Mengakses RFID ID-12 Menggunakan Arduino dan Interface Visual Basic 6.0

Mengakses RFID ID-12 Menggunakan Arduino dan Interface Visual Basic 6.0

              Kali ini saya akan menjelaskan mengenai bagaimana cara mengekases RFID Reader ID-12 menggunakan Arduino dengan interface yaitu visual basic 6.0, jadi prinsip kerjanya yaitu mengambil data dari tag card kemudian dikirimkan ke komputer atau interface VB 6 menggunakan Arduino. jadi Arduino hanya berfungsi untuk mengambil data atau membaca data dari tag card yang selanjutnya dikirimkan ke komputer dan diolah di program interface. untuk lebih jelasnya berikut adalah program dan skemanya. 

 a. Arduino Mega

b. RFID ID-12

c. Program Arduino

 void setup() {
  Serial.begin(9600);                                 // connect to the serial port
}

void loop () {
  byte i = 0;
  byte val = 0;
  byte code[6];
  byte checksum = 0;
  byte bytesread = 0;
  byte tempbyte = 0;

  if(Serial.available() > 0) {
    if((val = Serial.read()) == 2) {                  // check for header
      bytesread = 0;
      while (bytesread < 12) {                        // read 10 digit code + 2 digit checksum
        if( Serial.available() > 0) {
          val = Serial.read();
          if((val == 0x0D)||(val == 0x0A)||(val == 0x03)||(val == 0x02)) { // if header or stop bytes before the 10 digit reading
            break;                                    // stop reading
          }

          // Do Ascii/Hex conversion:
          if ((val >= '0') && (val <= '9')) {
            val = val - '0';
          } else if ((val >= 'A') && (val <= 'F')) {
            val = 10 + val - 'A';
          }

          // Every two hex-digits, add byte to code:
          if (bytesread & 1 == 1) {
            // make some space for this hex-digit by
            // shifting the previous hex-digit with 4 bits to the left:
            code[bytesread >> 1] = (val | (tempbyte << 4));

            if (bytesread >> 1 != 5) {                // If we're at the checksum byte,
              checksum ^= code[bytesread >> 1];       // Calculate the checksum... (XOR)
            };
          } else {
            tempbyte = val;                           // Store the first hex digit first...
          };

          bytesread++;                                // ready to read next digit
        }
      }

      // Output to Serial:

      if (bytesread == 12) {                          // if 12 digit read is complete
        //Serial.print("5-byte code: ");
        for (i=0; i<5; i++) {
          if (code[i] < 16) Serial.print("0");
          Serial.print(code[i], HEX);
         // Serial.print(" ");
        }
        Serial.println();

        //Serial.print("Checksum: ");
        //Serial.print(code[5], HEX);
        //Serial.println(code[5] == checksum ? " -- passed." : " -- error.");
        //Serial.println();
      }

      bytesread = 0;
    }
  }
}

 d. Program Interface VB 6.0

 

FORM 1

Private Sub cmdConnect_Click()

Dim port As Integer
On Error GoTo errcode

If MSComm1.PortOpen = False Then
    MSComm1.CommPort = Combo1.ListIndex + 1
    MSComm1.RThreshold = 1
    MSComm1.InputLen = 0
    MSComm1.Settings = Combo2.List(Combo2.ListIndex) & ",N,8,1"
    MSComm1.PortOpen = True
cmdConnect.Enabled = False
cmdDisconnect.Enabled = True
End If

Exit Sub

errcode:
    MsgBox "Port Salah !", vbOKOnly, "Peringatan"
    Combo1.SetFocus


End Sub

Private Sub cmdDisconnect_Click()
If MSComm1.PortOpen = True Then
    MSComm1.PortOpen = False
End If
cmdConnect.Enabled = True
cmdDisconnect.Enabled = False

End Sub

Private Sub Command3_Click()
Form2.Show

End Sub

Private Sub Command4_Click()
Unload Me
Unload Form2

End Sub

Private Sub Form_Load()
Dim i As Byte
For i = 1 To 16
Combo1.AddItem (i)
Next i
With Combo2
        .AddItem "2400"
        .AddItem "4800"
        .AddItem "9600"
        .AddItem "19200"
        .AddItem "38400"
        .AddItem "56600"
       
End With
Timer1.Enabled = False
cmdConnect.Enabled = True
cmdDisconnect.Enabled = False

End Sub

Private Sub Timer1_Timer()
MSComm1_OnComm
End Sub
'=======================================

FORM 2

Private Sub Form_Load()
 Form2.Timer2.Enabled = True

End Sub


Private Sub Timer2_Timer()
Dim data As String
        Dim buffer As String
        If Form1.MSComm1.InBufferCount > 0 Then
       
       
        buffer = Form1.MSComm1.Input
        data = Mid$(buffer, 2, 12)

        Form2.Text1.Text = data
        'Form1.MSComm1.Output = "A" & Chr$(13)
             
        End If

End Sub
'=======================================




e. VIDEO HASILNYA