lmic_NAmote_GPS - LMIC transmit example for NAmote-72 with GPS

Semtech » Code » lmic_NAmote_GPS

Semtech / Mbed 2 deprecated lmic_NAmote_GPS

LMIC transmit example for NAmote-72 with GPS

Dependencies: lib_gps lib_mpl3115a2 lmic_MOTE_L152RC mbed

Deprecated and replaced with

Import program LoRaWAN-NAMote72-Application-Demo

Demonstration of Class-A LoRaWAN device using NAMote-72

LoRaWAN Network Configuration (in Config.h)

For Over the Air (OTA) activation of an End-Device, it must be configured with the following parameters:

DEVEUI (8 Bytes) : Fist 3 Bytes is the Organizationally Unique Identifier (OUI) followed by 5 bytes of unique ID.
APPEUI (8 Bytes)
APPKey (or DEVKEY) (16 Bytes) The parameters can be entered as shown in the figure below

LoRaWAN Transmission Configuration (in Config.h)

Inter-Frame Delay : One can change the delay between each frame transmission using MS_DELAY_NEXT_TX It is advisable that MS_DELAY_NEXT_TX is greater than or equal to 3sec.

Payload Length : The lenght of the payload (in bytes) to be transmitted can be configured using PAYLOAD_LENGTH

Data Rate : The data rate can be configured as per LoRaWAN specification using the paramter FIXED_DR

Channel Configuration : In the case where the End-Device is transmitting over frequencies corresponding to a block of 8 channels, the block can be specified using CHNL_HYBRID. The value 0 corresponds to Block A, 1 corresponds to Block B and so on. When the End-Device transmits over more than 50 channels, CHNL_HYBRID needs to be commented out

Transmit Power : The power of the data to be transmitted can be configured using the parameter FIXED_TX_POWER. The maximum transmit power allowed is as per FCC regulation, depending upon the mode of transmission.

Serial Terminal Display

By using a serial port connection using applications such as teraterm or putty, one can view the status of the End-Device. Once the End-Device Joins the network, transmission parameters such as payload data, transmit power, battery level etc. are displayed on the terminal.

/media/uploads/ubhat/teraterm.png

Default Application Payload

This application defaults to sending uplink data to logical port 5. The application payload consists of: /media/uploads/jknapp_smtc/payload.png

Sample Application Payload Calculation for Longitude/Latitude

Payload => 00 19 F6 352BBA A94C20 FFFF

Temperature Calculation

19_H => 25₁₀

Temp = 25/2 = 12.5 ^oC

Battery Level

FF_H => 100 %

F6_H => 96.5 %

Longitude Calculation

longitude = A94C20_H => 11095072₁₀

longitudinal coordinate = -360 + (longitude₁₀ x 180/(2²³))

longitudinal coordinate = -121.93

Latitude Calculation

latitude = 352BBA_H = 3484602₁₀

latitude coordinate = (latitude₁₀ x 90/(2²³-1))

latitude coordinate = 37.39

Diff: main.cpp

Revision:: 6:0b2b2d196ddd
Parent:: 4:f9aaf0f82c00
Child:: 8:26682f47bff1

--- a/main.cpp	Mon Sep 21 18:04:06 2015 +0000
+++ b/main.cpp	Wed Oct 21 01:09:19 2015 +0000
@@ -18,9 +18,8 @@
 #include "gps.h"
 #include "debug.h"
 
-
-//#define SENET_F
-#define SMTC
+#define SENET_F
+//#define SMTC
 
 typedef enum {
     MOTE_NONE = 0,
@@ -69,10 +68,12 @@
 //////////////////////////////////////////////////
 #ifdef SENET_F
 // application router ID (LSBF)
-static const u1_t APPEUI[8]  = { 0x01, 0x00, 0x01, 0x00, 0x00, 0x0c, 0x25, 0x00  };
+//static const u1_t APPEUI[8]  = { 0x01, 0x00, 0x01, 0x00, 0x00, 0x0c, 0x25, 0x00  };
+static const u1_t reverse_APPEUI[8]  = { 0x00, 0x25, 0x0C, 0x00, 0x00, 0x01, 0x00, 0x01 };
 
 // unique device ID (LSBF)
-static const u1_t DEVEUI[8]  = { 0x0f, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
+//static const u1_t DEVEUI[8]  = { 0x0f, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
+static const u1_t reverse_DEVEUI[8]  = { 0x00, 0x25, 0x0C, 0x01, 0x00, 0x00, 0x00, 0x0F };
 
 // device-specific AES key (derived from device EUI)
 static const u1_t DEVKEY[16] = { 0xe4, 0x72, 0x71, 0xc5, 0xf5, 0x30, 0xa9, 0x9f, 0xcf, 0xc4, 0x0e, 0xab, 0xea, 0xd7, 0x19, 0x42, };
@@ -82,15 +83,20 @@
 #ifdef SMTC
 // Semtech Activation (v1.x server)
 // application router ID (LSBF)
-static const u1_t APPEUI[8]  = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+static const u1_t reverse_APPEUI[8]  = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+    //AA-AA-AA-AA-FF-FF-FF-FF
+//static const u1_t APPEUI[8]  = { 0xff, 0xff, 0xff, 0xff, 0xaa, 0xaa, 0xaa, 0xaa };   
+//static const u1_t reverse_APPEUI[8]  = { 0xaa, 0xaa, 0xaa, 0xaa, 0xff, 0xff, 0xff, 0xff };  
 
