File content as of revision 6:c4c88077923c:

/* Includes */
#include <iostream>
#include <stdlib.h> 
#include <algorithm>
using namespace std;
#include "mbed.h"
#include "x_nucleo_iks01a1.h"
#include <ctime>

//Skilgreiningar fyrir takka
InterruptIn button1(USER_BUTTON);
volatile bool button1_pressed = false; // Used in the main loop
volatile bool button1_enabled = true; // Used for debouncing
Timeout button1_timeout; // Used for debouncing
DigitalOut led1(LED1);

/* Instantiate the expansion board */
static X_NUCLEO_IKS01A1 *mems_expansion_board = X_NUCLEO_IKS01A1::Instance(D14, D15);

/* Retrieve the composing elements of the expansion board */
static GyroSensor *gyroscope = mems_expansion_board->GetGyroscope();
static MotionSensor *accelerometer = mems_expansion_board->GetAccelerometer();
static MagneticSensor *magnetometer = mems_expansion_board->magnetometer;
static HumiditySensor *humidity_sensor = mems_expansion_board->ht_sensor;
static PressureSensor *pressure_sensor = mems_expansion_board->pt_sensor;
static TempSensor *temp_sensor1 = mems_expansion_board->ht_sensor;
static TempSensor *temp_sensor2 = mems_expansion_board->pt_sensor;

/* Helper function for printing floats & doubles */
static char *printDouble(char* str, double v, int decimalDigits=2)
{
  int i = 1;
  int intPart, fractPart;
  int len;
  char *ptr;

  /* prepare decimal digits multiplicator */
  for (;decimalDigits!=0; i*=10, decimalDigits--);

  /* calculate integer & fractinal parts */
  intPart = (int)v;
  fractPart = (int)((v-(double)(int)v)*i);

  /* fill in integer part */
  sprintf(str, "%i.", intPart);

  /* prepare fill in of fractional part */
  len = strlen(str);
  ptr = &str[len];

  /* fill in leading fractional zeros */
  for (i/=10;i>1; i/=10, ptr++) {
    if(fractPart >= i) break;
    *ptr = '0';
  }

  /* fill in (rest of) fractional part */
  sprintf(ptr, "%i", fractPart);

  return str;
}






//lidur 3 og 5
/*
if (userInput == 1) {
        printf("\r\n");

        temp_sensor1->get_temperature(&value1);
        humidity_sensor->get_humidity(&value2);
        printf("HTS221: [temp] %7s°C,   [hum] %s%%\r\n", printDouble(buffer1, value1), printDouble(buffer2, value2));
    
        temp_sensor2->get_fahrenheit(&value1);
        pressure_sensor->get_pressure(&value2);
        printf("LPS25H: [temp] %7s°F, [press] %smbar\r\n", printDouble(buffer1, value1), printDouble(buffer2, value2));
    } else if (userInput == 2) {
        printf("---\r\n");

        magnetometer->get_m_axes(axes);
        printf("LIS3MDL [mag/mgauss]:  %7ld, %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);

        accelerometer->get_x_axes(axes);
        printf("LSM6DS0 [acc/mg]:      %7ld, %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);

        gyroscope->get_g_axes(axes);
        printf("LSM6DS0 [gyro/mdps]:   %7ld, %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);
    }
*/

// Enables button when bouncing is over
void button1_enabled_cb(void)
{
    button1_enabled = true;
}

// ISR handling button pressed event
void button1_onpressed_cb(void)
{
    if (button1_enabled) { // Disabled while the button is bouncing
        button1_enabled = false;
        button1_pressed = true; // To be read by the main loop
        button1_timeout.attach(callback(button1_enabled_cb), 0.3); // Debounce time 300 ms
    }
}

void tilfelli1() {
    printf("\r\n");
    printf("Tilfelli 1 valið: \r\n");
    float value1, value2;
    char buffer1[32], buffer2[32];
    temp_sensor1->get_temperature(&value1);
    humidity_sensor->get_humidity(&value2);
    printf(" Hitastig: %7s°C\n Rakastig: %s%%\r\n Loftþrýstingur: %smbar\r\n", printDouble(buffer1, value1), printDouble(buffer2, value2), printDouble(buffer2, value2));  
    printf("\n");
}


void tilfelli2() {
    printf("\r\n");
    printf("Tilfelli 2 valið: \r\n");
    char buffer1[32], buffer2[32];
    int32_t axes[3];
    magnetometer->get_m_axes(axes);
    printf(" Segulstefnur:  %7ld, %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);

    accelerometer->get_x_axes(axes);
    printf(" Hröðun:        %7ld  %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);

    gyroscope->get_g_axes(axes);
    printf(" Hornhröðun:    %7ld, %7ld, %7ld\r\n", axes[0], axes[1], axes[2]);
    printf("\n");
}

