STM 32マトリックスキーボード4*4スキャンプログラム(遅延なくブレ止め、テスト安定)

4584 ワード

ダイレクトソース
key.hファイル
#ifndef __KEY_H
#define __KEY_H	 
#include "sys.h"



#define Read_Lie1 GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_0)
#define Read_Lie2 GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_1)
#define Read_Lie3 GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_2)
#define Read_Lie4 GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_3)



void KEY_Init(void);//IO 
u8 KEY_Scan(void);  	// 	
void Key_Text(void);
#endif

key.cファイル
#include "key.h"
#include "sys.h" 
#include "delay.h"
#include "usart.h"
#include "lcd.h"


u8 tem;


// 
void KEY_Init(void) 
{ 
 	GPIO_InitTypeDef GPIO_InitStructure;
 
 	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC|RCC_AHB1Periph_GPIOE,ENABLE);

	GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; 
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
 	GPIO_Init(GPIOC, &GPIO_InitStructure);


	GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;   
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_Init(GPIOE, &GPIO_InitStructure);

}


u8 KEY_Scan(void)// 
{	
	static u8 key_flag1=1,key_flag2=1,key_flag3=1,key_flag4=1;     // 
	u8 KeyVal;
	
	
  GPIO_Write(GPIOE,(( GPIOE->ODR & 0xFFC3 )|0x0004));	//0001
	if(key_flag1&&(Read_Lie1==1||Read_Lie2==1||Read_Lie3==1||Read_Lie4==1))
	{
		 key_flag1=0;
		     if (Read_Lie1==1){ KeyVal= 4; printf("key:%d\r
",KeyVal);} else if (Read_Lie2==1) {KeyVal= 8; printf("key:%d\r
",KeyVal);} else if (Read_Lie3==1) {KeyVal= 12; printf("key:%d\r
",KeyVal);} else if (Read_Lie4==1) {KeyVal= 16; printf("key:%d\r
",KeyVal);} } else if(Read_Lie1==0&&Read_Lie2==0&&Read_Lie3==0&&Read_Lie4==0)key_flag1=1; else return 0; GPIO_Write(GPIOE,(( GPIOE->ODR & 0xFFC3 )|0x0008));//0010 if(key_flag2&&(Read_Lie1==1||Read_Lie2==1||Read_Lie3==1||Read_Lie4==1)) { key_flag2=0; if (Read_Lie1==1){ KeyVal= 3; printf("key:%d\r
",KeyVal);} else if (Read_Lie2==1) {KeyVal= 7; printf("key:%d\r
",KeyVal);} else if (Read_Lie3==1) {KeyVal= 11; printf("key:%d\r
",KeyVal);} else if (Read_Lie4==1) {KeyVal= 15; printf("key:%d\r
",KeyVal);} } else if(Read_Lie1==0&&Read_Lie2==0&&Read_Lie3==0&&Read_Lie4==0)key_flag2=1; else return 0; GPIO_Write(GPIOE,(( GPIOE->ODR & 0xFFC3 )|0x0010));//0100 if(key_flag3&&(Read_Lie1==1||Read_Lie2==1||Read_Lie3==1||Read_Lie4==1)) { key_flag3=0; if (Read_Lie1==1){ KeyVal= 2; printf("key:%d\r
",KeyVal);} else if (Read_Lie2==1) {KeyVal= 6; printf("key:%d\r
",KeyVal);} else if (Read_Lie3==1) {KeyVal= 10; printf("key:%d\r
",KeyVal);} else if (Read_Lie4==1) {KeyVal= 14; printf("key:%d\r
",KeyVal);} } else if(Read_Lie1==0&&Read_Lie2==0&&Read_Lie3==0&&Read_Lie4==0)key_flag3=1; else return 0; GPIO_Write(GPIOE,(( GPIOE->ODR & 0xFFC3 )|0x0020));//1000 if(key_flag4&&(Read_Lie1==1||Read_Lie2==1||Read_Lie3==1||Read_Lie4==1)) { key_flag4=0; if (Read_Lie1==1){ KeyVal= 1; printf("key:%d\r
",KeyVal);} else if (Read_Lie2==1) {KeyVal= 5; printf("key:%d\r
",KeyVal);} else if (Read_Lie3==1) {KeyVal= 9; printf("key:%d\r
",KeyVal);} else if (Read_Lie4==1) {KeyVal= 13; printf("key:%d\r
",KeyVal);} } else if(Read_Lie1==0 &&Read_Lie2==0 &&Read_Lie3==0 &&Read_Lie4==0 )key_flag4=1; else return 0; return KeyVal; } void Key_Text(void) { switch(tem) { case 1:LCD_Clear(WHITE); break; case 2:LCD_Clear(BLACK); break; case 3:LCD_Clear(BLUE); break; case 4:LCD_Clear(RED); break; case 5:LCD_Clear(MAGENTA); break; case 6:LCD_Clear(GREEN); break; case 7:LCD_Clear(CYAN); break; case 8:LCD_Clear(YELLOW); break; case 9:LCD_Clear(BRRED); break; case 10:LCD_Clear(GRAY); break; case 11:LCD_Clear(LGRAY); break; case 12:LCD_Clear(BROWN); break; case 13:LCD_Clear(DARKBLUE); break; case 14:LCD_Clear(LIGHTBLUE); break; case 15:LCD_Clear(LIGHTGREEN); break; case 16:LCD_Clear(RED); break; } }