04.按键控制数码管

  • 一、引脚配置
  • 二、编写代码
    • 1.r_cg_userdefine.h
    • 2.r_cg_timer_user.h
    • 3.my_key.h
    • 4.my_key.c
    • 5.r_main.c
  • 三、烧录程序
  • 四、附录

  按键的原理十分简单，注意去抖就行。本案例不采用延时去抖，也不采用定时器去抖。而是在while循环里定义一个可随时修改的变量，根据程序运行一次所需要的时间进行合理的去抖。本实验所实现的案例如下：
  开发板上一共5个按键，分别是KEY1-KEY5，功能分别如下：

KEY1：短按时，数码管每秒+1；长按时，数码管每秒-1；快速双击时，数码管停止不动。
KEY2：短按时，数码管+1；
KEY3：短按时，数码管-1；
KEY4：短按时，数码管清零，并不进行每秒更新；
KEY5：短按时，数码管清零，若原先处于每秒更新状态，则继续每秒±1。

一、引脚配置

  根据原理图进行相关引脚配置即可，以下按键引脚均设置为输入模式，定时器选择通道1定时50ms。

二、编写代码

1.r_cg_userdefine.h

/***********************************************************************************************************************
* DISCLAIMER
* This software is supplied by Renesas Electronics Corporation and is only intended for use with Renesas products.
* No other uses are authorized. This software is owned by Renesas Electronics Corporation and is protected under all
* applicable laws, including copyright laws.
* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING THIS SOFTWARE, WHETHER EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT.  ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY
* LAW, NEITHER RENESAS ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE FOR ANY DIRECT,
* INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR
* ITS AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* Renesas reserves the right, without notice, to make changes to this software and to discontinue the availability
* of this software. By using this software, you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer
*
* Copyright (C) 2011, 2021 Renesas Electronics Corporation. All rights reserved.
***********************************************************************************************************************//***********************************************************************************************************************
* File Name    : r_cg_userdefine.h
* Version      : CodeGenerator for RL78/G14 V2.05.06.02 [08 Nov 2021]
* Device(s)    : R5F104FE
* Tool-Chain   : CCRL
* Description  : This file includes user definition.
* Creation Date: 2022/6/7
***********************************************************************************************************************/#ifndef _USER_DEF_H
#define _USER_DEF_H/***********************************************************************************************************************
User definitions
***********************************************************************************************************************//* Start user code for function. Do not edit comment generated here */
#define COM1    P6_bit.no3
#define COM2    P7_bit.no0
#define COM3    P7_bit.no1
#define COM4    P7_bit.no2
#define COM5    P7_bit.no3
#define SEG_A   P3_bit.no1
#define SEG_B   P3_bit.no0
#define SEG_C   P14_bit.no6
#define SEG_D   P1_bit.no3
#define SEG_E   P1_bit.no4
#define SEG_F   P1_bit.no5
#define SEG_G   P1_bit.no6
#define SEG_DP  P1_bit.no7#define KEY1    P12_bit.no1
#define KEY2    P12_bit.no2
#define KEY3    P13_bit.no7
#define KEY4    P12_bit.no3
#define KEY5    P12_bit.no4
//void key_scan(void);//KEY1-KEY5?¨¬2a
/* End user code. Do not edit comment generated here */
#endif

