2015年7月28日星期二

Arduino 網路遠端遙控家電

源自於

http://swf.com.tw/?p=630

http://swf.com.tw/?p=634

本文旨在補充《超圖解Arduino互動設計入門》第十六章「網路家電控制」單元，增加另一個網頁控制範例。

Arduino網路遠端遙控家電開關（二）

Arduino官方的Ethernet以太網路控制板，當中的數位腳位編號4，保留給SD記憶卡的晶片選擇線使用，請不要挪做他用。

數位10~13腳是SPI介面的預設腳位，用於控制以太網路晶片，也請不要使用。

2015年7月27日星期一

Arduino Read a card using a mfrc522 reader

Arduino Read a card using a mfrc522 reader

參考

1) http://playground.arduino.cc/Learning/MFRC522

2) http://blog.davidou.org/archives/684

3) http://www.dotblogs.com.tw/aliceyeh/archive/2014/11/12/147272.aspx

MFRC-522 RC522 RFID射频 IC卡感应模块 11/11 ¥12.8 资料下载1 资料下载2 Philips MFRC522

非接触式通信中高集成度的读写卡芯片。支持14443A兼容应答器信号。数字部分处理 ISO14443A 帧和错误检测。支持快速 CRYPTO1 加密算法，用语验证MIFARE系列产品。支持 MIFARE 系列更高速的非接触式通信，双向数据传输速率高达 424 kb/s。与MF RC500 和 MF RC530 有不少相似之处，同时也具备许多特点和差异。它与主机间通信采用SPI模式，有利于减少连线，缩小PCB板体积，降低成本。

◦ Module Name: MF522-ED
◦ Working current：13—26mA/ DC 3.3V
◦ Working frequency：13.56MHz
◦ Card reading distance ：0～60mm（mifare1 card）
◦ Protocol：SPI
◦ Data communication speed：Maximum 10Mbit/s
◦ Card types supported：mifare1 S50、mifare1 S70、mifare UltraLight、mifare Pro、mifare Desfire
◦ NXP RC522 Datasheet

然後板上有VCC、RST、GND、MISO、MOSI、SCK、NSS、IRQ這八個腳位

VCC要插到ARDUINO的3V腳位 (注意!不是5V)

然後RST接數位接腳5(DIGITAL 5)

GND就是接GND

MISO->數位12

MOSI->數位11

SCK->數位13

NSS->數位10

IRQ-> 我沒接

※ MFRC522

◆ GitHub -- miguelbalboa/rfid (Arduino for MRFC522) ★★★★★ 偶比較喜歡這個封包, 不過原始來源都素一樣滴~~~141123 DL

Mifare 1K=1024bytes, 4K=4096bytes, Mini(S20)=320bytes, Ultralight=64bytes

◎ ElectroDragon -- RFID Card Reader/Detector Module ★★★★141202 DL

◎ Arduino Playground -- Mifare MFRC522 RFID Reader/Writer

▪ Dumping Mifare's TAGs

▪ Read And Write Tags

▪ Door Unlocker

▪ Extend RC522 Receiver Range

/**
* Read a card using a mfrc522 reader on your SPI interface
* Pin layout should be as follows (on Arduino Uno):
* MOSI: Pin 11 / ICSP-4
* MISO: Pin 12 / ICSP-1
* SCK: Pin 13 / ISCP-3
* SS: Pin 10
* RST: Pin 9
*
* Script is based on the script of Miguel Balboa.
* Serial number is shown on a HD44780 compatible display
*
* The circuit:
* LCD RS pin to digital pin (7)
* LCD Enable pin to digital pin (6)
* LCD D4 pin to digital pin 5
* LCD D5 pin to digital pin 4
* LCD D6 pin to digital pin 3
* LCD D7 pin to digital pin 2
* LCD R/W pin to ground
* 10K resistor:
* ends to +5V and ground
* wiper to LCD VO pin (pin 3)
*
* @version 0.1
* @author Henri de Jong
* @since 27-01-2013
*/

