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Plexus Senior Embedded Software Engineer Interview Questions & Reviews

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Senior Embedded Software Engineer Interview

Senior Embedded Software Engineer

I applied online and the process took 1 week - interviewed at Plexus.

Interview Details – Applied from India through linkedin for a Malaysia based position. Initially they ask you to fill up a skill set form wherein you list the competencies for the mentioned platforms/tools/programming languages etc. Based on the information they decide to proceed. Got a confirmation for technical skype call with functional manager in Malaysia. The call lasted for 1.5 hrs with majority of the questions based on embedded C. Not very difficult. Finally one design question on describing various modules of vending machine from embedded developer point of view. The call went fine. Finally manager asked about the salary expectation. I had done a little research on the salary part prior to the interview and based on the information available it seemed Malaysia did not offer much significant advantage in terms of compensation. I mentioned 5 times the monthly living cost which was probably too much to ask for.

HR did not bother to give any feedback proactively as well as not even after asking for it.

Interview Question – int x=20,y=35;
x=y++ + x++;
y= ++y + ++x;
printf("%d%d\n",x,y);

char *ptr = " Plexus Corp";
char *temp;
ptr+=2;
printf("%s\n",ptr);
*temp = *ptr++;
printf("%s\n",ptr);

What is the final value of port1?
unsigned short port1 = 0x1212FF22;
port1 |= 0x11;
port1 &= ~0x2200;

void Q3()
{
    int x=5, y=10;
    swap (x,y);
    printf("%d %d\n",x,y);
    swap2(x,y);
    printf("%d %d\n",x,y);
}

explain

const int a;
int const a;
const int *a;
int * const a;
int const * a const;

Please comment on the following interrupt service routine code:
__interrupt double compute_area(double radius)
{
    double area = PI * radius * radius;
    printf("\nArea = %f", area);
    return area;
}

#define SQR( a ) a*a
printf("Answer is %d\n",SQR(6+1));

Review his function and identify any issues or problems with this function
 
char* GetNewStringAsUppercase(char* string1)
{
    int i=0;
    char string2[20];
    while (i<20 && *(string1+i) != '\0')
    {
        string2[i] = toupper (*(string1+i));
        ++i;
    }
    string2[i] = '\0';
    return string2;
}
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