pwm.c

来自「基于c的电动机保护程序」· C语言 代码 · 共 88 行

/*************************************************************************************
*	Copyright (c) 2005 by National ASIC System Engineering Research Center.
*	PROPRIETARY RIGHTS of ASIC are involved in the subject matter of this 
*	material.  All manufacturing, reproduction, use, and sales rights 
*	pertaining to this subject matter are governed by the license agreement.
*	The recipient of this software implicitly accepts the terms of the license.
*
*	File Name: pwm.c
*
*	File Description:
*			The file includes three functions to initialize the lcd controller and
*		display some pictures on the lcd.
*
*	Function Description:
*		STATUS	ModulePwm(void)
*								The top function of PWM experiment.
*
*		void	run_pwm(void)			
*								It start the Pwm to work.
*
*		STATUS	set_fix(U32 sample)
*								The function is to set fixed period.
*								sample:	The sample is configured into FIFO of Pwm.
*
*		STATUS	set_unfix(U8 prescaler)
*								The function is to set the unfixed period.
*								prescaler:	It configures the period by BUS frequence divided.

*	Created by Michael <[e-mail]>, 2005-03-29
**************************************************************************************/


#include "hardware_intc.h"
#include "hardware_reg.h"


int sound_flag = 0;
int sound_time = 0;
void sound(void)
{

 
	*(RP)(PWM2_C) = 0X000013ff;
	//*(volatile unsigned long *)(0x1000c010) = 0 ;	
	if(sound_time == 0)
	{
		*(volatile unsigned long *)(0x1000c014) = 0xffff;
		*(volatile unsigned long *)(0x1000c018) = 0X0000ffff;//PWM2_P为周期寄存器
	}
	sound_time++;
	if(sound_time ==50)
	{  
		//*(RP)(PWM2_S) = 0xffff;
		*(RP)(PWM2_C) = 0 ;
		
		sound_time =0;
		sound_flag = 0;
	} 
	
}

void Alarm_Sound(void)
{

 
	*(RP)(PWM2_C) = 0X000010ff;
	//*(RP)(PWM2_S) = 0xffff;
	*(RP)(PWM2_P)  = 0X0000fffd;//PWM2_P为周期寄存器
	
	 
	
}


void Break_Sound(void)
{

 
	*(RP)(PWM2_C) = 0X00001000;
	*(RP)(PWM2_S) = 0xffff;
	*(RP)(PWM2_P)  = 0X0000ffff;//PWM2_P为周期寄存器
	
}