嵌入式linux按键驱动程序及相关的测试程序，通过定时器定时扫描GPIO电平的高低以判定按键是否按键，通过延时去抖-Embedded linux key drivers and test procedures, by the level of timer scheduled scans the GPIO to determine whether a key button debounce with delay

SANE(Scanner Access Now Easy)是用于开发光栅扫描设备驱动和应用程序的一个标准应用程序接口(API)。有了它，你的扫描仪驱动和应用程序的编写更容易。-SANE (Scanner Access Now Easy) for the development of raster scanning device drivers and application of a standard application program interface (API). With it, y

简单的按键linux驱动程序，里面有两种模式，一种是扫描模式，一种是中断模式。中断模式是按键驱动led-Simple key linux driver, there are two modes, a scan mode, one is the interrupt mode. The interrupt mode key driver led

嵌入式linux下使用usb扫描枪，读取数据程序- Use usb scanner embedded linux, read the data program