About: hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursor...
学会对文件的记录锁定，及解锁。#include <stdio.h> #include <unistd.h> #include <fcntl.h> int main() { int fd int i struct { char nam...
If you have programming experience and a familiarity with C--the dominant language in embedded systems--Programming Embedded Systems, Second Edition i...
键盘过滤驱动源码，本例子是过滤了Caps Lock键,修改成了Ctrl键....
SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限，将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适的卡体，不管是什么卡，都会使该位被设置； SD_CARD_WRITE_PROTECT 当卡体的写保护开关被 LOCK 时，则该位被设置； ...
