main.h

00001 /**
00002 @file main.h
00003 @brief Header file containing functions prototypes, defines and global variables.
00004 @brief Reverse Parking Sensor
00005 @author Andreas Konstantinou 
00006 @date   April 2015
00007 */
00008  
00009 #ifndef MAIN_H
00010 #define MAIN_H
00011 #include "mbed.h"
00012 #include "N5110.h"
00013 #include "SRF02.h"
00014 #include "beep.h"
00015 #include "PowerControl/PowerControl.h"
00016 #include "PowerControl/EthernetPowerControl.h"
00017 
00018 #define USR_POWERDOWN (0x140)
00019 
00020 /**  
00021 @namespace srf02
00022 @brief ultrasonic distance sensor connects to I2C pins SDA and SCL
00023 */
00024 SRF02 srf02(p28,p27); 
00025 
00026 
00027 /**  
00028 @namespace leds
00029 @brief The four LEDs on mbed 
00030 */
00031 BusOut leds(LED4, LED3, LED2, LED1);
00032  
00033 /**  
00034 @namespace lcd
00035 @brief NOKIA 5110 LCD display   
00036 */
00037  N5110 lcd(p7,p8, p9, p10,p11, p13,p26); //vcc,sce,rst,dc,mosi,clk,led  
00038  /**  
00039 @namespace buzzer
00040 @brief a piezo buzzer connected to PWM pin 
00041 */
00042 Beep buzzer(p21); 
00043 
00044  /**  
00045 @namespace led_red
00046 @brief Red led connected to PWM pin for brightness
00047 */
00048 DigitalOut led_red(p24);
00049 
00050  /**  
00051 @namespace led_yellow
00052 @brief Yellowonnected to PWM pin for brightness
00053 */
00054 DigitalOut led_yellow(p23);
00055 
00056  /**  
00057 @namespace led_green
00058 @brief Green led connected to PWM pin for brightness    
00059 */
00060 DigitalOut led_green(p22);
00061 
00062  /**  
00063 @namespace ain2
00064 @brief Analog input for the potentiometer to control the frequency of the buzzer    
00065 */
00066 AnalogIn ain2(p20);
00067 
00068  /**  
00069 @namespace ain1
00070 @brief Analog input for the potentiometer to control the brightness of the lcd    
00071 */
00072 AnalogIn ain1(p19);
00073 
00074  /**  
00075 @namespace button_1
00076 @brief Set button_1 to be interrupt, coonected to GPIO   
00077 */
00078 InterruptIn button_1(p17);
00079 
00080 /**  
00081 @namespace button_2
00082 @brief set button_2 to be interrupt, coonected to GPIO       
00083 */
00084 InterruptIn button_2(p18);
00085 
00086 /**  
00087 @namespace button_3
00088 @brief set button_3 to be interrupt, coonected to GPIO       
00089 */
00090 
00091 InterruptIn button_3(p16);
00092 
00093 /**  
00094 @namespace button_4
00095 @brief set button_4 to be interrupt, coonected to GPIO       
00096 */
00097 InterruptIn button_4(p15);
00098 
00099 /**  
00100 @namespace timer_red
00101 @brief ticker object used to control the time of red LED   
00102 */
00103 Ticker timer_red; 
00104 
00105 /**  
00106 @namespace timer_yellow
00107 @brief ticker object used to control the time of yellow LED   
00108 */
00109 Ticker timer_yellow;
00110 
00111 /**  
00112 @namespace timer_green
00113 @brief ticker object used to control the time of green LED   
00114 */
00115 Ticker timer_green;
00116 
00117 /** Get Avegare distance
00118     *
00119     *   This function gets the avegare distance of 5 values of the sensor   
00120     */
00121 void Get_Average();
00122 
00123 /** Timer Expired red led 
00124     *
00125     *   This function sets the flag of the red led to high    
00126     */
00127 void timerExpired_red();
00128 
00129 /** Button1 Pressed
00130     *
00131     *   This function sets the flag of button 1 to high   
00132     */
00133 void button1_Pressed();
00134 
00135 /** Button2 Pressed
00136     *
00137     *   This function sets the flag of button 2 to high   
00138     */
00139 void button2_Pressed();
00140 
00141 /** Button3 Pressed
00142     *
00143     *   This function sets the flag of button 3 to high   
00144     */
00145 void button3_Pressed();
00146 
00147 /** Button4 Pressed
00148     *
00149     *   This function sets the flag of button 4 to high   
00150     */
00151 void button4_Pressed();
00152     
00153 /** Timer Expired yellow led 
00154     *
00155     *   This function sets the flag of the yellow led to high    
00156     */
00157 void timerExpired_yellow();
00158 
00159 /** Timer Expired green led 
00160     *
00161     *   This function sets the flag of the green led to high  
00162     */
00163 void timerExpired_green();
00164 
00165  /**  Check states of the buttons
00166     *
00167     *   This function checks the status between the buttons 2, 3, and 4 and based on the status of each one then executes the appropiate process   
00168     */
00169 void ButtonsOperation();
00170  
00171  /** Check state of button 1
00172     *
00173     *   This function checks the state of the button 1. if button1 is pressed then 
00174     *   the leds and buzzer start blinking and making sound,repsectively, based on the measurements of the sensor  
00175     */  
00176 void buttonOperation_1();
00177  
00178  /** Check state of button 2
00179     *
00180     *   This functions checks the status of the button 2. if it is pressed then converts 
00181     *   the units of the sensor's measurements from meters to centimeters and displays them on the lcd
00182     */
00183 void buttonOperation_2();
00184  
00185  /** Check state of button 3
00186     *
00187     *   This functions checks the status of the button 3. if it is pressed then a new pattern is showed in the lcd 
00188     *   and displays the measured distance.  
00189     */
00190 void buttonOperation_3();
00191 
00192  /** Check state of button 4
00193     *
00194     *   This functions checks the status of the button 4. if it is pressed then  
00195     *   a new pattern is displayed on lcd and displays the sensor's measurements
00196     */
00197 void buttonOperation_4();
00198 
00199  /** Print Current Time and Date 
00200     *
00201     *   This function sets the current time and date and prints them on the dispaly
00202     */
00203 void Print_Time_Date();
00204 
00205 int timerflag_red  = 0; /*!< timer flag red LED set in ISR */
00206 int timerflag_yellow  = 0;/*!< timer flag yellow LED set in ISR */
00207 int timerflag_green  = 0;/*!< timer flag green LED set in ISR */
00208 int setTimeFlag  = 0;/*!<  time flag set in ISR */
00209 int button1_flag =0; /*!< button 1 flag set in ISR */
00210 int button2_flag =0;/*!< button 2 flag set in ISR */
00211 int button3_flag =0;/*!< button 3 flag set in ISR */
00212 int button4_flag =0;/*!< button 4 flag set in ISR */
00213 char buffer [5];  /*!< buffer used to display characters on lcd, each character is 6 pixels wide, screen is 84 pixels (84/6 = 14maximum)*/
00214 float a1 ;/*!< a1 used to control the brightness of the LED background display by getting the value of the potentiometer1 */
00215 float a2 ;/*!< a2 used to control the frequency of the buzzer by getting the value of the potentiometer2*/
00216 float distance =0;/*!<this global variable used to get the average of 5 values of sensor */ 
00217 float Distance_Array [5]; /*!< Distance_Array used to store 5 values of the sensor*/
00218 
00219 #endif