TYT AD
New member
C++:
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <SPI.h>
#include <MFRC522.h>
#include <HTTPSRedirect.h>
#include<Wire.h>
#include<LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
//---------------------------------------------------------------------------------------------------------
// Enter Google Script Deployment ID:
const char *GScriptId = "ENTER_DEPLOYMENT_ID";
//---------------------------------------------------------------------------------------------------------
// Enter network credentials:
const char* ssid = "ENTER_WIFI_SSID";
const char* password = "ENTER_WIFI_PASS";
// Enter command (insert_row or append_row) and your Google Sheets sheet name (default is Sheet1):
String payload_base = "{\"command\": \"insert_row\", \"sheet_name\": \"Sheet1\", \"values\": ";
String payload = "";
// Google Sheets setup (do not edit)
const char* host = "script.google.com";
const int httpsPort = 443;
const char* fingerprint = "";
String url = String("/macros/s/") + GScriptId + "/exec";
HTTPSRedirect* client = nullptr;
// Declare variables that will be published to Google Sheets
String student_id;
int blocks[] = {4,5,6,8,9};
#define total_blocks (sizeof(blocks) / sizeof(blocks[0]))
#define RST_PIN 0 //D3
#define SS_PIN 2 //D4
#define BUZZER 4 //D2
MFRC522 mfrc522(SS_PIN, RST_PIN);
MFRC522::MIFARE_Key key;
MFRC522::StatusCode status;
/* Be aware of Sector Trailer Blocks */
int blockNum = 2;
/* Create another array to read data from Block */
/* Legthn of buffer should be 2 Bytes more than the size of Block (16 Bytes) */
byte bufferLen = 18;
byte readBlockData[18];
/****************************************************************************************************
* setup Function
****************************************************************************************************/
void setup() {
//----------------------------------------------------------
Serial.begin(9600);
delay(10);
Serial.println('\n');
//----------------------------------------------------------
SPI.begin();
//----------------------------------------------------------
//initialize lcd screen
lcd.init();
// turn on the backlight
lcd.backlight();
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Connecting to");
lcd.setCursor(0,1); //col=0 row=0
lcd.print("WiFi...");
//----------------------------------------------------------
// Connect to WiFi
WiFi.begin(ssid, password);
Serial.print("Connecting to ");
Serial.print(ssid); Serial.println(" ...");
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.print(".");
}
Serial.println('\n');
Serial.println("Connection established!");
Serial.print("IP address:\t");
Serial.println(WiFi.localIP());
//----------------------------------------------------------
// Use HTTPSRedirect class to create a new TLS connection
client = new HTTPSRedirect(httpsPort);
client->setInsecure();
client->setPrintResponseBody(true);
client->setContentTypeHeader("application/json");
//----------------------------------------------------------
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Connecting to");
lcd.setCursor(0,1); //col=0 row=0
lcd.print("Google ");
delay(5000);
//----------------------------------------------------------
Serial.print("Connecting to ");
Serial.println(host);
//----------------------------------------------------------
// Try to connect for a maximum of 5 times
bool flag = false;
for(int i=0; i<5; i++){
int retval = client->connect(host, httpsPort);
//*************************************************
if (retval == 1){
flag = true;
String msg = "Connected. OK";
Serial.println(msg);
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print(msg);
delay(2000);
break;
}
else
Serial.println("Connection failed. Retrying...");
}
if (!flag){
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Connection fail");
Serial.print("Could not connect to server: ");
Serial.println(host);
delay(5000);
return;
}
delete client; // delete HTTPSRedirect object
client = nullptr; // delete HTTPSRedirect object
}
/****************************************************************************************************
* loop Function
****************************************************************************************************/
void loop() {
static bool flag = false;
if (!flag){
client = new HTTPSRedirect(httpsPort);
client->setInsecure();
flag = true;
client->setPrintResponseBody(true);
client->setContentTypeHeader("application/json");
}
if (client != nullptr){
if (!client->connected())
{client->connect(host, httpsPort);}
}
else{Serial.println("Error creating client object!");}