2.r_cg_timer_user.h

/***********************************************************************************************************************
* DISCLAIMER
* This software is supplied by Renesas Electronics Corporation and is only intended for use with Renesas products.
* No other uses are authorized. This software is owned by Renesas Electronics Corporation and is protected under all
* applicable laws, including copyright laws.
* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING THIS SOFTWARE, WHETHER EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT.  ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY
* LAW, NEITHER RENESAS ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE FOR ANY DIRECT,
* INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR
* ITS AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* Renesas reserves the right, without notice, to make changes to this software and to discontinue the availability
* of this software. By using this software, you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer
*
* Copyright (C) 2011, 2021 Renesas Electronics Corporation. All rights reserved.
***********************************************************************************************************************//***********************************************************************************************************************
* File Name    : r_cg_timer_user.c
* Version      : CodeGenerator for RL78/G14 V2.05.06.02 [08 Nov 2021]
* Device(s)    : R5F104FE
* Tool-Chain   : CCRL
* Description  : This file implements device driver for TAU module.
* Creation Date: 2022/6/7
***********************************************************************************************************************//***********************************************************************************************************************
Includes
***********************************************************************************************************************/
#include "r_cg_macrodriver.h"
#include "r_cg_timer.h"
/* Start user code for include. Do not edit comment generated here */
/* End user code. Do not edit comment generated here */
#include "r_cg_userdefine.h"/***********************************************************************************************************************
Pragma directive
***********************************************************************************************************************/
#pragma interrupt r_tau0_channel0_interrupt(vect=INTTM00)
/* Start user code for pragma. Do not edit comment generated here */
uint16_t time_count0=0;//timer count
uint8_t display_buffer[4]={1,2,3,4,};//display num
uint8_t  display_count0=0;//
/* End user code. Do not edit comment generated here *//***********************************************************************************************************************
Global variables and functions
***********************************************************************************************************************/
/* Start user code for global. Do not edit comment generated here *//*************************************************************Function:Display one digit*************************************************************/void display_7seg(unsigned char led_digit){unsigned char digit_bak;digit_bak = led_digit;switch(digit_bak){case 0:     //display 0SEG_A=1;SEG_B=1;SEG_C=1;SEG_D=1;SEG_E=1;SEG_F=1;SEG_G=0;break;case 1:       //display 1SEG_A=0;SEG_B=1;SEG_C=1;SEG_D=0;SEG_E=0;SEG_F=0;SEG_G=0;break;case 2:     //display 2SEG_A=1;SEG_B=1;SEG_C=0;SEG_D=1;SEG_E=1;SEG_F=0;SEG_G=1;break;case 3:    //display 3SEG_A=1;SEG_B=1;SEG_C=1;SEG_D=1;SEG_E=0;SEG_F=0;SEG_G=1;break;case 4:     //display 4SEG_A=0;SEG_B=1;SEG_C=1;SEG_D=0;SEG_E=0;SEG_F=1;SEG_G=1;break;case 5:     //display 5SEG_A=1;SEG_B=0;SEG_C=1;SEG_D=1;SEG_E=0;SEG_F=1;SEG_G=1;break;case 6:     //display 6SEG_A=1;SEG_B=0;SEG_C=1;SEG_D=1;SEG_E=1;SEG_F=1;SEG_G=1;   break;case 7:      //display 7SEG_A=1;SEG_B=1;SEG_C=1;SEG_D=0;SEG_E=0;SEG_F=0;SEG_G=0;   break;case 8:     //display 8SEG_A=1;SEG_B=1;SEG_C=1;SEG_D=1;SEG_E=1;SEG_F=1;SEG_G=1;    break;case 9:    //display 9SEG_A=1;SEG_B=1;SEG_C=1;SEG_D=1;SEG_E=0;SEG_F=1;SEG_G=1; break;case 10://off display SEG_A = 0;SEG_B = 0;SEG_C = 0;SEG_D = 0;SEG_E = 0;SEG_F = 0;SEG_G = 0;break;case 11://display ESEG_A=1;SEG_B=0;SEG_C=0;SEG_D=1;SEG_E=1;SEG_F=1;SEG_G=1;   break;//case 12://display G0 G1 SEG_A = 0;SEG_B = 0;SEG_C = 0;SEG_D = 0;SEG_E = 0;SEG_F = 0;SEG_G = 1;break;//case 13://display bSEG_A = 0;SEG_B = 0;SEG_C = 1;SEG_D = 1;SEG_E = 1;SEG_F = 1;SEG_G = 1;break;     default:NOP();//NOP();//break;}
}void display_digit_led(void)
{display_count0+=1;//COM5 = 0;switch(display_count0%4+1){case 1:display_7seg(display_buffer[0]);//COM1 = 0;COM2 = 1;COM3 = 1;COM4 = 1;SEG_DP=0;break;//case 2:display_7seg(display_buffer[1]);//           COM1 = 1;COM2 = 0;COM3 = 1;COM4 = 1;////SEG_DP=1;break;//case 3:display_7seg(display_buffer[2]);//         COM1 = 1;COM2 = 1;COM3 = 0;COM4 = 1;    SEG_DP=0;//off clock charbreak;//case 4:display_7seg(display_buffer[3]);//                         COM1 = 1;COM2 = 1;COM3 = 1;COM4 = 0;                break;//}
}void display_one_led(int id)
{COM5 = 0;switch(id%4+1){case 1:display_7seg(display_buffer[0]);//COM1 = 0;COM2 = 1;COM3 = 1;COM4 = 1;SEG_DP=0;break;//case 2:display_7seg(display_buffer[1]);//         COM1 = 1;COM2 = 0;COM3 = 1;COM4 = 1;////SEG_DP=1;break;//case 3:display_7seg(display_buffer[2]);//         COM1 = 1;COM2 = 1;COM3 = 0;COM4 = 1;    SEG_DP=0;//off clock charbreak;//case 4:display_7seg(display_buffer[3]);//                         COM1 = 1;COM2 = 1;COM3 = 1;COM4 = 0;                break;//}
}void set_led_num(int num)
{display_buffer[0]=num/1000;display_buffer[1]=num%1000/100;display_buffer[2]=num%1000%100/10;display_buffer[3]=num%1000%100%10;
}void display_LED(void){static int count=0;if(++count>10){count=0;   display_digit_led();//display_one_led(2);}}
/* End user code. Do not edit comment generated here *//***********************************************************************************************************************
* Function Name: r_tau0_channel0_interrupt
* Description  : This function is INTTM00 interrupt service routine.
* Arguments    : None
* Return Value : None
***********************************************************************************************************************/
static void __near r_tau0_channel0_interrupt(void)
{/* Start user code. Do not edit comment generated here */time_count0+=1;/* End user code. Do not edit comment generated here */
}/* Start user code for adding. Do not edit comment generated here */
/* End user code. Do not edit comment generated here */

