STC12C5A60S2单片机 PWM调试

时间：2015-07-28 12:57:59 阅读：113 评论：0 收藏：0 [点我收藏+]

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#include <REG52.H>
#include <intrins.h>
#define U8 unsigned char
#define U16 unsigned int

/********************************************************************
                              ÑÓÊ±º¯Êý
*********************************************************************/
void DelayMs(U8 ms) //ÔÚ11.0592M¾§ÕñÏÂ£¬stc10fÏµÁÐ£¨µ¥ÖÜÆÚÖ¸Áî£©µÄms¼¶ÑÓÊ±
{      
U16 i;
while(ms--)
{
   for(i = 0; i < 850; i++);
}
}

/********************************************************************
                             ³õÊ¼»¯¶¨Òåº¯Êý
*********************************************************************/

sfr CCON     = 0xD8; //PCA¿ØÖÆ¼Ä´æÆ÷
sfr CMOD     = 0xD9; //PCAÄ£Ê½¼Ä´æÆ÷
sfr CCAPM0   = 0xDA; //PCAÄ£¿é0Ä£Ê½¼Ä´æÆ÷ //Ä£¿é0¶ÔÓ¦P1.3/CEX0/PCA0/PWM0(STC12C5A60S2ÏµÁÐ)   
sfr CCAPM1   = 0xDB; //PCAÄ£¿é1Ä£Ê½¼Ä´æÆ÷ //Ä£¿é1¶ÔÓ¦P1.4/CEX1/PCA1/PWM1(STC12C5A60S2ÏµÁÐ)
sfr CL       = 0xE9; //PCA ¶¨Ê±¼Ä´æÆ÷ µÍÎ»
sfr CH       = 0xF9; //PCA ¶¨Ê±¼Ä´æÆ÷ ¸ßÎ»
sfr CCAP0L   = 0xEA; //PCAÄ£¿é0µÄ ²¶»ñ¼Ä´æÆ÷ µÍÎ»
sfr CCAP0H   = 0xFA; //PCAÄ£¿é0µÄ ²¶»ñ¼Ä´æÆ÷ ¸ßÎ»
sfr CCAP1L   = 0xEB; //PCAÄ£¿é1µÄ ²¶»ñ¼Ä´æÆ÷ µÍÎ»
sfr CCAP1H   = 0xFB; //PCAÄ£¿é1µÄ ²¶»ñ¼Ä´æÆ÷ ¸ßÎ»
sfr PCA_PWM0 = 0xF2; //PCA PWM Ä£Ê½¸¨Öú¼Ä´æÆ÷0
sfr PCA_PWM1 = 0xF3; //PCA PWM Ä£Ê½¸¨Öú¼Ä´æÆ÷1
sbit CF   = 0xDF;    //PCA¼ÆÊýÒç³ö±êÖ¾Î»
sbit CR   = 0xDE;    //PCA¼ÆÊýÆ÷ ÔËÐÐ¿ØÖÆÎ»
sbit CCF1 = 0xD9;    //PCAÄ£¿é1ÖÐ¶Ï±êÖ¾
sbit CCF0 = 0xD8;    //PCAÄ£¿é0ÖÐ¶Ï±êÖ¾

//* CCAPOH = CCAPOL = 0XC0; //Ä£¿é0Êä³ö Õ¼¿ÕÒòÊýÎª25%
//* CCAPOH = CCAPOL = 0X80; //Ä£¿é0Êä³ö Õ¼¿ÕÒòÊýÎª50%
//* CCAPOH = CCAPOL = 0X40; //Ä£¿é0Êä³ö Õ¼¿ÕÒòÊýÎª75%
/********************************************************************
                              PWMÊ±ÖÓº¯Êý
*********************************************************************/
void PWM_clock(U8 clock)
{ 
CMOD |= (clock<<1);
CL = 0x00;
CH = 0x00;
}
 /********************************************************************
                              PWMÊä³öº¯Êýº¯Êý
*********************************************************************/
void PWM_start(U8 module,U8 mode) 
{

