This is an example application based on Mbed-OS LoRaWAN protocol APIs. The Mbed-OS LoRaWAN stack implementation is compliant with LoRaWAN v1.0.2 specification.

Dependencies:   Lorawan_Version_0_1

Dependents:   Lorawan_Version_0_1

Revision:
66:a11c79073f1f
Parent:
65:3061ea235a0c
Child:
67:7bb75ed97500
--- a/main.cpp	Sat Jan 11 11:35:11 2020 +0000
+++ b/main.cpp	Tue Jan 14 13:48:39 2020 +0000
@@ -14,91 +14,392 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
- 
-#include "mbed.h"
-#include "Lora.h"
-#include "Fahrrad.h"
+#include <stdio.h>
+
+#include "Watchdog.h"
+#include "lorawan/LoRaWANInterface.h"
+#include "lorawan/system/lorawan_data_structures.h"
+#include "events/EventQueue.h"
+
+// Application helpers
+#include "DummySensor.h"
 #include "trace_helper.h"
-#include <stdio.h>
+#include "lora_radio_helper.h"
+
+#include <mbed.h>
 #include "mbed_stats.h"
 
+#include "Watchdog.h"
+
+using namespace events;
+
+// Max payload size can be LORAMAC_PHY_MAXPAYLOAD.
+uint8_t tx_buffer[13];
+uint8_t rx_buffer[13];
+
 float Home_Longitude;
 float Home_Latitude;
+
 float Home_Distance;
 float Home_Distance_max;
 bool GPS_activ,LORA_activ,AtHome;
+
+
+
+DigitalOut GPSenable(PC_6);
 int LiveTick;
+
 bool IsLoading;
 AnalogIn LadeSpannung(PB_0); // 1/11 der gleichgerichteten Spannung am Dynamo
 
-struct TX_Position
-{
-uint8_t TX_Precode;
-uint8_t TX_Zeitstempel[sizeof(float)];
-uint8_t TX_Longitude[sizeof(float)];
-uint8_t TX_Latitude[sizeof(float)];
-};
+/*
+ * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing
+ */
+#define TX_TIMER                        100000
+
+/**
+ * Maximum number of events for the event queue.
+ * 10 is the safe number for the stack events, however, if application
+ * also uses the queue for whatever purposes, this number should be increased.
+ */
+#define MAX_NUMBER_OF_EVENTS            10
+
+/**
+ * Maximum number of retries for CONFIRMED messages before giving up
+ */
+#define CONFIRMED_MSG_RETRY_COUNTER     3
 
 
-DigitalOut led(LED2);
+  DigitalOut led(LED2);
+
+#include "Fahrrad.h"
+
+/**
+* This event queue is the global event queue for both the
+* application and stack. To conserve memory, the stack is designed to run
+* in the same thread as the application and the application is responsible for
+* providing an event queue to the stack that will be used for ISR deferment as
+* well as application information event queuing.
+*/
+static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE);
+
+static void send_message();
 
-//Livetick Warteschlange Events
-static EventQueue ev_queue(10 *EVENTS_EVENT_SIZE);
+/**
+ * Event handler.
+ *
+ * This will be passed to the LoRaWAN stack to queue events for the
+ * application which in turn drive the application.
+ */
+static void lora_event_handler(lorawan_event_t event);
+
+
+static void send_Position_to_Lora(uint8_t OptCode,GPS_Position current_pos);
+
+
+/**
+ * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper.
+ */
+static LoRaWANInterface lorawan(radio);
+
+/**
+ * Application specific callbacks
+ */
+static lorawan_app_callbacks_t callbacks;
+
 
 
 static void LifeTicker()
 {
-    
+    Watchdog &watchdog = Watchdog::get_instance();    
+    Watchdog::get_instance().kick(); // kick the Watchdog before the timeout
+        
     LiveTick=LiveTick+1;
-    printf("\n\t\t---LiveTick--- [%i]\n\n", LiveTick);
-    printf("Ladewert: %3.3f%%\n", LadeSpannung.read()*100.0f);
-
-//if(LadeSpannung.read() > 0.05f) {
-//            if (not IsLoading) {Licht_hell();}
-//            IsLoading = 1;
-//        } else {
-//            if (IsLoading) {ev_queue.call_in(3000, Licht_dunkel);}
-//            IsLoading = 0;
-//        }        
+    printf("\n[LiveTick] --- [%i]\n\n", LiveTick);
+    
+       mbed_stats_cpu_t stats;
+       mbed_stats_cpu_get(&stats);
+       printf("[SYSTEM] Uptime: %llu ", stats.uptime / 1000);
+       printf("Idle: %llu ", stats.idle_time / 1000);       
+       printf("Sleep: %llu ", stats.sleep_time / 1000);
+       printf("Deep: %llu\n", stats.deep_sleep_time / 1000);
+    
+    
+    printf("[SYSTEM] Ladewert: %3.3f%%\n", LadeSpannung.read()*100.0f);
+    if(LadeSpannung.read() > 0.05f) {
+            if (not IsLoading) {Licht_hell();}
+            IsLoading = 1;
+        } else {
+            if (IsLoading) {ev_queue.call_in(3000, Licht_dunkel);}
+            IsLoading = 0;
+        }        
         