3.my_key.h

#ifndef _MY_KEY_H
#define _MY_KEY_H#include "iodefine.h"
#include "r_cg_userdefine.h"#define KEY_NO 0
#define KEY_S  1
#define KEY_M  2
#define KEY_L  3#define key KEY1
#define key2 KEY2
#define key3 KEY3
#define key4 KEY4
#define key5 KEY5#endif

4.my_key.c

#include "my_key.h"
#include "r_cg_timer.h"unsigned char KEY_FLAG=KEY_NO;
unsigned char KEY2_FLAG=KEY_NO;
unsigned char KEY3_FLAG=KEY_NO;
unsigned char KEY4_FLAG=KEY_NO;
unsigned char KEY5_FLAG=KEY_NO;#define time_interval 400void KEYx_SCAN_SML(void)
{static unsigned char Mode=0;static unsigned int count1=0;static unsigned int count2=0;static unsigned char Flag=0;switch(Mode){case 0: {if(!key)//状态0，检测到按键被按下{Mode=1;//跳转到状态1}}break;case 1:{count1++;if(count1>time_interval*1)//去抖10ms，可以修改具体count1值{count1=0;if(key)//按键释放{Mode=0;//回到状态0，重新检测}else  //按键确实被按下{Mode=2;//进入状态2，开始状态2测量时间}}}break;case 2:{count1++;if(count1>time_interval*120)//按下的时间大于2s，count1值可修改{count1=0;Mode=4;}else{count2=count1;if(key)    //如果按键释放{Mode=3;//跳转到状态3Flag++;//标志增加}}}break;case 3:{count2++;if(count2>time_interval*60)//如果时间很久了,3000可修改{count2=0;Mode=4; //跳转到状态4}else{if((count2-count1)>time_interval*5)//如果小于上面的时间,并且大于上面的时间{if(!key)//第二次按下{Flag++;}}}}break;case 4:{if(key)//如果已经释放了{Mode=0;//状态清0if(Flag>1)//标志位增加过，说明双击了{Flag=0;KEY_FLAG=KEY_M; //标志位清零，赋值 双击}else{Flag=0;KEY_FLAG=KEY_S; //标志位清零，赋值 单击}}else{Flag=0;//标志位清零，赋值 长按KEY_FLAG=KEY_L;Mode=5;}}break;case 5:{if(key) //如果按键被释放{Mode=0;//状态清零}}break;}
}#define key_interval 3000
#define KEY_ALL ((KEY2==1)&&(KEY3==1)&&(KEY4==1)&&(KEY5==1))void KEYs_SCAN(void)
{static unsigned char Mode=0;static unsigned int count=0;switch(Mode){case 0: {if(!KEY_ALL)//状态0，检测到按键被按下{Mode=1;//跳转到状态1}}break;case 1:{count++;if(count>key_interval)//去抖10ms，可以修改具体key_interval值{count=0;Mode=0;if(KEY2==1)//按键释放{//KEY2_FLAG=KEY_NO;}else  //按键确实被按下{KEY2_FLAG=KEY_S;}if(KEY3==1)//按键释放{//KEY3_FLAG=KEY_NO;}else  //按键确实被按下{KEY3_FLAG=KEY_S;}if(KEY4==1)//按键释放{//KEY4_FLAG=KEY_NO;}else  //按键确实被按下{KEY4_FLAG=KEY_S;}if(KEY5==1)//按键释放{//KEY5_FLAG=KEY_NO;}else  //按键确实被按下{KEY5_FLAG=KEY_S;}}}break;}
}

