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)
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key.hファイル
key.cファイル
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;
}
}