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2,357 firmware development engineer interview questions shared by candidates

Programms to Write: * Find what's wrong with this function? void copydata(uint8_t *datato, uint8_t *datafrom, int size) { uint8_t *CurrentAddress = datafrom; uint8_t *StopAddress = datafrom + size; for(;CurrentAddress <= StopAddress;CurrentAddress++) *CurrentAddress = *datafrom++; } * Write algorithm to find missing element in array. For example int array[5] = {1, 2, 0, 3, 4}; this array should contain # from 1 to 5. # 5 is missing. * find a element in array size of n using binary search method. * Write a small program that add element into linked list at beginning of the list, and back of the list? * Swap the bit order in a byte (example bit 7 would goto bit 0, bit 0 would goto bit 1) * Write a small test program that would test the read/write memory? What good value to write if you want to test if there two data lines tight together?
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Firmware Engineer

Interviewed at Qualcomm

3.8★
May 7, 2011

Programms to Write: * Find what's wrong with this function? void copydata(uint8_t *datato, uint8_t *datafrom, int size) { uint8_t *CurrentAddress = datafrom; uint8_t *StopAddress = datafrom + size; for(;CurrentAddress <= StopAddress;CurrentAddress++) *CurrentAddress = *datafrom++; } * Write algorithm to find missing element in array. For example int array[5] = {1, 2, 0, 3, 4}; this array should contain # from 1 to 5. # 5 is missing. * find a element in array size of n using binary search method. * Write a small program that add element into linked list at beginning of the list, and back of the list? * Swap the bit order in a byte (example bit 7 would goto bit 0, bit 0 would goto bit 1) * Write a small test program that would test the read/write memory? What good value to write if you want to test if there two data lines tight together?

One guy asked me to write C code on a whiteboard, another asked me more about what I liked to do for fun, and the others were more what I was expecting: why do you want this job, how are you qualified, future plans etc. Overall a much more technical interview than I was expecting.
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Firmware Engineering Intern

Interviewed at Zebra Technologies

3.6★
May 12, 2015

One guy asked me to write C code on a whiteboard, another asked me more about what I liked to do for fun, and the others were more what I was expecting: why do you want this job, how are you qualified, future plans etc. Overall a much more technical interview than I was expecting.

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