基于ARM9的Linux多线程应用程序。生产者写入缓冲区和消费者从缓冲区读数的具体流程，生产者首先获得互斥锁，并且判断写指针+1后是否等于读指针，如果相等则进入等待状态，等候条件变量notfull；如果不等则向缓冲区中写入一个整数，并且设置条件变量为notempty，最后释放互斥锁。消费者线程与生产者线程类似。-ARM9-Linux-based multi-threaded applications. Producers and consumers into a buffer from the

arm—linux线程程序，适用于arm-linux线程编程的学习。-arm-linux thread programming for arm-linux thread programming learning.

在arm下进行视频实时采集和显示，使用V4L2与Qtimer结合的QT程序。-Under the arm real-time video capture and display, combined with V4L2 and Qtimer QT program.

RT-Thread source code(RT-Thread is an open source IoT operating system from China, which has strong scalability: from a tiny kernel running on a tiny core, for example ARM Cortex-M0, or Cortex-M3/4/7, to a rich feature system running on MIPS32, ARM C