File content as of revision 4:966ae598f73e:

#include "mbed.h"
#include "x_cube_mems.h"

// Create a DigitalOut objects for the LED
DigitalOut led(LED1);

// Create a Serial objects to communicate via USB
Serial pc(USBTX, USBRX);

// Create 2 Ticker objects for a recurring interrupts. One for blink a LED and the other one to update the sensor lectures periodicly.
Ticker blinky; 
Ticker update;
volatile float TEMPERATURE_C;
volatile float TEMPERATURE_F;
volatile float TEMPERATURE_K;
volatile float HUMIDITY;
volatile float PRESSURE;
bool measurements_update = false;
void blinky_handler(){
    led = !led;}
void sensors_handler(){
    measurements_update = true;
}

int main() {
        /* Create a sensor shield object */
    static X_CUBE_MEMS *Sensors = X_CUBE_MEMS::Instance();
    
    /* Attach a function to be called by the Ticker objects at a specific interval in seconds*/
    blinky.attach(&blinky_handler, 0.5);
    update.attach(&sensors_handler, 3);
    
    while(1) {
        if(measurements_update == true){
        /* Read the environmental sensors  */
        Sensors->hts221.GetTemperature((float *)&TEMPERATURE_C);
        Sensors->hts221.GetHumidity((float *)&HUMIDITY);
        Sensors->lps25h.GetPressure((float *)&PRESSURE);
        
TEMPERATURE_F = (TEMPERATURE_C * 1.8f) + 32.0f;     //Convert the temperature from Celsius to Fahrenheit
TEMPERATURE_K = (TEMPERATURE_C + 273.15f);          //Convert the temperature from Celsius to Kelvin
       pc.printf("Temperature:\t %.2f C / %.2f F / %.2f K\r\n", TEMPERATURE_C, TEMPERATURE_F, TEMPERATURE_K);
        pc.printf("Humidity:\t %.2f%%\r\n", HUMIDITY);
        pc.printf("Pressure:\t %.2f hPa\r\n", PRESSURE); 
        pc.printf("\r\n");          
        measurements_update = false;
        }
        __wfi();
    }
}