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rfid-blood.ino
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rfid-blood.ino
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/**
__ _____ _ __ __ _ __
/ / _ /_ _/ / \,' /,'_//// /
/ /,'o| / /___ / \,' // /_/ U /
/_/ |_,'/_//__//_/ /_/ |__/\_,'
Made by: Fernando Martin Garcia Del Ange
Built on: September 13th, 2019
*/
// Required Libraries
#include <Wire.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>
#include <SPI.h>
#include <MFRC522.h>
#include <LiquidCrystal_I2C.h>
/* ----------------------------------
MFRC522 Node
Reader/PCD MCU
Signal Pin Pin
----------------------------------
RST/Reset RST D1 (GPIO5)
SPI SS SDA(SS) D2 (GPIO4)
SPI MOSI MOSI D7 (GPIO13)
SPI MISO MISO D6 (GPIO12)
SPI SCK SCK D5 (GPIO14)
3.3V 3.3V 3.3V
GND GND GND
*/
#define RST_PIN 5
#define SS_PIN 4
#define BUZZER 15
#define LOCATION 115
// Global Variables
int mode = 1;
int hasBuzzed = 1;
int hasSent = 1;
// Internet Variables
const char *ssid = "BunkerDeBlacky";
const char *pass = "FE80BLACKY";
WiFiClient client;
ESP8266WebServer server(80);
//RFID Variables
MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class
MFRC522::MIFARE_Key key;
byte nuidPICC[4];
//Blood Bag PICC ID
String bloodbag = "";
LiquidCrystal_I2C lcd(0x27,16,2);
/**
Starts up the RFID Scanner
*/
void setup_rfid() {
SPI.begin();
rfid.PCD_Init();
for (byte i = 0; i < 6; i++) {
key.keyByte[i] = 0xFF;
}
lcd.setCursor(0,1);
lcd.print("RFID: Online!");
delay(2000);
}
/**
Connects to WiFi and Creates a Client on port 80
*/
void setup_wifi() {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Conn. to WiFi");
int curs = 0;
WiFi.begin(ssid, pass);
while (WiFi.status() != WL_CONNECTED) {
delay(300);
lcd.setCursor(curs,1);
lcd.print(".");
curs++;
}
lcd.clear();
lcd.setCursor(0,0);
lcd.print("WiFi: Connected!");
buzz(1);
server.on("/", handle_onConnect);
server.onNotFound(handle_onNotFound);
server.begin();
delay(2000);
}
/**
* Sets up the LCD and Shows a simple message
*/
void setup_lcd(){
Wire.begin(D3,D4);
lcd.begin();
lcd.home();
lcd.setCursor(0,0);
lcd.print("Right Donor v1.0");
lcd.setCursor(0,1);
lcd.print("IoT Tracker");
rightdonor_chime();
delay(5000);
}
/**
Setup procedure
*/
void setup() {
setup_lcd();
// put your setup code here, to run once:
Serial.begin(115200);
// Component Initialization
pinMode(BUZZER, OUTPUT);
// Flash Button change
pinMode(0,INPUT_PULLUP);
//Wireless initialization
setup_wifi();
setup_rfid();
}
/**
Serves / path
*/
void handle_onConnect() {
server.send(200, "text/html", bloodbag_read());
}
/**
Serves any other path
*/
void handle_onNotFound() {
server.send(404, "text/plain", "Not Found");
}
/**
Helper routine to make the buzzer make a sound
*/
void buzz(int m) {
for (int i = 0; i < m; i++) {
tone(BUZZER, 1000);
delay(200);
noTone(BUZZER);
delay(200);
}
}
/**
Helper routine to make the buzzer make a confirmation or error sound
1 => OK, 0 => NOT OK
*/
void confirmation_buzz(int res) {
if (res) {
tone(BUZZER, 500);
delay(200);
tone(BUZZER, 1000);
delay(100);
noTone(BUZZER);
delay(200);
} else {
tone(BUZZER, 1000);
delay(100);
tone(BUZZER, 500);
delay(100);
noTone(BUZZER);
delay(200);
}
}
/*
* Right Donor's Chime
*/
void rightdonor_chime(){
tone(BUZZER,500);
delay(200);
tone(BUZZER,300);
delay(200);
tone(BUZZER,400);
delay(200);
tone(BUZZER,800);
delay(200);
noTone(BUZZER);
delay(200);
}
/**
Main Program Loop
*/
void loop() {
// Buzz for mode
if (!--hasBuzzed) {
lcd.clear();
lcd.setCursor(0,0);
buzz(mode);
switch(mode){
case 1:
lcd.print(WiFi.localIP());
lcd.setCursor(0,1);
lcd.print("Scan RFID Tag");
break;
case 2:
lcd.print("Blood checkpoint");
lcd.setCursor(0,1);
lcd.print("Scan RFID Tag");
break;
}
}
if(digitalRead(0) == 0) {
confirmation_buzz(1);
if(mode == 1){
mode = mode + 1;
} else {
mode = mode - 1;
}
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Mode changed!");
lcd.setCursor(0,1);
