Diff: main.cpp

Revision:

0:f930f0440fd5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 26 10:35:50 2019 +0000
@@ -0,0 +1,228 @@
+#include "mbed.h"
+#include "hcsr04.h"
+#include "SDBlockDevice.h"
+#include  "FATFileSystem.h"
+//#include "MQTTTimer.h"
+//#include "CayenneMQTTClient.h"
+//#include "MQTTNetworkIDW01M1.h"
+#include "lorawan_network.h"
+#include "CayenneLPP.h"
+#include "mbed_events.h"
+#include "mbed_trace.h"
+#include "lora_radio_helper.h"
+#include "SX1276_LoRaRadio.h"
+#include "LoRaWANInterface.h"
+//#include "stm32_standby.h"
+
+
+
+
+//#define STANDBY_TIME_S                 1* 60
+
+extern EventQueue ev_queue;
+
+static uint32_t DEV_ADDR_1   =      0x260118FA;
+static uint8_t NWK_S_KEY_1[] =      { 0x5D, 0xD5, 0xC9, 0x84, 0xB9, 0xCE, 0x26, 0x05, 0xB7, 0x61, 0xBF, 0x9F, 0x3C, 0x2D, 0x4E, 0x14 };
+static uint8_t APP_S_KEY_1[] =      { 0xF0, 0xE4, 0xA1, 0xEB, 0x1F, 0xB5, 0x6E, 0xBA, 0x31, 0x69, 0x80, 0x9D, 0x85, 0x92, 0x68, 0xB4 };
+SDBlockDevice sd(PC_12, PC_11, PC_10, D10);// mosi, miso, sclk, cs
+FATFileSystem fs("sd");
+FlashIAP flash;
+ 
+void apply_update(FILE *file, uint32_t address);
+ 
+HCSR04 sensor(D4, D3);
+//Serial pc(USBTX, USBRX);
+//FILE *fp;                                   // File pointer declear
+
+
+int dw,d,M,y,h,m,s;  //VARIABLES FOR TIME AND YEAR
+
+
+//global variable
+long distance;
+
+ bool dist_updated = false;
+ float volume;  
+
+
+    
+void dist_measure(){
+    sensor.start();
+    wait_ms(100); 
+    distance=sensor.get_dist_cm();
+    volume = 6*6*(2-(distance*0.01));
+    dist_updated = true;
+    
+    }
+    
+void check_for_updated_dist() { 
+
+    if (dist_updated){
+        dist_updated = false ;
+        printf("Measure Distance = %ld ",distance);
+        printf("Volume=%3.0f\n", volume);
+        
+        CayenneLPP payload(50);
+        float volume_value = volume;
+        printf("Volume_value=%f\n", volume_value);
+        payload.addAnalogInput(4, volume_value);
+        
+        if (!lorawan_send(&payload)){
+           // delete distance;
+           // standby(STANDBY_TIME_S);
+           
+            }
+        }
+    }
+/*void SetDateTime(int year = 2019, int mon = 1, int day = 1, int hour = 0, int min = 0, int sec = 0) {
+    struct     tm Clock;
+    Clock.tm_year = year - 1900;
+    Clock.tm_mon  = mon - 1;      // note: subtract 1 
+    Clock.tm_mday = day;
+    Clock.tm_hour = hour;
+    Clock.tm_min  = min;
+    Clock.tm_sec  = sec;
+    time_t epoch = mktime(&Clock);
+    if (epoch == (time_t) -1) {
+        error("Error in clock setting\n");
+        // Stop here
+    }
+    set_time(epoch);
+}*/
+
+static void lora_event_handler(lorawan_event_t event) {
+    switch (event) {
+        case CONNECTED:
+            printf("[LNWK][INFO] Connection - Successful\n");
+            break;
+        case DISCONNECTED:
+            ev_queue.break_dispatch();
+            printf("[LNWK][INFO] Disconnected Successfully\n");
+            break;
+        case TX_DONE:
+            printf("[LNWK][INFO] Message Sent to Network Server\n");
+            
+         //   delete distance;
+            //standby(STANDBY_TIME_S);
+             
+            break;
+        case TX_TIMEOUT:
+        case TX_ERROR:
+        case TX_CRYPTO_ERROR:
+        case TX_SCHEDULING_ERROR:
+            printf("[LNWK][INFO] Transmission Error - EventCode = %d\n", event);
+             
+
+            //delete distance;
+           // standby(STANDBY_TIME_S);
+           
+            break;
+        case RX_DONE:
+            printf("[LNWK][INFO] Received message from Network Server\n");
+            receive_message();
+            break;
+        case RX_TIMEOUT:
+        case RX_ERROR:
+            printf("[LNWK][INFO] Error in reception - Code = %d\n", event);
