701 lines
25 KiB
C++
701 lines
25 KiB
C++
/* +---------+
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+----------------------------------->READ TAGS+^------------------------------------------+
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| +--------------------+ |
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| | | |
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| | | |
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| +----v-----+ +-----v----+ |
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| |MASTER TAG| |OTHER TAGS| |
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| +--+-------+ ++-------------+ |
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| | | | |
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| | | | |
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| +-----v---+ +----v----+ +----v------+ |
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| +------------+READ TAGS+---+ |KNOWN TAG| |UNKNOWN TAG| |
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| | +-+-------+ | +-----------+ +------------------+ |
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| | | | | | |
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| +----v-----+ +----v----+ +--v--------+ +-v----------+ +------v----+ |
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| |MASTER TAG| |KNOWN TAG| |UNKNOWN TAG| |GRANT ACCESS| |DENY ACCESS| |
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| +----------+ +---+-----+ +-----+-----+ +-----+------+ +-----+-----+ |
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| | | | | |
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| +----+ +----v------+ +--v---+ | +--------------->
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+-------+EXIT| |DELETE FROM| |ADD TO| | |
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+----+ | EEPROM | |EEPROM| | |
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+-----------+ +------+ +-------------------------------+
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Typical pin layout used:
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-----------------------------------------------------------------------------------------
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MFRC522 Arduino Arduino Arduino Arduino Arduino
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Reader/PCD Uno/101 Mega Nano v3 Leonardo/Micro Pro Micro
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Signal Pin Pin Pin Pin Pin Pin
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-----------------------------------------------------------------------------------------
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RST/Reset RST 9 5 D9 RESET/ICSP-5 RST
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SPI SS SDA(SS) 10 53 D10 10 10
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SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16
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SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14
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SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15
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*/
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#include <EEPROM.h> // We are going to read and write PICC's UIDs from/to EEPROM
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#include <SPI.h> // RC522 Module uses SPI protocol
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#include <MFRC522.h> // Library for Mifare RC522 Devices
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#include <avr/wdt.h>
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/*
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Instead of a Relay you may want to use a servo. Servos can lock and unlock door locks too
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Relay will be used by default
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*/
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// #include <Servo.h>
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//#define COMMON_ANODE
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#ifdef COMMON_ANODE
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#define LED_ON LOW
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#define LED_OFF HIGH
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#else
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#define LED_ON HIGH
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#define LED_OFF LOW
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#endif
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#define ledView 13
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#define redLed 3 // Set Led Pins
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#define greenLed 6
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#define blueLed 5
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#define relay A2 //8 // Set Relay Pin
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#define wipeB 2 // Button pin for WipeMode
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#define button 7 // button exit
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bool relay_stt = false;
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bool sttRun = false;
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bool programMode = false; // initialize programming mode to false
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uint8_t successRead; // Variable integer to keep if we have Successful Read from Reader
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byte storedCard[4]; // Stores an ID read from EEPROM
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byte readCard[4]; // Stores scanned ID read from RFID Module
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byte masterCard[4]; // Stores master card's ID read from EEPROM
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// Create MFRC522 instance.