/********************ÉèÖÃPWMÐÅºÅÊä³öÖµ*******************************/
CCAP0L = 0Xc0;
CCAP0H = 0Xc0;   //Ä£¿é0³õÊ¼Êä³ö Õ¼¿ÕÒòÊýÎª25%
CCAP1L = 0Xc0;
CCAP1H = 0Xc0;   //Ä£¿é1³õÊ¼Êä³ö Õ¼¿ÕÒòÊýÎª25%

if(module==0)
   {
    switch(mode)
     { 
   case 0: CCAPM0 = 0X42;break; //Ä£¿é0ÉèÖÃÎª8Î»PWMÊä³ö£¬ÎÞÖÐ¶Ï
   case 1: CCAPM0 = 0X53;break; //Ä£¿é0ÉèÖÃÎª8Î»PWMÊä³ö£¬ÏÂ½µÑØ²úÉúÖÐ¶Ï
   case 2: CCAPM0 = 0X63;break; //Ä£¿é0ÉèÖÃÎª8Î»PWMÊä³ö£¬ÉÏÉýÑØ²úÉúÖÐ¶Ï
   case 3: CCAPM0 = 0X73;break; //Ä£¿é0ÉèÖÃÎª8Î»PWMÊä³ö£¬Ìø±äÑØ²úÉúÖÐ¶Ï
   default: break;
   }
}
else
    if(module==1)
     {
      switch(mode)
       { 
   case 0: CCAPM1 = 0X42;break; //Ä£¿é1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÎÞÖÐ¶Ï
   case 1: CCAPM1 = 0X53;break; //Ä£¿é1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÏÂ½µÑØ²úÉúÖÐ¶Ï
   case 2: CCAPM1 = 0X63;break; //Ä£¿é1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÉÏÉýÑØ²úÉúÖÐ¶Ï
   case 3: CCAPM1 = 0X73;break; //Ä£¿é1ÉèÖÃÎª8Î»PWMÊä³ö£¬Ìø±äÑØ²úÉúÖÐ¶Ï
   default: break;
   }
   }
   else
     if(module==2)
        {
        switch(mode)
    { 
      case 0: CCAPM0 = CCAPM1 = 0X42;break; //Ä£¿é0ºÍ1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÎÞÖÐ¶Ï
      case 1: CCAPM0 = CCAPM1 = 0X53;break; //Ä£¿é0ºÍ1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÏÂ½µÑØ²úÉúÖÐ¶Ï
      case 2: CCAPM0 = CCAPM1 = 0X63;break; //Ä£¿é0ºÍ1ÉèÖÃÎª8Î»PWMÊä³ö£¬ÉÏÉýÑØ²úÉúÖÐ¶Ï
      case 3: CCAPM0 = CCAPM1 = 0X73;break; //Ä£¿é0ºÍ1ÉèÖÃÎª8Î»PWMÊä³ö£¬Ìø±äÑØ²úÉúÖÐ¶Ï
      default: break;
      }
       }
CR=1; //PCA¼ÆÊýÆ÷¿ªÊ¼¼ÆÊý
}
/********************************************************************
                              ¶¨Ê±Æ÷º¯Êý
*********************************************************************/
void PCA_Intrrpt(void) interrupt 7
{
if(CCF0) CCF0=0;
if(CCF1) CCF1=0;   //Èí¼þÇåÁã 
if(CF)   CF=0;    //Èí¼þÇåÁã 
}

/********************************************************************
                             Ö÷º¯Êý
*********************************************************************/
void main()
{
TMOD|=0x02; /* timer 0 mode 2: 8-Bit reload */ 
TH0=0xff;
TR0=1;     
PWM_clock(2);   // PCA/PWMÊ±ÖÓÔ´Îª ¶¨Ê±Æ÷0µÄÒç³ö
PWM_start(0,0); // Ä£¿é0,ÉèÖÃÎªPWMÊä³ö,ÎÞÖÐ¶Ï,³õÊ¼Õ¼¿ÕÒòËØÎª25%
while(1)
   {
    DelayMs(250);
   }
}

/********************************************************************
                              结束
*********************************************************************/