File content as of revision 10:d98b2dd7ba09:

/* 

Acknowledgements to (c) Craig A. Evans, University of Leeds, Feb 2016 for Temp Library
Acknowledgements to (c) Dr. Edmond Nurellari, University of Lincoln, Dec 2021 for Classes used

Using Various Libraries & Functions in order to create a 
Temperature Based Health Assistive Smart Device
*/ 

/*
======================== Library Imports =======================================
Importing the Header Files from the Class Libraries into the main.cpp
*/
#include "mbed.h"                               // Mbed OS Library
#include "TMP102.h"                             // TMP102 Header File
#include "N5110.h"                              // N5110 Header File 
#include "Bitmap.h"                             // Bitmap Header File 


/*
========================== Vairable Setup ======================================
Pre-Determining the various Variable names to hardware pins on the K64F Board
*/

TMP102 tmp102(I2C_SDA,I2C_SCL);                // Create TMP102 object
N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);     // Create lcd objec
Serial serial(USBTX,USBRX);                    // CoolTerm TX, RX Comms Setup for Debug
AnalogIn SP(PTB2);                             // Potentiometer for Setpoint
//Timer timer();                                 // USE FOR LOGGING BETWEEN 0-10s

DigitalOut RED_led(LED_RED);                   // On-board K64F LED'S
DigitalOut GRN_led(LED_GREEN);
DigitalOut BLU_led(LED_BLUE);

InterruptIn sw2(SW2);                          // On-board K64F Switches
InterruptIn sw3(SW3);
InterruptIn R(PTB3);                         // Right Bumper Button
InterruptIn L(PTB18);                        // Left Bumper Button

volatile int g_R_flag = 0;                    // g_ in order to show it is a global variable. 
volatile int g_L_flag = 0;                    // volatile flag as it will change within the isr

/*======================= Void Declaration ===================================*/
void error();                                  // Error Hang Code Function
void init_serial();                            // Setup serial port Function
void init_K64F();                              // K64F Disabling Onboard Components Function
void R_isr();
void L_isr();
void info();

/*======================== Main Function =====================================*/
int main()
{
    
    init_K64F();                                // Initialise K64F Board
    init_serial();                              // Initialise Serial Port
    tmp102.init();                              // Initialise Temp Sensor
    lcd.init();                                 // Initialise LCD
        
    lcd.setContrast(0.4);                       // Setup the contrast for the LCD Screen
    R.fall(&R_isr);
    R.mode(PullDown);
    
    L.fall(&L_isr);
    L.mode(PullDown);
    
    while (1) {
        
        //timer.start(); 
        //for(i = 0; i < 10; i++){
        // read temperature and print over serial port
        float T = tmp102.get_temperature();             // Reading Temperature as a floating variable
        float Set = SP * 100;                           // Reading Potentiometer as a floating variable. Multiplied by 100 to give larger range        

        while (g_R_flag){                               // Condition to change over into new loop
        g_R_flag = 0;                                   // When the R Flag has been pressed
        R.rise(&R_isr);       
        info();                                         // Call the info function           
        }
        lcd.refresh();                                  
        wait(1.0); 

        if (g_L_flag){                                  // Condition to change over into new loop
        g_L_flag = 0;       
        L.fall(&L_isr);
        serial.printf("T = %f C\n",T);                  // Printing the Temperature over Serial Port
        //serial.printf("%2.2fs: %3.1f deg C\n\r", timer.read(), T);
        
        lcd.clear();                                   // clearing the LCD buffer at the begining of the loop
        lcd.printString("Temperature",0,0);            // Can also pre-determine the co-ordinates of the ',0,0' (must be less than 84 pixels to fit on display)
            
        char buffer[14];                                // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14 Max amound of Characters)
                                                        // Therefor strings csn not exceed the 14 Character Limit
        
        int length = sprintf(buffer,"T=%.2F 'C",T);     // print the temperature from the float variable T
                                                        // it is important the format specifier ensures the length will fit in the buffer
        if (length <= 14)                               // Ensuring string will fit on the screen (Printing at x=0)
            lcd.printString(buffer,0,1);                // display on screen
        
                                                        // Multiplying the Floating variable by 100 in order to gain a larger range 
        length = sprintf(buffer,"SP=%.2F 'C",Set);      // Print the Setpoint from the Float Variable Set 
        if (length <= 14)                               // Ensuring string will fit on the screen (Printing at x=0)
          lcd.printString(buffer,0,2);                  // display on screen
        serial.printf("   SP = %f",  Set);              // 
               
        if (Set < T){                                   // Condition to change over into new loop
        lcd.clear();                                    // clearing the LCD buffer at the begining of the loop
        lcd.printString("Over Heating",3,2);            // Print New Message
        serial.printf("OverTemp");                      // Debugging Print
        }
        lcd.refresh();                                  
        wait(1.0);
                                                     

        
             
    }
}
}

/*
=========================== Void Setup =========================================
Custom Function's are called Void's, which are called upon inside the of the
Main Function Code
*/

void init_serial() {
                                        // Baud Rate Communication for CoolTerm Debugging
    serial.baud(9600);                          
}

void init_K64F() 
{
        // on-board LEDs are active when 0, so setting the pin to 1 turns them off.
    RED_led = 1;
    GRN_led = 1;
    BLU_led = 1;       
                       /* since the on-board switches have external pull-ups, disable the 
                        * internal pull-down resistors that are enabled by default using
                        * the InterruptIn Command */
    sw2.mode(PullNone);
    sw3.mode(PullNone);
}

void R_isr()                            // Right Bumper Interrupt Service     
{
    g_R_flag = 1;                       // set flag in ISR
}

void L_isr()                            // Left Bumper Interrupt Service     
{
    g_L_flag = 1;                       // set flag in ISR
}
void info()
{
        serial.printf(" Information Page Selected ");  // Debugging Print
        lcd.clear();                                   // Clear Screen
        lcd.printString("Info Page",0,0);              // Print Information Screen
        lcd.printString("Author:",0,1);
        lcd.printString("Louis M",0,2);
        lcd.printString("18689006",0,3);
        lcd.printString("Version 1.8",0,4);   
    
}   
/*
 void init_Menu()
{
    
}
*/