Diff: main.cpp

Revision:

0:71f4b2285994

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 05 11:31:50 2016 +0000
@@ -0,0 +1,198 @@
+#include "mbed.h"
+#include "SRF02.h"
+#include "N5110.h"
+#include "SDFileSystem.h"
+/** ELEC2645 Project
+*Finalised Project for submission
+*/
+
+//         VCC,    SCE,   RST,   D/C,   MOSI,  SCLK,   LED
+N5110 lcd (PTE26 , PTA0 , PTC4 , PTD0 , PTD2 , PTD1 , PTC3);  // mbed pins
+SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS, SD Card Connections
+SRF02 Sensor(PTE25,PTE24);//Distance Sensor
+
+// External LED's
+DigitalOut LEDY(PTC5);
+DigitalOut LEDG(PTC7);
+
+// K64F on-board LEDs
+DigitalOut r_led(LED_RED);
+DigitalOut g_led(LED_GREEN);
+DigitalOut b_led(LED_BLUE);
+
+// K64F on-board switches
+InterruptIn sw2(SW2);
+InterruptIn sw3(SW3);
+
+// External Switches
+DigitalIn Sw1(PTB19);
+DigitalIn Sw2(PTB18);
+
+//Buzzer
+PwmOut buzzer(PTA2);
+
+void D_Sensor();//Timer and Sensor Function
+void delete_file(char filename[]); //Delete Save file
+void init_K64F();// set-up the on-board LEDs and switches
+void Buzzer(); //Buzzer
+void Parking_Sensor();//Parking Sensor Program
+char buffer[14];
+
+Timer timer; //Initiate timer
+int T;//Create time variable
+
+int main()
+
+{
+    Sw1.mode(PullDown);
+    Sw2.mode(PullDown);
+
+    init_K64F();//initialise ob-board LED's and switches
+    lcd.init();//initialise screen
+    lcd.refresh(); //refresh
+
+    lcd.printString("ELEC 2645",15,1);
+    lcd.printString("Sensor",24,2);
+    lcd.printString("Andy Ruffley",7,4);
+    lcd.printString("200887845",16,5);
+    wait(3);
+    lcd.clear();
+
+    lcd.printString("Program Select",0,0);
+    lcd.printString("Parking Sensor",0,2);
+    lcd.printString("Motion Sensor",3,3);
+    lcd.printString("200887845",16,5);
+
+
+    while(1) {
+
+        int program = Sw1+Sw2+Sw2;
+        switch (program) {
+
+            case 1:
+                lcd.clear();
+                lcd.printString("Parking Sensor",0,2);
+                lcd.refresh();
+                wait(2);
+                lcd.clear();
+                while(1) {
+                    Parking_Sensor();
+                }
+
+
+            case 2:
+                lcd.clear();
+                lcd.printString("Motion Sensor",3,3);
+                lcd.refresh();
+                wait(2);
+                lcd.clear();
+                while(1) {
+                    D_Sensor();
+                }
+        }
+    }
+}
+//End of programme
+
+
+
+//Start of functions
+
+//Program 1
+void Parking_Sensor()
+{
+    int Array[5]; //Create an array
+    int Total = 0; //Create and set a variable
+    int count = 0; //Create and set a variable
+    int Distance; //Create a variable
+
+    for(count = 0; count < 5; count++) { //Set limits
+        Array[count] = Sensor.getDistanceCm(); //Take sensor readings
+        Total = Total + Array[count]; //Add sensor readings to variable
+    }
+    Distance = Total/5; // Calculate average
+    lcd.drawRect(0,0,5,47,2);//Draw white fill rectangle
+    lcd.drawRect(0,0,5,(Distance/4.3),1); //Draw black fill rectangle
+    float distance = sprintf(buffer,"%d cm",Distance);
+    if (distance <=14) {
+        lcd.printString(buffer,10,1); //print reading
+        // short delay before next measurement
+        wait(0.5);
+    }
+    if (Distance <30) {
+        Buzzer();//Activate Buzzer function
+        LEDY=1;
+        LEDG=0;
+    } else  {
+        buzzer = 0;//Turn off buzzer
+        LEDY=0;
+        LEDG=1;
+    }
+}
+
+//program 2
+void D_Sensor()
+{
+    int Distance;
+    Distance = Sensor.getDistanceCm();//reads distance
+
+    float distance = sprintf(buffer,"%d cm",Distance);
+    if (distance <=14) {
+        lcd.printString(buffer,10,1);//prints distance
+        // short delay before next measurement
+        wait(0.5);
+    }
+    timer.start();
+    T = timer.read();
+    float Time_E = sprintf(buffer,"%d S",T);
+    if (Time_E <=14) {
+        lcd.printString(buffer,7,2); //prints time
+    }
+    if (Distance<50) {
+        FILE *fp; // this is our file pointer
+        delete_file("/sd/Time_Log.txt");
+        int Time = T;//Creates Variable and sets to T
+        fp = fopen("/sd/Time_Log.txt", "a");
+        lcd.printString("Saved",15,3);
+        fprintf(fp, "%d",Time); // ensure data type matches
+        fclose(fp);  // ensure you close the file after writing
+    }
+}
+
+
+
+//Extra Functions
+
+void Buzzer()
+{
+    buzzer.period_ms(1); //1KHz frequency
+    buzzer = 0.05; //50% Duty cycle
+    wait(1);
+    buzzer.period_ms(2); //500Hz frequency
+}
+
+void delete_file(char filename[])
+{
+
+    FILE *fp = fopen(filename, "r");  // try and open file
+    if (fp != NULL) {  // if it does open...
+        fclose(fp);    // close it
+        remove(filename);  // and then delete
+
+    }
+    // if we can't open it, it doesn't exist and so we can't delete it
+}
+
+void init_K64F()
+{
+    // on-board LEDs are active-low, so set pin high to turn them off.
+    r_led = 1;
+    g_led = 1;
+    b_led = 1;
+
+    // since the on-board switches have external pull-ups, we should disable the internal pull-down
+    // resistors that are enabled by default using InterruptIn
+    sw2.mode(PullNone);
+    sw3.mode(PullNone);
+
+}