#include <SPI.h>
#include <RFID.h>

//I2C + I2C LCD Library
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display
/*==========================================
SDA – 接 Arduino 的 Analog Pin 4 (Arduino Mega 為 Pin 20)
SCL – 接 Arduino 的 Analog Pin 5 (Arduino Mega 為 Pin 21)
GND – 接 GND
VCC – 接 +5V
==========================================*/

#define RFID_OUT 7

#define SS_PIN 10
#define RST_PIN 9

RFID rfid(SS_PIN, RST_PIN);

// Setup variables:
int serNum0;
int serNum1;
int serNum2;
int serNum3;
int serNum4;

void setup()
{
Serial.begin(9600);
SPI.begin();
rfid.init();

lcd.init(); // initialize the lcd
// Print a message to the LCD.
lcd.backlight();
// 輸出初始化文字
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("RFIDReader RC522"); //RFID Reader RC522 + Access Control System
Serial.println("RFID Reader RC522 + Access Control System");

pinMode(RFID_OUT, OUTPUT); // sets the digital pin as output
digitalWrite(RFID_OUT, HIGH); //Set RFID OUT OFF

}

void loop()
{

if (rfid.isCard()) {
if (rfid.readCardSerial()) {
if (rfid.serNum[0] != serNum0
&& rfid.serNum[1] != serNum1
&& rfid.serNum[2] != serNum2
&& rfid.serNum[3] != serNum3
&& rfid.serNum[4] != serNum4
) {
/* With a new cardnumber, show it. */
Serial.println(" ");
Serial.println("Card found");
serNum0 = rfid.serNum[0];
serNum1 = rfid.serNum[1];
serNum2 = rfid.serNum[2];
serNum3 = rfid.serNum[3];
serNum4 = rfid.serNum[4];

//Serial.println(" ");
Serial.println("Cardnumber:");
Serial.print("Dec: ");
Serial.print(rfid.serNum[0],DEC);
Serial.print(", ");
Serial.print(rfid.serNum[1],DEC);
Serial.print(", ");
Serial.print(rfid.serNum[2],DEC);
Serial.print(", ");
Serial.print(rfid.serNum[3],DEC);
Serial.print(", ");
Serial.print(rfid.serNum[4],DEC);
Serial.println(" ");

Serial.print("Hex: ");
Serial.print(rfid.serNum[0],HEX);
Serial.print(", ");
Serial.print(rfid.serNum[1],HEX);
Serial.print(", ");
Serial.print(rfid.serNum[2],HEX);
Serial.print(", ");
Serial.print(rfid.serNum[3],HEX);
Serial.print(", ");
Serial.print(rfid.serNum[4],HEX);
Serial.println(" ");

/* Write the HEX code to the display */
lcd.clear();
// lcd.setCursor(0, 0);
// lcd.print("Cardno (hex):");
lcd.setCursor(0,1);
lcd.print(rfid.serNum[0], HEX);
lcd.print(',');
lcd.print(rfid.serNum[1], HEX);
lcd.print(',');
lcd.print(rfid.serNum[2], HEX);
lcd.print(',');
lcd.print(rfid.serNum[3], HEX);
lcd.print(',');
lcd.print(rfid.serNum[4], HEX);

if (rfid.serNum[0]==68 && //RFID Code Correct Set OUT ON
rfid.serNum[1]==81 && // Card found Cardnumber:
rfid.serNum[2]==187 && //Dec: 68, 81, 187, 150, 56
rfid.serNum[3]==150 && //Hex: 44, 51, BB, 96, 38
rfid.serNum[4]==56 ) {
digitalWrite(RFID_OUT, LOW);
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("RFID SET ON "); //Set RFID OUT ON
}

if (rfid.serNum[0]==112 && //RFID Code Correct Set OUT OFF
rfid.serNum[1]==33 && // Card found Cardnumber:
// Dec: 112, 33, 237, 16, 172
// Hex: 70, 21, ED, 10, AC

rfid.serNum[2]==237 &&
rfid.serNum[3]==16 &&
rfid.serNum[4]==172 ) {
digitalWrite(RFID_OUT, HIGH); //Set RFID OUT OFF
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("RFID SET OFF ");
}