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Scan your Tag");
/* Initialize MFRC522 Module */
mfrc522.PCD_Init();
/* Look for new cards */
/* Reset the loop if no new card is present on RC522 Reader */
if ( ! mfrc522.PICC_IsNewCardPresent()) {return;}
/* Select one of the cards */
if ( ! mfrc522.PICC_ReadCardSerial()) {return;}
ReadDataFromBlock(blocks[0], readBlockData); //student id
data = String((char*)readBlockData); data.trim();
student_id = data;
//----------------------------------------------------------------
ReadDataFromBlock(blocks[1], readBlockData); //first name
data = String((char*)readBlockData); data.trim();
first_name = data;
ReadDataFromBlock(blocks[2], readBlockData); //last name
data = String((char*)readBlockData); data.trim();
last_name = data;
ReadDataFromBlock(blocks[3], readBlockData); //phone number
data = String((char*)readBlockData); data.trim();
phone_number = data;
ReadDataFromBlock(blocks[4], readBlockData); //address
data = String((char*)readBlockData); data.trim();
address = data; data = "";
values = "\"" + student_id + ",";
values += first_name + ",";
values += last_name + ",";
values += phone_number + ",";
values += address + "\"}";
for (byte i = 0; i < total_blocks; i++) {
ReadDataFromBlock(blocks[i], readBlockData);
if(i == 0){
data = String((char*)readBlockData);
data.trim();
student_id = data;
values = "\"" + data + ",";
}
else if(i == total_blocks-1){
data = String((char*)readBlockData);
data.trim();
values += data + "\"}";
}
else{
data = String((char*)readBlockData);
data.trim();
values += data + ",";
}
}
// Create json object string to send to Google Sheets
// values = "\"" + value0 + "," + value1 + "," + value2 + "\"}"
payload = payload_base + values;
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Publishing Data");
lcd.setCursor(0,1); //col=0 row=0
lcd.print("Please Wait...");
// Publish data to Google Sheets
Serial.println("Publishing data...");
Serial.println(payload);
if(client->POST(url, host, payload)){
// do stuff here if publish was successful
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Student ID: "+student_id);
lcd.setCursor(0,1); //col=0 row=0
lcd.print("Present");
}
//----------------------------------------------------------------
else{
// do stuff here if publish was not successful
Serial.println("Error while connecting");
lcd.clear();
lcd.setCursor(0,0); //col=0 row=0
lcd.print("Failed.");
lcd.setCursor(0,1); //col=0 row=0
lcd.print("Try Again");
}
//----------------------------------------------------------------
// a delay of several seconds is required before publishing again
delay(5000);
}
/****************************************************************************************************
*
****************************************************************************************************/
/****************************************************************************************************
* ReadDataFromBlock() function
****************************************************************************************************/
void ReadDataFromBlock(int blockNum, byte readBlockData[])
{
//----------------------------------------------------------------------------
/* Prepare the ksy for authentication */
/* All keys are set to FFFFFFFFFFFFh at chip delivery from the factory */
for (byte i = 0; i < 6; i++) {
key.keyByte[i] = 0xFF;
}
//----------------------------------------------------------------------------
/* Authenticating the desired data block for Read access using Key A */
status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, blockNum, &key, &(mfrc522.uid));
//----------------------------------------------------------------------------s
if (status != MFRC522::STATUS_OK){
Serial.print("Authentication failed for Read: ");
Serial.println(mfrc522.GetStatusCodeName(status));
return;
}
//----------------------------------------------------------------------------
else {
Serial.println("Authentication success");
}
//----------------------------------------------------------------------------
/* Reading data from the Block */
status = mfrc522.MIFARE_Read(blockNum, readBlockData, &bufferLen);
if (status != MFRC522::STATUS_OK) {
Serial.print("Reading failed: ");
Serial.println(mfrc522.GetStatusCodeName(status));
return;
}
//----------------------------------------------------------------------------
else {
readBlockData[16] = ' ';
readBlockData[17] = ' ';
Serial.println("Block was read successfully");
}
//----------------------------------------------------------------------------
}