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**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(kāi)鎖。
** 正常顯示情況下，按下確認(rèn)鍵上鎖；按下密碼鍵，開(kāi)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(kāi)相當(dāng)于開(kāi)鎖與上鎖
完整代碼下載：
電子密碼鎖設(shè)計(jì).rar
(1.5 MB, 下載次數(shù): 670)
2017-4-28 11:10 上傳
點(diǎn)擊文件名下載附件
單片機(jī)源碼：
- /*****************************************************************************
- ** 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(kāi)鎖。
- ** 正常顯示情況下，按下確認(rèn)鍵上鎖；按下密碼鍵，開(kāi)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(kāi)相當(dāng)于開(kāi)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,'
- [/color]}; //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]!='
- [/color]; 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])!='
- [/color]; index++)
- {
- password[index]=BKP_ReadBackupRegister(BKPDataReg[index]);
- }
- password[index]='
- [/color];
- }
- /*************************************************************
- **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_InitTypeDef GPIO_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(kāi)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_InitTypeDef GPIO_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(shuō) 明：PE.0~PE.3 鍵盤中斷
- *********************************************************************/
- void EXTI_Configuration(void)
- {
- EXTI_InitTypeDef EXTI_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(shuō) 明：PE.0~PE.3 鍵盤中斷,均為下降沿觸發(fā)
- *********************************************************************/
- void NVIC_Configuration(void)
- {
- NVIC_InitTypeDef NVIC_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)n us
- void delay_nus(unsigned long n)
- {
- unsigned long j;
- while(n--)
- { j=15;
- while(j--);
- }
- }
- //延時(shí)n ms
- void delay_nms(unsigned long n)
- {
- while(n--)
- delay_nus(1075);
- }
- /********************************************************************
- *名 稱: Change_Password
- *功 能：更改密碼
- *說(shuō) 明：直到新密碼設(shè)定完成才退出此函數(shù)
- *********************************************************************/
- void Change_Password(void)
- {
- uint16_t i,index=0;
- uint16_t flag=0;
- uint16_t passwordtmp2[21]={'
- [/color]};
- LCD_Clear();
- delay_nms(2);
- for(i=0;i<21;i++)
- passwordtmp[i] = '
- [/color];
- 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;
- else passwordtmp2[index++] = keyval;
- }
- else if((keyval == 'e')&&(flag == 0))
- {
- passwordtmp[index] = '
- [/color];
- 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;
- }
- else if((keyval == 'e')&&(flag == 1))
- {
- for(i=0;passwordtmp[i]!='
- [/color];i++)
- {
- if(passwordtmp[i] != passwordtmp2[i])
- {
- 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[i]=='
- [/color])
- {
- for(i=0;passwordtmp[i]!='
- [/color];i++)
- {
- password[i] = passwordtmp[i];
- }
- password[i] = '
- [/color];
- 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(shuō) 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_t i,index=0;
- __IO uint16_t faultcount = 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;
- }
- else if(keyval == 'c') //按下取消鍵
- {
- index--;
- passwordtmp[index]='
- [/color];
- 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]!='
- [/color];i++)
- {
- LCD_DispChar(passwordtmp[i]+'0');
- }
- delay_nms(1);
- }
- else if(keyval=='e') //按下確認(rèn)鍵
- {
- passwordtmp[index] = '
- [/color]; //密碼結(jié)束標(biāo)記
- for(i=0;password[i]!='
- [/color];i++)
- {
- if(passwordtmp[i] != password[i])
- {
- 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[i]!='
- [/color]))
- {
- 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[i]=='
- [/color])&&(passwordtmp[i]=='
- [/color]))//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(kāi)！");
- …………限于本文篇幅 余下代碼請(qǐng)從51黑下載附件…………
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