STM32H750XB_RT-THREAD/38-SAI—音频/SAI—录音与回放/User/touch_pad/bsp_touchpad.c

/**
  ******************************************************************************
  * @file    bsp_touchpad.c
  * @author  fire
  * @version V1.0
  * @date    2015-xx-xx
  * @brief   <EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӿ<EFBFBD>
  ******************************************************************************
  * @attention
  *
  * ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD>  STM32 H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  
  * <EFBFBD><EFBFBD>̳    :http://www.firebbs.cn
  * <EFBFBD>Ա<EFBFBD>    :https://fire-stm32.taobao.com
  *
  ******************************************************************************
  */
#include "./touch_pad/bsp_touchpad.h"
#include "./delay/core_delay.h" 

TIM_HandleTypeDef TIM_Handle;
//<2F><><EFBFBD><EFBFBD>û<EFBFBD><C3BB><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
__IO uint16_t tpad_default_val=0;
//<2F><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
#define TPAD_ARR_MAX_VAL 	0XFFFF	
//<2F><>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(tpad_default_val + TPAD_GATE_VAL),<2C><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD>.
#define TPAD_GATE_VAL 	100	
/**
  * @brief  <EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ纯<EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
static void TPAD_Reset(void)
{
    GPIO_InitTypeDef  GPIO_InitStructure; 
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    GPIO_InitStructure.Pin = TPAD_TIM_CH_PIN;
    GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;	
    GPIO_InitStructure.Pull = GPIO_PULLDOWN; 
    HAL_GPIO_Init(TPAD_TIM_CH_PORT, &GPIO_InitStructure);

    //<2F><><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD>ƽ,<2C>ŵ<EFBFBD>
    HAL_GPIO_WritePin(TPAD_TIM_CH_PORT, TPAD_TIM_CH_PIN ,GPIO_PIN_RESET);						 
    //<2F><><EFBFBD><EFBFBD>һС<D2BB><D0A1>ʱ<EFBFBD><CAB1><EFBFBD>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>֤<EFBFBD>ŵ<EFBFBD><C5B5><EFBFBD>ȫ
    HAL_Delay(5);

    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>±<EFBFBD>־
    __HAL_TIM_CLEAR_FLAG(&TIM_Handle,TIM_FLAG_CC1);
    __HAL_TIM_CLEAR_FLAG(&TIM_Handle,TIM_FLAG_UPDATE);
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0
    __HAL_TIM_SET_COUNTER(&TIM_Handle,0);
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ù<EFBFBD><C3B9>ܣ<EFBFBD><DCA3><EFBFBD><EFBFBD>ϡ<EFBFBD><CFA1><EFBFBD><EFBFBD><EFBFBD>
    GPIO_InitStructure.Pin = TPAD_TIM_CH_PIN; 
    GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStructure.Alternate = TPAD_TIMx_AF;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH; 
    GPIO_InitStructure.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(TPAD_TIM_CH_PORT,&GPIO_InitStructure);
}

/**
  * @brief  <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>TIMx<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
void TIM_Mode_Config(void)
{
    TIM_IC_InitTypeDef TIM_IC_Config; 
    GPIO_InitTypeDef  GPIO_InitStructure;
  
    TPAD_TIM_CLK_ENABLE();
    TPAD_TIM_GPIO_CLK_ENABLE();

    //<2F>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
    GPIO_InitStructure.Pin = TPAD_TIM_CH_PIN;	
    //<2F><><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>
    GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStructure.Alternate = TPAD_TIMx_AF;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
    GPIO_InitStructure.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(TPAD_TIM_CH_PORT, &GPIO_InitStructure); 
  
    TIM_Handle.Instance = TPAD_TIMx;
    TIM_Handle.Init.RepetitionCounter = 0;
    
    TIM_Handle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
    TIM_Handle.Init.CounterMode = TIM_COUNTERMODE_UP;
    TIM_Handle.Init.Period = TPAD_ARR_MAX_VAL;
    //<2F>趨<EFBFBD><E8B6A8>ʱ<EFBFBD><CAB1>Ԥ<EFBFBD><D4A4>Ƶ<EFBFBD><C6B5>Ŀ<EFBFBD><C4BF>ʱ<EFBFBD><CAB1>Ϊ<EFBFBD><CEAA>9MHz(200Mhz/22)
    TIM_Handle.Init.Prescaler = 23 - 1;
      
    HAL_TIM_IC_Init(&TIM_Handle);
  
    TIM_IC_Config.ICFilter = 0;
    TIM_IC_Config.ICPolarity = TIM_ICPOLARITY_RISING;
    TIM_IC_Config.ICPrescaler = TIM_ICPSC_DIV1;
    TIM_IC_Config.ICSelection = TIM_ICSELECTION_DIRECTTI;
    HAL_TIM_IC_ConfigChannel(&TIM_Handle, &TIM_IC_Config, TPAD_TIM_Channel_X);
  
