ARM下加一个硬件驱动比较复杂，不象x86下比较标准，需要对bsp包做些改动。can卡驱动的改动主要在中断方面，因为它使用的是共享中断。-ARM introduction of a more complex hardware-driven, unlike under the x86 standard for comparison. bsp packets need to do alterations. The card can drive major changes in the suspens