self intro microcontroller boot flow os boot flow what is interrupt what is volatile what is static keyword what is ipc mechanism(what are they) toggle bit real time scenarios for pipe message queue and sharedmemory mutex and semaphore difference what is kernel moudle what is insmod what is modprobe in uboot level what modifications u done in yocto u worked how to do menuconfig mutex and sempahore realtime scenario how u will check module loaded or not what is device tree device tree (example given) and ask their properites how u done in ur project(project realted dts)| what is sysfs how communication happing blw user space and kernel space if one module depening on other module depend(how to load) what is i2c detect (u used it) isr_handler function what happens what is /dev

# Round 1 Aptitude and C # //BITSILICA round 2 1)Spiral matrix print from top right #include int main() { int m,n; printf("Enter Array Size m x n: "); scanf("%d %d",&m,&n); int arr[m][n]; printf("Enter array Elements: \n"); for(int i = 0; i < m; i++){ for(int j =0; j < n; j++){ scanf("%d",&arr[i][j]); } } for(int i = 0; i < m; i++){ for(int j =0; j < n; j++){ printf("%d ",arr[i][j]); } printf("\n"); } printf("\n"); // spiral int top = 0; int bottom = m-1; int left = 0; int right = n-1; while(top <= bottom && left <= right){ for(int i = right; i >=left; i--){ printf("%d ",arr[top][i]); } top++; for(int i = top; i <= bottom; i++){ printf("%d ",arr[i][left]); } left++; if(top <= bottom){ for(int i = left; i <= right; i++){ printf("%d ",arr[bottom][i]); } bottom--; } if(left <= right){ for(int i = bottom; i >= top; i--){ printf("%d ",arr[i][right]); } right--; } } return 0; } 2) dynamically allocate memory for 2D array using calloc 3) How is a process created? 4) explain about memory segments? 5) Why 4 memory segments, why cant we store all in 1 segment itself? 6) do you know about LPC microcontroller? 7) How to connect SD card to an MC? 8) Real time usage of SPI 9) do you know about GDB 10) Explain about all variable qualifiers and their scope. 11) difference between malloc and calloc 12) Explain how interrupt works? 13) where is isr located? 14) what is interrupt latency?