dfr0258 and softwareserial.h

I am having some issues with this shield. I need to some RFID tags from the serial interface.  using standard code on the serial I do read the tags.(I will post a copy of the working code beneath as “Working Code” 

When I add some more things to the arduino Mega, like RTC, SD CARD, and GSM Modules, I need to use softwareserial.h and then I cannot get this to read the RFID UID'd anymore.

I suspect that I need to define pins for the RFID to be read, as I now have multiple serials to use, as you wil see below in “Non Working Code”.

I cannot figure out what the pins are for the shield on which to read the Serial communications on the RS232.

Can some one please help.

Working Code:

/*

# This code assumes that the DFR0258 Serial Shield is used.

# Editor : Anton Kading

# Date : 2023.04.12

# Ver : 0.1

# Product: RS232 shield

# SKU : DFR0258

# RTC: :DFROBOT 1307

# SKU :DFR0151

{

Serial.begin(9600); //init serial

pinMode(led,OUTPUT);

}

void loop()

{

int temp; //serial data temporary cache

if(Serial.available()) //if serial receives data

{

temp=Serial.read(); //store the received data temporarily

if(temp=='V'){

digitalWrite(led,1-digitalRead(led)); //change the LED statu if receiving the char "V".

Serial.println(temp); //reply OK to show that the char "V" has been received and the LED statu also has been changed

}

}

}

*/

char incomingRFID; // Access storage to store incoming RFID tokens

void setup() {

Serial.begin(9600); //init serial

}

void loop()

{

while (Serial.available() > 0) {

incomingRFID = Serial.read();

Serial.print(incomingRFID);

//Serial.print(' ');

}

Serial.println();

delay(1000);

}

Non WORKING CODE:

// Required libraries

#include <Wire.h>

#include <SoftwareSerial.h>

#include <RTClib.h>

#include <SD.h>

#include <SPI.h>

// Pin definitions

#define RFID_RX_PIN 3

#define RFID_TX_PIN 2

#define SD_CS_PIN 53

#define LED_PIN 13

// Create the software serial ports

SoftwareSerial rfidSerial(RFID_RX_PIN, RFID_TX_PIN); // RFID reader connection

SoftwareSerial gsmSerial(2, 3); // GSM module connection

SoftwareSerial mySerial(10, 11); // Alternative serial connection for debugging

// Instantiate the Real Time Clock object

RTC_DS1307 rtc;

// File object to interact with the SD card

File dataFile;

// Location of the sheep farm

char location[] = "Sheep Farm 1";

int rfidStartTime = 5;

int rfidENDtime = 19;

int GSMsmsTime = 20;

int GSMfileSEND = 21;

// Variable to store unique RFID entries count

unsigned int Daily_Sheep_Count = 0;

void setup() {

// Set the LED pin as output

pinMode(LED_PIN, OUTPUT);

// Set up the serial connections

Serial.begin(9600);

rfidSerial.begin(9600);

gsmSerial.begin(9600);

// Initialize the I2C communication and RTC

Wire.begin();

rtc.begin();

// Initialize the SD card

SD.begin(SD_CS_PIN);

// Set the time if RTC is not running

if (!rtc.isrunning()) {

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

// Configure GSM module

gsmSerial.begin(9600);

delay(1000);

gsmSerial.println("AT+CMGF=1"); // Set to text mode

delay(1000);

gsmSerial.println("AT+CNMI=2,2,0,0,0"); // Route SMS to serial

delay(1000);

}

void loop() {

// Call the function to process sheep tags

processSheepTags();

// Get the current time

DateTime now = rtc.now();

// Read sheep tags during daytime (between 5:00 and 19:00 as defined by the integers above)

if (now.hour() >= rfidStartTime && now.hour() < rfidENDtime) {

readSheepTags();