} else {
/* If we have the same ID, just write a dot. */
Serial.print(".");
}
}
}

rfid.halt();
}

Arduino IR Remote 程式-2

設定游標位置在第2行行首

lcd.print("IR SET OFF ");

}



}

}

Arduino IR Remote 程式-1

參考 http://yehnan.blogspot.tw/2014/09/arduinoerror-tkd2-was-not-declared.html

1) 編譯錯誤錯誤問題

#include <IRremote.h>
void setup() {
}
void loop() {
}

就會出現底下的編譯錯誤訊息（若選擇「Arduino Robot Control」以外的板子）：

D:\arduino-1.6.5-r2-windows\libraries\RobotIRremote\IRremoteTools.cpp:5:16: error: 'TKD2' was not declared in this scope
int RECV_PIN = TKD2; // the pin the IR receiver is connected to

原因在於，Arduino IDE 1.5.5 r2開始加入一套縮減版的IRremote程式庫，名為RobotIRremote，更動了不少東西，但有些地方卻沒變（譬如檔名），以至於起衝突。

此錯誤的詳細情況，大致如此：想使用自行安裝的IRremote，但Arduino IDE卻以內建的RobotIRremote為優先；RobotIRremote的檔案IRremoteTools.cpp需要TKD2的腳位定義，而只有「Arduino Robot Control」板子的腳位定義檔裡才有TKD2這玩意兒，如此一來，就會發生上述的錯誤訊息。

2) 移除 D:\arduino-1.6.5-r2-windows\libraries\RobotIRremote 相關的Robot目錄檔案

IRremote.h 程式

/*
* IRremote
* Version 0.1 July, 2009
* Copyright 2009 Ken Shirriff
* For details, see http://arcfn.com/2009/08/multi-protocol-infrared-remote-library.htm http://arcfn.com
*
* Interrupt code based on NECIRrcv by Joe Knapp
* http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1210243556
* Also influenced by http://zovirl.com/2008/11/12/building-a-universal-remote-with-an-arduino/
*/

#ifndef IRremote_h
#define IRremote_h

// The following are compile-time library options.
// If you change them, recompile the library.
// If DEBUG is defined, a lot of debugging output will be printed during decoding.
// TEST must be defined for the IRtest unittests to work. It will make some
// methods virtual, which will be slightly slower, which is why it is optional.
// #define DEBUG
// #define TEST

// Results returned from the decoder
class decode_results {
public:
int decode_type; // NEC, SONY, RC5, UNKNOWN
unsigned long value; // Decoded value
int bits; // Number of bits in decoded value
volatile unsigned int *rawbuf; // Raw intervals in .5 us ticks
int rawlen; // Number of records in rawbuf.
};

// Values for decode_type
#define NEC 1
#define SONY 2
#define RC5 3
#define RC6 4
#define DISH 5
#define SHARP 6
#define UNKNOWN -1

// Decoded value for NEC when a repeat code is received
#define REPEAT 0xffffffff

// main class for receiving IR
class IRrecv
{
public:
IRrecv(int recvpin);
void blink13(int blinkflag);
int decode(decode_results *results);
void enableIRIn();
void resume();
private:
// These are called by decode
int getRClevel(decode_results *results, int *offset, int *used, int t1);
long decodeNEC(decode_results *results);
long decodeSony(decode_results *results);
long decodeRC5(decode_results *results);
long decodeRC6(decode_results *results);
long decodeHash(decode_results *results);
int compare(unsigned int oldval, unsigned int newval);

}
;

