readdcoc2pwm.c

来自「Microchip的官方PIC24H系列16位单片机的外设源程序库。」· C语言 代码 · 共 22 行

#include <p30fxxxx.h>
#include <outcompare.h>

/***********************************************************************
*    Function Name:  ReadDCOC2PWM                                      *
*    Description:    This routine reads duty cycle from Secondary      *
*                    register in PWM mode                              *
*    Parameters:     None                                              *
*    Return Value:   unsigned int: duty cycle from Secondary register  *
***********************************************************************/

unsigned int ReadDCOC2PWM()
{
    /* check if OC is in PWM Mode */
    if((OC2CONbits.OCM & 0x06) == 0x06)
    {       
        return OC2RS;/* Output Compare Secondary Register */
    }
    else 
        return -1;
}