Diff: main.cpp

Revision:

0:1ca8ba125793

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon May 11 21:36:26 2015 +0000
@@ -0,0 +1,247 @@
+#include "mbed.h"
+#include "SRF02.h"
+#include "N5110.h"
+#include "Beep.h"
+#include "PowerControl/PowerControl.h"
+#include "PowerControl/EthernetPowerControl.h"
+
+#define USR_POWERDOWN   (0x104)
+int semihost_powerdown()
+{
+
+    uint32_t arg;
+    return __semihost(USR_POWERDOWN, &arg);
+
+}
+
+
+
+//initialise pin
+N5110 lcd(p7,p8,p9,p10,p11,p13,p26); //pins used for sensor
+SRF02 sensor(p28, p27); //pins used for the range finder sensor
+InterruptIn button(p16); // pins used for buttons to change mode
+Beep buzzer(p21); //pins used for buzzeer
+PwmOut red(p24); //pins for red LED
+PwmOut green(p23); //pins for green LED
+
+//variables
+int buttonFlag=0;
+int distance;
+int mode2=0;
+
+
+//functions to callback
+void intro();
+void getSensorValue();
+void readMode1();
+void rangeAction1();
+void rangeAction2();
+void rangeAction3();
+void buttonPressed();
+void readMode2();
+
+int main()
+{
+    PHY_PowerDown();
+    int result = semihost_powerdown();
+
+    lcd.init();
+    intro(); // to display the intro message
+    lcd.clear();
+
+    button.rise(&buttonPressed); // trigger event on rising edge
+    while(1) {
+
+        int distance = sensor.getDistanceCm();
+        char buffer[14];
+        int length = sprintf(buffer,"D= %d cm",distance);
+        if(length<=14)
+        lcd.printString(buffer,7,3);
+        readMode1();
+        wait(1);
+        lcd.clear();
+        lcd.refresh();
+
+        if (buttonFlag) {
+
+            mode2 =~ mode2;
+            buttonFlag = 0;
+        }
+
+        if (mode2) {
+            getSensorValue();
+            readMode2();
+            lcd.clear();
+
+        }
+
+    }
+}
+
+//welcome message (name, id, project name)
+void intro()
+{
+
+    lcd.printString("Measure Up!",2,0);
+    lcd.printString("Nur Faqihah", 2,2);
+    lcd.printString("Abd Razak", 2,3);
+    lcd.printString("200907347", 2,4);
+    lcd.refresh();
+    wait (3.0);
+}
+
+//to get distance reading from the sensor
+void getSensorValue()
+{
+    distance = sensor.getDistanceCm();
+}
+
+
+// actions for mode 1 based on the disatance range 
+void readMode1()
+{
+    if (distance >= 235) {
+
+        lcd.refresh();
+        rangeAction1();
+
+    } else if (distance >= 176 & distance <= 234) {
+        lcd.refresh();
+        rangeAction1();
+
+    } else if (distance >= 150 & distance <= 175) {
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 135 & distance <= 149) {
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 105 & distance <= 134) {
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 75 & distance <= 104) {
+        lcd.refresh();
+        rangeAction3();
+
+    } else if (distance >= 46 & distance <= 74) {
+        lcd.refresh();
+        //rangeAction3();
+
+    } else if (distance <= 45) {
+        red = 1;
+        buzzer.beep(1000, 60);
+    }
+}
+
+
+// actions for mode 2 based on the disatance range 
+void readMode2()
+{
+    if (distance >= 235) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Too Long!",6,2);
+        lcd.refresh();
+        rangeAction1();
+
+    } else if (distance >= 176 & distance <= 234) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Too Long!",6,2);
+        lcd.refresh();
+        rangeAction1();
+
+    } else if (distance >= 150 & distance <= 175) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Okay!",2,2);
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 135 & distance <= 149) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Okay!",2,2);
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 105 & distance <= 134) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Okay!",2,2);
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 75 & distance <= 104) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Okay!",2,2);
+        lcd.refresh();
+        rangeAction2();
+
+    } else if (distance >= 46 & distance <= 74) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Too Short!",2,2);
+        lcd.refresh();
+        rangeAction3();
+
+    } else if (distance <= 45) {
+
+        lcd.printString("Distance",4,1);
+        lcd.printString("Too Short!",2,2);
+        lcd.refresh();
+        red = 1;
+        buzzer.beep(1000, 60);
+    }
+}
+
+//Interrupt Service Routine
+void buttonPressed()
+{
+    buttonFlag = 1;
+}
+
+//Actions when range action 1 is achieved
+void rangeAction1(){
+    
+    red = 0;
+    green = 1;
+    buzzer.beep(1000,0.5);
+    wait(1);
+    buzzer.nobeep();
+    
+}
+
+//Actions when range action 2 is achieved
+void rangeAction2(){
+    
+    red = 0;
+    green = 0;
+    buzzer.beep(1000,1);
+    wait(0.5);
+    buzzer.nobeep();
+    
+}
+
+//Actions when range action 3 is achieved
+void rangeAction3(){
+    
+    red = 1;
+    green = 0;
+    buzzer.beep(1000,0.5);
+    wait(0.2);
+    buzzer.nobeep();
+    
+}
+    
+    
+    
+    
+    
+    
+
+
+