// Only used for testing; can remove virtual for shorter code
#ifdef TEST
#define VIRTUAL virtual
#else
#define VIRTUAL
#endif

class IRsend
{
public:
IRsend() {}
void sendNEC(unsigned long data, int nbits);
void sendSony(unsigned long data, int nbits);
void sendRaw(unsigned int buf[], int len, int hz);
void sendRC5(unsigned long data, int nbits);
void sendRC6(unsigned long data, int nbits);
void sendDISH(unsigned long data, int nbits);
void sendSharp(unsigned long data, int nbits);
// private:
void enableIROut(int khz);
VIRTUAL void mark(int usec);
VIRTUAL void space(int usec);
}
;

// Some useful constants

#define USECPERTICK 50 // microseconds per clock interrupt tick
#define RAWBUF 76 // Length of raw duration buffer

// Marks tend to be 100us too long, and spaces 100us too short
// when received due to sensor lag.
#define MARK_EXCESS 100

#endif

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

#include <IRremote.h>

int RECV_PIN = 2;

// 使用數位腳位2接收紅外線訊號 Timer2
//預設是 Timer2，發射器要接 pin 3，假如你不想用 pin 3 當作紅外線發射的腳位，
//你有一個選擇，可以換成 Timer1，這樣就可以改用 pin 9 來接紅外線發射器

IRrecv irrecv(RECV_PIN); // 初始化紅外線訊號輸入
decode_results results; // 儲存訊號的結構

void setup()
{
Serial.begin(9600);
irrecv.blink13(true); // 設為true的話，當收到訊號時，腳位13的LED便會閃爍
irrecv.enableIRIn(); // 啟動接收
}

void loop() {
if (irrecv.decode(&results)) { // 接收紅外線訊號並解碼
Serial.print("results value is "); // 輸出解碼後的資料
Serial.print(results.value, HEX);
Serial.print(", bits is ");
Serial.print(results.bits);
Serial.print(", decode_type is ");
Serial.println(results.decode_type);
irrecv.resume(); // 準備接收下一個訊號
}
}

2015年7月26日星期日

Arduino TimeAlarms Library

TimeAlarms Library

源自於

http://www.pjrc.com/teensy/td_libs_TimeAlarms.html

TimeAlarms, by Michael Margolis, runs functions at specific times. It is means to be used together with the Time libraryDownload: TimeAlarms.zip

Hardware Requirements

TimeAlarms does not require any special hardware, because it uses the time and date provided by the Time library.

Creating Alarms

Alarms are used to call a function at a specific time of the day.
Alarm.alarmRepeat(hours, minutes, seconds, function);

Create an alarm that will call a function every day at a particular time.

Alarm.alarmRepeat(dayofweek, hours, minutes, seconds, function);

Create an alarm that will call a function every week on a specific day at a particular time.
"dayofweek" can be dowSunday, dowMonday, dowTuesday, dowWednesday, dowThursday, dowFriday, or dowSaturday.

Alarm.alarmOnce(hours, minutes, seconds, function);

Create an alarm that will call a function tomorrow at a particular time.

Alarm.alarmOnce(dayofweek, hours, minutes, seconds, function);

Create an alarm that will call a function once, at specific day and time.

Creating Timers

Timers call a function at regular intervals.
Alarm.timerRepeat(seconds, function);

Create a timer that will call a function every at an interval of "seconds".

Alarm.timerOnce(seconds, function);

Create a timer that will call a function once in "seconds".

Normal Running Usage

Alarm.delay(milliseconds);

Alarms and Timers are only checks and their functions called when you use this delay function. You can pass 0 for minimal delay. This delay should be used instead of the normal Arduino delay(), for timely processing of alarms and timers.

Example Program

You can open this example from File > Examples > TimeAlarms > TimeAlarmExample.

