#include <SPI.h>
#include "rfal_rf.h"
#include "rfal_nfc.h"
#include "rfal_rfst25r3911.h"
#include "ndef_class.h"
// Initialize SPI and RFAL instances
SPIClass dev_spi;
RfalRfST25R3911BClass rfst25r3911b(&dev_spi, 5, 17);
RfalNfcClass rfal_nfc(&rfst25r3911b);
NdefClass ndef(&rfal_nfc);
// Define constants
#define APDU_CMD_LEN 13
uint8_t SELECT_APDU[] = {}; // I can't disclose this for security reasons
ReturnCode err;
void setup() {
Serial.begin(115200);
dev_spi.begin();
// Initialize RFAL
err = rfal_nfc.rfalNfcInitialize();
if (err != ERR_NONE) {
Serial.println("RFAL initialization failed.");
while (true);
}
Serial.println("RFAL Initialized");
err = rfst25r3911b.rfalFieldOnAndStartGT();
if (err != ERR_NONE) {
Serial.println("Field activation failed.");
while (true);
}
Serial.println("Field On");
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, LOW);
}
void loop() {
rfal_nfc.rfalNfcWorker(); // RFAL worker
// Initialize as NFC-A poller
err = rfal_nfc.rfalNfcaPollerInitialize();
if (err != ERR_NONE) {
Serial.println("Poller initialization failed.");
delay(1000);
return;
}
Serial.println("Poller Initialized");
// Check for NFC-A tag presence
rfalNfcaSensRes sensRes;
err = rfal_nfc.rfalNfcaPollerCheckPresence(RFAL_14443A_SHORTFRAME_CMD_REQA, &sensRes);
if (err != ERR_NONE) {
Serial.println("No tag detected.");
delay(1000);
return;
}
Serial.println("NFC-A tag detected.");
// Perform collision resolution
bool collPending = false;
rfalNfcaSelRes selRes;
uint8_t nfcId[10];
uint8_t nfcIdLen;
err = rfal_nfc.rfalNfcaPollerSingleCollisionResolution(1, &collPending, &selRes, nfcId, &nfcIdLen);
if (err != ERR_NONE) {
Serial.println("Collision resolution failed.");
delay(1000);
return;
}
Serial.print("Tag selected. UID: ");
for (int i = 0; i < nfcIdLen; i++) {
Serial.print(nfcId[i], HEX);
Serial.print(" ");
}
Serial.println();
// Activate device
rfalIsoDepDevice isoDepDev;
err = rfal_nfc.rfalIsoDepPollAHandleActivation((rfalIsoDepFSxI)RFAL_ISODEP_FSDI_DEFAULT, RFAL_ISODEP_NO_DID, RFAL_BR_106, &isoDepDev);
if (err != ERR_NONE) {
Serial.print("Handle activation error: ");
Serial.println(err);
delay(1000);
return;
}
Serial.println("Device activated");
// Set up APDU parameters
rfalIsoDepApduTxRxParam param;
rfalIsoDepApduBufFormat txapdu;
rfalIsoDepApduBufFormat rxapdu;
uint16_t rxLen;
memcpy(txapdu.apdu, SELECT_APDU, sizeof(SELECT_APDU));
param.txBuf = &txapdu;
param.txBufLen = sizeof(SELECT_APDU);
param.rxBuf = &rxapdu;
param.rxLen = &rxLen;
param.FWT = isoDepDev.info.FWT;
param.dFWT = isoDepDev.info.dFWT;
param.FSx = RFAL_ISODEP_FSX_KEEP;
param.DID = isoDepDev.info.DID;
param.ourFSx = isoDepDev.info.FSx;
Serial.println("Sending APDU...");
err = rfal_nfc.rfalIsoDepStartApduTransceive(param);
if (err != ERR_NONE) {
Serial.print("Error in transceive: ");
Serial.println(err);
delay(1000);
return;
}
// Wait for response
do {
rfal_nfc.rfalNfcWorker();
err = rfal_nfc.rfalIsoDepGetApduTransceiveStatus();
} while (err == ERR_BUSY);
if (err != ERR_NONE)
{
Serial.printf("Error in response: %d \n", err);
return;
}
// if (err != ERR_NONE) {
// Serial.print("Error receiving APDU response: ");
// Serial.println(err);
// } else {
// Serial.println("APDU Response received:");
// for (uint8_t i = 0; i < rxLen; i++) {
// Serial.print(rxapdu.apdu[i], HEX);
// Serial.print(" ");
// }
// Serial.println();
// }
// delay(1000); // Add delay between polling attempts
}
This is the full code that I'm using, there's no transceive happening. No response the length of the response is 0. What did I do wrong here?
