main.cpp

00001 #include "mbed.h"                               //Include the mbed.h file   
00002 #include "rtos.h"                               //include the RTOS.h file
00003 #include "LM75B.h"                              //include the LM75B.h file
00004 #include "C12832.h"                             //include the C12832.h file
00005 
00006 C12832 lcd(p5, p7, p6, p8, p11);                //Setup the LCD
00007 
00008 LM75B sensor(p28,p27);                          //Setup the Temp Sensor I2C
00009 Serial pc(USBTX,USBRX);                         //Setup the serial comm
00010 
00011 float Temp_Value;                               //global var for temp
00012      
00013 PwmOut spkr(p26);                               //PWM speaker
00014 PwmOut LED_red(p23);                            //PWM LED red
00015 PwmOut LED_blue(p25);                           //PWM LED blue
00016         
00017 DigitalOut led1(LED1);                          //Setup LED1 to the varible name led1
00018 DigitalOut led2(LED2);                          //Setup LED2 to the varible name led2
00019 
00020 Mutex Temp_Mutex;                               //Setup Mutex
00021  
00022  
00023 void Tempature_Senor(void const *args) {        //Function or the thread to be called
00024 
00025      
00026     if (sensor.open()) {                        //Try to open the LM75B
00027         printf("Device detected!\n");           //printf if device connects
00028 
00029         while (1) {
00030             lcd.cls();                          //Clears LCD
00031             lcd.locate(0,3);                    //Locartion on LCD display
00032             Temp_Mutex.lock();                  //Mutex Lock sensor
00033             lcd.printf("Temp = %.3f\n", (float)sensor); //Print Temp value on LCD
00034             Temp_Value = (float)sensor;         //read sonsor and store in Temp_value
00035             Temp_Mutex.unlock();                //Mutex unlock sensor
00036             Thread::wait(1.0);                  //Thread wait
00037         }
00038 
00039     } else {
00040         error("Device not detected!\n");        //Printf on serial if error
00041     }                                           //End Super loop
00042 }  
00043  
00044 void Speaker(void const *args) {                //Function or the thread to be called
00045     while (true) {                              //Super loop
00046         spkr.period(1.0/5000);                  //set period        
00047         spkr = 0.25;                            //set PWM      
00048         Thread::wait(800);                      //Thread wait
00049         spkr.period(1.0/3000);                  //set period 
00050         spkr = 0.25;                            //set PWM 
00051         Thread::wait(800);                      //Thread wait            
00052     }                                           //End Super loop
00053 }  
00054  
00055 void led_R_B_flash(void const *args) {          //Function or the thread to be called
00056     while (true) {                              //Super loop
00057     
00058         LED_red = 0.5;                          //PWM LED to half brightness
00059         LED_blue = 1;                           //Turn blue LED off
00060         Thread::wait(800); 
00061         LED_red = 1;                            //Turn red LED off   
00062         LED_blue = 0.5;                         //PWM LED to half brightness                       
00063         Thread::wait(800);                      //Thread wait
00064     }                                           //End Super loop
00065 }                                               //End Function / thread
00066  
00067 int main() {                                    //Main
00068     float local_Temp_V=0;                       //SETup local var
00069     Thread thread_Temp(Tempature_Senor);        //start thread
00070     Thread thread_LED_Flash(led_R_B_flash);     //start thread      
00071     Thread thread_Speaker_Sound(Speaker);       //start thread
00072     
00073         while (1) {
00074             Temp_Mutex.lock();                  //Mutex lock temp value
00075             local_Temp_V = Temp_Value;          //store temp value in local variable
00076             Temp_Mutex.unlock();                //mutex unlock
00077             printf("Temp = %.3f\n", local_Temp_V );     //printf on serial of local temp value       
00078             Thread::wait(1.0);                  //thread wait
00079         }
00080 
00081     
00082 }                                       //End main