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@@ -1,11 +1,111 @@
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#include <Arduino.h>
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+#include <pins_arduino.h>
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+#include <SoftwareSerial.h>
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4
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#define ledPin 13
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6
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+#define READER_VCC
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+#define READER_RST 4
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9
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+#define READER_CLK 3
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10
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+#define READER_GND
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11
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+#define READER_VPP
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+#define READER_IO 2
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+
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+#define CARD_VCC
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+#define CARD_RST
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+#define CARD_CLK
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+#define CARD_GND
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+#define CARD_VPP
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+#define CARD_IO
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+
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+bool readerReset = false;
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+int baudRate = -1;
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+int etu = -1;
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+
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+int digitalPinToInterrupt(int pin)
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+{
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+ if (pin == 2)
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+ {
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+ return INT0;
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+ }
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+ else if (pin == 3)
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+ {
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+ return INT1;
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+ }
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+ return -1;
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+}
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+
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+void onReaderReset()
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+{
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+ readerReset = true;
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+}
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+
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+void computeEtu()
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+{
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+ baudRate = 9600;
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+ etu = 1000000 / baudRate;
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+}
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+
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+void sendAtrByte(char byte)
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+{
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+ unsigned long nextBitTime = micros() + (2 * etu);
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+ digitalWrite(READER_IO, HIGH);
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+ int bitNumber = 0;
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+ int parity = 0;
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+ while (bitNumber < 11)
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+ {
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+ if (nextBitTime <= micros())
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+ {
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+ if (bitNumber == 0)
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+ {
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+ digitalWrite(READER_IO, LOW);
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+ }
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+ else if (bitNumber < 9)
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+ {
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+ int a = bitRead(byte, bitNumber - 1);
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+ parity += a;
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+ digitalWrite(READER_IO, a);
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+ }
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+ else if (bitNumber == 9)
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+ {
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+ digitalWrite(READER_IO, parity % 2);
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+ }
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+ else if (bitNumber == 10)
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+ {
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+ digitalWrite(READER_IO, HIGH);
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+ break;
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+ }
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+ nextBitTime += etu;
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+ ++bitNumber;
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+ }
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+ }
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+}
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+
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+void sendAtr()
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+{
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+ const char atr[] = {0x3B, 0x65, 0x00, 0x00, 0x20, 0x63, 0xCB, 0x6C, 0x81};
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+ int size = sizeof(atr);
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+ pinMode(READER_IO, OUTPUT);
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+ for (int i = 0; i < size; ++i)
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+ {
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+ sendAtrByte(atr[i]);
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+ delayMicroseconds(4*etu);
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+ }
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+}
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+
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void setup() {
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- pinMode (ledPin, OUTPUT);
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+ Serial.begin(9600);
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+ Serial.println("Initializing...");
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+
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+ pinMode(READER_CLK, INPUT);
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+ pinMode(READER_RST, INPUT);
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+ pinMode(READER_IO, OUTPUT);
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+ digitalWrite(READER_IO, HIGH);
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+
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+ pinMode(ledPin, OUTPUT);
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7
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106
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digitalWrite (ledPin, LOW);
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+ Serial.println("Initialized");
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9
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}
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10
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110
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11
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111
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void delayMs(unsigned int ms)
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@@ -17,6 +117,20 @@ void delayMs(unsigned int ms)
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117
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118
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void loop() {
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119
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20
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- digitalWrite(ledPin, !digitalRead(ledPin));
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- delayMs(1000);
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+ if (digitalRead(READER_RST))
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+ {
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+ if (!readerReset)
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+ {
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+ computeEtu();
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+ sendAtr();
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+ readerReset = true;
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+ digitalWrite(ledPin, !digitalRead(ledPin));
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+ }
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+ }
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+ else
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+ {
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+ if (readerReset) {
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+ readerReset = false;
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+ }
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+ }
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136
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}
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