Smart_WaterHeater/stm32/HARDWARE/KEY/key.c

/******************** (C) COPYRIGHT 2013 CEPARK<EFBFBD>๦<EFBFBD>ܿ<EFBFBD><EFBFBD><EFBFBD>ѧϰ<EFBFBD><EFBFBD>********************
 * <EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>  <EFBFBD><EFBFBD>key4x4.c
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>    <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>        
 * ʵ<EFBFBD><EFBFBD>ƽ̨<EFBFBD><EFBFBD>CEPARK<EFBFBD>๦<EFBFBD>ܿ<EFBFBD><EFBFBD><EFBFBD>ѧϰ<EFBFBD><EFBFBD>
 * Ӳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӣ<EFBFBD>-------------------------
 *          | PB8  - H4          |
 *          | PB9  - H3			 |
 *          | PB10 - H2          |
 *          | PB11 - H1		     |
 *          | PB12 - L4          |
 *          | PB13 - L3		     |
 *          | PB14 - L2          |
 *          | PB15 - L1			 |
 *           -------------------------
 * <EFBFBD><EFBFBD>汾  <EFBFBD><EFBFBD>ST3.5.0
**********************************************************************************/

#include "key.h" 
#include "delay.h" 

 /*
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Key_GPIO_Config
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>  <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ð<EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>I/O<EFBFBD><EFBFBD>
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 * <EFBFBD><EFBFBD><EFBFBD>  <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
void Key4x4_GPIO_Config(void)
{
  	GPIO_InitTypeDef GPIO_InitStructure;
  	
  	/*<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˿ڵ<EFBFBD>ʱ<EFBFBD><EFBFBD>*/
  	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOA,ENABLE);

		GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 ; 
		GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; 
		GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; 
		GPIO_Init(GPIOA, &GPIO_InitStructure);

  	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_10 | GPIO_Pin_11;	
  	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;       
  	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  	GPIO_Init(GPIOB, &GPIO_InitStructure);
}


u8 Key_Scan(void)
{
	u16 temp;
	u8 ucBackValue=16;
	//====ɨ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>==========
	
	PBout(1) = 0;
	PBout(0) = 1;
	PBout(10) = 1;
	PBout(11) = 1;
	
	temp=GPIO_ReadInputData(GPIOA); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵõ<EFBFBD><EFBFBD><EFBFBD>ֵ
	
	temp=temp&0x003c;    //<EFBFBD><EFBFBD><EFBFBD>ε<EFBFBD>4λ
	if (temp!=0x003c)      //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4λ<EFBFBD><EFBFBD>ȫ<EFBFBD><EFBFBD>1
	{ 
		delay_ms(20);      // <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>
		temp=GPIO_ReadInputData(GPIOA); 
		temp=temp&0x003c;
		if (temp!=0x003c)     //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٴθ<EFBFBD>4λȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȫ1
		{ 
			temp=GPIO_ReadInputData(GPIOA)&0x003c; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴ΰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
			switch(temp)
			{ 
				case 0x0038:
				ucBackValue = 12;break;
				case 0x0034:
				ucBackValue = 13;break;
				case 0x002c:
				ucBackValue = 14;break;
				case 0x001c:
				ucBackValue = 15;break;
				default:break;
			}
			while(temp!=0x003c)   //<EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ſ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>
			{ 
				temp=GPIO_ReadInputData(GPIOA); 
				temp=temp&0x003c;
			}
		}
	}

