From 0463d4b7dd9ada462ca34abbc4e26fb3fbe16515 Mon Sep 17 00:00:00 2001
From: caternuson <caternuson@gmail.com>
Date: Thu, 16 Nov 2023 08:14:24 -0800
Subject: [PATCH] update example

---
 examples/readMifareClassicIrq/readMifareClassicIrq.ino | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/examples/readMifareClassicIrq/readMifareClassicIrq.ino b/examples/readMifareClassicIrq/readMifareClassicIrq.ino
index 44e715e..345e317 100644
--- a/examples/readMifareClassicIrq/readMifareClassicIrq.ino
+++ b/examples/readMifareClassicIrq/readMifareClassicIrq.ino
@@ -108,8 +108,13 @@ void startListeningToNFC() {
   // Reset our IRQ indicators
   irqPrev = irqCurr = HIGH;
 
-  Serial.println("Waiting for an ISO14443A Card ...");
-  nfc.startPassiveTargetIDDetection(PN532_MIFARE_ISO14443A);
+  Serial.println("Starting passive read for an ISO14443A Card ...");
+  if (!nfc.startPassiveTargetIDDetection(PN532_MIFARE_ISO14443A)) {
+    Serial.println("No card found. Waiting...");
+  } else {
+    Serial.println("Card already present.");
+    handleCardDetected();
+  }
 }
 
 void handleCardDetected() {