#ESP_Finger 使用ESP8266(NodeMcu)和ESP32與FPC1020AM電容指紋模組做的arduino程式

This is a sample for finger search in database 這是一個將放入的指紋與已存入資料庫的指紋做比對的範例
you can follow this post to get the latest code 你可以追蹤這篇文章來取得最新的程式碼
https://bbs.hassbian.com/thread-2768-1-1.html

指紋偵測運作影片
http://v.youku.com/v_show/id_XMzM5NjE1ODUwNA==.html?sharefrom=iphone&sharekey=ed1334d29354b395d114b663099544e23
Arduino運作影片
http://v.youku.com/v_show/id_XMzQwMjM5NjA2OA==.html?sharefrom=iphone&sharekey=b1966edb1145daf5b56b65709b0fbda41

Hardware list硬體購買清單:
FPC1020AM+QS808 UART輸出輸入指紋模組
https://item.taobao.com/item.htm?id=545528806282
ESP8266-NodeMcu 8266 wifi模組
https://detail.tmall.com/item.htm?id=44766400092
USB-TTL:非必須，但可以用來在PC上連接指紋模組好註冊指紋進模組內給未來搜尋資料庫使用
https://detail.tmall.com/item.htm?id=536700034613
Dupont Line 杜邦線
https://detail.tmall.com/item.htm?id=41065178536
220歐姆電阻
https://item.taobao.com/item.htm?id=5653998305
LED
https://item.taobao.com/item.htm?id=38869571577

Reference參考資料:
指紋模組FPC1020AM_算法板QS808_IDWD1020用户使用手册
https://wenku.baidu.com/view/c174958f4a7302768f993900.html
MQTT教學（六）：使用PubSubClient程式庫開發Arduino MQTT應用
https://swf.com.tw/?p=1021
使用USBpcap抓取USB封包內容
https://www.anquanke.com/post/id/85218
額外參考：Mifare RFID-RC522模組實驗（四）：Mifare RFID的門禁系統實驗
https://swf.com.tw/?p=1027

Finger指紋+算法板連接NodeMCU的接腳方式(務必看手冊去接線，接錯模組可能會燒掉)
https://raw.githubusercontent.com/lvidarte/esp8266/master/nodemcu_pins.png

下面為透過usbpcap抓包得到的指紋模組檢查的流程與回應數據
#command
HOST发送 CMD_TEST_CONNECTION指令及模块的响应
HOST命令： 55 AA 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
Target响应：AA 55 01 00 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 01

#command1
发送采集指纹图像后模块检测到手指的命令及响应 <-- 連續偵測到有檢測到手指
Host命令： 55 AA 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1F 01
Target响应：AA 55 01 00 20 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 22 01

发送采集滑动指纹图像后结果超时（FP TimeOut）的命令及响应
CMD_GET_IMAGE ：55 AA 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1F 01
ERR_TIME_OUT： AA 55 01 00 20 00 02 00 23 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4A 01

#command2
从ImageBuffer中生成模板数据保存在RamBuffer0中
Host命令包： 55 AA 00 00 60 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 61 01
Target响应包： AA 55 01 00 60 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 62 01

#command3
暂存在RamBuffer0中的指纹模板与1-500编号范围内的指纹比对，返回比对结果 响应內的01=已註冊在指紋資料庫的Finger ID
Host命令： 55 AA 00 00 63 00 06 00 00 00 01 00 F4 01 00 00 00 00 00 00 00 00 00 00 5E 02
Target响应：AA 55 01 00 63 00 05 00 00 00 01 00 01 00 00 00 00 00 00 00 00 00 00 00 6A 01

//程式內需修改的部份
const char *ssid = "your_wifi_ssid";   // WIFI名稱
const char *password = "your_wifi_password"; // WIFI密碼
const char *mqtt_server = "your matt server ip"; // your matt server ip
const char *mqtt_topic = "finger"; // mqtt_topic for HA sensor name
const char *mqtt_unlock_payload = "unlock"; // mqtt_unlock_payload for HA sensor state
const char *mqtt_lock_payload = "lock"; // mqtt_lock_payload for HA sensor state
const char *ota_device_name = "finger_8266"; // OTA_device_name for upload firmware
//if you want to enable ota password, you should uncomment "//const char *ota_upload_password" and "//ArduinoOTA.setPassword(ota_upload_password)"
//要啟用OTA密碼功能的話要反註解下面的 "//const char *ota_upload_password" and //ArduinoOTA.setPassword(ota_upload_password)
//const char *ota_upload_password = "ota_password"; // OTA_upload_password for upload firmware