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#define SS_PIN 10
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#define RST_PIN 9
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MFRC522 mfrc522(SS_PIN, RST_PIN);
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bool Debug = false;
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///////////////////////////////////////// Setup ///////////////////////////////////
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void setup()
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{
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pinMode(13, OUTPUT);
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digitalWrite(13, LOW);
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//Arduino Pin Configuration
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pinMode(ledView, OUTPUT);
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pinMode(redLed, OUTPUT);
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pinMode(greenLed, OUTPUT);
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pinMode(blueLed, OUTPUT);
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pinMode(wipeB, INPUT_PULLUP); // Enable pin's pull up resistor
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pinMode(relay, OUTPUT);
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//Be careful how relay circuit behave on while resetting or power-cycling your Arduino
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digitalWrite(relay, HIGH); // Make sure door is locked
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delay(2000);
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digitalWrite(relay, LOW);
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delay(2000);
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digitalWrite(relay, HIGH); // Make sure door is locked
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delay(2000);
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digitalWrite(redLed, LED_OFF); // Make sure led is off
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digitalWrite(greenLed, LED_OFF); // Make sure led is off
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digitalWrite(blueLed, LED_OFF); // Make sure led is off
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digitalWrite(ledView, LOW);
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//Protocol Configuration
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Serial.begin(9600); // Initialize serial communications with PC
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/*
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SPI.begin(); // MFRC522 Hardware uses SPI protocol
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mfrc522.PCD_Init(); // Initialize MFRC522 Hardware
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if (Debug == true)
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{
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//If you set Antenna Gain to Max it will increase reading distance
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mfrc522.PCD_SetAntennaGain(mfrc522.RxGain_max);
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Serial.println(F("Access Control Example v0.1")); // For debugging purposes
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}
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ShowReaderDetails(); // Show details of PCD - MFRC522 Card Reader details
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//Wipe Code - If the Button (wipeB) Pressed while setup run (powered on) it wipes EEPROM
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if (digitalRead(wipeB) == LOW)
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{ // when button pressed pin should get low, button connected to ground
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digitalWrite(redLed, LED_ON); // Red Led stays on to inform user we are going to wipe
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if (Debug == 1)
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{
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Serial.println(F("Wipe Button Pressed"));
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Serial.println(F("You have 10 seconds to Cancel"));
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Serial.println(F("This will be remove all records and cannot be undone"));
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}
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bool buttonState = monitorWipeButton(10000); // Give user enough time to cancel operation
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if (buttonState == true && digitalRead(wipeB) == LOW)
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{ // If button still be pressed, wipe EEPROM
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// Serial.println(F("Starting Wiping EEPROM"));
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for (uint16_t x = 0; x < EEPROM.length(); x = x + 1)
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{ //Loop end of EEPROM address
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if (EEPROM.read(x) == 0)
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{ //If EEPROM address 0
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// do nothing, already clear, go to the next address in order to save time and reduce writes to EEPROM
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}
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else
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{
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EEPROM.write(x, 0); // if not write 0 to clear, it takes 3.3mS
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}
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}
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// Serial.println(F("EEPROM Successfully Wiped"));
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digitalWrite(redLed, LED_OFF); // visualize a successful wipe
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delay(200);
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digitalWrite(redLed, LED_ON);
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delay(200);
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digitalWrite(redLed, LED_OFF);
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delay(200);
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digitalWrite(redLed, LED_ON);
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delay(200);
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digitalWrite(redLed, LED_OFF);
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}
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else
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{
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// Serial.println(F("Wiping Cancelled")); // Show some feedback that the wipe button did not pressed for 15 seconds
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digitalWrite(redLed, LED_OFF);
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}
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}
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// Check if master card defined, if not let user choose a master card
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// This also useful to just redefine the Master Card
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// You can keep other EEPROM records just write other than 143 to EEPROM address 1
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// EEPROM address 1 should hold magical number which is '143'
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if (EEPROM.read(1) != 143)
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{
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if (Debug == 1)
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{
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Serial.println(F("No Master Card Defined"));
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Serial.println(F("Scan A PICC to Define as Master Card"));
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}
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do
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{
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successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
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digitalWrite(blueLed, LED_ON); // Visualize Master Card need to be defined
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delay(200);
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digitalWrite(blueLed, LED_OFF);
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delay(200);
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} while (!successRead); // Program will not go further while you not get a successful read
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for (uint8_t j = 0; j < 4; j++)
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{ // Loop 4 times
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EEPROM.write(2 + j, readCard[j]); // Write scanned PICC's UID to EEPROM, start from address 3
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}
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EEPROM.write(1, 143); // Write to EEPROM we defined Master Card.
