Write Data on T5577 with Arduino Uno and RDM6300

[jr_000]

Hello !

I'm trying to write data on programmable T5577 card by using an Arduino Uno and a RDM6300. My wiring is as follow :

I'm having a hard time to figure out how to set the T5577 to write mode ? And further than that, how to write into the card ? I've tried to monitor the status of the card with availableForWrite() but it always return '0'.

Any thought/suggestion would be very helpful !

[horace]

you state you have already written and tested some code
post it using code tags </> indicating the problems you have

[jr_000]

Hi Horace,

Here you go :

#include <AltSoftSerial.h>

AltSoftSerial T5577_Serial(8, 9); // RX : 8 - TX : 9

const int T5577_WRITE_COMMAND = 0xA0;  // Command to put the T5577 card into write mode

void setup() {
  Serial.begin(9600);
  
  T5577_Serial.begin(9600);

  Serial.println("Setup Completed !");
}

void loop() {
  char c;

  T5577_Serial.write(T5577_WRITE_COMMAND);

  if (T5577_Serial.availableForWrite()) {
    Serial.print("Available For Write !");

    //T5577_Serial.write("000000123456"); 
  }

  if (T5577_Serial.available()) {
    c = T5577_Serial.read();
    Serial.print(c);
  }
}

I've tried multiple values for "T5577_WRITE_COMMAND" but without success.

Also I've seen someone advise to use .flush() on another post, but not sure where to use it.

[horace]

can you give details of the T7755 board you are using
the AltSoftSerial() code of post #1 is using pins 8 and 9 but your diagram shows connections to pins 8 and 6

[jr_000]

The specs of the T5577 :
https://www.asiarfid.com/wp-content/uploads/2021/03/T5577-RFID-Card.pdf

For the pins allocation : I will update the pic, I've uploaded the wrong one, my bad.