[+] RGB!!

.gitmodules

@@ -1,3 +1,3 @@
-[submodule "lib/PN532"]
-	path = lib/PN532-repo
-	url = https://github.com/Seeed-Studio/PN532/
+[submodule "lib/FastLED"]
+	path = lib/FastLED
+	url = https://github.com/FastLED/FastLED

include/types.h

@@ -0,0 +1,15 @@
+#ifndef TYPES_H
+#define TYPES_H
+
+#define u8 uint8_t
+#define u16 uint16_t
+#define u32 uint32_t
+
+#define s8 int8_t
+#define s16 int16_t
+#define s32 int32_t
+
+#define f32 float
+#define f64 double
+
+#endif //TYPES_H

src/main.cpp

@@ -3,10 +3,13 @@
 #include <Wire.h>
 #include <PN532_I2C.h>
 #include <PN532.h>
+#include <FastLED.h>
+#include <types.h>
 
-#define u8 uint8_t
-#define u16 uint16_t
-#define u32 uint32_t
+constexpr u8 NUM_LEDS = 7;
+constexpr u8 BR_DIM = 8;
+constexpr u8 BR_BRIGHT = 14;
+CRGB leds[NUM_LEDS];
 
 PN532_I2C pn532i2c(Wire);
 PN532 nfc(pn532i2c);
@@ -18,7 +21,7 @@ u32 prevTime;
 void setup()
 {
     // Add initial delay to allow the serial monitor to catch up
-    delay(1000);
+    delay(500);
 
     // Initialize serial port
     USBSerial.begin(115200);
@@ -27,6 +30,10 @@ void setup()
     // Initialize I2C communication
     Wire.setPins(GPIO_NUM_4, GPIO_NUM_5);
 
+    // Initialize the LED
+    CFastLED::addLeds<NEOPIXEL, GPIO_NUM_6>(leds, NUM_LEDS);
+    FastLED.setBrightness(BR_DIM);
+
     // Find the PN532 NFC module
     nfc.begin();
     u32 versiondata;
@@ -50,7 +57,25 @@ void setup()
     nfc.SAMConfig();
 
     // Clear the IDm buffer
-    memset(prevIDm, 0, 8);
+    memset(prevIDm, 0, UID_LENGTH);
+}
+
+void led_animation()
+{
+    FastLED.setBrightness(BR_BRIGHT);
+    CRGB colors[] = {CRGB::LimeGreen, CRGB::Black, CRGB::Gold, CRGB::Black};
+
+    for (const auto color : colors)
+    {
+        for (u8 i = 1; i < NUM_LEDS; i++)
+        {
+            leds[i] = color;
+            FastLED.show();
+            delay(35);
+        }
+    }
+
+    FastLED.setBrightness(BR_DIM);
 }
 
 void foundCard(const u8* uid, const u8 len, const char* cardType)
@@ -68,6 +93,8 @@ void foundCard(const u8* uid, const u8 len, const char* cardType)
         USBSerial.print(uid[i], HEX);
     USBSerial.println("");
 
+    led_animation();
+
     memcpy(prevIDm, uid, UID_LENGTH);
     prevTime = millis();
 }
@@ -80,13 +107,15 @@ void loop()
 
     // Wait for an FeliCa type cards.
     // When one is found, some basic information such as IDm, PMm, and System Code are retrieved.
-    USBSerial.print("F");
-    if (nfc.felica_Polling(0xFFFF, 0x00, idm, pmm, &systemCode, 5))
+    leds[0] = CRGB::BlueViolet;
+    FastLED.show();
+    if (nfc.felica_Polling(0xFFFF, 0x00, idm, pmm, &systemCode, 5) == 1)
         foundCard(idm, UID_LENGTH, "FeliCa");
 
     // Wait for an ISO14443A type cards (MIFARE, etc.).  When one is found
     u8 uidLength;
-    USBSerial.print("M");
-    if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, idm, &uidLength, 5))
+    leds[0] = CRGB::OrangeRed;
+    FastLED.show();
+    if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, idm, &uidLength, 5) == 1)
         foundCard(idm, uidLength, "ISO14443A");
 }