 // unique device ID (LSBF)
-//static const u1_t DEVEUI[8]  = { 0x20, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
-static const u1_t DEVEUI[8]  = { 0x34, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
-//static const u1_t DEVEUI[8]  = { 0x35, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
+//static const u1_t DEVEUI[8]  = { 0x21, 0x00, 0x00, 0x00, 0x01, 0x0c, 0x25, 0x00 };
+static const u1_t reverse_DEVEUI[8]  = { 0x00, 0x25, 0x0C, 0x01, 0x00, 0x00, 0x00, 0x20 };
+//static const u1_t DEVEUI[8]  = { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef };
+//static const u1_t reverse_DEVEUI[8]  = { 0xEF, 0xCD, 0xAB, 0x89, 0x67, 0x45, 0x23, 0x01 };
 
 // device-specific AES key (derived from device EUI)
 static const u1_t DEVKEY[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff  };
+//static const u1_t DEVKEY[16] = { 0xab, 0x89, 0xef, 0xcd, 0x23, 0x01, 0x67, 0x45, 0x54, 0x76, 0x10, 0x32, 0xdc, 0xfe, 0x98, 0xba };
 
 /*static uint8_t NwkSKey[] = 
 { 
@@ -112,12 +118,14 @@
 
 // provide application router ID (8 bytes, LSBF)
 void os_getArtEui (u1_t* buf) {
-    memcpy(buf, APPEUI, 8);
+    //memcpy(buf, APPEUI, 8);
+    LMIC_reverse_memcpy(buf, reverse_APPEUI, 8);
 }
 
 // provide device ID (8 bytes, LSBF)
 void os_getDevEui (u1_t* buf) {
-    memcpy(buf, DEVEUI, 8);
+    //memcpy(buf, DEVEUI, 8);
+    LMIC_reverse_memcpy(buf, reverse_DEVEUI, 8);
 }
 
 // provide device key (16 bytes)
@@ -131,9 +139,6 @@
 void get_mote_version()
 {
     char first;
-    
-    /*DigitalOut pc_7(PC_7);
-      DigitalIn pc_1(PC_1);*/
       
     pc_7 = 1;
     first = pc_1;
@@ -231,15 +236,12 @@
 static void PrepareDataFrame( void )
 {
     uint16_t altitudeGps;
-    float volts;
     
     restore_hsi();
 
     gps.service();
-    printf("lat:%f  long:%f\r\n", gps.Latitude, gps.Longitude);
-    // printf("lat:%d  long:%d\r\n", gps.LatitudeBinary, gps.LongitudeBinary);
+    //printf("lat:%f  long:%f\r\n", gps.Latitude, gps.Longitude);
     mpl3115a2.ReadTemperature();
-    //printf("temp:%d\r\n", (int)mpl3115a2.Temperature);
 
     // immediately prepare next transmission
     //LMIC.frame[0] = LMIC.rxq.snr;
@@ -259,26 +261,26 @@
     LMIC.frame[9] = ( altitudeGps >> 8 ) & 0xFF;
     LMIC.frame[10] = altitudeGps & 0xFF;
     
-    volts = bat->read()*AIN_VREF*AIN_VBAT_DIV;
-    printf("bat:%.2f\r\n", volts);
-#ifdef CHNL_HYBRID
-    LMIC.txpow_limit = 20;
-#else
+
+    //printf("bat:%.2f\r\n", volts);
+#ifndef CHNL_HYBRID
+    float volts = bat->read()*AIN_VREF*AIN_VBAT_DIV;
     if (volts < LOW_BAT_THRESHOLD)
         LMIC.txpow_limit = 20;
     else
         LMIC.txpow_limit = 30;
-#endif /* !CHNL_HYBRID */
-
-    // test forcing:
-    LMIC.datarate = DR_SF10;    // force SF10
-    
+#endif /* !CHNL_HYBRID */  
 }
 
-static void onSendFrame (osjob_t* j) {
+static void onSendFrame (osjob_t* j)
+{
+    if (LMIC.opmode & OP_TXRXPEND)
+        return;
+        
     PrepareDataFrame( );
-        // schedule transmission (port 1, data[], datalen 1, ACK requested)
-        // (will be sent as soon as duty cycle permits)
+    // schedule transmission (port 1, data[], datalen 1, ACK requested)
+    // (will be sent as soon as duty cycle permits)
+             
     LMIC_setTxData2(5, LMIC.frame, APP_DATA_SIZE, APP_ACK);
 }

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Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	04 Jun 2015
Imports:	213
Forks:	1
Commits:	9
Dependents:	0
Dependencies:	4
Followers:	99

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