#include "motor.h"


void PWM_Init(u16 arr,u16 psc)
{		 		
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); 
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_11; 
	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;  
	TIM_TimeBaseStructure.TIM_Prescaler =psc; 
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; 
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
	TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); 


	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; 
	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; 
	TIM_OCInitStructure.TIM_Pulse = 0;                            
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;    
	TIM_OC1Init(TIM1, &TIM_OCInitStructure);  
	TIM_OC4Init(TIM1, &TIM_OCInitStructure);  

	TIM_CtrlPWMOutputs(TIM1,ENABLE);	

	TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);  
	TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable); 	 

	TIM_ARRPreloadConfig(TIM1, ENABLE); 

	TIM_Cmd(TIM1, ENABLE); 

}