lcd.print(mode);
hasBuzzed=1;
delay(6000);
}
//Main Switch
switch (mode) {
case 1:
server.handleClient();
rfid_read();
break;
case 2:
rfid_read();
break;
}
}
/**
POSTs to the Blockchain Server
*/
void checkpoint_send() {
if (WiFi.status() == WL_CONNECTED) {
HTTPClient http;
String postcode = "http://3.222.166.83/blood/move/" + bloodbag + "/" + LOCATION + "/user1";
http.begin(postcode);
int httpCode = http.POST("");
String payload = http.getString();
if(httpCode == 200){
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Success!");
lcd.setCursor(0,1);
lcd.print("Checkpoint added!");
} else {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Warning!");
lcd.setCursor(0,1);
lcd.print("Try again!");
}
Serial.println(httpCode);
Serial.println(payload);
http.end();
}
delay(3000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Blood checkpoint");
lcd.setCursor(0,1);
lcd.print("Scan RFID Tag");
}
/**
Reads the ID from the MiFare Tag
*/
void rfid_read() {
// Look for new cards
if ( ! rfid.PICC_IsNewCardPresent())
return;
// Verify if the NUID has been readed
if ( ! rfid.PICC_ReadCardSerial())
return;
Serial.print(F("PICC type: "));
MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
Serial.println(rfid.PICC_GetTypeName(piccType));
// Check is the PICC of Classic MIFARE type
if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Warning!");
lcd.setCursor(0,1);
lcd.print("Invalid Tag read");
confirmation_buzz(0);
return;
}
if (rfid.uid.uidByte[0] != nuidPICC[0] ||
rfid.uid.uidByte[1] != nuidPICC[1] ||
rfid.uid.uidByte[2] != nuidPICC[2] ||
rfid.uid.uidByte[3] != nuidPICC[3] ) {
Serial.println(F("A new card has been detected."));
// Store NUID into nuidPICC array
for (byte i = 0; i < 4; i++) {
nuidPICC[i] = rfid.uid.uidByte[i];
}
decode_id(rfid.uid.uidByte, rfid.uid.size);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Read new tag!");
lcd.setCursor(0,1);
lcd.print(bloodbag);
confirmation_buzz(1);
if (mode == 2) {
checkpoint_send();
}
} else {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Warning!");
lcd.setCursor(0,1);
lcd.print("Tag read before");
confirmation_buzz(0);
}
// Halt PICC
rfid.PICC_HaltA();
// Stop encryption on PCD
rfid.PCD_StopCrypto1();
delay(10000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Scan RFID Tag");
}
/**
Helper routine to dump a byte array as hex values to Serial.
*/
void printHex(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
Serial.print(buffer[i] < 0x10 ? " 0" : " ");
Serial.print(buffer[i], HEX);
}
}
/**
Helper routine to dump a byte array as dec values to Serial.
*/
void decode_id(byte *buffer, byte bufferSize) {
bloodbag = "";
for (byte i = 0; i < bufferSize; i++) {
if (i == 0) {
bloodbag += "";
} else {
bloodbag += buffer[i] < 0x10 ? " 0" : "-";
}
bloodbag += buffer[i];
}
}
/**
Returns the webpage to serve to the server
*/
String bloodbag_read() {
String ptr = "<html><head><title>Right Donor</title><link href=\"https://fonts.googleapis.com/css?family=Source+Sans+Pro&display=swap\" rel=\"stylesheet\"><style>body { background-color: black; text-align: center; color: white; font-family: Source Sans Pro, sans-serif;}div { position: fixed; top: 40%; left: 50%; /* bring your own prefixes */ transform: translate(-50%, -50%);}h1 {font-size: 6rem;}p {margin-top: 0px;}.button { background-color: #e7e7e7; color: black; border: none; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px;}.button { -webkit-transition-duration: 0.4s; /* Safari */ transition-duration: 0.4s;}.button:hover { background-color: white; /* Green */ color: black;}</style></head><body><div><h1>Right Donor</h1><p>RFID Scanner Server</p>";
if (bloodbag != "")
ptr += "<p>Tag ID: <b>"+bloodbag+"</b></p><a href=\"/\"><button class=\"button\">Reload</button></a></div></body></html>";
else
ptr += "<p><b>Put a new tag on the reader</b></p><a href=\"/\"><button class=\"button\">Reload</button></a></div></body></html>";
return ptr;
}