Diff: main.cpp

Revision:

3:65349fe42061

Parent:

1:b0c480b628cd

Child:

5:c802be973546

--- a/main.cpp	Thu Dec 17 18:50:20 2020 +0000
+++ b/main.cpp	Fri Dec 18 19:36:51 2020 +0000
@@ -1,32 +1,94 @@
 #include "mbed.h"
 #include "NTPClient.h"
-#include "uLCD_4DGL.h"
 #include "EthernetInterface.h"
 #include "HTTPClient.h"
 #include "SDFileSystem.h"
-//Geolocation output to LCD and SD card reader
-//Code based on: https://os.mbed.com/users/tlisowski3/notebook/geolocation-and-ntp-clock-on-ulcd-144-g2/
+#include "MMA8452Q.h"
+#include "alarm.h"
 
-//Set up Networking, LCD and SD Card reader
-uLCD_4DGL uLCD(p9,p10,p11); // serial tx, serial rx, reset pin;
-SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card, SPI pins
-EthernetInterface eth;
-NTPClient ntpClient;
+//Set up 
+SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card
+MMA8452Q accel(p28, p27, 0x1D); //Accelerometer
+InterruptIn ain1(p16); //Temperature Sensor Interrupt
+AnalogIn ain(p15); //Temperature Sensor input
 HTTPClient httpClient;
+Thread thread; //Temperature check thread
+Thread accelerometer; //Accelerometer check thread
+Timer Clock; //Timer for timestamps
+
 
 void parse(char buffer[], int *j, char *string); //FUNCTION TO PARSE HTTP GET DATA
 void sdlog(int type, float time, float input0, char input1[], char input2[], char input3[]); //Function to write to the SD card
 char httpGetData[200]; //BUFFER TO HOLD DATA FROM HTTP GET REQUEST
- 
+int location(); //Function to get the location data
+void temperature(); //Outputs the temeprature to LCD and SD card
+void tempchange_thread(); //Temperature function to check value exceeds limits
+void accel_thread(); //Function to measure the accelerometer
+
 int main() {
+    Clock.start(); //Start timer
+    accel.init(); //initalize accelerometer
+    thread.start(tempchange_thread); //Start temperature check thread
+    accelerometer.start(accel_thread); //Start accelerometer thread
+    ain1.rise(tempchange_thread);
+    ain1.fall(tempchange_thread);
+
+
+
     //Display Settings
     uLCD.baudrate(115200); //Baudrate of display
     uLCD.cls();    //Clear uLCD screen
-    uLCD.background_color(BLACK); //SET BACKGROUND COLOR TO WHITE
-    uLCD.color(WHITE);
-    uLCD.locate(0,0);  //Start printing on col0, row0
-    uLCD.printf("Getting Location \nInformation...");
+    uLCD.background_color(BLACK); //Background colour
+    uLCD.color(WHITE);  //Text colour
+    
+    
+    while(true){ //Loop to control timing of temperature and location updates
+        location();
+        for (int k = 0; k < 20; k++){ //Temperature fcn runs every 30 seconds, location fcn runs every 10 minutes
+            temperature();  
+            wait(30); //waits 30 seconds before running the fcn again
+            } 
+        }
+}
+
 
+void parse(char buffer[], int *j, char *string) {
+//extracts next location string data item from buffer
+    int i=0;
+    for (i=0; i<=strlen(buffer); i++) {  //TOTAL SIZE OF RETURNED DATA
+        if ((buffer[*j+i] == ',')||(buffer[*j+i] == '\0' )) { //IF comma or end of string
+            //comma is the string field delimiter
+            string[i]=0; //SETS END OF STRING TO 0
+            *j=*j+i+1; //UPDATES to 1 after comma seperated value
+            break;
+        } else string[i]=buffer[*j+i]; //Keep adding to the string
+    }
+}
+
+void sdlog(int type, float time, float input0, char input1[], char input2[], char input3[]){
+     FILE *file;
+    switch (type){
+    case 0:
+            file = fopen("/sd/location.txt", "w");
+        fprintf(file, "TIME: %f, Latitude: %s Longitude: %s, City: %s\n\r", time, input1, input2, input3);
+        fclose(file);
+        break;
+    case 1:
+            file = fopen("/sd/temperature.txt", "w");
+        fprintf(file, "TIME: %f, %f degC\n\r", time, input0);
+        fclose(file);
+        break;
+    case 2:
+            file = fopen("/sd/acceleration.txt", "w");
+        fprintf(file, "TIME: %f, WARNING: LOAD EXCEDDED MAXIMUM ALLOWED ANGLE\n\r", time);
+        fclose(file);
+        break;
+    default:
+    break;
+    }
+}
+
+int location(){
     eth.init(); //USE DHCP to get local IP address
     eth.connect(); //Connect to the network
         
