pwm_ctrl.h

Luminary Micro BLDC motor control software

//*****************************************************************************
//
// pwm_ctrl.h - Prototypes for the PWM control routines.
//
// Copyright (c) 2007-2008 Luminary Micro, Inc.  All rights reserved.
// 
// Software License Agreement
// 
// Luminary Micro, Inc. (LMI) is supplying this software for use solely and
// exclusively on LMI's microcontroller products.
// 
// The software is owned by LMI and/or its suppliers, and is protected under
// applicable copyright laws.  All rights are reserved.  You may not combine
// this software with "viral" open-source software in order to form a larger
// program.  Any use in violation of the foregoing restrictions may subject
// the user to criminal sanctions under applicable laws, as well as to civil
// liability for the breach of the terms and conditions of this license.
// 
// THIS SOFTWARE IS PROVIDED "AS IS".  NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR
// CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 716 of the BLDC motor application.
//
//*****************************************************************************

#ifndef __PWM_CTRL_H__
#define __PWM_CTRL_H__

//*****************************************************************************
//
// Prototypes for the exported variables and functions.
//
//*****************************************************************************
extern unsigned long g_ulPWMFrequency;
extern unsigned long g_ulTrapDutyCycle;
extern void PWMSetMinPulseWidth(void);
extern void PWMSetDeadBand(void);
extern void PWMSetFrequency(void);
extern void PWM0IntHandler(void);
extern unsigned long PWMGetPeriodCount(void);
extern void PWMReducePeriodCount(unsigned long ulCount);
extern void PWMSetDutyCycle(unsigned long ulDutyCycleA,
                            unsigned long ulDutyCycleB,
                            unsigned long ulDutyCycleC);
extern void PWMOutputPrecharge(void);
extern void PWMOutputOn(void);
extern void PWMOutputTrapezoid(unsigned long ulEnable);
extern void PWMOutputOff(void);
extern void PWMSetUpdateRate(unsigned char ucUpdateRate);
extern void PWMInit(void);

#endif // __PWM_CTRL_H__