嵌入式Linux驱动程序开发

设备驱动程序实际是处理和操作硬件控制器的软件，从本质上讲，是内核中具有最高特权级的、驻留内存的、可共享的底层硬件处理例程。驱动程序是内核的一部分，是操作系统内核与硬件设备的直接接口，驱动程序屏蔽了硬件的细节，完成以下功能-Embedded Linux driver development device driver is actually handling and operation of the hardware controller software, in essence, is the kernel with the highest privilege level, the presence of memory, can share the underlying hardware handling routines. Driver is part of the kernel is the operating system kernel and a direct interface to hardware devices, drivers shield the hardware details, complete the following features ....