void tilfelli3() {
    printf("\r\n");
    printf("Tilfelli 3 valið: \r\n");
    printf("Ýttu 1 sinni á takkann til að fá stöðu brettisins einu sinni. \r\n");
    printf("Ýttu 2 sinnum á takkann til að athuga hvort brettið sé upprétt einu sinni. \r\n");
    printf("Ýttu 3 sinnum á takkann til að fá stöðu brettisins í rauntíma. \r\n");
    printf("Ýttu 4 sinnum á takkann til að fara til baka. \r\n");
    //button1.mode(PullUp); // Activate pull-up
    button1.fall(callback(button1_onpressed_cb)); // Attach ISR to handle button press event

    int idx = 0; // Just for printf below

    while(1) {   
        idx = 0;
        if (button1_pressed) { // Set when button is pressed
            button1_pressed = false;
            clock_t time = clock();
            idx++;
            while ((clock() - time) / CLOCKS_PER_SEC < 3) {
                if (button1_pressed) {
                    button1_pressed = false;
                    idx++;    
                }
            } 
        }
        
        if (idx != 0) {
            printf("\r\n");
            printf("Þrýst á takkann %7ld sinnum \r\n", idx);
        }
        
        if (idx == 1) {
            char buffer1[32], buffer2[32];
            int32_t axes[3];
            accelerometer->get_x_axes(axes);
            int max_1 = max(abs(axes[0]), abs(axes[1]));
            max_1 = max(max_1, abs(axes[2]));
            
            if (max_1 == abs(axes[0])) {
                if (max_1 == axes[0]) {
                    printf("RIGHT \n");
                } else {
                    printf("LEFT \n");
                }
            }
            else if (max_1 == abs(axes[1])) {
                if (max_1 == axes[1]) {
                    printf("TOP \n");
                } else {
                    printf("BOTTOM \n");
                }
            } 
            else if (max_1 == abs(axes[2])) {
                if (max_1 == axes[2]) {
                    printf("UP \n");
                } else {
                    printf("DOWN \n");
                }
            }  
        } 
        else if (idx == 2) {
            char buffer1[32], buffer2[32];
            int32_t axes[3];
            accelerometer->get_x_axes(axes);
            int max_1 = max(abs(axes[0]), abs(axes[1]));
            max_1 = max(max_1, abs(axes[2]));
            
            if (max_1 == axes[2]) {
                clock_t time = clock();
                while ((clock() - time) / CLOCKS_PER_SEC < 2) {
                    led1 = true;
                }
            } else {
                clock_t time = clock();
                while ((clock() - time) / CLOCKS_PER_SEC < 2) {
                    led1 = !led1;
                }
            }
            led1 = false;
        }
        else if (idx == 3) {
            while(1){
                idx = 0;
                if (button1_pressed) { // Set when button is pressed
                    button1_pressed = false;
                    clock_t time = clock();
                    idx++;
                    while ((clock() - time) / CLOCKS_PER_SEC < 3) {
                        if (button1_pressed) {
                            button1_pressed = false;
                            idx++;    
                        }
                    } 
                }
        
                if (idx == 3) {
                    led1 = 0;
                    printf("Ýttu 1 sinni á takkann til að fá stöðu brettisins einu sinni. \r\n");
                    printf("Ýttu 2 sinnum á takkann til að athuga hvort brettið sé upprétt einu sinni. \r\n");
                    printf("Ýttu 3 sinnum á takkann til að fá stöðu brettisins í rauntíma. \r\n");
                    printf("Ýttu 4 sinnum á takkann til að fara til baka. \r\n");
                    break;
                }
                
                char buffer1[32], buffer2[32];
                int32_t axes[3];
                accelerometer->get_x_axes(axes);
                int max_1 = max(abs(axes[0]), abs(axes[1]));
                max_1 = max(max_1, abs(axes[2]));
        
                if (max_1 == axes[2]) {
                    led1 = 1;
                } else {
                    led1 = !led1;
                    wait(0.2);
                }
            }
        }
        else if (idx > 3) {
            break;
        }
    }
}



/* Simple main function */
int main() {
  uint8_t id;
  float value1, value2;
  char buffer1[32], buffer2[32];
  int32_t axes[3];
  
  printf("\r\n--- Starting new run ---\r\n");

  humidity_sensor->read_id(&id);
  printf("HTS221  humidity & temperature    = 0x%X\r\n", id);
  pressure_sensor->read_id(&id);
  printf("LPS25H  pressure & temperature    = 0x%X\r\n", id);
  magnetometer->read_id(&id);
  printf("LIS3MDL magnetometer              = 0x%X\r\n", id);
  gyroscope->read_id(&id);
  printf("LSM6DS0 accelerometer & gyroscope = 0x%X\r\n", id);
  
  wait(1);
 
  while(1) {
    int userInput;
    cout << "Veldu tilfelli 1-3: " << endl;
    cin >> userInput;
    switch(userInput) {
        case 1: tilfelli1();
        break;
        case 2: tilfelli2();
        break;
        case 3: tilfelli3();
        break;
        default: break;    
    }
    
  }
}