/*
 * TimeAlarmExample.pde
 *
 * This example calls alarm functions at 8:30 am and at 5:45 pm (17:45)
 * and simulates turning lights on at night and off in the morning
 * A weekly timer is set for Saturdays at 8:30:30
 *
 * A timer is called every 15 seconds
 * Another timer is called once only after 10 seconds
 *
 * At startup the time is set to Jan 1 2011  8:29 am
 */
 
#include <Time.h>
#include <TimeAlarms.h>

void setup()
{
  Serial.begin(9600);
  setTime(8,29,0,1,1,11); // set time to Saturday 8:29:00am Jan 1 2011
  // create the alarms 
  Alarm.alarmRepeat(8,30,0, MorningAlarm);  // 8:30am every day
  Alarm.alarmRepeat(17,45,0,EveningAlarm);  // 5:45pm every day 
  Alarm.alarmRepeat(dowSaturday,8,30,30,WeeklyAlarm);  // 8:30:30 every Saturday 

 
  Alarm.timerRepeat(15, Repeats);            // timer for every 15 seconds    
  Alarm.timerOnce(10, OnceOnly);             // called once after 10 seconds 
}

void  loop(){  
  digitalClockDisplay();
  Alarm.delay(1000); // wait one second between clock display
}

// functions to be called when an alarm triggers:
void MorningAlarm(){
  Serial.println("Alarm: - turn lights off");    
}

void EveningAlarm(){
  Serial.println("Alarm: - turn lights on");           
}

void WeeklyAlarm(){
  Serial.println("Alarm: - its Monday Morning");      
}

void ExplicitAlarm(){
  Serial.println("Alarm: - this triggers only at the given date and time");       
}

void Repeats(){
  Serial.println("15 second timer");         
}

void OnceOnly(){
  Serial.println("This timer only triggers once");  
}

void digitalClockDisplay()
{
  // digital clock display of the time
  Serial.print(hour());
  printDigits(minute());
  printDigits(second());
  Serial.println(); 
}

void printDigits(int digits)
{
  Serial.print(":");
  if(digits < 10)
    Serial.print('0');
  Serial.print(digits);
}

2015年7月25日星期六

Arduino Keyboards-MultipleButtons

Keyboards-MultipleButtons

源自於

https://arduino-info.wikispaces.com/Keyboards-MultipleButtons

5-Button Keyboard: Uses series resistors and switches to decide a variety of voltages to send to an Arduino Analog Input.
You can use this same technique for multiple buttons you mount in other ways or orientations.
Diagram (right):

Below: Example code of a 5-button keyboard that uses resistors to connect to a single Analog Input Pin:

/* YourDuino Example 5 Button Analog Keyboard
5-button keyboard connected to Analog Input 0
terry@yourduino.com */

/*-----( Import needed libraries )-----*/
/*-----( Declare Constants and Pin Numbers )-----*/

#define keyboard_AnalogInput 0

#define btnRIGHT 0
#define btnUP 1
#define btnDOWN 2
#define btnLEFT 3
#define btnENTER 4
#define btnNONE 5
/*-----( Declare objects )-----*/
/*-----( Declare Variables )-----*/

int adc_key_in = 0;
int buttonPressed;

void setup() /****** SETUP: RUNS ONCE ******/
{
Serial.begin(9600);
Serial.println("Test 5-button keyboard");
} //--(end setup )---

void loop() /****** LOOP: RUNS CONSTANTLY ******/
{
buttonPressed = read_keyboard();
if (buttonPressed != btnNONE)
{
Serial.print("OK - That looks like you pressed ");
Serial.println(buttonPressed, DEC);
}
delay(500);

} //--(end main loop )---

/*-----( Declare User-written Functions )-----*/
// read the buttons
int read_keyboard()
{
adc_key_in = analogRead(keyboard_AnalogInput);
// read the value from the sensor
// buttons when read are centered at these values: 0, 144, 329, 504, 741
// add approx 50 to those values and check to see if we are close
if (adc_key_in > 1000) return btnNONE;
if (adc_key_in < 50) return btnRIGHT;
if (adc_key_in < 195) return btnUP;
if (adc_key_in < 380) return btnDOWN;
if (adc_key_in < 555) return btnLEFT;
if (adc_key_in < 790) return btnENTER;
return btnNONE; // when all others fail, return this...
}

