example

Author: ladyada

examples/print_uuid/print_uuid.ino

@@ -0,0 +1,93 @@
+#include <Wire.h>
+#include <Adafruit_MFRC630.h>
+
+/* Indicate the pin number where PDOWN is connected. */
+#define PDOWN_PIN         (12)
+
+/* Use the default I2C address */
+Adafruit_MFRC630 rfid = Adafruit_MFRC630(PDOWN_PIN);
+
+/* Prints out len bytes of hex data in table format. */
+static void print_buf_hex(uint8_t *buf, size_t len)
+{
+  for (uint8_t i = 0; i < len; i++)
+  {
+    Serial.print("0x");
+    if (buf[i] < 16)
+    {
+      Serial.print("0");
+    }
+    Serial.print(buf[i], HEX);
+    Serial.print(" ");
+  }
+  Serial.println(" ");
+}
+/*
+ * This more concise loop show the minimim requirements to dump the first 1K
+ * of memory from a Mifare Classic or Mifare Plus compatible card. No meaningful
+ * error-handling or debug output is present here, so this code is intended
+ * as a simple starting point for further work.
+ */
+bool radio_mifare1K_dump_minimal(void)
+{
+    bool rc;
+
+    /* Put the IC in a known-state. */
+    rfid.softReset();
+
+    /* Configure the radio for ISO14443A-106. */
+    rfid.configRadio(MFRC630_RADIOCFG_ISO1443A_106);
+
+    /* Request a tag (activates the near field, etc.). */
+    uint16_t atqa = rfid.iso14443aRequest();
+
+    /* Looks like we found a tag, move on to selection. */
+    if (atqa)
+    {
+        uint8_t uid[10] = { 0 };
+        uint8_t uidlen;
+        uint8_t sak;
+
+        /* Retrieve the UID and SAK values. */
+        uidlen = rfid.iso14443aSelect(uid, &sak);
+        Serial.print("Found a tag with UUID ");
+        for (uint8_t i = 0; i < uidlen; i++) {
+            Serial.print(uid[i], HEX);
+            Serial.print(" ");
+        }
+        Serial.println("");
+    }
+}
+
+/**
+ *
+ */
+void setup() {
+  Serial.begin(115200);
+
+  while (!Serial) {
+    delay(1);
+  }
+
+  Serial.println("");
+  Serial.println("-------------------------------");
+  Serial.println("Adafruit MFRC630 Mifare 1K Test");
+  Serial.println("-------------------------------");
+
+  pinMode(LED_BUILTIN, OUTPUT);
+
+  /* Try to initialize the IC */
+  if (!(rfid.begin())) {
+    Serial.println("Unable to initialize the MFRC630. Check wiring?");
+    while(1) {
+      digitalWrite(LED_BUILTIN, HIGH);
+      delay(50);
+      digitalWrite(LED_BUILTIN, LOW);
+      delay(50);
+    }
+  }
+}
+
+void loop() {
+  radio_mifare1K_dump_minimal();
+}