+            break;
+        case JOIN_FAILURE:
+            printf("[LNWK][INFO] ABP Failed - Check Keys\n");
+            break;
+        default:
+            MBED_ASSERT("Unknown Event");
+    }
+}
+
+void sd_write(){ 
+   
+ //END OF CODE USED FOR OBTAINING TIME
+    sensor.start();
+    wait_ms(100); 
+    long distance=sensor.get_dist_cm();
+     printf("distance is %dcm\n", distance);
+     wait_ms(1000);      
+     
+    }
+ int main() {
+          
+    printf("=========================================\n");
+    printf("      Water Level Monitoring System        \n");
+    printf("=========================================\n");
+     char date[64];      //string for storing the current date
+    char timeofday[64]; //string for storing the current time
+    
+       struct tm t;        //time structure for setting the time
+   
+    //set time structure to 20 Sep 2016 00:31:01
+    time_t rawtime;
+    //time_t seconds;     //time_t variable to read the number of seconds since January 1, 1970 for time calculations 
+   //set_time(rawtime);
+  struct tm * timeinfo;
+
+  time ( &rawtime );
+  timeinfo = localtime ( &rawtime );
+  
+  printf ( "Current local time and date: %s", asctime (timeinfo) );
+    t.tm_year = 2019 - 1900;
+    t.tm_mon = 6 - 1;
+    t.tm_mday = 19;
+    t.tm_hour = 14;
+    t.tm_min = 23;
+    t.tm_sec = 8;
+         
+    
+    //use the time structure and set the real-time clock (RTC) time
+    set_time(mktime(&t));
+    while (true)
+    {
+    lorawan_setup(DEV_ADDR_1, NWK_S_KEY_1, APP_S_KEY_1, lora_event_handler);
+
+    printf("Measuring Distance...\n");
+  
+    //immediately measure the distance
+     sensor.start();
+     wait_ms(100);
+     distance = sensor.get_dist_cm();
+    printf("Measuring Dist =%ld...\n",distance);
+     
+   
+    // Try to mount the filesystem.
+   printf("Mounting the filesystem... ");
+ 
+    int err = fs.mount(&sd);
+    printf("%s\r\n", (err ? "Failed :(\r\n" : "OK\r\n"));
+    if (err)
+        return err;    
+      
+      // Open a file.
+    printf("Opening file '/sd/mylogger.txt'... ");
+    FILE*  fp = fopen("/sd/mylogger.txt", "a");            // File open for "a"ppend
+    if (fp == NULL) {                               // Error!
+           // printf("Unable to write the file\r\n");
+           
+        } 
+        else {
+             char buffer[64];
+        strftime(buffer, 64, "%I:%M %p\n", localtime(&rawtime));
+       // printf("Time as a custom formatted string = %s", buffer);
+        time_t seconds = time(NULL);                                           //read the new time value
+        strftime(date, 64, "%d/%m/%y", localtime(&rawtime));            //create a date string from the time value
+        strftime(timeofday, 64, "%H:%M:%S", localtime(&rawtime));       //create a time string from the time value     
+        fprintf(fp, "%s %s %dcm\r\n", date, timeofday, distance);   //write the date string, time string, and analog integer value to the file
+                                                                                //the /r/n combination puts the entries on different lines in the file
+    //printf("%dcm ",distance);          // Append data to SD card.
+    //fprintf(fp, "%dcm\r\n",distance);        // Serial monitor.
+        }
+    fclose(fp); 
+                                       // Cloce file.
+                                       wait(20);
+    printf("File successfully written!\r\n");    // Serial monitor.    
+    dist_measure();
+    ev_queue.call_every(3000, &check_for_updated_dist);       
+    ev_queue.dispatch_forever();
+
+     printf ( "Current local time and date: %s", asctime (timeinfo) );
+      
+    }  
+    
+}
\ No newline at end of file