0301_BOOT/Bsp/led.c

#include "led.h"
#include "bsp.h"

//////////////////////////////////////////////////////////////////////////////////	 
//本程序只供学习使用，未经作者许可，不得用于其它任何用途
//ALIENTEK战舰STM32开发板
//LED驱动代码	   
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//修改日期:2012/9/2
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2009-2019
//All rights reserved									  
////////////////////////////////////////////////////////////////////////////////// 	   

//初始化PB5和PE5为输出口.并使能这两个口的时钟		    
//LED IO初始化
void LED_Init(void)
{
 
// GPIO_InitTypeDef  GPIO_InitStructure;
 	
 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOE, ENABLE);	 //使能PB,PE端口时钟

#ifdef COLLECT_DEVICE
	//LED_RUN(PE14)
	GPIO_COMM_Init(RCC_APB2Periph_GPIOE, GPIOE, 
			GPIO_Pin_14, GPIO_Mode_Out_PP, GPIO_Speed_50MHz);
#else
	//LED_RUN(PC2)
	GPIO_COMM_Init(RCC_APB2Periph_GPIOC, GPIOC, 
			GPIO_Pin_2, GPIO_Mode_Out_PP, GPIO_Speed_50MHz);
#endif

}



//通用定时器中断初始化
//这里时钟选择为APB1的2倍，而APB1为36M
//arr：自动重装值。
//psc：时钟预分频数
//这里使用的是定时器3!




__IO uint32_t  led0_cnt_dir = 0;

__IO uint32_t  led0_pwm_val = 0;

uint32_t  led1_delay = 3;
uint32_t  led2_delay = 3;
uint32_t  led3_delay = 3;

uint8_t led1_duty = LED1_DUTY;
uint8_t led2_duty = LED2_DUTY;
uint8_t led3_duty = LED3_DUTY;


uint32_t led1_cycle = LED1_CYCLE;
uint32_t led2_cycle = LED2_CYCLE;
uint32_t led3_cycle = LED3_CYCLE;


uint16_t CCR1_Val = LED0_CYCLE; 
uint16_t CCR2_Val = LED1_CYCLE;  
uint16_t CCR3_Val = LED2_CYCLE;  
uint16_t CCR4_Val = LED3_CYCLE;  

//uint16_t PrescalerValue = 0;  

uint16_t capture = 0; 

void TIM3_Int_Init(u16 arr,u16 psc)
{
  
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;  
  TIM_OCInitTypeDef  TIM_OCInitStructure; 
	NVIC_InitTypeDef NVIC_InitStructure;
  
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能
//  PrescalerValue = (uint16_t) ((SystemCoreClock / 2) / 500) - 1;//=168  
  
  /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = arr;//65535  
  TIM_TimeBaseStructure.TIM_Prescaler = psc;  
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;  
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
  
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);  
  
  /* Prescaler configuration */  
  //TIM_PrescalerConfig(TIM3, PrescalerValue, TIM_PSCReloadMode_Immediate);//对72MHz进行710分频，即为50KHz  
  
  
  /* Output Compare Timing Mode configuration: Channel1 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = CCR1_Val;  
  TIM_OC1Init(TIM3, &TIM_OCInitStructure);  
  TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Disable);  
  
  /* Output Compare Timing Mode configuration: Channel2 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 10;//CCR2_Val;  
  TIM_OC2Init(TIM3, &TIM_OCInitStructure);  
  TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Disable);  
  
  /* Output Compare Timing Mode configuration: Channel3 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 10;//CCR3_Val;  
  TIM_OC3Init(TIM3, &TIM_OCInitStructure);  
  TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Disable);  
  
  /* Output Compare Timing Mode configuration: Channel4 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 10;//CCR4_Val;  
  TIM_OC4Init(TIM3, &TIM_OCInitStructure);  
  TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Disable); 
							 
               
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;               //TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;     //先占优先级0级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;            //从优先级3级
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);                               //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器
  /* TIM Interrupts enable */    
  TIM_ITConfig(TIM3, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, ENABLE);  
      
  /* TIM3 enable counter */  
  TIM_Cmd(TIM3, ENABLE); 
  LED0 = 0;
  LED1 = 0;
  LED2 = 0;
  LED3 = 0;
  capture = TIM_GetCapture1(TIM3);  
  TIM_SetCompare1(TIM3, capture + 100);
  capture = TIM_GetCapture1(TIM3);  
  TIM_SetCompare2(TIM3, capture + 100);
  capture = TIM_GetCapture1(TIM3);  
  TIM_SetCompare3(TIM3, capture + 100);
  capture = TIM_GetCapture1(TIM3);  
  TIM_SetCompare4(TIM3, capture + 100);
}

void TIM3_Int_Deinit(void)
{
  
	NVIC_InitTypeDef NVIC_InitStructure;
  
  TIM_DeInit(TIM3);			 
               
	NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;               //TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;     //先占优先级0级
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;            //从优先级3级
	NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE;               //IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);                               //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器
  /* TIM Interrupts enable */    
  TIM_ITConfig(TIM3, TIM_IT_CC1 | TIM_IT_CC2 | TIM_IT_CC3 | TIM_IT_CC4, DISABLE);  
      
