#include "timer.h"
#include "led.h"
#include "wifi.h"

extern char smog_value_buf[7];  //�洢����Ũ��ֵ���������ݴ���
extern char temp_value_buf[7];	//�洢�¶�ֵ
extern char beam_value_buf[7];  //�洢����ǿ��ֵ


//ͨ�ö�ʱ���жϳ�ʼ��
//����ʱ��ѡ��ΪAPB1��2������APB1Ϊ36M
//arr���Զ���װֵ��
//psc��ʱ��Ԥ��Ƶ��
//����ʹ�õ��Ƕ�ʱ��3!
void TIM3_Int_Init(u16 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //ʱ��ʹ��

	TIM_TimeBaseStructure.TIM_Period = arr; //��������һ�������¼�װ�����Զ���װ�ؼĴ������ڵ�ֵ	 ������5000Ϊ500ms
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //����������ΪTIMxʱ��Ƶ�ʳ�����Ԥ��Ƶֵ  10Khz�ļ���Ƶ��  
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //����ʱ�ӷָ�:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM���ϼ���ģʽ
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //����TIM_TimeBaseInitStruct��ָ���IJ�����ʼ��TIMx��ʱ�������λ
 
	TIM_ITConfig(  //ʹ�ܻ���ʧ��ָ����TIM�ж�
		TIM3, //TIM2
		TIM_IT_Update ,
		ENABLE  //ʹ��
		);
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3�ж�
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;  //��ռ���ȼ�0��
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //�����ȼ�3��
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQͨ����ʹ��
	NVIC_Init(&NVIC_InitStructure);  //����NVIC_InitStruct��ָ���IJ�����ʼ������NVIC�Ĵ���

	TIM_Cmd(TIM3, ENABLE);  //ʹ��TIMx����
							 
}

//ÿ��300ms����һ������
void TIM3_IRQHandler(void)   //TIM3�ж�
{
	if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //���ָ����TIM�жϷ������:TIM �ж�Դ 
	{
		TIM_ClearITPendingBit(TIM3, TIM_IT_Update  );  //���TIMx���жϴ�����λ:TIM �ж�Դ 
	}
}


/**
 * @description: Pwm
 * @param {u16} arr
 * @param {u16} psc
 * @return {*}
 */
void TIM3_PWM_Init(u16 arr,u16 psc)
{  
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);	//ʹÄܶ¨Ê±Æ÷3ʱÖÓ
 	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //ʹÄÜGPIOÍâÉèºÍAFIO¸´Óù¦ÄÜÄ£¿éʱÖÓ
	
	GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3²¿·ÖÖØÓ³Éä  TIM3_CH2->PB5    
 
   //ÉèÖøÃÒý½ÅΪ¸´ÓÃÊä³ö¹¦ÄÜ,Êä³öTIM3 CH2µÄPWMÂö³å²¨ÐÎ	GPIOB.5
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //TIM_CH2
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //¸´ÓÃÍÆÍìÊä³ö
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);//³õʼ»¯GPIO
 
   //³õʼ»¯TIM3
	TIM_TimeBaseStructure.TIM_Period = arr; //ÉèÖÃÔÚÏÂÒ»¸ö¸üÐÂʼþ×°Èë»î¶¯µÄ×Ô¶¯ÖØ×°ÔؼĴæÆ÷ÖÜÆÚµÄÖµ
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //ÉèÖÃÓÃÀ´×÷ΪTIMxʱÖÓƵÂʳýÊýµÄÔ¤·ÖƵֵ 
	TIM_TimeBaseStructure.TIM_ClockDivision = 0; //ÉèÖÃʱÖÓ·Ö¸î:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòÉϼÆÊýģʽ
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //¸ù¾ÝTIM_TimeBaseInitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯TIMxµÄʱ¼ä»ùÊýµ¥Î»
	
	//³õʼ»¯TIM3 Channel2 PWMģʽ	 
	TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //Ñ¡Ôñ¶¨Ê±Æ÷ģʽ:TIMÂö³å¿í¶Èµ÷ÖÆģʽ2
 	TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //±È½ÏÊä³öʹÄÜ
	TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //Êä³ö¼«ÐÔ:TIMÊä³ö±È½Ï¼«ÐÔ¸ß
	TIM_OC2Init(TIM3, &TIM_OCInitStructure);  //¸ù¾ÝTÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèTIM3 OC2

	TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);  //ʹÄÜTIM3ÔÚCCR2ÉϵÄԤװÔؼĴæÆ÷
 
	TIM_Cmd(TIM3, ENABLE);  //ʹÄÜTIM3
}