} else {

// Process sheep tags and sleep for 24 hours during nighttime

processSheepTags();

delay(24 * 60 * 60 * 1000); // Sleep for 24 hours

}

// Check if it's 20:00 in the evening

if (now.hour() == GSMsmsTime && now.minute() == 0) {

GSM_SMS(Daily_Sheep_Count); // Send SMS at 20:00

delay(60000); // Wait for 1 minute to avoid sending multiple times at 20:00

}

// Check if it's 21:00

if (now.hour() == GSMfileSEND && now.minute() == 0) {

GSM_FILE_TRANSFER();

delay(60000); // Wait for a minute to avoid multiple transfers in a minute

}

delay(1000);

}

void readSheepTags() {

// Read RFID tags from the RFID reader

if (rfidSerial.available()) {

Serial.println("DEbug A");//...........................................................Debug Point

char incomingRFID = rfidSerial.read();

Serial.print(incomingRFID);

// If the incoming RFID tag is valid (starts with 'V')

if (incomingRFID == 'V') {

digitalWrite(LED_PIN, !digitalRead(LED_PIN)); // Toggle the LED

// Get the current time

DateTime now = rtc.now();

// Create a file name with the current date (e.g., "ddd.txt")

char fileName[20];

sprintf(fileName, "RawRFIDTAgs.txt");

// Open the file in write mode

dataFile = SD.open(fileName, FILE_WRITE);

// If the file is opened successfully, write the data

if (dataFile) {

dataFile.print(now.unixtime());

dataFile.print(", ");

dataFile.println(incomingRFID);

dataFile.close();

} else {

Serial.println("Failed to open the file");

}

}

}

}

void processSheepTags() {

// Open the file containing raw RFID tags

File dataFile = SD.open("RawRFIDTAgs.txt");

// Process the file if it's opened successfully

if (dataFile) {

String currentTag = "";

String prevTag = "";

Daily_Sheep_Count = 0;

// Read the file line by line

while (dataFile.available()) {

char ch = dataFile.read();

// When a new line is encountered, process the current tag

if (ch == '\n') {

if (currentTag != prevTag) {

Daily_Sheep_Count++; // Increment the sheep count

prevTag = currentTag;

}

currentTag = "";

} else {

currentTag += ch;

}

}

// Check for the last tag in the file

if (currentTag != prevTag) {

Daily_Sheep_Count++;

}

// Close the file

dataFile.close();

// Print the daily sheep count

Serial.print("Daily Sheep Count: ");

Serial.println(Daily_Sheep_Count);

} else {

Serial.println("1 Error opening RawRFIDTAgs.txt");

}

}

void GSM_SMS(int Daily_Sheep_Count) {

// Send an SMS with the daily sheep count

mySerial.print("AT+CMGS=\"+31615553214\"\r");

delay(1000);

mySerial.print("Daily sheep count: ");

mySerial.print(Daily_Sheep_Count);

mySerial.write(26); // End the message with Ctrl+Z

delay(1000);

}

void GSM_FILE_TRANSFER() {

// Send the file containing raw RFID tags using GSM module. Still need to incorporate Username and Password

gsmSerial.println("AT+CGSOCKCONT=1,\"IP\",\"internet\"");

delay(2000);

gsmSerial.println("AT+CSOCKSETPN=1");

delay(2000);

gsmSerial.println("AT+CIPMODE=0");

delay(2000);

gsmSerial.print("AT+NETOPEN=,,\"");

gsmSerial.write(34);

gsmSerial.print("192.168.178.91");

gsmSerial.write(34);

gsmSerial.println(",80");

delay(2000);

gsmSerial.println("AT+CIPOPEN=0,\"TCP\",\"192.168.178.91\",80");

delay(2000);

gsmSerial.println("AT+CIPSEND=0");

// Open the file containing raw RFID tags

File dataFile = SD.open("RawRFIDTAgs.txt", FILE_READ);

// Send the file if it's opened successfully

if (dataFile) {

while (dataFile.available()) {

gsmSerial.write(dataFile.read());

}

dataFile.close();

} else {

Serial.println("2 Error opening RawRFIDTAgs.txt");

}

gsmSerial.println("AT+CIPCLOSE=0");

delay(2000);

gsmSerial.println("AT+NETCLOSE");

delay(2000);

}