@@ -62,50 +124,103 @@
         uLCD.printf("HTTP Error %d", r);
         return -1;
     }
-    sdlog(0, 1, 2, latitude, longitude, city);// Save info to SD card
-    //Print Location Information
-    uLCD.cls();
+    sdlog(0, Clock.read(), 2, latitude, longitude, city);// Save info to SD card
+    eth.disconnect();      //DISCONNECT FROM THE NETWORK 
+        //Print Location Information
     uLCD.locate(0,0);
+    uLCD.textbackground_color(BLACK);
     uLCD.printf("%s, %s\n",city,countryFull); //Print City and Country
     uLCD.printf("LAT:%s\nLONG:%s\n",latitude,longitude); //LATITUDE AND LONGITUDE 
-    uLCD.printf("Timezone:\n%s",timeZone); //PRINT TIMEZONE
-    eth.disconnect(); //DISCONNECT FROM THE NETWORK 
+    return 1;
+    }
+  
+  
+  
+void accel_thread(){
+        
+        float X=accel.readX();
+        float Y=accel.readY();
+        
+        while(true){ 
+        if((X <-0.6 && X>=-0.9)||(X >0.6&&X<=0.9)||(Y <-0.6 && Y>=-0.9)||(Y >0.6 && Y<=0.9)){
+            uLCD.textbackground_color(RED);
+            uLCD.locate(0, 5);      // setting  cursor on LED
+            uLCD.printf("WARNING");
+            uLCD.locate(0,6);
+            uLCD.printf("CONTAINER UNSTABLE");
+            uLCD.locate(0,7);
+            uLCD.printf("CHECK CONTAINER");
+                        }
+        else if ((X<-0.9)||(X>0.9)||(Y<-0.9)||(Y>0.9)){
+           soundalarm(); //Sounds alarm
+           sdlog(2, Clock.read(), 0,0,0,0); //Records tipping to SD card with timestamp
+            uLCD.textbackground_color(RED);
+            uLCD.locate(0,5);      // Move cursor
+            uLCD.printf("WARNING");
+            uLCD.locate(0,6);
+            uLCD.printf("CONTAINER INVERTED");
+            uLCD.locate(0,7);
+            uLCD.textbackground_color(BLUE);
+            uLCD.printf("Press to clear");    
+            }
+            else{
+            uLCD.textbackground_color(BLACK);
+            uLCD.locate(0,5);      // setting  cursor on LED
+            uLCD.printf("--------------");
+            uLCD.locate(0,6);
+            uLCD.printf("Container Stable");
+            uLCD.locate(0,7);
+            uLCD.printf("--------------");
+                }
+        }
+  }
+  
     
-}
-
-//SET FOR CSV FORMAT: NEEDS TO BE EDITED IF DIFFERENT FORMAT
-void parse(char buffer[], int *j, char *string) {
-//extracts next location string data item from buffer
-    int i=0;
-    for (i=0; i<=strlen(buffer); i++) {  //TOTAL SIZE OF RETURNED DATA
-        if ((buffer[*j+i] == ',')||(buffer[*j+i] == '\0' )) { //IF comma or end of string
-            //comma is the string field delimiter
-            string[i]=0; //SETS END OF SRTRING TO 0
-            *j=*j+i+1; //UPDATES to 1 after comma seperated value
-            break;
-        } else string[i]=buffer[*j+i]; //Keep adding to the string
+void tempchange_thread(){ //Constantly checking if temperature goes above 20C
+    
+    float tempnotright;
+    float change;
+    change = ain1.read() * 3.3;
+    tempnotright = (change - 0.5) * 100.0;
+    
+    if (tempnotright > 20) {
+        uLCD.locate(0,9);
+        uLCD.textbackground_color(BLACK);
+        uLCD.printf("%fs: %f C", Clock.read(), tempnotright);
+        uLCD.locate(0,10);
+        uLCD.textbackground_color(RED);
+        uLCD.printf("CORRECTION NEEDED!");
+        soundalarm();
+        sdlog(1, Clock.read(), tempnotright,0,0,0);
+          }
+         Thread:: wait(5);
     }
-}
 
-void sdlog(int type, float time, float input0, char input1[], char input2[], char input3[]){
-     FILE *file;
-    switch (type){
-    case 0:
-            file = fopen("/sd/location.txt", "w");
-        fprintf(file, "TIME: %f, Latitude: %s Longitude: %s, City: %s\n\r", time, input1, input2, input3);
-        fclose(file);
-        break;
-    case 1:
-            file = fopen("/sd/temperature.txt", "w");
-        fprintf(file, "TIME: %f, %f degC\n\r", time, input0);
-        fclose(file);
-        break;
-    case 2:
-            file = fopen("/sd/acceleration.txt", "w");
-        fprintf(file, "TIME: %f, WARNING: LOAD EXCEDDED MAXIMUM ALLOWED ANGLE\n\r", time);
-        fclose(file);
-        break;
-    default:
-    break;
-    }
-}
\ No newline at end of file
+
+    void temperature(){ //Sort LCD
+        float voltage_in;
+        float degrees_c;
+        int i;
+                for(i = 0; i < 1000; i++) {
+            voltage_in = ain * 3.3;
+            degrees_c = (voltage_in - 0.5) * 100.0;
+            uLCD.locate(0,9);
+            uLCD.textbackground_color(BLACK);
+            uLCD.printf("%fs: %f C", Clock.read(), degrees_c);
+            
+            if(degrees_c <= 20){ //Correct Temp Range
+                sdlog(1, Clock.read(), degrees_c,0,0,0);
+                uLCD.locate(0,10);
+                uLCD.textbackground_color(GREEN);
+                uLCD.printf("Correct Temperature");
+
+            }
+            else{ //Incorrect Temp Range
+                soundalarm();
+                sdlog(1, Clock.read(), degrees_c,0,0,0);
+                uLCD.textbackground_color(RED);
+                uLCD.locate(0,10);
+                uLCD.printf("CORRECTION NEEDED!");
+            }
+        }
+        }
\ No newline at end of file