Differences

This shows you the differences between two versions of the page.

--- en:iot:examples:nfc [2021/03/05 03:00] – heiko.pikner
+++ en:iot:examples:nfc [2024/06/21 18:41] (current) – karllall
@@ Line 1: / Line 1: @@
+====== NFC example ======
+{{:en:iot:examples:nfc_module.png?200|}}
+{{:en:iot:examples:esp_module_pinout.png?200|}}
+{{:en:iot:examples:esp_with_nfc_v3.png?250|}}
+SCK  -> 4 \\
+MISO -> 5 \\
+MOSI -> 6 \\
+SS   -> 13 \\
+VCC  -> 8 \\
+GND  -> 15 \\
+Needed libraries:
+<code>lib_deps = ITTIoT, Adafruit PN532</code>
+The code below will upload card ID to mqtt server, when a card is present.
+<code c>
+/*
+ * IoT NFC example
+ *
+ * This example will publish to "NFC" topic
+ *
+ * Created 19 Nov 2019
+ * Modified by Lars Briedis 17 June 2024
+ */
+#include <Arduino.h>
+#include <ittiot.h>
+#include <Adafruit_PN532.h>
+#define WIFI_NAME "name"
+#define WIFI_PASSWORD "password"
+//Define pins for communication with the NFC reader
+#define PN532_SCK  D5
+#define PN532_MOSI D7
+#define PN532_SS   D3
+#define PN532_MISO D6
+//Setup Adafruit PN532 library
+Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS);
+void iot_connected()
+{
+  Serial.println("MQTT connected callback");
+  Serial.println("IoT NFC example!");
+}
+void setup()
+{
+  Serial.begin(115200);
+  Serial.println("Booting");
+  //iot.setConfig("wname", WIFI_NAME);
+  //iot.setConfig("wpass", WIFI_PASSWORD);
+  //iot.printConfig(); // print json config to serial //Peale Serial.begin ja enne iot.setup
+  //iot.setup();
+  nfc.begin();
+  uint32_t versiondata = nfc.getFirmwareVersion();
+  if (! versiondata) {
+    Serial.println("Didn't find PN53x board");
+    while (1);
+  }
+  nfc.SAMConfig();
+}
+void loop()
+{
+  boolean success;
+  uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };
+  uint8_t uidLength;
+  char buf[10];
+  char str[70] = "";
+  //iot.handle();
+  success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 1000); // Card reading function
+  if (success)
+  {
+    //Concatenate card ID
+    for(int i = 0; i < uidLength;i++)
+    {
+      String(uid[i]).toCharArray(buf,10);
+      strcat(str, buf);
+    }
+    //iot.publishMsg("NFC", str); // Publish card ID to topic "NFC"
+    Serial.println(str);
+    delay(1000);
+  }
+}
+</code>