    //<2F><><EFBFBD><EFBFBD>TIM 
    HAL_TIM_IC_Start(&TIM_Handle, TPAD_TIM_Channel_X);    
}
/**
  * @brief  <EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
  * @param  <EFBFBD><EFBFBD>
  * @retval TIMx_CCRx<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>ֵ
  */
static uint16_t TPAD_Get_Val(void)
{		
  uint16_t temp;
  /* <20>ȷŵ<C8B7><C5B5><EFBFBD>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */	
	TPAD_Reset();
	//<2F>ȴ<EFBFBD><C8B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	while(__HAL_TIM_GET_FLAG(&TIM_Handle,TIM_FLAG_CC1) == RESET )
	{
		//<2F><>ʱ<EFBFBD><CAB1>,ֱ<>ӷ<EFBFBD><D3B7><EFBFBD>CNT<4E><54>ֵ
		if(__HAL_TIM_GET_COUNTER( &TIM_Handle)>TPAD_ARR_MAX_VAL-500)
			return __HAL_TIM_GET_COUNTER(&TIM_Handle);
	};
	/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>غ<EFBFBD><D8BA><EFBFBD><EFBFBD><EFBFBD>TIMx_CCRx<52>Ĵ<EFBFBD><C4B4><EFBFBD>ֵ */
	 temp = HAL_TIM_ReadCapturedValue(&TIM_Handle, TPAD_TIM_Channel_X);  
//  printf("scan_rval=%d\n",temp);
  return temp;
} 	
/**
  * @brief  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>n<EFBFBD>β<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
  * @param  n<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>
  * @retval n<EFBFBD>ζ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
  */
static uint16_t TPAD_Get_MaxVal(uint8_t n)
{
	uint16_t temp=0;
	uint16_t res=0;
	while(n--)
	{
		temp=TPAD_Get_Val();//<2F>õ<EFBFBD>һ<EFBFBD><D2BB>ֵ
		if(temp>res)res=temp;
	};
	return res;
}  

/**
  * @brief  <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @note   <EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ص<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡֵ
  * @param  <EFBFBD><EFBFBD>
  * @retval 0,<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD>;1,<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>ʧ<EFBFBD><EFBFBD>
  */

uint8_t TPAD_Init(void)
{
	uint16_t buf[10];
	uint32_t temp=0;
	uint8_t j,i;
	
	TIM_Mode_Config();
  
	for(i=0;i<10;i++)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ10<31><30>
	{				 
		buf[i]=TPAD_Get_Val();
		HAL_Delay(10);	    
	}				    
	for(i=0;i<9;i++)//<2F><><EFBFBD><EFBFBD>
	{
		for(j=i+1;j<10;j++)
		{
			if(buf[i]>buf[j])//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
			{
				temp=buf[i];
				buf[i]=buf[j];
				buf[j]=temp;
			}
		}
	}
	temp=0;
	//ȡ<>м<EFBFBD><D0BC><EFBFBD>6<EFBFBD><36><EFBFBD><EFBFBD><EFBFBD>ݽ<EFBFBD><DDBD><EFBFBD>ƽ<EFBFBD><C6BD>
	for(i=2;i<8;i++)
	{
	  temp+=buf[i];
	}
	
	tpad_default_val=temp/6;	
	/* printf<74><66>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>ֵTPAD_GATE_VAL<41><4C><EFBFBD><EFBFBD>Ӧ<EFBFBD>ù<EFBFBD><C3B9><EFBFBD><EFBFBD><EFBFBD>Ӧע<D3A6>͵<EFBFBD> */
	//printf("tpad_default_val:%d\r\n",tpad_default_val);	
	
	//<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>TPAD_ARR_MAX_VAL/2<><32><EFBFBD><EFBFBD>ֵ,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>!
	if(tpad_default_val>TPAD_ARR_MAX_VAL/2)
	{
		return 1;
	}
	
	return 0;		     	    					   
}

/**
  * @brief  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɨ<EFBFBD>躯<EFBFBD><EFBFBD>
  * @note   <EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>ص<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡֵ
  * @param  mode:0,<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD>α<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>);1,֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һֱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
  * @retval 0,û<EFBFBD>а<EFBFBD><EFBFBD><EFBFBD>;1,<EFBFBD>а<EFBFBD><EFBFBD><EFBFBD>;
  */
uint8_t TPAD_Scan(uint8_t mode)
{
	//0,<2C><><EFBFBD>Կ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>;>0,<2C><><EFBFBD><EFBFBD><EFBFBD>ܿ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>	
	static uint8_t keyen=0;
	//ɨ<><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	uint8_t res=0;
	//Ĭ<>ϲ<EFBFBD><CFB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ3<CEAA><33>
	uint8_t sample=3;	
  //<2F><><EFBFBD><EFBFBD>ֵ	
	uint16_t rval;
	
	if(mode)
	{
		//֧<><D6A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ6<CEAA><36>
		sample=6;	
		//֧<><D6A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>	
		keyen=0;	  
	}	
	/* <20><>ȡ<EFBFBD><C8A1>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD>ֵ(<28><><EFBFBD><EFBFBD> sample <20><>ɨ<EFBFBD><C9A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ) */
	rval=TPAD_Get_MaxVal(sample); 	
	/* printf<74><66>ӡ<EFBFBD><D3A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>ֵTPAD_GATE_VAL<41><4C><EFBFBD><EFBFBD>Ӧ<EFBFBD>ù<EFBFBD><C3B9><EFBFBD><EFBFBD><EFBFBD>Ӧע<D3A6>͵<EFBFBD> */
//	printf("scan_rval=%d\n",rval);
	
	//<2F><><EFBFBD><EFBFBD>tpad_default_val+TPAD_GATE_VAL,<2C><>С<EFBFBD><D0A1>10<31><30>tpad_default_val,<2C><><EFBFBD><EFBFBD>Ч
	if(rval>(tpad_default_val+TPAD_GATE_VAL)&&rval<(10*tpad_default_val))
	{			
    //keyen==0,<2C><>Ч 		
		if(keyen==0)
		{
			res=1;		 
		}			
		keyen=3;				//<2F><><EFBFBD><EFBFBD>Ҫ<EFBFBD>ٹ<EFBFBD>3<EFBFBD><33>֮<EFBFBD><D6AE><EFBFBD><EFBFBD><EFBFBD>ܰ<EFBFBD><DCB0><EFBFBD><EFBFBD><EFBFBD>Ч   
	}
	
	if(keyen)
	{
		keyen--;		
	}		
	return res;
}	 
/*********************************************END OF FILE**********************/