【识别标签ID】

1）所需硬件：【Microduino-Core/zh】,【Microduino-USBTTL/zh】或【Microduino-USBTTL-C/zh】,【Microduino-Module NFC/zh】(带天线) 2）所需软件：Microduino IDE 1.6.7或以上版本。下载如下程序到核心模块Core中（复制粘贴到IDE中，直接下载，或在文件→示例→NFC中选择一个示例） #include <Microduino_NFC.h> NFC nfc; void setup(void) { Serial.begin(115200); Serial.println("Hello!"); uint32_t versiondata = nfc.begin(); if (! versiondata) { Serial.print("Didn't find PN53x board"); while (1); // halt } // Got ok data, print it out! Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX); Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC); Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC); // Set the max number of retry attempts to read from a card // This prevents us from waiting forever for a card, which is // the default behaviour of the PN532. nfc.setPassiveActivationRetries(0xFF); Serial.println("Waiting for an ISO14443A card"); } void loop(void) { boolean success; uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type) // Wait for an ISO14443A type cards (Mifare, etc.). When one is found // 'uid' will be populated with the UID, and uidLength will indicate // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight) success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength); if (success) { Serial.println("Found a card!"); Serial.print("UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes"); Serial.print("UID Value: "); for (uint8_t i=0; i < uidLength; i++) { Serial.print(" 0x");Serial.print(uid[i], HEX); } Serial.println(""); // Wait 1 second before continuing delay(1000); } else { // PN532 probably timed out waiting for a card Serial.println("Timed out waiting for a card"); } } 3）确认读卡器已经连接好，如图所示。并且将卡片放好，贴紧读卡器。 4）下载成功后打开串口监视器，波特率选择115200. 5）可以通过串口观察到返回信息，可以看到标签的UID与UID长度。 到这一步就可以简单的形成一个NFC标签控制应用的基础了，通过识别正确的UID执行对应功能。 返回Microduino-NFC模块页面