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if (Debug == 1)
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{
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Serial.println(F("Master Card Defined"));
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}
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}
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if (Debug == 1)
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{
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Serial.println(F("-------------------"));
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Serial.println(F("Master Card's UID"));
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}
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for (uint8_t i = 0; i < 4; i++)
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{ // Read Master Card's UID from EEPROM
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masterCard[i] = EEPROM.read(2 + i); // Write it to masterCard
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if (Debug == 1)
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{
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Serial.print(masterCard[i], HEX);
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}
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}
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if (Debug == 1)
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{
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Serial.println("");
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Serial.println(F("-------------------"));
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Serial.println(F("Everything is ready"));
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Serial.println(F("Waiting PICCs to be scanned"));
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}
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cycleLeds(); // Everything ready lets give user some feedback by cycling leds
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// }
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// wdt_enable(WDTO_500MS);
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*/
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}
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///////////////////////////////////////// Main Loop ///////////////////////////////////
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void loop()
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{
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do
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{
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ReadButton();
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SerialRead();
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/*
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successRead = getID(); // sets successRead to 1 when we get read from reader otherwise 0
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// When device is in use if wipe button pressed for 10 seconds initialize Master Card wiping
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if (digitalRead(wipeB) == LOW)
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{ // Check if button is pressed
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// Visualize normal operation is iterrupted by pressing wipe button Red is like more Warning to user
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digitalWrite(redLed, LED_ON); // Make sure led is off
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digitalWrite(greenLed, LED_OFF); // Make sure led is off
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digitalWrite(blueLed, LED_OFF); // Make sure led is off
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// Give some feedback
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if (Debug == 1)
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{
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Serial.println(F("Wipe Button Pressed"));
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Serial.println(F("Master Card will be Erased! in 10 seconds"));
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}
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bool buttonState = monitorWipeButton(10000); // Give user enough time to cancel operation
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if (buttonState == true && digitalRead(wipeB) == LOW)
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{ // If button still be pressed, wipe EEPROM
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EEPROM.write(1, 0); // Reset Magic Number.
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if (Debug == 1)
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{
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Serial.println(F("Master Card Erased from device"));
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Serial.println(F("Please reset to re-program Master Card"));
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}
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while (1)
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;
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}
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// Serial.println(F("Master Card Erase Cancelled"));
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}
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if (programMode)
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{
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cycleLeds(); // Program Mode cycles through Red Green Blue waiting to read a new card
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}
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else
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{
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normalModeOn(); // Normal mode, blue Power LED is on, all others are off
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}
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CheckButton();
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} while (!successRead); //the program will not go further while you are not getting a successful read
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if (programMode)
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{
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if (isMaster(readCard))
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{ //When in program mode check First If master card scanned again to exit program mode
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// Serial.println(F("Master Card Scanned"));
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// Serial.println(F("Exiting Program Mode"));
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// Serial.println(F("-----------------------------"));
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programMode = false;
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return;
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}
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else
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{
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if (findID(readCard))
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{ // If scanned card is known delete it
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// Serial.println(F("I know this PICC, removing..."));
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deleteID(readCard);
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// Serial.println("-----------------------------");
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// Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
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}
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else
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{ // If scanned card is not known add it
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// Serial.println(F("I do not know this PICC, adding..."));
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writeID(readCard);
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// Serial.println(F("-----------------------------"));
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// Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
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}
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}
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}
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else
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{
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if (isMaster(readCard))
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{ // If scanned card's ID matches Master Card's ID - enter program mode
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programMode = true;
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// Serial.println(F("Hello Master - Entered Program Mode"));
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uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
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// Serial.print(F("I have ")); // stores the number of ID's in EEPROM
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// Serial.print(count);
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// Serial.print(F(" record(s) on EEPROM"));
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// Serial.println("");
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// Serial.println(F("Scan a PICC to ADD or REMOVE to EEPROM"));
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// Serial.println(F("Scan Master Card again to Exit Program Mode"));
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// Serial.println(F("-----------------------------"));
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}
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else
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{
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if (findID(readCard))
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{ // If not, see if the card is in the EEPROM
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// Serial.println(F("Welcome, You shall pass"));
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relay_stt = true;
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granted(4000); // Open the door lock for 300 ms
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ClearSerialdata();
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}
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else
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{ // If not, show that the ID was not valid
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// Serial.println(F("You shall not pass"));
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denied();
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}
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}
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}
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*/
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}
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// wdt_reset();
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//}
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///////////////////////////////////////// Access Granted ///////////////////////////////////
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void granted(uint16_t setDelay)
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{
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digitalWrite(blueLed, LED_OFF); // Turn off blue LED
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digitalWrite(redLed, LED_OFF); // Turn off red LED
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digitalWrite(greenLed, LED_ON); // Turn on green LED
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digitalWrite(relay, LOW); // Unlock door!
