Device drivers are developed illustrating the use of general-purpose and special-purpose digital I/O interfaces, analog interfaces, serial interfaces and real-time I/O processing. The hardware side of each interface is described and electrical specifications and related issues are considered. The first part of the book provides the programming skills necessary to implement the software in this part.Figure 1.8: Thevenin equivalent circuit models for VOL and VOH. ... 1.3.3 SWITCH INPUT INTERFACE One of the simplest input sources is the mechanical switch input. ... The schematic symbols for common switches are shown in Figure 1.9.
|Title||:||Embedded Systems Interfacing for Engineers Using the Freescale HCS08 Microcontroller|
|Author||:||Douglas H. Summerville|
|Publisher||:||Morgan & Claypool Publishers - 2009|