The only real change is that we now request an interrupt for the camera device interruptline.
唯一的实质性变化就是我们为摄像头设备中断行请求一个中断。
2
Rather than a dedicated interruptline, several lines can be Shared to provide more possible interrupts.
而非一根奉献中断线,几根线能被分享提供更可能的中断。
3
To see what's going on in main() we can set a breakpoint at a particular line or on a function in the program code so gdb will interrupt execution when it is reached.