/******************************************************************************
 * Copyright (C) 2014-2015 HangZhou SiZhu Co.,LTD.
 *
 *-----------------------------------------------------------------------------
 * File: 			    fm25v02.c
 * Description:		FRAM operation code
 * Author:			  Lishoujian (867693272@qq.com)
 * Date:			    Jan 8, 2015
 *****************************************************************************/

/* ----------------------- Platform includes --------------------------------*/

#include "PWM.h"
#include "sys.h"





/******************************************
 * func:    PWM1_out
 * desc:    set pwm1
 * input:   
 *   - period: period clk num
 *   - count : duty clk num (set duty cycle) 
 *   - div   : frequence division - 1
 * output:  eg: when period = 1000,count=500,div=71,cpu_freq = 72MHZ  then => period time = 1000us & duty = 50%
 * return:  none
 *****************************************/
void PWM1_out(uint16 period,uint16 div)
{
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;

	TIM_DeInit(TIM4);
	
	RCC_APB1PeriphClockCmd(	RCC_APB1Periph_TIM4 , ENABLE );      //TIM3£¬TIM4
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO, ENABLE); 
	GPIO_PinRemapConfig(GPIO_Remap_TIM4,ENABLE);
	
	/* Time base configuration */		 
	TIM_TimeBaseStructure.TIM_Period = period-1;                   //¼ÆÊýµ½B´Î£¬ÎªÒ»¸ö¶¨Ê±ÖÜÆÚ
	TIM_TimeBaseStructure.TIM_Prescaler = div-1;	                 //ÉèÖÃÔ¤·ÖƵ
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1 ;	   //ÉèÖÃʱÖÓ·ÖƵϵÊý£º²»·ÖƵ
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //ÏòÉϼÆÊýģʽ

	TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);

	/* PWM1 Mode configuration: Channel3 */
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;	           //ÅäÖÃΪPWMģʽ1
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;	
	TIM_OCInitStructure.TIM_Pulse = period/2;	        //ÉèÖÃÌø±äÖµ£¬µ±¼ÆÊýÆ÷¼ÆÊýµ½Õâ¸öֵʱ£¬µçƽ·¢ÉúÌø±ä
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;    //

	TIM_OC2Init(TIM4, &TIM_OCInitStructure);	                   //ʹÄÜͨµÀ3

	TIM_OC2PreloadConfig(TIM4, TIM_OCPreload_Enable);            //ʹÄÜͨµÀ3±È½Ï¼Ä´æÆ÷

	TIM_ARRPreloadConfig(TIM4, ENABLE);			                     // ʹÄÜTIM8ÖØÔؼĴæÆ÷ARR


	TIM_Cmd(TIM4, ENABLE);                                       //ʹÄܶ¨Ê±Æ÷8
	
}




/******************************************
 * func:   µ¥Âö³åÐÎʽ TIM3 CH1
 * desc:    set pwm3
 * input:   
 *   - period: period
 *   - count : set duty cycle 
 *   - div   : frequence division
 * output:  none
 * return:  none
 *****************************************/
 /*12MµÄʱÖÓ*/
void pluse_init_out(uint8 pluse_enable, uint16 pluse_wide)
{


	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;

	TIM_DeInit(TIM3);

	RCC_APB1PeriphClockCmd(	RCC_APB1Periph_TIM3 , ENABLE );      //TIM3£¬TIM4
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO, ENABLE); 
	GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3,ENABLE);

	/* Time base configuration */		 
	TIM_TimeBaseStructure.TIM_Period 			= 1000;                   //¼ÆÊýµ½B´Î£¬ÎªÒ»¸ö¶¨Ê±ÖÜÆÚ
	TIM_TimeBaseStructure.TIM_Prescaler 		= 3000;	                 //ÉèÖÃÔ¤·ÖƵ
	TIM_TimeBaseStructure.TIM_ClockDivision 	= TIM_CKD_DIV4 ;	   //ÉèÖÃʱÖÓ·ÖƵϵÊý£º²»·ÖƵ
	TIM_TimeBaseStructure.TIM_CounterMode 		= TIM_CounterMode_Up;  //ÏòÉϼÆÊýģʽ

	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

	/* pluse Mode configuration: Channel3 */
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;	           	//ÅäÖÃΪPWMģʽ1
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;	
	TIM_OCInitStructure.TIM_Pulse = pluse_wide;	        			//ÉèÖÃÌø±äÖµ£¬µ±¼ÆÊýÆ÷¼ÆÊýµ½Õâ¸öֵʱ£¬µçƽ·¢ÉúÌø±ä
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;    	//

	TIM_OC2Init(TIM3, &TIM_OCInitStructure);	                   //ʹÄÜͨµÀ3

	TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);            //ʹÄÜͨµÀ3±È½Ï¼Ä´æÆ÷

	
	TIM_SelectOnePulseMode(TIM3, TIM_OPMode_Single);

	TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Trigger);

	
	TIM_Cmd(TIM3, ENABLE);

}