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要在 Arduino 上控制 AS608 指纹识别模块，你可以按照以下步骤进行：

硬件连接

1. 连接指纹模块：将 AS608 指纹模块与 Arduino 连接。通常，AS608 使用 UART 接口进行通信。你需要将 AS608 的 TX、RX、VCC 和 GND 引脚分别连接到 Arduino 的相应引脚。

软件设置

2. 安装必要的库：

   • 安装 Adafruit Fingerprint Sensor Library：

     打开 Arduino IDE，进入库管理器（Library Manager），搜索 “Adafruit Fingerprint Sensor Library”，然后点击安装。

编写代码

3. 编写 Arduino 代码：

   • 导入必要的库：

     #include <Adafruit_Fingerprint.h>
     #include <SoftwareSerial.h>SoftwareSerial mySerial(2, 3); // RX, TX
     Adafruit_Fingerprint finger = Adafruit_Fingerprint(&mySerial);void setup() {Serial.begin(9600);while (!Serial);  // For Leonardo/Micro/Zerodelay(100);Serial.println("\n\nAdafruit Fingerprint sensor enrollment");// set the data rate for the sensor serial portfinger.begin(57600);if (finger.verifyPassword()) {Serial.println("Found fingerprint sensor!");} else {Serial.println("Did not find fingerprint sensor :(");while (1) { delay(1); }}
     }void loop() {// Add your code here to enroll, delete, or search fingerprints
     }
     

   • 录入指纹：

     uint8_t getFingerprintEnroll(uint8_t id) {int p = -1;Serial.print("Waiting for valid finger to enroll as #"); Serial.println(id);while (p != FINGERPRINT_OK) {p = finger.getImage();switch (p) {case FINGERPRINT_OK:Serial.println("Image taken");break;case FINGERPRINT_NOFINGER:Serial.println(".");break;case FINGERPRINT_PACKETRECIEVEERR:Serial.println("Communication error");break;case FINGERPRINT_IMAGEFAIL:Serial.println("Imaging error");break;default:Serial.println("Unknown error");break;}}// Convert image to templatep = finger.image2Tz(1);switch (p) {case FINGERPRINT_OK:Serial.println("Image converted");break;case FINGERPRINT_IMAGEMESS:Serial.println("Image too messy");return p;case FINGERPRINT_PACKETRECIEVEERR:Serial.println("Communication error");return p;case FINGERPRINT_FEATUREFAIL:Serial.println("Could not find fingerprint features");return p;case FINGERPRINT_INVALIDIMAGE:Serial.println("Could not find fingerprint features");return p;default:Serial.println("Unknown error");return p;}// Store templatep = finger.createModel();if (p == FINGERPRINT_OK) {Serial.println("Prints matched!");} else if (p == FINGERPRINT_PACKETRECIEVEERR) {Serial.println("Communication error");return p;} else if (p == FINGERPRINT_ENROLLMISMATCH) {Serial.println("Fingerprints did not match");return p;} else {Serial.println("Unknown error");return p;}p = finger.storeModel(id);if (p == FINGERPRINT_OK) {Serial.println("Stored!");} else if (p == FINGERPRINT_PACKETRECIEVEERR) {Serial.println("Communication error");return p;} else if (p == FINGERPRINT_BADLOCATION) {Serial.println("Could not store in that location");return p;} else if (p == FINGERPRINT_FLASHERR) {Serial.println("Error writing to flash");return p;} else {Serial.println("Unknown error");return p;}return true;
     }
     

   • 删除指纹：

     void deleteFingerprint(uint8_t id) {if (finger.deleteModel(id) == FINGERPRINT_OK) {Serial.println("Deleted!");} else {Serial.println("Could not delete");}
     }
     

   • 查找指纹：

     void searchFingerprint() {uint8_t p = finger.getImage();if (p != FINGERPRINT_OK) return;p = finger.image2Tz();if (p != FINGERPRINT_OK) return;p = finger.fingerFastSearch();if (p == FINGERPRINT_OK) {Serial.print("Found ID #"); Serial.print(finger.fingerID);Serial.print(" with confidence of "); Serial.println(finger.confidence);} else {Serial.println("Did not find a match");}
     }
     

运行程序

4. 运行 Arduino 程序：
   • 将代码上传到 Arduino 板，并通过串口监视器查看输出。

这样，你就可以在 Arduino 上控制 AS608 指纹识别模块，实现指纹的录入、删除和查找功能。