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digitalWrite(ledView, LOW);
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delay(setDelay); // Hold door lock open for given seconds
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digitalWrite(relay, HIGH); // Relock door
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digitalWrite(ledView, HIGH);
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delay(200); // Hold green LED on for a second
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}
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///////////////////////////////////////// Access Denied ///////////////////////////////////
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void denied()
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{
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digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
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digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
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digitalWrite(redLed, LED_ON); // Turn on red LED
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delay(1000);
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}
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///////////////////////////////////////// Get PICC's UID ///////////////////////////////////
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uint8_t getID()
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{
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// Getting ready for Reading PICCs
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if (!mfrc522.PICC_IsNewCardPresent())
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{ //If a new PICC placed to RFID reader continue
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return 0;
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}
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if (!mfrc522.PICC_ReadCardSerial())
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{ //Since a PICC placed get Serial and continue
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return 0;
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}
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// There are Mifare PICCs which have 4 byte or 7 byte UID care if you use 7 byte PICC
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// I think we should assume every PICC as they have 4 byte UID
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// Until we support 7 byte PICCs
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// Serial.println(F("Scanned PICC's UID:"));
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for (uint8_t i = 0; i < 4; i++)
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{ //
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readCard[i] = mfrc522.uid.uidByte[i];
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// Serial.print(readCard[i], HEX);
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}
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// Serial.println("");
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mfrc522.PICC_HaltA(); // Stop reading
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return 1;
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}
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int k;
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void ShowReaderDetails()
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{
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// Get the MFRC522 software version
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byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
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// Serial.print(F("MFRC522 Software Version: 0x"));
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// Serial.print(v, HEX);
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if (v == 0x91)
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// Serial.print(F(" = v1.0"));
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k = 0;
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else if (v == 0x92)
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// Serial.print(F(" = v2.0"));
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k = 1;
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else
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// Serial.print(F(" (unknown),probably a chinese clone?"));
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// Serial.println("");
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// When 0x00 or 0xFF is returned, communication probably failed
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if ((v == 0x00) || (v == 0xFF))
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{
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// Serial.println(F("WARNING: Communication failure, is the MFRC522 properly connected?"));
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// Serial.println(F("SYSTEM HALTED: Check connections."));
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// Visualize system is halted
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digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
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digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
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digitalWrite(redLed, LED_ON); // Turn on red LED
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while (true)
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; // do not go further
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}
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}
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///////////////////////////////////////// Cycle Leds (Program Mode) ///////////////////////////////////
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void cycleLeds()
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{
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digitalWrite(redLed, LED_OFF); // Make sure red LED is off
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digitalWrite(greenLed, LED_ON); // Make sure green LED is on
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digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
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delay(200);
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digitalWrite(redLed, LED_OFF); // Make sure red LED is off
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digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
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digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
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delay(200);
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digitalWrite(redLed, LED_ON); // Make sure red LED is on
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digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
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digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
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delay(200);
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}
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//////////////////////////////////////// Normal Mode Led ///////////////////////////////////
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void normalModeOn()
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{
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digitalWrite(blueLed, LED_ON); // Blue LED ON and ready to read card
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digitalWrite(redLed, LED_OFF); // Make sure Red LED is off
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digitalWrite(greenLed, LED_OFF); // Make sure Green LED is off
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digitalWrite(relay, HIGH); // Make sure Door is Locked
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digitalWrite(ledView, HIGH);
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}
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//////////////////////////////////////// Read an ID from EEPROM //////////////////////////////
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void readID(uint8_t number)
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{
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uint8_t start = (number * 4) + 2; // Figure out starting position
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for (uint8_t i = 0; i < 4; i++)
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{ // Loop 4 times to get the 4 Bytes
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storedCard[i] = EEPROM.read(start + i); // Assign values read from EEPROM to array
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}
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}
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///////////////////////////////////////// Add ID to EEPROM ///////////////////////////////////
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void writeID(byte a[])
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{
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if (!findID(a))
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{ // Before we write to the EEPROM, check to see if we have seen this card before!