//*********( THE END )***********

2015年7月24日星期五

Arduino 溫濕度計DHT 11

DHT-11 是一個結合濕度計和測溫元件量測週遭空氣環境，並與一個高性能8位元單晶片相連接，將所量測到的溫、濕度資料拆解成為數位訊號，再由 data pin腳將資料送出。使用上很簡單，但是抓取資料時必須要特別注意時間的掌控，而且每筆資料的抓取時間間隔要1~2秒鐘，不能太快。與 DHT-22 比較，DHT-11 較不精密與準確且溫濕度量測範圍不大，雖然如此，但對於學習與熟悉溫、濕度感測卻是綽綽有餘，傳輸的距離又可長達20m以上，而且比 DHT-22 較小且便宜許多，是十分方便的簡易測試元件。

其規格如下：

1、濕度測量範圍：20~90%RH;

2、濕度測量精度：±5%RH;

3、溫度測量範圍：0~50℃
4、溫度測量精度：±2℃
5、電源供應範圍： 3~5V
6、頻率不可超過：0.5Hz (每2秒一次)

接線的方法十分簡單，"+"接5V，"-"接GND，data pin接上要輸入的Pin腳。有人說因為數位訊號要接高data電位，所以把data pin外接4.7歐姆電阻至Vcc。不過我曾嘗試不接那4.7k 歐姆，試出來的效果看起來沒有太大的差別。

先下載 library ，丟到Arduino的libraries裡面，然後再開Arduino IDE，去叫<dht.h>

//溫濕度計DHT 11。
#include <dht.h>
#define dht_dpin 2 //定義訊號要從Pin A0 進來
//I2C + I2C LCD Library
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display
/*==========================================
SDA – 接 Arduino 的 Analog Pin 4 (Arduino Mega 為 Pin 20)
SCL – 接 Arduino 的 Analog Pin 5 (Arduino Mega 為 Pin 21)
GND – 接 GND
VCC – 接 +5V
==========================================*/

dht DHT;

void setup(){
lcd.init(); // initialize the lcd
// Print a message to the LCD.
lcd.backlight();
// 輸出初始化文字
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("Humidity and");
lcd.setCursor(0, 1); // 設定游標位置在第2行行首
lcd.print("temperature");

Serial.begin(9600);
delay(300); //Let system settle
Serial.println("Humidity and temperature\n\n");
delay(700); //Wait rest of 1000ms recommended delay before
//accessing sensor
}

void loop(){
DHT.read11(dht_dpin); //去library裡面找DHT.read11

lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("Humidity =");
lcd.print(DHT.humidity);
lcd.print("%");
lcd.setCursor(0, 1); // 設定游標位置在第2行行首
lcd.print("Temp = ");
lcd.print(DHT.temperature);
lcd.print("C ");

Serial.print("Humidity = ");
Serial.print(DHT.humidity);
Serial.print("% ");
Serial.print("temperature = ");
Serial.print(DHT.temperature);
Serial.println("C ");
delay(1000); //每1000ms更新一次
}

參考來源 :

http://ming-shian.blogspot.tw/2014/05/arduino19dht11.html

Arduino Weigand 26bit Decoder ---2

In Wiegand 26 / Wiegand 34 / Wiegand 36 and all other Wiegand protocols used 2 wires (D0 and D1) to connect reader to MCU.

In standby D0 and D1 connected to VCC(+5V). All data from reader goes in binary format - If reader transmitting 0, it connecting D0 wire to ground for 20-50mks then connecting back to VCC and waits for 2ms before sending next bit. If goes '1' - D1 will be connected to ground fo 20-50mks and so on.
If no change in lines for more than 2ms - transfer complete.

