[技术问答] 这个PWM的库函数是不是频率不是实际频率

/**

 * [url=home.php?mod=space&uid=247401]@brief[/url] This function config PWM generator 

 * @param[in] u8ChannelNum PWM channel number. Valid values are between 0~5

 * @param[in] u8OPMode PWM run mode select from Independent, Complementary or Synchronized mode.

 * @param[in] u8PwmType select Edge-Aligned Type or Center-Aligned Type

 * @param[in] u32PWM0Frequency Target generator frequency, note the actually PWM period is 16bit value. from 0x0000 ~ 0xFFFF

 * @param[in] u16DutyCycle Target generator duty cycle percentage. Valid range are between 0 ~ 100. 10 means 10%, 20 means 20%...

 * [url=home.php?mod=space&uid=266161]@return[/url] none

 * [url=home.php?mod=space&uid=536309]@NOTE[/url]  none       

 * [url=home.php?mod=space&uid=389923]@example[/url] PWM0_ConfigOutputChannel(0,Independent,EdgeAligned,0x6FF,10);

  */

void PWM0_ConfigOutputChannel(unsigned char u8PWM0ChannelNum,

                              unsigned char u8PWM0OPMode,

                              unsigned char u8PWM0PwmType,

                              unsigned long u32PWM0Frequency,

                              unsigned int u16PWM0DutyCycle)

{

  SFRS = 0x01;

  switch (u8PWM0OPMode)

  {

      case Independent:    PWM0CON1&=0x3F;break;

      case Complementary:  PWM0CON1&=0x3F;PWM0CON1|=0x40;break;

      case Synchronous:    PWM0CON1&=0x3F;PWM0CON1|=0x80;break;

  }

  switch (u8PWM0PwmType)

  {

      case EdgeAligned:    PWM0CON1&=0xEF;break;

      case CenterAligned:  PWM0CON1|=0x10;break;

  }

  switch (u8PWM0ChannelNum)

  {

      case 0:  PWM0C1H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C0L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

      case 1:  PWM0C1H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C1L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

      case 2:  PWM0C2H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C2L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

      case 3:  PWM0C3H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C3L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

      case 4:  PWM0C4H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C4L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

      case 5:  PWM0C5H=(u32PWM0Frequency*u16PWM0DutyCycle/100)>>8;PWM0C5L=(u32PWM0Frequency*u16PWM0DutyCycle/100);break;

  }

  PWM0PH = u32PWM0Frequency>>8;

  PWM0PL = u32PWM0Frequency;

}