File content as of revision 0:38c3afd99aeb:

#include "CAN_library.h"
#include "screen_library.h"

LCD_DISCO_F469NI lcd;                       //Initialize LCD Display
SD_DISCO_F469NI sd;                         //Initialize SD Card
Serial pc(USBTX, USBRX);                  //Initialize Serial. This is used only while debuging code.
CAN can(PB_5, PB_13);                       //Initialize CAN.
InterruptIn change_screen_input(D0);        //Initialize Digital input for Change screen button

// Variables received from DTA, LVDTs and brakes
uint16_t Rpm0=0,Speed0=0,Gear0=0,Water_Temp0=0,Oil_Temp0=0,TPS0=0,Brakes0=0,Oil_P0=0,MAP0=0,Air_Temp0=0,Lambda0=0,Volts0=0,Crank0=0;
uint16_t Rpm=0,Speed=0,Gear=0,Water_Temp=0,Oil_Temp=0,TPS=0,Brakes=0,Oil_P=0,MAP=0,Air_Temp=0,Lambda=0,Volts=0,Crank=0;
int FL_LVDT0=0,FR_LVDT0=0,RL_LVDT0=0,RR_LVDT0=0,FL_LVDT=0,FR_LVDT=0,RL_LVDT=0,RR_LVDT=0;
//Referrent LVDT values. First received value is referrent.
int FL_LVDT_Ref,FR_LVDT_Ref,RL_LVDT_Ref,RR_LVDT_Ref;

uint8_t change_flag=0;
uint16_t rx_flag=0x0000;        // Receive specific CAN data message
uint8_t lvdtref=0x0F;          // Flag if refferent LVDT value is received (first received LVDT value, 1=no, 0=yes). From highest to lowest bit: LL,LR,RL,RR.
uint8_t screen_flag=0x01;       // Current screen flag. 1=Main, 2=First Aux, 3=Second Aux.
uint8_t ft_main_flag=1;         // Detect first time Main screne in loop
uint8_t ft_2aux_flag=1;         // Detect first time Second Aux screne in loop

// CAN Message variables, one variable for each ID
// If new IDs are added, add variables for them
CANMessage msgDTA1;         // RPM, TPS %, Water temp C, Air temp C
CANMessage msgDTA2;         // MAP Kpa, Lambda x1000, KPH x10, Oil P Kpa
CANMessage msgDTA3;         // Fuel P Kpa, Oil temp C, Volts x10, Fuel Con. L/Hr x10
CANMessage msgDTA4;         // Gear, Advance Deg x10, Injection ms x100, Fuel Con L/100km x10
CANMessage msgDTA5;         // Ana1 mV, Ana2 mV, Ana3 mV, Cam Advance x10
CANMessage msgDTA6;         // Cam Targ x10, Cam PWM x10, Crank Errors, Cam Errors
CANMessage msgLVDTFront;    // Left, Right, Steering Wheel 
CANMessage msgLVDTRear;     // Left, Right
CANMessage msgBrakes;       // Brake system preassure, Braking On/Off


int main(){    
    can.attach(&CANMsgReceive,CAN::RxIrq);      // Attach interrupt function to CAN RX
    change_screen_input.rise(&ChangeCommand);   //Attach interrupt function to rising edge of DigitalIn for changing screen.
    SetIntro();                                 // Display logo when starting display
    SetMain();                                  // First screen is main by default
    while(1){
        if(change_flag){                        // Check if screen is changed
            ChangeScreen();                         
        };
        UpdateInfo();                           // Update info for DTA values in every iteration
        switch(screen_flag){                    // Display only changes visible on current screen
            case(1):
                MainUpdate();
                break;
            case(2):
                FirstAuxUpdate();
                break;
            case(3):
                SecondAuxUpdate();
                break;
        };
    };
};