Thank you for your reply.
I'm developing with arduino IDE, so the library is not available and I want to know the packet contents for Tx Rxing the command with CR9HF SPI communication.
Take the PN532 module as an example.
This code is a code that can read information from the T-money Card.
void loop(void) {
uint8_t success;
uint8_t responseLength = 64;
success = nfc.inListPassiveTarget();
if (success) {
Serial.println("Found something!");
uint8_t cardInfo[responseLength];
uint8_t cardNumSize = 0;
uint8_t selectApdu[] = { 0x00, 0xA4, 0x00, 0x00, 0x02, 0x42, 0x00 };
success = nfc.inDataExchange(selectApdu, sizeof(selectApdu), cardInfo, &responseLength);
if (success) {
Serial.print("responseLength: "); Serial.println(responseLength);
nfc.PrintHexChar(cardInfo, responseLength);
if (responseLength >= 24) {
Serial.print("card number : "); nfc.PrintHexChar(cardInfo + 8, 8);
Serial.print("card date : "); nfc.PrintHexChar(cardInfo + 21, 4);
}
}
uint8_t balance[responseLength];
uint8_t balanceApdu[] = { 0x90, 0x4C, 0x00, 0x00, 0x04 } ;
success = nfc.inDataExchange(balanceApdu, sizeof(balanceApdu), balance, &responseLength);
if (success) {
Serial.print("responseLength: "); Serial.println(responseLength);
nfc.PrintHexChar(balance, responseLength);
if (responseLength >= 4) {
uint32_t money = balance[0] * 256 * 256 * 256 + balance[1] * 256 * 256 + balance[2] * 256 + balance[3];
delay(2000);
Serial.print("money : "); Serial.println(money);
}
}
}
else {
}
delay(100);
}
=============================result===========
Waiting for an ISO14443A Card ...
Found something!
responseLength: 53
6F 31 B0 2F 00 10 01 08 12 12 00 11 90 27 40 90 02 80 95 46 48 20 14 04 18 20 19 04 17 01 00 00 07 A1 20 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90 00 o1./.........'@....FH ... ........ P.................
card number : 12 12 00 11 90 27 40 90 .....'@.
card date : 20 14 04 18 ...
responseLength: 6
00 00 06 36 90 00 ...6..
money : 1590
This is the code I tested after purchasing pn532 myself.
As such, we are currently making and implementing packets in hex form through SPI communication in the arduino IDE development environment with CR95HF module. The above type is necessary for the charging type charger, but I asked for your advice because there is no clear data even when referring to the data sheet.
Here's an example of how to implement it.
Here is an example of Tag ID read.
When implementing with current SPI communication, I do the following.
Txdata[50]=;
Txdata[0] = 0x00;
Txdata[1] = 0x04; // cmd
Txdata[2] = 0x02;//data field length
Txdata[3] = 0x26;
Txdata[4] = 0x07;
readCmd(); //Read response
Txdata[0] = 0x00;
Txdata[1] = 0x04; // cmd
Txdata[2] = 0x03;//data field length
Txdata[3] = 0x93;
Txdata[4] = 0x20;
Txdata[5] = 0x08;
readCmd(); //Read response
if (res == 0x80) {
for (j = 0; j < dataNum - 4; j++) {
ID += String(rdata[j], HEX);
}
TAG_flag = 1;
}
else {
TAG_flag = 0;
Select_ISO_IEC_18092_Protocol();
}
}
When you read the Tag ID, you select the ISO protocol and go through that process like the code above to read the ID.
So to read information from the T-money Card like that example, you need information about what packets you send and receive.
