#include "pwm.h"
  

/**
  * @param  htim TIM handle
  * @param  Channel TIM Channels to be enabled
  *          This parameter can be one of the following values:
  *            @arg TIM_CHANNEL_1: TIM Channel 1 selected
  *            @arg TIM_CHANNEL_2: TIM Channel 2 selected
  *            @arg TIM_CHANNEL_3: TIM Channel 3 selected
  *            @arg TIM_CHANNEL_4: TIM Channel 4 selected
  * @param  arr specifies the Counter register new value.
  * @param  crr specifies the Capture Compare register new value.
  */
void Tim_PWM(TIM_HandleTypeDef *htim,uint32_t channel,uint32_t arr,uint32_t crr)
{
    uint32_t ARR,Channel,CRR=0;
    switch(channel) {
    case 1:
    Channel=TIM_CHANNEL_1;
    break;
    case 2:
    Channel=TIM_CHANNEL_2;
    break;
    case 3:
    Channel=TIM_CHANNEL_3;
    break;
    case 4:
    Channel=TIM_CHANNEL_4;
    break;
    default:
    Channel=TIM_CHANNEL_ALL;
    }
//    if(arr==NULL)
//    {
//        ARR=100-1;
//    }else ARR=arr-1;
    if(crr>99)
    {
        CRR=99;
    }else if (crr<1)
    {
        CRR=0;
    }else CRR=crr;
    
    
    //__HAL_TIM_SET_AUTORELOAD(htim, ARR);   /*设置定时器自动加载值，修改频率*/   
    __HAL_TIM_SetCompare(htim,Channel,CRR); /*设置占空比*/
    
}