ARDUINO._综合

十二月八日。

使用了arduinoIDE。

一个关于打卡器的尝试。

使用到了arduino开发板、ds1302时间模块、MFRC522模块。

贴上代码：

#include <DS1302.h>
#include <EEPROM.h>
#include <SPI.h>
#include <MFRC522.h>void printHex(byte *buffer, byte bufferSize);
#define SS_PIN 10
#define RST_PIN 9byte nuidPICC[4];
int address = 0;///
DS1302 rtc(2, 3, 4); //对应DS1302的RST,DAT,CLKvoid initRTCTime(void)//初始化RTC时钟
{rtc.writeProtect(false); //关闭写保护rtc.halt(false); //清除时钟停止标志Time t(2020, 4, 25, 21, 50, 50, 7); //新建时间对象 最后参数位星期数据，周日为1，周一为2以此类推rtc.time(t);//向DS1302设置时间数据
}void saveTime()//打印时间数据
{Time tim = rtc.time(); //从DS1302获取时间数据char buf[12];snprintf(buf, sizeof(buf), "%02d-%02d %02d:%02d",tim.mon, tim.date, tim.hr, tim.min);Serial.println(buf);// for(int i = 0;i <= 11; i++)// {EEPROM.write(address,tim.mon);EEPROM.write(address+2,tim.date);EEPROM.write(address+4,tim.hr);EEPROM.write(address+6,tim.min);// }address+=7;
}///MFRC522 rfid(SS_PIN, RST_PIN);    //创建MFRC522实例
MFRC522::MIFARE_Key key; //byte t[3]={6,0,0};void setup() { Serial.begin(9600);SPI.begin();            //初始化 SPI 总线rfid.PCD_Init();        //初始化 MFRC522 卡for (byte i = 0; i < 6; i++) {key.keyByte[i] = 0xFF;}}//initRTCTime(void);void loop() {
//
//      delay(1000);
//    t[2]++;
//    if(t[2]==60){
//      t[1]++;
//      t[2]=0;
//    }
//    if(t[1]==60){
//      t[0]++;
//      t[1]=0;
//    }
//    if(t[0]==24){
//      t[0]=0;
//    }
//
/// if(!rfid.PICC_IsNewCardPresent())return;if(!rfid.PICC_ReadCardSerial())return;saveTime();//打印时间for (byte i = 0; i < 4; i++) {nuidPICC[i] = rfid.uid.uidByte[i];}Serial.print(F("Hex1:"));printHex(rfid.uid.uidByte, rfid.uid.size);//函数调用（buffer[i],bufferSize）Serial.println();//暂停PICCrfid.PICC_HaltA();//暂停PCD上的加密rfid.PCD_StopCrypto1();///for (byte i = 0; i < 4; i++){EEPROM.write(address, rfid.uid.uidByte[i]);address = address + 1;if (address == EEPROM.length()) {while(Serial){}//等待}}// int asdfghjkl = printTime();
//      for(byte j = 0; j <= 2; j++)
//      {
//          EEPROM.write(address,asdfghjkl);
//      
//     
//        address = address + 1;
//        if (address == EEPROM.length()) 
//        {
//          while(Serial){}//等待
//        }
//      }///    
}void printHex(byte *buffer, byte bufferSize) {for (byte i = 0; i < bufferSize; i++) {Serial.print(buffer[i] < 0x10 ? "0" : "");Serial.print(buffer[i], HEX);}Serial.print("#");
}

在把代码烧录到板子里面后，只要我们刷卡，就可以读取到卡片的uid并将刷卡时的时间一同写入到EEPROM中，再辅以EEPROM.read程序读取数据，通过arduinoIDE的串口监视器即可获得数据，复制数据到excel中即可进行数据分析。

EEPROM.read：

/** EEPROM Read** Reads the value of each byte of the EEPROM and prints it* to the computer.* This example code is in the public domain.*/#include <EEPROM.h>// start reading from the first byte (address 0) of the EEPROM
int address = 0;
byte value;void setup() {// initialize serial and wait for port to open:Serial.begin(9600);while (!Serial) {; // wait for serial port to connect. Needed for native USB port only}
}void loop() {// read a byte from the current address of the EEPROMvalue = EEPROM.read(address);Serial.print(value, DEC);/***Advance to the next address, when at the end restart at the beginning.Larger AVR processors have larger EEPROM sizes, E.g:- Arduno Duemilanove: 512b EEPROM storage.- Arduino Uno:        1kb EEPROM storage.- Arduino Mega:       4kb EEPROM storage.Rather than hard-coding the length, you should use the pre-provided length function.This will make your code portable to all AVR processors.***/address = address + 1;if((address % 11) % 7 == 0 )//11-4=7{Serial.println();}if(address % 11 == 0 )//11-4=7{Serial.println();}if (address == EEPROM.length()) {address = 0;}/***As the EEPROM sizes are powers of two, wrapping (preventing overflow) of anEEPROM address is also doable by a bitwise and of the length - 1.++address &= EEPROM.length() - 1;***/delay(10);
}

在这里呈现的效果是时间一行，uid一行，再一行空白。由此区分开每个人每次打卡记录。

下面附实物图：