File content as of revision 1:026d80a2f7a9:

#include "mbed.h"
#include "N5110.h"
#include "BMP180.h"

//    VCC,SCE,RST,D/C,MOSI,SCLK,LED
N5110 lcd(p7,p8,p9,p10,p11,p13,p26);
// Can also power (VCC) directly from VOUT (3.3 V) -
// Can give better performance due to current limitation from GPIO pin

Ticker timer ; //create a ticker object to read the data from the sensor
Timeout timeOut ; 
BMP180 bmp180(p28,p27);
Serial serial(USBTX,USBRX);
AnalogIn POT(p20);

int timerFlag= 0;
int timeOutFlag = 0 ;
int temperature ;
float pressure;


void screen()
{
    lcd.printString("Weather Logger",0,2);
    lcd.printString("3000",32,3);
    lcd.printString("Alex Raper",15,5);
    lcd.refresh();
}

void menu()
{
    lcd.clear();
    if (POT>(1.0/2.0)) {
        lcd.printString("Temperature",2,2);
        lcd.printString(">",76,2);
        lcd.printString("Graph",0,5);
        lcd.printString("Current",42,5);

    } else {
        lcd.printString("Pressure",18,2);
        lcd.printString("<",2,2);
        lcd.printString("Graph",0,5);
        lcd.printString("Current",42,5);

    }
}

void timerExpired(){
    timerFlag = 1 ;
}

void timeOutStopped(){
    
    timeOutFlag = 1;
    }

void recieveData()
{

    Measurement measurement;  // measurement structure declared in BMP180 class

    // read values (T in Celsius and P in mb) and print over serial port
    measurement = bmp180.readValues();
    serial.printf("T = %.2f C P = %.2f mb\n",measurement.temperature,measurement.pressure);

    temperature = measurement.temperature ;
    pressure = measurement.pressure ;

}


void displayData()
{

    char buffer[14];  // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
    // so can display a string of a maximum 14 characters in length
    // or create formatted strings - ensure they aren't more than 14 characters long
    int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer
    // it is important the format specifier ensures the length will fit in the buffer
    if (length <= 14)  // if string will fit on display
        lcd.printString(buffer,0,1);           // display on screen
    length = sprintf(buffer,"P = %.2f mb",pressure);
    if (length <= 14)
        lcd.printString(buffer,0,2);

}





int main()
{
    // first need to initialise display
    lcd.init();
    // initiliase barometer
    bmp180.init();
    timer.attach (&timerExpired , 1.0);
    timeOut.attach (&timeOutStopped , 2.0);
    screen();

    while(1) {
        if (timeOutFlag ==1 ){
            
            menu();
            
            
            
//        if (timerFlag ==1){
//            timerFlag = 0;
//        lcd.clear();
//        recieveData();
//        displayData();
//        //  menu();
//        }
    }
    }
}