  /* TIM3 enable counter */  
  TIM_Cmd(TIM3, DISABLE); 
}
//uint8_t time[4]={0,0,0,0};

//void TIM3_IRQHandler(void)   //TIM3中断
//{
//    
//    //
//   if (TIM_GetITStatus(TIM3, TIM_IT_CC1) != RESET)  
//    {  
//        TIM_ClearITPendingBit(TIM3, TIM_IT_CC1);  
//        if(led1_delay>0)led1_delay--; 
//       
//        if(led1_delay>10*100)led1_delay=0; 
//       
//        capture = TIM_GetCapture1(TIM3);  
//        TIM_SetCompare1(TIM3, capture + CCR1_Val);
//      
//    } 
//  /*7500为一个循环，周期为7500/500000=0.015，频率为66.67Hz*/  
//   if (TIM_GetITStatus(TIM3, TIM_IT_CC2) != RESET)  
//    {  
//      TIM_ClearITPendingBit(TIM3, TIM_IT_CC2);  
//      if(led1_delay!=0){
//        if(LED1)  
//        {  
//            LED1=0;                                               //PB9=0。ARR增加5000后，到达这条语句。  
//            CCR2_Val=(led1_cycle * led1_duty / 100);   //占空比
//        }  
//        else  
//        {  
//            LED1=1;                                               //PB9=1
//            CCR2_Val=led1_cycle-(led1_cycle * led1_duty / 100);  
//        }  //在原来的CCR1（即capture）基础上加5000，则再过5000，又会触发中断  
//        //另外，有个问题，进入中断时，当ARR计数器快加到65535，而又不足5000时，不是会有数据多余，而产生波形的移动吗？  
//        //回答：不用担心。例如进入中断是，ARR=65000，65000+5000=70000>65535，那么高位会舍去，即为70000-65536=4464  
//        //等于是来了个循环，两次中断间ARR的增量还是5000。所以为了波形的稳定，初始化时，必须要有TIM_Period = 65535  
//      }
//      
//        if(led1_delay>0)led1_delay--;
//        if(led1_delay>10*100)led1_delay=10*100;
//      else{
//        LED1=1; 
//      }
//      
//        capture = TIM_GetCapture2(TIM3);  
//        TIM_SetCompare2(TIM3, capture + CCR2_Val);
//    } 
//    if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET)  
//    {  
//      TIM_ClearITPendingBit(TIM3, TIM_IT_CC3);  
//           
//      if(led2_delay!=0){
//        if(LED2)  
//        {  
//            LED2=0;                                               //PB7=0。ARR增加5000后，到达这条语句。  
//            CCR3_Val=(led2_cycle * led2_duty / 100);   //占空比
//        }  
//        else  
//        {  
//            LED2=1;                                               //PB7=1
//            CCR3_Val=led2_cycle-(led2_cycle * led2_duty / 100);  
//        }  
//        
//        if(led2_delay>0)led2_delay--;
//        if(led2_delay>10*100)led2_delay=10*100;
//      }
//      else{
//        LED2=1; 
//      }
//        capture = TIM_GetCapture3(TIM3);  
//        TIM_SetCompare3(TIM3, capture + CCR3_Val);
//    } 
//   if (TIM_GetITStatus(TIM3, TIM_IT_CC4) != RESET)  {
//      TIM_ClearITPendingBit(TIM3, TIM_IT_CC4);  
//          
//      if(led3_delay!=0){
//        if(LED3)  
//        {  
//            LED3=0;                                               //PB8=0。ARR增加5000后，到达这条语句。  
//            CCR4_Val=(led3_cycle * led3_duty / 100);   //占空比
//        }  
//        else  
//        {  
//            LED3=1;                                               //PB8=1
//            CCR4_Val=led3_cycle-(led3_cycle * led3_duty / 100);  
//        }  
//        
//        if(led3_delay>0)led3_delay--;
//        if(led3_delay>10*100)led3_delay=10*100;
//        }
//      else{
//        LED3=1; 
//      }
//        capture = TIM_GetCapture4(TIM3);  
//        TIM_SetCompare4(TIM3, capture + CCR4_Val);
//   }
//}

void start_led(uint8_t led,uint32_t delay, uint8_t duty,uint32_t period){
  if(led == 1){
    LED1=0; 
    led1_delay   = delay;
    led1_duty = duty;
    led1_cycle  = period;
    capture = TIM_GetCapture2(TIM3);  
    TIM_SetCompare2(TIM3, capture + led1_cycle);
  }
  else if(led == 2){
    LED2=0; 
    led2_delay   = delay;
    led2_duty = duty;
    led2_cycle  = period;
    capture = TIM_GetCapture3(TIM3);  
    TIM_SetCompare3(TIM3, capture + led2_cycle);
  }
  else if(led == 3){
    LED3=0; 
    led3_delay   = delay;
    led3_duty = duty;
    led3_cycle  = period;
    capture = TIM_GetCapture4(TIM3);  
    TIM_SetCompare4(TIM3, capture + led3_cycle);
  }
}