File content as of revision 5:18feff1607c9:

#include "mbed.h"
#define period 1/5000
#define sizeVector 100
#define Constant (0.000001661707484)
//USER_BUTTON o PC_13

InterruptIn button(PC_13);

uint32_t vA[sizeVector];
uint32_t vB[sizeVector];

AnalogIn valors(A0);

int counter=0;
int flag=0;
int whatVector=0;
uint64_t sum_values=0;
float RMS_value=0;
float Vpp_value=0;
float Max_value=0;
float Min_value=1000;
int state=0;

Ticker sample;
Ticker visualize;

void fsample() //??
{
    if (whatVector) {
        vB[counter]=(valors.read_u16()+valors.read_u16()+valors.read_u16()+valors.read_u16())/4; 
    } 
    else {
        vA[counter]=(valors.read_u16()+valors.read_u16()+valors.read_u16()+valors.read_u16())/4;
    }
    counter++;
    if (counter==100) {
        counter=1;
        flag=1;
        whatVector=!whatVector;  //??
    }
}
void change()   //??
{
    state=!state;
     }
void visualiza()
{
    if(state){
        printf("RMS value is =%f",RMS_value);
    }
    else {
        printf("Vpp value is =%f",Vpp_value);
    }
}

int main()
{
    uint32_t temp;
    sample.attach(&fsample,period); //& para llamar a la función
    visualize.attach(&visualiza,1);
    button.rise(&change);
    while(1) {
        if (flag) {
            flag=0;
            sum_values=0;
            if(whatVector) {
                
                for(int n=0; n<99; n++) {
                    temp=vA[n];
                    sum_values=sum_values+temp;

                    if(Max_value<temp) {
                        Max_value=temp;
                    }
                    if(Min_value>temp) {
                        Min_value=temp;
                    }
                }
            }
                else {

                    for(int n=0; n<99; n++) {
                        temp=vB[n];
                        sum_values=sum_values+temp;

                        if(Max_value<temp) {
                            Max_value=temp;
                        }
                        if(Min_value>temp) {
                            Min_value=temp;
                        }
                    }
                }
            RMS_value=sqrt(Constant*(float)sum_values);
            Vpp_value=Max_value-Min_value;
            
        }
    }
}