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brmdoor.ino
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brmdoor.ino
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// get file cardids.h from the Council section in our wiki!
#define MUSIC 1
#include "SoftwareSerial.h"
// pins
const int magnetPin = 10;
const int soundPin = 9; /* piezo in series with 100R */
const int statusLed = 8;
const int statusBtn = 7;
const int videoLed = 6;
const int videoBtn = 5;
const int doorLock = 4;
const int rfidRx = 3;
const int rfidTx = 2;
int statusState = 0, statusStateOverride = 0;
int videoState = 0, videoStateOverride = 0;
// cardId is the same as you can see in CARD telnet message
struct ACLdata {
byte cardId[7];
char *nick;
} ACL[] = {
// the following include file contains lines like
// { {0x12, 0x34, 0x56, 0x78, 0x9A, 0xBC, 0xDE}, "username" },
#include "cardids.h"
};
// comSerial for communication with the host
#define comSerial Serial
// rfidSerial for communication with the RFID reader
SoftwareSerial rfidSerial(rfidTx, rfidRx);
#if MUSIC
#include "pitches.h"
int melody_nak[] = { NOTE_G5, NOTE_G5, NOTE_G5, NOTE_DS5, NOTE_AS5, NOTE_G5, NOTE_DS5, NOTE_AS5, NOTE_G5};
int noteDurations_nak[] = { 330, 330, 330, 250, 120, 330, 250, 120, 500 };
int melody_ack[] = { NOTE_D6, NOTE_A6, NOTE_C7, NOTE_A6 };
int noteDurations_ack[] = { 120, 500, 120, 500 };
int melody_alarm[] = { NOTE_D6, NOTE_F6, NOTE_D6, NOTE_F6 };
int noteDurations_alarm[] = { 700, 700, 700, 700 };
void toneManual(int pin, int frequency, int duration)
{
unsigned long period = 1000000/frequency;
unsigned long length;
boolean state = false;
for (length = 0; length < (long) duration * 1000; length += period) {
state = !state;
digitalWrite(pin, state);
/* The 50uS correspond to the time the rest of the loop body takes.
* It seems about right, but has not been tuned precisely for
* a 16MHz ATMega. */
delayMicroseconds(period - 50);
//comSerial.print(pin, DEC); comSerial.print(state, DEC); comSerial.write(" "); comSerial.print(period); comSerial.write(" "); comSerial.print(length); comSerial.write("\n");
}
}
void playMelody(int *melody, int *noteDurations, int dcoef, int notes)
{
int i;
for (i = 0; i < notes; i++) {
// comSerial.print(melody[i]); comSerial.write(" "); comSerial.print(noteDurations[i]); comSerial.write("\n");
toneManual(soundPin, melody[i], noteDurations[i]);
delay(noteDurations[i] * dcoef/10);
}
}
void playMelodyAck()
{ playMelody(melody_ack, noteDurations_ack, 6, sizeof(melody_ack)/sizeof(melody_ack[0])); }
void playMelodyNak()
{ playMelody(melody_nak, noteDurations_nak, 6, sizeof(melody_nak)/sizeof(melody_nak[0])); }
void playMelodyAlarm()
{ playMelody(melody_alarm, noteDurations_alarm, 1, sizeof(melody_alarm)/sizeof(melody_alarm[0])); }
#else
void playMelodyAck()
{}
void playMelodyNak()
{}
void playMelodyAlarm()
{}
#endif
// opens door for "ms" milliseconds
void openDoorForTime(int ms)
{
digitalWrite(doorLock, HIGH);
playMelodyAck();
delay(ms);
digitalWrite(doorLock, LOW);
}
void readCard()
{
byte RequestCardStatus[] = { 0xAA, 0x00, 0x03, 0x25, 0x26, 0x00, 0x00, 0xBB };
byte NoCardResponse[] = { 0xAA, 0x00, 0x02, 0x01, 0x83, 0x80, 0xBB };
byte buf[16];
int i;
// write query to serial
for (i = 0; i < 8; i++)
rfidSerial.print(RequestCardStatus[i]);
// wait for the result, while reblinking
delay(100);
digitalWrite(statusLed, statusState);
delay(150);
// read input from serial into the buffer
i = 0;
while (rfidSerial.available() > 0) {
if (i < sizeof(buf)) {
buf[i] = rfidSerial.read();
}
++i;
}
// no card is detected
if (!memcmp(buf, NoCardResponse, 7)) {
comSerial.write("NOCARD\n");
}
// card detected - message has form AA0006xxxxxxxxxxxxxxBB where xxx... is the card ID
if (buf[0] == 0xAA && buf[1] == 0x00 && buf[2] == 0x06 && buf[10] == 0xBB) {
bool known = false;
// go through ACL
for (int i = 0; i < sizeof(ACL)/sizeof(ACL[0]); ++i) {
// if there is a match - print known card ...
if (!memcmp(ACL[i].cardId, buf+3, 7)) {
known = true;
comSerial.write("CARD ");
comSerial.write(ACL[i].nick);
comSerial.write("\n");
// ... and open door for 5s
openDoorForTime(5000);
break;
}
}
// card was not found in the ACL
if (!known) {
comSerial.write("CARD UNKNOWN ");
for (int i = 0; i < 7; ++i) {
if (buf[i+3] <= 0xF) comSerial.write("0");
comSerial.print(buf[i+3], HEX);
}
comSerial.write("\n");
playMelodyNak();
}
} else {
// make cycle interval 1s
delay(750);
}
}
void readSerial()
{
if (comSerial.available()) {
unsigned char cmd = comSerial.read();
unsigned char data = comSerial.read();
switch (cmd) {
case 's': statusState = data - '0'; statusStateOverride = 1; break;
case 'v': videoState = data - '0'; videoStateOverride = 1; break;
case 'a': playMelodyAlarm(); /* data ignored */ break;
}
}
}
void setup()
{
pinMode(magnetPin, INPUT);
digitalWrite(magnetPin, HIGH);
pinMode(doorLock, OUTPUT);
pinMode(soundPin, OUTPUT);
pinMode(statusLed, OUTPUT);
pinMode(videoLed, OUTPUT);
pinMode(statusBtn, INPUT);
digitalWrite(statusBtn, HIGH);
pinMode(videoBtn, INPUT);
digitalWrite(videoBtn, HIGH);
rfidSerial.begin(9600);
comSerial.begin(9600);
}
void loop()
{
/* Check buttons. */
int statusStateNew = !digitalRead(statusBtn);
int videoStateNew = !digitalRead(videoBtn);
/* Cancel override if button is in same state as official state. */
if (statusState == statusStateNew) statusStateOverride = 0;
if (videoState == videoStateNew) videoStateOverride = 0;
/* Update state based on buttons and override. */
if (!statusStateOverride) statusState = statusStateNew;
if (!videoStateOverride) videoState = videoStateNew;
int doorOpen = digitalRead(magnetPin);
digitalWrite(statusLed, !statusState); // will be turned back in readCard()
digitalWrite(videoLed, videoState);
comSerial.print(statusState, DEC); comSerial.write(" ");
comSerial.print(videoState, DEC); comSerial.write(" ");
comSerial.print(doorOpen, DEC); comSerial.write(" ");
readCard();
readSerial();
}