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uint8_t num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
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uint8_t start = (num * 4) + 6; // Figure out where the next slot starts
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num++; // Increment the counter by one
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EEPROM.write(0, num); // Write the new count to the counter
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for (uint8_t j = 0; j < 4; j++)
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{ // Loop 4 times
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EEPROM.write(start + j, a[j]); // Write the array values to EEPROM in the right position
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}
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successWrite();
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// Serial.println(F("Succesfully added ID record to EEPROM"));
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}
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else
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{
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failedWrite();
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// Serial.println(F("Failed! There is something wrong with ID or bad EEPROM"));
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}
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}
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///////////////////////////////////////// Remove ID from EEPROM ///////////////////////////////////
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void deleteID(byte a[])
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{
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if (!findID(a))
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{ // Before we delete from the EEPROM, check to see if we have this card!
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failedWrite(); // If not
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// Serial.println(F("Failed! There is something wrong with ID or bad EEPROM"));
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}
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else
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{
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uint8_t num = EEPROM.read(0); // Get the numer of used spaces, position 0 stores the number of ID cards
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uint8_t slot; // Figure out the slot number of the card
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uint8_t start; // = ( num * 4 ) + 6; // Figure out where the next slot starts
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uint8_t looping; // The number of times the loop repeats
|
|
uint8_t j;
|
|
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that stores number of cards
|
|
slot = findIDSLOT(a); // Figure out the slot number of the card to delete
|
|
start = (slot * 4) + 2;
|
|
looping = ((num - slot) * 4);
|
|
num--; // Decrement the counter by one
|
|
EEPROM.write(0, num); // Write the new count to the counter
|
|
for (j = 0; j < looping; j++)
|
|
{ // Loop the card shift times
|
|
EEPROM.write(start + j, EEPROM.read(start + 4 + j)); // Shift the array values to 4 places earlier in the EEPROM
|
|
}
|
|
for (uint8_t k = 0; k < 4; k++)
|
|
{ // Shifting loop
|
|
EEPROM.write(start + j + k, 0);
|
|
}
|
|
successDelete();
|
|
// Serial.println(F("Succesfully removed ID record from EEPROM"));
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////// Check Bytes ///////////////////////////////////
|
|
bool checkTwo(byte a[], byte b[])
|
|
{
|
|
for (uint8_t k = 0; k < 4; k++)
|
|
{ // Loop 4 times
|
|
if (a[k] != b[k])
|
|
{ // IF a != b then false, because: one fails, all fail
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
///////////////////////////////////////// Find Slot ///////////////////////////////////
|
|
uint8_t findIDSLOT(byte find[])
|
|
{
|
|
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
|
|
for (uint8_t i = 1; i <= count; i++)
|
|
{ // Loop once for each EEPROM entry
|
|
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
|
|
if (checkTwo(find, storedCard))
|
|
{ // Check to see if the storedCard read from EEPROM
|
|
// is the same as the find[] ID card passed
|
|
return i; // The slot number of the card
|
|
}
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////// Find ID From EEPROM ///////////////////////////////////
|
|
