This program is used for blinking leds with different frequencies. A DSP processor is connected to the computed system and CCS studio interface software should be available. Four LEDs are available on the processor kit. This program makes the 1st LED

产生占空比变化的脉冲信号。它产生的脉宽调制信号用于电机变速控制。来自马忠梅等编著的《单片机的C语言应用程序设计（第4版）》，北航出版。-Produce changes in the pulse duty cycle. It generates PWM signals for motor speed control. From Ma Zhongmei eds " MCU C language application design (4th edition)" , Beihang p