File content as of revision 0:d78ac68077c6:

#include "mbed.h"
#include "N5110.h"
#include "BMP180.h"
#include "PowerControl/PowerControl.h"
#include "PowerControl/EthernetPowerControl.h"

BMP180 bmp180(p28,p27);   // SDA, SCL
N5110 lcd(p7,p8,p9,p10,p11,p13,p26);
Serial serial(USBTX,USBRX);

Ticker timer; //Create ticker object for temperature and pressure readings
Ticker timer1; //Create ticker object for real time clock



void serialISR(); // ISR that is called when serial data is received
void setTime(); // function to set the UNIX time

int setTimeFlag = 0; // flag for real time clock ISR
int timerFlag = 0; // Flag for tempesrature pressure reading ISR
int length;

char bufferTime[14]; // buffer to store time
char bufferDate[14]; //buffer to store date
char bufferT[14];
char bufferP[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





void timer1Expired()
{
// set flagb
    setTimeFlag = 1;
}




void setTime() // sets the time every second
{

    if (setTimeFlag) {
        setTimeFlag=0;
        time_t seconds = time(NULL); // get current time
// format time into a string (time and date)
        strftime(bufferTime, 14 , "%X", localtime(&seconds));
        strftime(bufferDate, 14 , "%d/%m/%y", localtime(&seconds));
    }
}




void timerExpired()
{
    timerFlag=1;
}



void readData()
{

    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);

    int temperature = measurement.temperature;
    length = sprintf(bufferT,"T = %0.1d C",temperature); // print formatted data to buffer
    // it is important the format specifier ensures the length will fit in the buffer

    float pressure = measurement.pressure;  // same idea with floats
    length = sprintf(bufferP,"P = %.2f mb",pressure);


}


void displayData()
{
    if (length <= 14) { // if string will fit on display
        lcd.printString(bufferT,0,1);           // display on screen
        lcd.printString(bufferP,0,2);
        lcd.printString(bufferTime,0,3);
        lcd.printString(bufferDate,0,4);
    }
}


void updateData()
{
    if (timerFlag) {
        timerFlag=0;
        readData();
        displayData();
    }
    Sleep();
}


int main()
{

    // initiliase barometer
    bmp180.init();
    lcd.init();
    timer.attach(&timerExpired,1.0);
    timer1.attach(&timer1Expired,1.0);
    set_time(0); // initialise time to 1st January 1970///// This is where we should set our time

    while(1) {
        setTime();
        updateData();
    }
}