+        
+        
+    GPS_Position current_pos;
+    
+    if(LiveTick>10 && LiveTick<<15){
+    GPSenable=1;}
+    else
+    {
+    current_pos = GPS_aktiv(); 
+    
     if(LORA_activ)
     {
-    printf("\n\tLORA Connected\n");    
+    printf("\n[LORA] Connected\n");    
+    send_Position_to_Lora(0x11, current_pos);
     }
     else 
     {
-    printf("\n\tKein LORA Signal\n");        
+    printf("\n[LORA] not Connected\n");        
     }
+        }
     
-    ev_queue.call(GPS_aktiv); 
+    
+    
+    
+    
+    
+    
+
+
+           
    // ev_queue.call_in(5000, LifeTicker);
-   
-   
-       mbed_stats_cpu_t stats;
-       mbed_stats_cpu_get(&stats);
-       printf("Uptime: %llu ", stats.uptime / 1000);
-       printf("Sleep time: %llu ", stats.sleep_time / 1000);
-       printf("Deep Sleep: %llu\n", stats.deep_sleep_time / 1000);
-       
 }
 
+
+
+
+/**
+ * Entry point for application
+ */
 int main(void)
 { 
-    printf("----- MAIN() ------");
-
+    Watchdog &watchdog = Watchdog::get_instance();
+    
+    watchdog.start(30000);
+    uint32_t watchdog_timeout = watchdog.get_timeout();
+    printf("Watchdog initialized to %lu ms.\r\n", watchdog_timeout);
+    
+    
+    ev_queue.call_every(15000,LifeTicker);
+    
     // setup tracing
     setup_trace();
     
-    Lora_init();
+    //Starte_Fahrrad_Eventmanager(); //schonmal die Fahrrad Events Initialisieren falls wir hier auch ohne lorawan empfang was machen wollen
+ 
+
+    // Initialize LoRaWAN stack
+    if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) {
+        printf("\r\n LoRa initialization failed! \r\n");
+        return -1;
+    }
+
+    printf("\r\n Mbed LoRaWANStack initialized \r\n");
+
+    // prepare application callbacks
+    callbacks.events = mbed::callback(lora_event_handler);
+    lorawan.add_app_callbacks(&callbacks);
+
+    // Set number of retries in case of CONFIRMED messages
+    if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER)
+            != LORAWAN_STATUS_OK) {
+        printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n");
+        return -1;
+    }
+
+    printf("\r\n CONFIRMED message retries : %d \r\n",
+           CONFIRMED_MSG_RETRY_COUNTER);
+
+    // Enable adaptive data rate
+    if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) {
+        printf("\r\n enable_adaptive_datarate failed! \r\n");
+        return -1;
+    }
+
+    printf("\r\n Adaptive data  rate (ADR) - Enabled \r\n");
+
+    // stores the status of a call to LoRaWAN protocol
+    lorawan_status_t retcode;
+    retcode = lorawan.connect();    
+    if (retcode == LORAWAN_STATUS_OK ||
+            retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) {
+    } else {
+        printf("\r\n Connection error, code = %d \r\n", retcode);
+        return -1;
+    }
+
+    printf("\r\n Connection - In Progress ...\r\n");
+
+    // make your event queue dispatching events forever
+    ev_queue.dispatch_forever();
     