Picture:

Wiegand protocol — logic level

In logic level wiegand26 have 26 bit of data, 8 for — facility code, 16 for card number, and 2 for parity control.
Facility code – number of building or company where card is used.
Card number – card number

/*
* https://github.com/monkeyboard/Wiegand-Protocol-Library-for-Arduino
*/

#include <Wiegand.h>
//I2C + I2C LCD Library
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2); // set the LCD address to 0x27 for a 16 chars and 2 line display
/*==========================================
SDA – 接 Arduino 的 Analog Pin 4 (Arduino Mega 為 Pin 20)
SCL – 接 Arduino 的 Analog Pin 5 (Arduino Mega 為 Pin 21)
GND – 接 GND
VCC – 接 +5V
==========================================*/

WIEGAND wg;

void setup() {
Serial.begin(9600);

wg.begin();
lcd.init(); // initialize the lcd
// Print a message to the LCD.
lcd.backlight();
// 輸出初始化文字
lcd.setCursor(0, 0); // 設定游標位置在第一行行首
lcd.clear();
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("Reading RFID....");
lcd.setCursor(0, 1); // 設定游標位置在第2行行首
lcd.print("Wiegand 26 bit..");
}

void loop() {
if(wg.available())
{
lcd.clear();
lcd.setCursor(0, 0); // 設定游標位置在第1行行首
lcd.print("DEC Code=");
lcd.print(wg.getCode());
lcd.setCursor(0, 1); // 設定游標位置在第2行行首
lcd.print("HEX Code=");
lcd.print(wg.getCode(),HEX);

Serial.print("Wiegand HEX = ");
Serial.print(wg.getCode(),HEX);
Serial.print(", DECIMAL = ");
Serial.print(wg.getCode());
Serial.print(", Type W");
Serial.println(wg.getWiegandType());
}
}

參考文件:

1) https://github.com/monkeyboard/Wiegand-Protocol-Library-for-Arduino

2) http://zps-electronics.com/eng/docs/wiegand_rfid_reader_avr/

3) https://github.com/ugge75/Wiegand-Protocol-Library-for-Arduino-MEGA-2560

4) 程式庫

Wiegand 24 and Wiegand 36 Protocol Library for Arduino

https://github.com/monkeyboard/Wiegand-Protocol-Library-for-Arduino

char dat[26]; // 26 bit for data
unsigned char fcode; // for facility code (0..255)
unsigned int code; // for card number (0..65535)

while(){

if(PIND.3==0){ // D1 on ground?
dat[i]=1; // bit = 1
i++;
while(PIND.3==0){};//waiting for release
}

if(PIND.4==0){// D0 on ground?
dat[i]=0; // bit = 0
i++;
while(PIND.4==0){}; //waiting for release
}

if(i==27) { // i=27, 26 bits collected
//now parsing
b=0;
for(a=9;a>1;a--){ //first 8bit in revers order
if(dat[a]==1) fcode=fcode+stepen(b); //if bit =1,
//adding position^2
//(2^0 , 2^1 , 2^2 and etc)
b++; // inc position
}

b=0; // reset bit counter

for(a=25;a>9;a--){//same for next 16 bit (card number)
if(dat[a]==1) code=code+stepen(b);
b++;
}
}

//If all OK, we have
//facility code — in var fcode
//card number – in var code

//Now searching...
//all numbers in 2 arrays in eeprom
//unsigned char fcode[MAX]; - facility code
//unsigned int code[MAX]; - card number
//MAX – number of "lines" in memory
// for attiny2313 - 40 code numbers

for(i=0;i<MAX;i++){//going thru array
// cheching only facility code in this step
if(fcode == fcodedb[i]){ //if code found
//checking number in same position
if(code==codedb[i]){ //number found...
//...we have exact numbers
card_found=1; // flag = card found
break; //breaking - no need to check next lines
}
}
}

//card found?
if(card_found){//yes!
PORTD.5=1;//opening lock
PORTD.6=0;//GREEN LED
delay_ms(5000); //5 second to enter
PORTD.5=0;//locking back
PORTD.6=1;//turning off LED
} else{ //NO! card not found
PORTB,0=0;//RED led
delay_ms(3000); //delay for 3 seconds
PORTB.0=1;//turn of red led
}

//now clear all data
fcode=0; // facility code
code=0; // card number
i=0; // bit counter
card_found=0; // flag

}
//go to first line... and wait for signal on D0 or D1
}

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