飞思卡尔的综合实验，包括芯片的ad，SCI,PWM和液晶显示，有看门狗复位功能-Freescale s comprehensive experiment, including chip ad, SCI, PWM and LCD, there are watchdog reset function

飞思卡尔的芯片编程，基于其内置的PWM发生器，通过调节其占空比，达到输出音乐效果-Freescale s chip programming, based on its built-in PWM generator, by adjusting the duty cycle reaches the output sound effects

飞思卡尔的PWM代码，通过改变PWM输出的占空比，可以做出特定频率的方波-Freescale s PWM code by changing the duty cycle of the PWM output, you can make a specific frequency square wave