtrlLED( Green, LED_ON );
-                BuffAddr[BuffPtr++] = 10; // vertical
-            }                       
-            */
-            break;
-        }
-
         case AppPushButton:
         {   
             uint16_t PushButtonCnt;