PWM占空比调节,控制小灯的渐明渐暗,程序简单明了-PWM duty cycle regulation, the control of small lights out gradually dimming, straightforward procedure

PWM控制LED的亮度 proteus仿真 C51程序-PWM control of LED brightness proteus simulation procedure C51

PWM控制LED灯渐亮渐灭.利用定时器控制产生占空比可变的 PWM 波.按K1，PWM值增加，则占空比减小,LED 灯渐暗。按K2，PWM值减小，则占空比增加,LED 灯渐亮。当PWM值增加到最大值或减小到最小值时，蜂鸣器将报警-PWM control of LED lights out gradually becoming light. Timer to control the use of variable duty cycle PWM generated waves. By K1, PWM

基于飞思卡尔中pwm模块实现led的亮度控制，该代码实现了led的7个等级的亮度闪烁控制功能-Based on Freescale pwm module led brightness control, the code has led the seven levels of brightness flicker control functions