5.r_main.c

/***********************************************************************************************************************
* DISCLAIMER
* This software is supplied by Renesas Electronics Corporation and is only intended for use with Renesas products.
* No other uses are authorized. This software is owned by Renesas Electronics Corporation and is protected under all
* applicable laws, including copyright laws.
* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING THIS SOFTWARE, WHETHER EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NON-INFRINGEMENT.  ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY
* LAW, NEITHER RENESAS ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE FOR ANY DIRECT,
* INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR
* ITS AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* Renesas reserves the right, without notice, to make changes to this software and to discontinue the availability
* of this software. By using this software, you agree to the additional terms and conditions found by accessing the
* following link:
* http://www.renesas.com/disclaimer
*
* Copyright (C) 2011, 2021 Renesas Electronics Corporation. All rights reserved.
***********************************************************************************************************************//***********************************************************************************************************************
* File Name    : r_main.c
* Version      : CodeGenerator for RL78/G14 V2.05.06.02 [08 Nov 2021]
* Device(s)    : R5F104FE
* Tool-Chain   : CCRL
* Description  : This file implements main function.
* Creation Date: 2022/6/7
***********************************************************************************************************************//***********************************************************************************************************************
Includes
***********************************************************************************************************************/
#include "r_cg_macrodriver.h"
#include "r_cg_cgc.h"
#include "r_cg_port.h"
#include "r_cg_timer.h"
#include "r_cg_wdt.h"
/* Start user code for include. Do not edit comment generated here */
#include "my_key.h"
/* End user code. Do not edit comment generated here */
#include "r_cg_userdefine.h"/***********************************************************************************************************************
Pragma directive
***********************************************************************************************************************/
/* Start user code for pragma. Do not edit comment generated here */
/* End user code. Do not edit comment generated here *//***********************************************************************************************************************
Global variables and functions
***********************************************************************************************************************/
/* Start user code for global. Do not edit comment generated here */
extern void hdwinit(void);//
extern display_7seg(unsigned char led_digit);
extern void display_LED(void);
extern void set_led_num(int num);
extern void KEYx_SCAN_SML(void);
extern void KEYs_SCAN(void);
extern unsigned char KEY_FLAG;
extern unsigned char KEY2_FLAG;
extern unsigned char KEY3_FLAG;
extern unsigned char KEY4_FLAG;
extern unsigned char KEY5_FLAG;
extern uint16_t time_count0;uint16_t i=0;
/* End user code. Do not edit comment generated here */
void R_MAIN_UserInit(void);/***********************************************************************************************************************
* Function Name: main
* Description  : This function implements main function.
* Arguments    : None
* Return Value : None
***********************************************************************************************************************/
void main(void)
{R_MAIN_UserInit();/* Start user code. Do not edit comment generated here */set_led_num(0);while (1U){R_WDT_Restart();KEYx_SCAN_SML();KEYs_SCAN();set_led_num(i);//set_led_num(KEY_FLAG);if(KEY4_FLAG==KEY_S){KEY_FLAG=KEY_NO;KEY4_FLAG=KEY_NO;i=0;}else if(KEY5_FLAG==KEY_S)    {i=0;KEY5_FLAG=KEY_NO;}else if(KEY2_FLAG==KEY_S)    {i++;KEY2_FLAG=KEY_NO;}else if(KEY3_FLAG==KEY_S){i--;KEY3_FLAG=KEY_NO;    }else if(KEY_FLAG==KEY_S){if(time_count0>20){time_count0=0;i++;i=i%10000;}}else if(KEY_FLAG==KEY_L){if(time_count0>20){time_count0=0;i--;i=i%10000;}}else{} display_LED();;}/* End user code. Do not edit comment generated here */
}/***********************************************************************************************************************
* Function Name: R_MAIN_UserInit
* Description  : This function adds user code before implementing main function.
* Arguments    : None
* Return Value : None
***********************************************************************************************************************/
void R_MAIN_UserInit(void)
{/* Start user code. Do not edit comment generated here */hdwinit();//R_TAU0_Channel0_Start();//EI();/* End user code. Do not edit comment generated here */
}/* Start user code for adding. Do not edit comment generated here */
/* End user code. Do not edit comment generated here */

三、烧录程序

  烧录程序，逐一按键查看效果（文件太大上传不了）。

四、附录

按键的短按、长按、双击等功能的实现参考的这个图：

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