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   源码介绍

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STM32_GY_39光照度计应用示例

#include <color.h>
#include <delay.h>
#include <oled.h>

u8 Rgena,Ggena,Bgena;
u16 Ramount,Gamount,Bamount;
u16 amount;

//float Max=0,Min=0;
//float Rhsv=0,Ghsv=0,Bhsv=0;
//float H=0,S=0,V=0;
u8 R=0x00,G=0x00,B=0x00;
//u16 RGB=0x0000;

void Color_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStruct;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
	
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_8|GPIO_Pin_9;
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB,&GPIO_InitStruct);
	
	GPIO_SetBits(GPIOB, GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_8|GPIO_Pin_9);

}
//*************外部中断线7***************/
void EXTIX_Init(void)
{
	GPIO_InitTypeDef GPIO_InitStruct;
	EXTI_InitTypeDef EXTI_InitStruct;
	NVIC_InitTypeDef NVIC_InitStruct;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
	
	GPIO_InitStruct.GPIO_Pin = GPIO_Pin_7;
	GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AIN;
	GPIO_Init(GPIOB,&GPIO_InitStruct);
	GPIO_SetBits(GPIOB, GPIO_Pin_7);
	
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource7);
	
	EXTI_InitStruct.EXTI_Line = EXTI_Line7;
	EXTI_InitStruct.EXTI_LineCmd = ENABLE;
	EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
	EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Falling;
	EXTI_Init(&EXTI_InitStruct);
	
	NVIC_InitStruct.NVIC_IRQChannel = EXTI9_5_IRQn;
	NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
	NVIC_Init(&NVIC_InitStruct);
}

void EXTI9_5_IRQHandler(void)
{
	amount  ;
	EXTI_ClearITPendingBit(EXTI_Line7);
}
/*******************************************
*
*		  白平衡
*
*******************************************/
void whitebalance(void)
{
	EXTI9_5_IRQHandler();		 //外部中断初始化
	S2=0;S3=0;//红色通道
	amount=0;			 //开始计数
	delay_ms(10);
	Rgena = amount;   //求出红色因子      
	amount=0;
//----------------------------------
	S2=1;S3=1;//绿色通道
	amount=0;
	delay_ms(10);
	Ggena = amount;	 //求出绿色因子
	amount=0;
//----------------------------------
	S2=0;S3=1;//蓝色通道
	amount=0;
	delay_ms(10);
	Bgena = amount;	  //求出蓝色因子
	amount=0;
	S2=1;S3=0;//关闭通道  	  
}
//********************************************
//读取RGB值
//********************************************
u16 Color_RED(void)
{
	S2=0;S3=0;
	amount=0;
	delay_ms(10);
	Ramount=(u32) amount*255/Rgena;	 //取R值
	if(Ramount>255) Ramount = 255;
	return Ramount;
//	amount=0;
}

u16 Color_GREEN(void)
{
	S2=1;S3=1;
	amount=0;
	delay_ms(10);
	Gamount=(u32) amount*255/Ggena;	//取G值
	if(Gamount>255) Gamount = 255;
	return Gamount;
//	amount=0;
}

u16 Color_BLUE(void)
{
	S2=0;S3=1;
	amount=0;
	delay_ms(10);
	Bamount=(u32) amount*255/Bgena;//去B值
	if(Bamount>255) Bamount = 255;
	return Bamount;
//	amount=0;
} 

void Color_HSV(void)
{
	//=================================================================================
		R = Color_RED();
		G = Color_GREEN();	//取RGB值
		B = Color_BLUE();	 
//================================================================================
//		Rhsv = (float) R/25/10;
//		Ghsv = (float) G/25/10;	 //RGB转换成0，1.
//		Bhsv = (float) B/25/10;

////=================================================================================
////RGB转HSV算法
///********************************************************/
//		Max = (Rhsv>Ghsv)?Rhsv:Ghsv;				
//		Max = (Max>Bhsv)?Max:Bhsv;		//取RGB最大值
//		Min = (Rhsv<Ghsv)?Rhsv:Ghsv;				
//		Min = (Min<Bhsv)?Min:Bhsv;		//去RGB最小值
//																
//		if(Rhsv==Max) H = (Ghsv-Bhsv)/(Max-Min);	
//		if(Ghsv==Max) H = 2 (Bhsv-Rhsv)/(Max-Min);	
//		if(Bhsv==Max) H = 4 (Rhsv-Ghsv)/(Max-Min);	
//		H =(int) (H*60);									                
//		if(H<0) H = H 360;													 
//																		   	  
//		V = (Rhsv>Ghsv)?Rhsv:Ghsv;											
//		V = (V>Bhsv)?V:Bhsv;		//取V的数值									
//																				 
//		S = (Max-Min)/Max;			//取S的数值								
//																				 
//		V = (int) (V*100);															
//		S = (int) (S*100);															 
//======================================================================================================
		OLED_ShowNum(0,0,R,5,12);  //显示一个数字
		OLED_ShowNum(0,12,G,5,12);  //显示一个数字
		OLED_ShowNum(0,24,B,5,12);  //显示一个数字
//		OLED_ShowNum(0,36,H,5,12);  //显示一个数字
//		OLED_ShowNum(0,48,V,5,12);  //显示一个数字
//		OLED_ShowNum(0,50,S,5,12);  //显示一个数字
		delay_ms(50);
}