bool findID(byte find[])
|
|
{
|
|
uint8_t count = EEPROM.read(0); // Read the first Byte of EEPROM that
|
|
for (uint8_t i = 1; i < count; i++)
|
|
{ // Loop once for each EEPROM entry
|
|
readID(i); // Read an ID from EEPROM, it is stored in storedCard[4]
|
|
if (checkTwo(find, storedCard))
|
|
{ // Check to see if the storedCard read from EEPROM
|
|
return true;
|
|
}
|
|
else
|
|
{ // If not, return false
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
///////////////////////////////////////// Write Success to EEPROM ///////////////////////////////////
|
|
// Flashes the green LED 3 times to indicate a successful write to EEPROM
|
|
void successWrite()
|
|
{
|
|
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
|
|
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
|
|
digitalWrite(greenLed, LED_OFF); // Make sure green LED is on
|
|
delay(200);
|
|
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
|
|
delay(200);
|
|
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
|
|
delay(200);
|
|
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
|
|
delay(200);
|
|
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
|
|
delay(200);
|
|
digitalWrite(greenLed, LED_ON); // Make sure green LED is on
|
|
delay(200);
|
|
}
|
|
|
|
///////////////////////////////////////// Write Failed to EEPROM ///////////////////////////////////
|
|
// Flashes the red LED 3 times to indicate a failed write to EEPROM
|
|
void failedWrite()
|
|
{
|
|
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
|
|
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
|
|
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
|
|
delay(200);
|
|
digitalWrite(redLed, LED_ON); // Make sure red LED is on
|
|
delay(200);
|
|
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
|
|
delay(200);
|
|
digitalWrite(redLed, LED_ON); // Make sure red LED is on
|
|
delay(200);
|
|
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
|
|
delay(200);
|
|
digitalWrite(redLed, LED_ON); // Make sure red LED is on
|
|
delay(200);
|
|
}
|
|
|
|
///////////////////////////////////////// Success Remove UID From EEPROM ///////////////////////////////////
|
|
// Flashes the blue LED 3 times to indicate a success delete to EEPROM
|
|
void successDelete()
|
|
{
|
|
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
|
|
digitalWrite(redLed, LED_OFF); // Make sure red LED is off
|
|
digitalWrite(greenLed, LED_OFF); // Make sure green LED is off
|
|
delay(200);
|
|
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
|
|
delay(200);
|
|
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
|
|
delay(200);
|
|
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
|
|
delay(200);
|
|
digitalWrite(blueLed, LED_OFF); // Make sure blue LED is off
|
|
delay(200);
|
|
digitalWrite(blueLed, LED_ON); // Make sure blue LED is on
|
|
delay(200);
|
|
}
|
|
|
|
////////////////////// Check readCard IF is masterCard ///////////////////////////////////
|
|
// Check to see if the ID passed is the master programing card
|
|
bool isMaster(byte test[])
|
|
{
|
|
return checkTwo(test, masterCard);
|
|
}
|
|
|
|
bool monitorWipeButton(uint32_t interval)
|
|
{
|
|
uint32_t now = (uint32_t)millis();
|
|
while ((uint32_t)millis() - now < interval)
|
|
{
|
|
// check on every half a second
|
|
if (((uint32_t)millis() % 500) == 0)
|
|
{
|
|
if (digitalRead(wipeB) != LOW)
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
// ADD Code
|
|
|
|
int stt;
|
|
int stt_old;
|
|
String input;
|
|
void ReadButton()
|
|
{
|
|
stt = digitalRead(button);
|
|
Serial.println(stt);
|
|
if (stt == 0 && stt_old == 1)
|
|
{
|
|
relay_stt = true;
|
|
}
|
|
else
|
|
{
|
|
relay_stt = false;
|
|
}
|
|
stt_old = stt;
|
|
}
|
|
// SD MASTER: 2B429622
|
|
// SD TEST: C9B09B6E
|
|
|
|
void SerialRead()
|
|
{
|
|
while (Serial.available() > 0)
|
|
{
|
|
input = Serial.readStringUntil('\r');
|
|
Serial.println(input);
|
|
if (input == "1")
|
|
{
|
|
Serial.println("open");
|
|
if (relay_stt == false)
|
|
{
|
|
relay_stt = true;
|
|
digitalWrite(13, HIGH);
|
|
}
|
|
ClearSerialdata();
|
|
}
|
|
else
|
|
{
|
|
digitalWrite(13, LOW);
|
|
}
|
|
}
|
|
ClearSerialdata();
|
|
}
|
|
void ClearSerialdata()
|
|
{
|
|
while (Serial.available() > 0)
|
|
{
|
|
char c = Serial.read();
|
|
}
|
|
}
|
|
void CheckButton()
|
|
{
|
|
if (relay_stt == true)
|
|
{
|
|
granted(4000); // Open the door lock for 300 ms
|
|
relay_stt = false;
|
|
ClearSerialdata();
|
|
}
|
|
else
|
|
{
|
|
digitalWrite(relay, HIGH); // Unlock door!
|
|
digitalWrite(ledView, HIGH);
|
|
relay_stt = false;
|
|
}
|
|
}
|