Schweitzer Engineering Laboratories Embedded Systems/FPGA Engineer interview questions

Called me 3 days later after I submitted. And arranged an interview today. And did a telephone interview. The HR is really really nice. The phone interview lasts for an hour, first behavioral, and then coding. A small coding in fpga, and a big one in c string. The questions is pretty simple, but it's been really really long since I programmed in C. So i exceeded the time required which is 30 minutes.