電子密碼鎖設(shè)計(jì)

ID:315926 · 發(fā)表于 2018-4-25 09:06

/*****************************************************************************

** 電子密碼鎖設(shè)計(jì)

**文件名稱：main.c

**by 追夢(mèng)2011-5-12

**功能：支持3~20位的密碼設(shè)置，初始密碼為123456；若要重設(shè)密碼，需先輸入正確密碼開鎖。

** 正常顯示情況下，按下確認(rèn)鍵上鎖；按下密碼鍵，開始輸入密碼。

**接線：PE[0..3]----4*4鍵盤的行線，均用中斷方式，上拉輸入，下降沿觸發(fā)

** PE[4..7]----4*4鍵盤的列線，下拉輸入，在中斷內(nèi)臨時(shí)改為上拉輸入，用于讀鍵值

** PD[0..7]----LCD12864 D0~D7

** PD[13..15]--LCD12864 RS,RW,E

** PA.1 連接繼電器，低電平時(shí)合上，高電平時(shí)斷開相當(dāng)于開鎖與上鎖

*****************************************************************************/

#include "stm32f10x.h"

#include "LCD12864.h"

extern __IO uint16_t keyval;

extern __IO uint16_t keyflag;

uint16_t password[21]={1,2,3,4,5,6,'

}; //初始密碼為123456

uint16_t passwordtmp[21];

#define OPEN_DOOR GPIOA->BRR = GPIO_Pin_1

#define CLOSE_DOOR GPIOA->BSRR = GPIO_Pin_1

//數(shù)組中存放各個(gè)備份數(shù)據(jù)寄存器基于BKP基地址的偏移地址,用于存儲(chǔ)密碼

uint16_t BKPDataReg[21] =

{

BKP_DR2, BKP_DR3, BKP_DR4, BKP_DR5, BKP_DR6, BKP_DR7, BKP_DR8, BKP_DR9,

BKP_DR10,BKP_DR11, BKP_DR12, BKP_DR13, BKP_DR14, BKP_DR15,BKP_DR16,BKP_DR17,

BKP_DR18,BKP_DR19, BKP_DR20, BKP_DR21, BKP_DR22

};

/**

* 寫密碼到備份寄存器，掉電不丟失，電源復(fù)位不丟失

*/

void WritePasswordToBackupReg(uint16_t passwordarray[])

{

uint32_t index = 0;

/* 使能寫入BKP */

PWR_BackupAccessCmd(ENABLE);

/* 清除事件掛起位 pin Event(TE) */

BKP_ClearFlag();

for (index = 0;passwordarray[index]!='

; index++)

{ //偏移地址和數(shù)據(jù)

BKP_WriteBackupRegister(BKPDataReg[index],passwordarray[index]);

}

BKP_WriteBackupRegister(BKPDataReg[index], passwordarray[index]); //寫入密碼結(jié)尾符

}

/**

* 上電或復(fù)位后讀出備份區(qū)里保存的密碼

*/

void Load_Password(void)

{

uint32_t index =0;

for(index = 0; BKP_ReadBackupRegister(BKPDataReg[index])!='

; index++)

{

password[index]=BKP_ReadBackupRegister(BKPDataReg[index]);

}

password[index]='

;

}

/*************************************************************

**時(shí)鐘配置函數(shù) 系統(tǒng)時(shí)鐘為72MHz

*************************************************************/

void RCC_Configuration()

{

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC|\

RCC_APB2Periph_GPIOD| RCC_APB2Periph_GPIOE,ENABLE);//使能所有GPIO的時(shí)鐘

}

//GPIO配置函數(shù)

void GPIO_Configuration(void)

{

GPIO_InitTypeDefGPIO_InitStructure;//定義GPIO的模式設(shè)置結(jié)構(gòu)體變量

// PA1 接繼電器模擬開鎖功能

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;

GPIO_Init(GPIOA,&GPIO_InitStructure);

CLOSE_DOOR; // 初始鎖上

}

// 矩陣鍵盤接口配置

void KeyBoard_Config(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

// 行線上拉輸入

GPIO_InitStructure.GPIO_Pin = 0x000f;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOE, &GPIO_InitStructure);

// 列線下拉輸入

GPIO_InitStructure.GPIO_Pin = 0x00f0;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;

GPIO_Init(GPIOE, &GPIO_InitStructure);

}

// 列線轉(zhuǎn)換為浮空輸入

void KeyBoard_Conv(uint16_t GPIO_Pin)

{

GPIO_InitTypeDefGPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOE, &GPIO_InitStructure);

// 列線浮空輸入

GPIO_InitStructure.GPIO_Pin = 0x00f0;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOE, &GPIO_InitStructure);

}

/********************************************************************

*名稱: EXTI_Configuration

*功能：外部中斷配置函數(shù)

*說明：PE.0~PE.3 鍵盤中斷

*********************************************************************/

void EXTI_Configuration(void)

{

EXTI_InitTypeDefEXTI_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //復(fù)用功能使能

GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource0);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource1);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource2);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource3);

EXTI_ClearITPendingBit(EXTI_Line0); //清除掛起/請(qǐng)求標(biāo)志

EXTI_ClearITPendingBit(EXTI_Line1); //清除掛起/請(qǐng)求標(biāo)志

EXTI_ClearITPendingBit(EXTI_Line2);

EXTI_ClearITPendingBit(EXTI_Line3);

// PE.0

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //中斷模式

EXTI_InitStructure.EXTI_Trigger= EXTI_Trigger_Falling;

EXTI_InitStructure.EXTI_Line = EXTI_Line0;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);

