#include "motor.h"


void Motor_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //ʹ��PB�˿�ʱ��
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_14;	//�˿�����
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;      //
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    
	GPIO_Init(GPIOB, &GPIO_InitStructure);					     
}
void PWM_Init(u16 arr,u16 psc)
{		 		
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	Motor_Init();	

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);// 
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);  //ʹ��GPIO����ʱ��ʹ��
	//���ø�����Ϊ����,���TIM1 CH1 CH4��PWM���岨��
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_11; //TIM_CH1 //TIM_CH4
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //����
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	TIM_TimeBaseStructure.TIM_Period = arr; //�һ¼�װ�����Զ���װ�ؼĴ������ڵ�ֵ	 
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //���ΪTIMxʱ��Ƶ�ʳ�����Ԥ��Ƶֵ  ����Ƶ
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //����ʱ�ӷָ�:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM���ϼ���ģʽ
	TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //����TIM_TimeBaseInitStruct��ָ���IJ�����ʼ��TIMx��ʱλ


	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //ѡ��ʱ��ģʽ:TIM������ȵ���ģʽ1
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //�Ƚ����ʹ��
	TIM_OCInitStructure.TIM_Pulse = 0;                            //���ô�װ�벶��ȽϼĴ��ֵ
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;     //:TIM����Ƚϼ��Ը�
	TIM_OC1Init(TIM1, &TIM_OCInitStructure);  //����TIM_OCInitStruct��ָ���IJ�����ʼ������TIMx
	TIM_OC4Init(TIM1, &TIM_OCInitStructure);  //����TIM_OCInitStruct��ָ���IJ�����ʼ������TIMx

	TIM_CtrlPWMOutputs(TIM1,ENABLE);	//MOE �����ʹ��	

	TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);  //CH1Ԥװ��ʹ��	 
	TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);  //CH4Ԥװ��ʹ��	 

	TIM_ARRPreloadConfig(TIM1, ENABLE); //ʹ��TIMx��ARR�ϵ�Ԥװ�ؼĴ���

	TIM_Cmd(TIM1, ENABLE);  //ʹ��TIM1
 
}