readdcoc4pwm.c

来自「基於 c51/8051 的 nand Flash Memory HY27US08」· C语言 代码 · 共 29 行

#if defined(__PIC24F__)
#include <p24Fxxxx.h>
#endif
#include <outcompare.h>

#ifdef _OCMP4
/********************************************************************
*    Function Name:  ReadDCOC4PWM                                   *
*    Description:    This routine reads duty cycle from Master      *
*                    register in PWM mode                           *
*    Parameters:     None                                           *
*    Return Value:   unsigned int:duty cycle from Secondary register*
********************************************************************/

unsigned int ReadDCOC4PWM()
{
    /* check if OC is in PWM Mode */
    if((OC4CONbits.OCM & 0x06) == 0x06)
    {       
        return OC4RS;       /* Output Compare Secondary Register */
    }
    else 
        return -1;
}

#else
#warning "Does not build on this target"
#endif