// PE.1

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //中斷模式

EXTI_InitStructure.EXTI_Trigger= EXTI_Trigger_Falling;

EXTI_InitStructure.EXTI_Line = EXTI_Line1;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);

// PE.2

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //中斷模式

EXTI_InitStructure.EXTI_Trigger= EXTI_Trigger_Falling;

EXTI_InitStructure.EXTI_Line = EXTI_Line2;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);

// PE.3

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //中斷模式

EXTI_InitStructure.EXTI_Trigger= EXTI_Trigger_Falling;

EXTI_InitStructure.EXTI_Line = EXTI_Line3;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);

}

/********************************************************************

*名稱: NVIC_Configuration

*功能：中斷配置

*說明：PE.0~PE.3 鍵盤中斷,均為下降沿觸發(fā)

*********************************************************************/

void NVIC_Configuration(void)

{

NVIC_InitTypeDefNVIC_InitStructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

// PE.0

NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_Init(&NVIC_InitStructure);

// PE.1

NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;

NVIC_Init(&NVIC_InitStructure);

// PE.2

NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority= 1;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;

NVIC_Init(&NVIC_InitStructure);

// PE.3

NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;

NVIC_Init(&NVIC_InitStructure);

}

//延時(shí)nus

void delay_nus(unsigned long n)

{

unsigned longj;

while(n--)

{ j=15;

while(j--);

}

//延時(shí)nms

void delay_nms(unsigned long n)

{

while(n--)

delay_nus(1075);

}

/********************************************************************

*名稱: Change_Password

*功能：更改密碼

*說明：直到新密碼設(shè)定完成才退出此函數(shù)

*********************************************************************/

void Change_Password(void)

{

uint16_ti,index=0;

uint16_tflag=0;

uint16_tpasswordtmp2[21]={'

};

LCD_Clear();

delay_nms(2);

for(i=0;i<21;i++)

passwordtmp = '

;

LCD_Setpos_DispString(1,1,"請(qǐng)輸入新密碼:");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(1);

while(1)

{

keyflag = 0;

while(keyflag < 1)

{ }

keyflag = 0;

if(keyval<=9)

{

LCD_DispChar(keyval+'0');

delay_nms(1);

if(flag==0)

passwordtmp[index++] = keyval;

elsepasswordtmp2[index++] = keyval;

}

elseif((keyval == 'e')&&(flag == 0))

{

passwordtmp[index] = '

;

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)?jiān)俅屋斎胄旅艽a");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(1);

flag = 1;

index = 0;

}

elseif((keyval == 'e')&&(flag == 1))

{

for(i=0;passwordtmp!='

;i++)

{

if(passwordtmp != passwordtmp2)

{

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"兩次輸入密碼不同");

delay_nms(2);

LCD_Setpos_DispString(2,1,"請(qǐng)重新設(shè)定密碼!");

delay_nms(1000);

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)?jiān)俅屋斎胄旅艽a");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(1);

flag = 0;

index =0;

break;

}

if(passwordtmp=='

)

{

for(i=0;passwordtmp!='

;i++)

{

password = passwordtmp;

}

password = '

;

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(2,1,"新密碼設(shè)定成功！");

delay_nms(2);

LCD_Setpos_DispString(3,1,"請(qǐng)牢記新密碼！");

delay_nms(1);

WritePasswordToBackupReg(password); //保存新密碼

delay_nms(3000);

break;

}

/********************************************************************

*名稱: Input_Password()

*功能：輸入密碼

*說明：直到密碼輸入正確或新密碼設(shè)定完成才退出此函數(shù)

*********************************************************************/

void Input_Password()

{

__IO uint16_ti,index=0;

__IO uint16_tfaultcount = 0;

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)輸入密碼:");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(1);

while(1)

{

keyflag = 0;

while(keyflag < 1)

{ }

keyflag = 0;

if(keyval<=9)

{

LCD_DispChar(keyval+'0');

delay_nms(1);

passwordtmp[index++] = keyval;

}

elseif(keyval == 'c') //按下取消鍵

{

index--;

passwordtmp[index]='

;

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)輸入密碼:");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(1);

for(i=0;passwordtmp!='

;i++)

{

LCD_DispChar(passwordtmp+'0');

}

delay_nms(1);

}

elseif(keyval=='e') //按下確認(rèn)鍵

{

passwordtmp[index] = '

; //密碼結(jié)束標(biāo)記

for(i=0;password!='

;i++)

{

if(passwordtmp !=password)

{

faultcount ++;

break;

}

if(faultcount == 3)

{

faultcount = 0;

CLOSE_DOOR;

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(2,1,"密碼已經(jīng)錯(cuò)誤 3次");

delay_nms(2);

LCD_Setpos_DispString(3,1,"等待 1分鐘后再試");

delay_nms(60000); //密碼錯(cuò)誤3次以后，等待1分鐘才可再次輸入

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)?jiān)俅屋斎朊艽a:");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(2);

index = 0;

}

else if((faultcount >0) && (password!='

))

{

CLOSE_DOOR;

LCD_Clear();

delay_nms(2);

LCD_Setpos_DispString(2,2,"密碼錯(cuò)誤！");

delay_nms(1000);

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(1,1,"請(qǐng)?jiān)俅屋斎朊艽a:");

delay_nms(2);

LCD_Setpos(2,1);

delay_nms(2);

index = 0;

}

if((password=='

)&&(passwordtmp=='

))//輸入密碼正確

{

LCD_Clear();

delay_nms(1);

LCD_Setpos_DispString(2,3,"密碼正確！");

delay_nms(2);

LCD_Setpos_DispString(3,3,"鎖已打開！");

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