mini2440的pwm测试程序，程序没有大的变动，我只是把注释详细了，也有我对部分程序的理解-The mini2440 PWM test program, a program has the change, I just put the annotation detailed and also have I to the understanding of the part program

测试代码运行时间，很不错的程序测试类。已封装好，有注释。-Run-time test code, it is a good type of program testing

测试代码运行时间，很不错的程序测试类。已封装好，有注释。-Run-time test code, it is a good type of program testing