-    ev_queue.call_every(5000,LifeTicker);
+    return 0;
+}
+
+
+static void send_Position_to_Lora(uint8_t OptCode,GPS_Position current_pos)
+{
+    
+    //1Byte Opcode 0x01
+    //4Byte Timestemp
+    //4Byte Longitude
+    //4Byte Latitude 
+    
+    uint8_t tmpbytes[sizeof(float)];  
+    
+    tx_buffer[0] = OptCode;
+        
+    *((float *)tmpbytes) = current_pos.Zeitstempel; 
+    tx_buffer[1] = tmpbytes[0];
+    tx_buffer[2] = tmpbytes[1];
+    tx_buffer[3] = tmpbytes[2];
+    tx_buffer[4] = tmpbytes[3];
+    
+    *((float *)tmpbytes) = current_pos.Longitude; 
+    tx_buffer[5] = tmpbytes[0];
+    tx_buffer[6] = tmpbytes[1];
+    tx_buffer[7] = tmpbytes[2];
+    tx_buffer[8] = tmpbytes[3];
+    
+    *((float *)tmpbytes) = current_pos.Latitude; 
+    tx_buffer[9]  = tmpbytes[0];
+    tx_buffer[10] = tmpbytes[1];
+    tx_buffer[11] = tmpbytes[2];
+    tx_buffer[12] = tmpbytes[3];
+    
+    printf("\tSend Message:%02X:%02X%02X%02X%02X:%02X%02X%02X%02X:%02X%02X%02X%02X \n",
+                    tx_buffer[0],
+                    tx_buffer[1],tx_buffer[2],tx_buffer[3],tx_buffer[4],
+                    tx_buffer[5],tx_buffer[6],tx_buffer[7],tx_buffer[8],
+                    tx_buffer[9],tx_buffer[10],tx_buffer[11],tx_buffer[12]);   
+    send_message();
+}
+
+/**
+ * Sends a message to the Network Server
+ */
+static void send_message()
+{
     
-    //Starte_Fahrrad_Eventmanager(); //schonmal die Fahrrad Events Initialisieren falls wir hier auch ohne lorawan empfang was machen wollen
+    uint16_t packet_len;
+    int16_t retcode;    
+    packet_len = sizeof(tx_buffer);
+
+    retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len,
+                           MSG_UNCONFIRMED_FLAG);
+
+    if (retcode < 0) {
+        retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n")
+        : printf("\r\n send() - Error code %d \r\n", retcode);
+
+        if (retcode == LORAWAN_STATUS_WOULD_BLOCK) {
+            //retry in 3 seconds
+            if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
+                ev_queue.call_in(3000, send_message);
+            }
+        }
+        return;
+    }
+
+    printf("\r\n %d bytes scheduled for transmission \r\n", retcode);
+    memset(tx_buffer, 0, sizeof(tx_buffer));
+}
+
+/**
+ * Receive a message from the Network Server
+ */
+static void receive_message()
+{
+    uint8_t port;
+    int flags;
+    int16_t retcode = lorawan.receive(rx_buffer, sizeof(rx_buffer), port, flags);
+
+    if (retcode < 0) {
+        printf("\r\n receive() - Error code %d \r\n", retcode);
+        return;
+    }
+
+    printf(" RX Data on port %u (%d bytes): ", port, retcode);
+    for (uint8_t i = 0; i < retcode; i++) {
+        printf("%02x ", rx_buffer[i]);
+    }
+        
+    if (rx_buffer[0] == 0xa0) Licht_aus(); 
+    if (rx_buffer[0] == 0xa1)Licht_an();        
+    if (rx_buffer[0] == 0xb1) Blinken_ein();
+    if (rx_buffer[0] == 0xb0) Blinken_aus()   ;   
+   
+   
+    
+    if (rx_buffer[0] == 0xc1)GPS_anfordern();    
+    
+    printf("\r\n");
+    
+    memset(rx_buffer, 0, sizeof(rx_buffer));
+}
 
-    return 0;
+/**
+ * Event handler
+ */
+static void lora_event_handler(lorawan_event_t event)
+{
+    switch (event) {
+        case CONNECTED:
+            LORA_activ=1;
+            printf("\r\n Connection - Successful \r\n");
+
+            //ev_queue.call_every(5000, send_message);
+          
+
+            break;
+        case DISCONNECTED:
+            ev_queue.break_dispatch();
+            printf("\r\n Disconnected Successfully \r\n");
+            break;
+        case TX_DONE:
+            printf("\r\n Message Sent to Network Server \r\n");
+            if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
+                //send_message();
+            }
+            break;
+        case TX_TIMEOUT:
+        
+            LORA_activ=0;
+        case TX_ERROR:
+        case TX_CRYPTO_ERROR:
+        case TX_SCHEDULING_ERROR:
+            printf("\r\n Transmission Error - EventCode = %d \r\n", event);
+            // try again
+            if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
+                send_message();
+            }
+            break;
+        case RX_DONE:
+            printf("\r\n Received message from Network Server \r\n");
+            receive_message();
+            break;
+        case RX_TIMEOUT:
+        case RX_ERROR:
+            printf("\r\n Error in reception - Code = %d \r\n", event);
+            break;
+        case JOIN_FAILURE:
+            printf("\r\n OTAA Failed - Check Keys \r\n");
+            break;
+        case UPLINK_REQUIRED:
+            printf("\r\n Uplink required by NS \r\n");
+            if (MBED_CONF_LORA_DUTY_CYCLE_ON) {
+                send_message();
+            }
+            break;
+        default:
+            MBED_ASSERT("Unknown Event");
+    }
 }
 
 
 
 
 
+// EOF