Mobile RFID Reader - a Particle Maker Kit Project

//  Project:        Mobile RFID Attendence register
//                  A project by FireFli (PTY) LTD
//  Date:           October 2019
//  Compiled by:    Friedl Basson
//  Details:        Scan for UID's from RFID cards and posting via webhooks to, UbiDots, mySQL DB or Google Sheets
//                  UPDATE: Display Cardholder name as apposed to UID.
//  Credits:        Special thanks to the Particle community for assisting and making this project possible!
//  Firmware:       V2.1.2


//System Mode// - comment out if you will be settng up WiFi via Particle app and do not need to connect to another Wireless network aftwer the fact
//SYSTEM_MODE(SEMI_AUTOMATIC);

// This #include statement was automatically added by the Particle IDE.
#include "RFID.h"
#include <Ubidots.h>

/* Define the pins used for the SS (SDA) and RST (reset) pins for BOTH hardware and software SPI */
#define SS_PIN      A2
#define RST_PIN     D2

/* Define the pins used for the DATA OUT (MOSI), DATA IN (MISO) and CLOCK (SCK) pins for SOFTWARE SPI ONLY */
#define MOSI_PIN    D3
#define MISO_PIN    D4
#define SCK_PIN     D5

//Initialising RGB START  - RGB LED and buzzer is used as system status indicator
int redPin = D6;
int greenPin = D1;
int bluePin = D0;
int buzzPin = D7;
//Initializing RGB END

/* Create an instance of the RFID library */
#if defined(_USE_SOFT_SPI_)
RFID RC522(SS_PIN, RST_PIN, MOSI_PIN, MISO_PIN, SCK_PIN);    // Software SPI
#else
RFID RC522(SS_PIN, RST_PIN);                                 // Hardware SPI
#endif
const char* WEBHOOK_NAME = "YOU_WEBHOOK_NAME";
Ubidots ubidots("webhook", UBI_PARTICLE);

// List of Card UIDs
char* allowedTags[] = {
"D1 DA 06 20", // Test Tag
"10 C9 A0 9F",
"0B C6 0C 1B",
"81 5D 07 3A",
};

// List of names to associate with the matching tag IDs
char* tagName[] = {
"VISITOR1", // Test Tag
"VISITOR2",
"VISITOR3",
"VISITOR4",
,
};
String str;
char tagValue[16];
int numberOfTags = 4; //Total number of tags used
void setup()
{
Serial.begin(9600);
//  WiFi.listen();
pinMode(redPin, OUTPUT);
pinMode(greenPin, OUTPUT);
pinMode(bluePin, OUTPUT);
pinMode(buzzPin, OUTPUT);

// Setting credentials for new WiFi Connection
/*
This section is only needed if you want to connect to a new WiFi Network after initial setup
This will only work if current WiFi credentials have been cleared.
Code will run ONLY ONCE on startup and set new crediatials specified.  Once new credentials is set, this code will not run again.
*/
WiFi.on();
if (!WiFi.hasCredentials()) {
WiFi.setCredentials("SSID", "PASS", WPA2, WLAN_CIPHER_AES);      /SSID//PASSWORD//WPA2/WLAN_CIPHER_AES
}
WiFi.connect();
waitUntil(WiFi.ready);
Particle.connect();
#if !defined(_USE_SOFT_SPI_)
/* Enable the HW SPI interface */
SPI.setDataMode(SPI_MODE0);
SPI.setBitOrder(MSBFIRST);
SPI.setClockDivider(SPI_CLOCK_DIV8);
SPI.begin();
#endif
/* Initialise the RFID reader */
RC522.init();
delay(5000);
digitalWrite(bluePin, HIGH);
digitalWrite(greenPin, HIGH);
digitalWrite(redPin, LOW);
}
void loop()
{
uint8_t i;
/* Has a card been detected? */
if (RC522.isCard())
{
/* If so then get its serial number */
RC522.readCardSerial();
char CID[16];
snprintf(CID, sizeof(CID)
, "%02X %02X %02X %02X"
, RC522.serNum[0]
, RC522.serNum[1]
, RC522.serNum[2]
, RC522.serNum[3]
);
int iPos = findTag(CID);
// Webhooks//
/*
RFID_WP = your webhook name
str = your data you want to publish
PRIVATE or PUBLIC
*/
//            Particle.publish("RFID_WP", str, PRIVATE);          //Publish Data to Wordpress DB
//            Particle.publish("XLS", str, PRIVATE);              // Publish Data to Google Sheets
// /* Adds context key-value pairs */
if (iPos >= 0)
{
ubidots.addContext("UID", tagName[iPos]);  //str  //tagValue
}
else
{
ubidots.addContext("UID", CID);  //str  //tagValue
}
char* context = (char *) malloc(sizeof(char) * 60);
/* Builds the context with the array above to send to Ubidots */
ubidots.getContext(context);
ubidots.add("UID", 1, context);  // Change for your variable name
bool bufferSent = false;
bufferSent = ubidots.send(WEBHOOK_NAME, PUBLIC);  // Will use particle webhooks to send data
delay(500);
digitalWrite(buzzPin, LOW);
digitalWrite(bluePin, LOW);
delay(750);
digitalWrite(bluePin, HIGH);
}
else if (RC522.isCard())
{
RC522.readCardSerial();
char CID[16];
snprintf(CID, sizeof(CID)
, "%02X %02X %02X %02X"
, RC522.serNum[0]
, RC522.serNum[1]
, RC522.serNum[2]
, RC522.serNum[3]
);
digitalWrite(bluePin, LOW);
digitalWrite(greenPin, LOW);
digitalWrite(redPin, HIGH);
delay(1000);
digitalWrite(bluePin, HIGH);
digitalWrite(greenPin, HIGH);
digitalWrite(redPin, LOW);
digitalWrite(buzzPin, LOW);
}
delay(500);
}
int findTag(char tagValue[16])
{
for (int thisCard = 0; thisCard < numberOfTags; thisCard++) {
// Check if the tag value matches this row in the tag database
if(strcmp(tagValue, allowedTags[thisCard]) == 0)
{
// The row in the database starts at 0, so add 1 to the result so
// that the card ID starts from 1 instead (0 represents "no match")
return(thisCard);
}
}
// If we don't find the tag return a tag ID of 0 to show there was no match
return -1;
}