	//====<EFBFBD>ڶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0==========
	PBout(1) = 1;
	PBout(0) = 0;
	PBout(10) = 1;
	PBout(11) = 1;
	
	temp=GPIO_ReadInputData(GPIOA); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵõ<EFBFBD><EFBFBD><EFBFBD>ֵ
	temp=temp&0x003c;    //<EFBFBD><EFBFBD><EFBFBD>ε<EFBFBD>4λ
	if (temp!=0x003c)      //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4λ<EFBFBD><EFBFBD>ȫ<EFBFBD><EFBFBD>1
	{ 
		delay_ms(20);      // <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>
		temp=GPIO_ReadInputData(GPIOA); 
		temp=temp&0x003c;
		if (temp!=0x003c)     //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٴθ<EFBFBD>4λȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȫ1
		{ 
			temp=GPIO_ReadInputData(GPIOA)&0x003c; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴ΰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
			switch(temp)
			{ 
				case 0x0038:
					ucBackValue = 3; break;
				case 0x0034:
					ucBackValue = 6; break;
				case 0x002c:
					ucBackValue = 9; break;
				case 0x001c:
					ucBackValue = 11; break;
				default:break;
		}
			while(temp!=0x003c)   //<EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ſ<EFBFBD>
			{ 
				temp=GPIO_ReadInputData(GPIOA); 
				temp=temp&0x003c;
			}
		}
	}
	//====<EFBFBD><EFBFBD>3<EFBFBD><EFBFBD><EFBFBD><EFBFBD>0==========
	
	PBout(1) = 1;
	PBout(0) = 1;
	PBout(10) = 0;
	PBout(11) = 1;
	
	temp=GPIO_ReadInputData(GPIOA); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵõ<EFBFBD><EFBFBD><EFBFBD>ֵ
	temp=temp&0x003c;    //<EFBFBD><EFBFBD><EFBFBD>ε<EFBFBD>4λ
	if (temp!=0x003c)      //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4λ<EFBFBD><EFBFBD>ȫ<EFBFBD><EFBFBD>1
	{ 
		delay_ms(20);      // <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>
		temp=GPIO_ReadInputData(GPIOA); 
		temp=temp&0x003c;
		if (temp!=0x003c)     //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٴθ<EFBFBD>4λȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȫ1
		{ 
			temp=GPIO_ReadInputData(GPIOA)&0x003c; //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˴ΰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
			switch(temp)
			{ 
				case 0x0038:
				ucBackValue = 1; break;
				case 0x0034:
				ucBackValue = 4; break;
				case 0x002c:
				ucBackValue = 7; break;
				case 0x001c:
				ucBackValue = 10; break;
				default:break;
		}
		while(temp!=0x003c)   //<EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ſ<EFBFBD>
		{ 
			temp=GPIO_ReadInputData(GPIOA); 
			temp=temp&0x003c;
		}
		}
	}
	//====<EFBFBD><EFBFBD>4<EFBFBD><EFBFBD><EFBFBD><EFBFBD>0==========
	PBout(1) = 1;
	PBout(0) = 1;
	PBout(10) = 1;
	PBout(11) = 0;
	
	temp=GPIO_ReadInputData(GPIOA); //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڵõ<EFBFBD><EFBFBD><EFBFBD>ֵ
	temp=temp&0x003c;    //<EFBFBD><EFBFBD><EFBFBD>ε<EFBFBD>4λ
	if (temp!=0x003c)      //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4λ<EFBFBD><EFBFBD>ȫ<EFBFBD><EFBFBD>1
	{ 
		delay_ms(20);       // <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>
		temp=GPIO_ReadInputData(GPIOA); 
		temp=temp&0x003c;
		if (temp!=0x003c)     //<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٴθ<EFBFBD>4λȷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȫ1
		{ 
			temp=GPIO_ReadInputData(GPIOA)&0x003c; 
			switch(temp)
			{ 
				case 0x0038:
				ucBackValue = 2; break;
				case 0x0034:
				ucBackValue = 5; break;
				case 0x002c:
				ucBackValue = 8; break;
				case 0x001c:
				ucBackValue = 0; break;
				default:break;
			}
			while(temp!=0x003c)   //<EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ſ<EFBFBD>
			{ 
				temp=GPIO_ReadInputData(GPIOA); 
				temp=temp&0x003c;
			}
		}
	}
	return ucBackValue;
}