Linux 2.4.18 s3c2440 led driver 使用dev-C++撰寫，需要linux 2.4.18 kernel include，編譯完成後產生led module。 insmod main.o //安裝模組 mknod /dev/leds c 221 0 使用方法： int main(int argc, char *argv[]) { int testdev //led test... testdev = op

利用mmap在frambuffer中画点，划线，图形，ioctl功能实现-Using mmap in frambuffer in drawing point dash, graphics, ioctl function realization

linux下简单的设备驱动程序，实现了读写、定位文件指针、ioctl清零以及简单的读写控制。-the simple linux device driver, to achieve the reading and writing, positioning the file pointer, ioctl clear and simple to read and write control.