Programming for I/O and Storage
Xin-Xin Yang
Input and output (I/O) devices are very important components in embedded systems. I/O diversity makes I/O management in embedded systems a very complicated process. One of the basic functions of an embedded operating system is to control and manage all of the I/O devices, and to coordinate multiple processes accessing I/O devices simultaneously. The key function for device management is to control I/O implementation between the CPU and the devices. The operating system must send commands to the devices, respond to interrupts and handle exceptions from the devices. It should also provide a simple and easy-to-use interface between the devices and other parts of the system. The I/O management ...
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