lle_xgpwm.h

BCM 控制demo源代码

/*******************************************************************************/
/**
Copyright (c) 2007 Freescale Semiconductor
\file       lle_XGPWM.h
\brief      Shared variables and function prototypes for XGATE-PWM generation
\author     Freescale Semiconductor
\author     B05114
\version    1.0
\date       April/2007
*/
/*******************************************************************************/

#ifndef _LLE_XGPWM_H
#define _LLE_XGPWM_H


/** S12X derivative information */ 
#include <MC9S12XEP100.h> 

/** Variable types and common definitions */
#include "typedefs.h" 


/* PWM channel struct */
typedef struct 
{
    UINT8 *port;          /* Pointer to data port register */
    UINT8 *ddr;           /* Pointer to direction register of port */
    UINT8 port_mask;      /* Individual pin of port dedicated to be PWM */
    UINT8 period;         /* Period owerflow value */
    UINT8 cnt;            /* PWM counter */	
    UINT8 duty;           /* Duty value */
}PWMChannel;


/* Shared variables */
#pragma DATA_SEG SHARED_DATA  
  extern volatile PWMChannel xPWM_ch[2];   /* Array of PWM channels structs */
#pragma DATA_SEG DEFAULT  


/** Function Prototypes */

/** Periodic interrupt timer initialization */
void lle_Init_PIT(void);

/** PWM initialization */
void lle_Init_PWM(void);

/** Set PWM duty cycle */
void lle_Set_PWM_DutyCycle(PWMChannel volatile *ch,byte duty); 

#endif /* _LLE_XGPWM_H */ 

/*******************************************************************************/