郑州-杰瑞鼠 / STM32定时器的PWM输出配置(标准库）

kina2001

于 2018-01-10 18:45:14 发布

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本文链接：https://blog.youkuaiyun.com/kina2001/article/details/79027088

void TIM3_PWMMode_Config(void)    
  {    
     TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;    
     TIM_OCInitTypeDef  TIM_OCInitStructure;    
    
     /* PWM信号电平跳变值 */   
     u16 CCR1_Val = 500; //占空比           
         
    
 /* -----------------------------------------------------------------------   
     TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles:   
     TIM3CLK = 36 MHz, Prescaler = 0x0, TIM3 counter clock = 36 MHz   
     TIM3 ARR Register = 999 => TIM3 Frequency = TIM3 counter clock/(ARR + 1)   
     TIM3 Frequency = 36 KHz.   
     TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50%   
     TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR)* 100 = 37.5%   
     TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR)* 100 = 25%   
     TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR)* 100 = 12.5%   
   ----------------------------------------------------------------------- */   
    
   /* Time base config