pll.c

路径识别是体现智能车智能水平的一个重要标志

#include <hidef.h>      /* common defines and macros */
#include <mc9s12dg128.h>     /* derivative information */

void PLL_Init(void) {
  REFDV=0x01; 
  SYNR=0x02;						    //Set the system clock 48MHz
}

void Start_PLL(void) {
  asm{
    BRCLR CRGFLG,#$08,*
    BSET CLKSEL,#$80
    }													  
}