diff --git a/Arduino-Aime-Reader.ino b/Arduino-Aime-Reader.ino
index a765698..5026d3e 100644
--- a/Arduino-Aime-Reader.ino
+++ b/Arduino-Aime-Reader.ino
@@ -1,5 +1,8 @@
 #include "cmd.h"
 
+#define SerialDevice SerialUSB //32u4,samd21
+//#define SerialDevice Serial
+
 void SerialCheck() {
   switch (packet_read()) {
     case SG_NFC_CMD_RESET:
@@ -55,8 +58,9 @@ void SerialCheck() {
 }
 
 void setup() {
-  SerialUSB.begin(38400);
-  SerialUSB.setTimeout(0);
+  SerialDevice.begin(38400);
+  //  SerialUSB.begin(119200);//high_baudrate=true
+  SerialDevice.setTimeout(0);
   FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);
   nfc.begin();
   if (!nfc.getFirmwareVersion()) {
@@ -82,13 +86,16 @@ void loop() {
   packet_write();
 }
 
+static uint8_t len, r, checksum;
+static bool escape = false;
+
 static uint8_t packet_read() {
-  uint8_t len, r, checksum;
-  bool escape = false;
-  while (SerialUSB.available()) {
-    r = SerialUSB.read();
+
+  while (SerialDevice.available()) {
+    r = SerialDevice.read();
     if (r == 0xE0) {
       req.frame_len = 0xFF;
+      len = 0;
       continue;
     }
     if (req.frame_len == 0xFF) {
@@ -119,7 +126,7 @@ static void packet_write() {
   if (res.cmd == 0) {
     return;
   }
-  SerialUSB.write(0xE0);
+  SerialDevice.write(0xE0);
   while (len <= res.frame_len) {
     uint8_t w;
     if (len == res.frame_len) {
@@ -129,14 +136,14 @@ static void packet_write() {
       checksum += w;
     }
     if (w == 0xE0 || w == 0xD0) {
-      if (SerialUSB.availableForWrite() < 2)
+      if (SerialDevice.availableForWrite() < 2)
         return;
-      SerialUSB.write(0xD0);
-      SerialUSB.write(--w);
+      SerialDevice.write(0xD0);
+      SerialDevice.write(--w);
     } else {
-      if (SerialUSB.availableForWrite() < 1)
+      if (SerialDevice.availableForWrite() < 1)
         return;
-      SerialUSB.write(w);
+      SerialDevice.write(w);
     }
     len++;
   }
diff --git a/ReaderTest.ino b/ReaderTest.ino
deleted file mode 100644
index 211dee1..0000000
--- a/ReaderTest.ino
+++ /dev/null
@@ -1,64 +0,0 @@
-#include <Wire.h>
-#include <PN532_I2C.h>
-#include <PN532.h>
-
-PN532_I2C pn532i2c(Wire);
-PN532 nfc(pn532i2c);
-
-uint16_t systemCode = 0xFFFF;
-uint8_t requestCode = 0x01;
-uint16_t systemCodeResponse;
-typedef union {
-  uint8_t block[16];
-  struct {
-    uint8_t IDm[8];
-    uint8_t PMm[8];
-  };
-} Card_Data;
-
-Card_Data card;
-uint8_t AimeKey[6] = {0x57, 0x43, 0x43, 0x46, 0x76, 0x32};
-uint8_t BanaKey[6] = {0x60, 0x90, 0xD0, 0x06, 0x32, 0xF5};
-uint8_t MifareKey[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
-#define M2F_B 1
-
-void setup() {
-  SerialUSB.begin(38400);
-  SerialUSB.setTimeout(0);
-  while (!SerialUSB);
-  nfc.begin();
-  while (!nfc.getFirmwareVersion()) {
-    SerialUSB.println("Didn't find PN53x board");
-    delay(2000);
-  }
-  nfc.setPassiveActivationRetries(0x10);
-  nfc.SAMConfig();
-}
-
-void loop() {
-  uint8_t uid[4], uL;
-  delay(1000);
-
-  if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uL) && nfc.mifareclassic_AuthenticateBlock(uid, uL, 1, 1, AimeKey)) {
-    SerialUSB.println("Aime");
-    return;
-  }
-  if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uL) && nfc.mifareclassic_AuthenticateBlock(uid, uL, 1, 0, BanaKey)) {
-    SerialUSB.println("Bana");
-    return;
-  }
-  if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uL) && nfc.mifareclassic_AuthenticateBlock(uid, uL, M2F_B, 0, MifareKey)) {
-    SerialUSB.println("Default Key Mifare");
-    return;
-  }
-  if (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uL)) {
-    SerialUSB.println("Mifare:Unknown key");
-    return;
-  }
-
-  if (nfc.felica_Polling(systemCode, requestCode, card.IDm, card.PMm, &systemCodeResponse, 200)) {
-    SerialUSB.println("Found a Felica card!");
-    return;
-  }
-  SerialUSB.println("Didn't find card");
-}
diff --git a/cmd.h b/cmd.h
index f01d551..2c323d7 100644
--- a/cmd.h
+++ b/cmd.h
@@ -143,13 +143,15 @@ static void sg_nfc_cmd_reset() {//重置读卡器
 }
 
 static void sg_nfc_cmd_get_fw_version() {
-  sg_res_init(sizeof(res.version));
-  memcpy(res.version, "TN32MSEC003S F/W Ver1.2E", 23);
+  sg_res_init(23);
+  //  memcpy(res.version, "TN32MSEC003S F/W Ver1.2E", 23);
+  memcpy(res.version, "Sucareto Aime Reader FW", 23);
 }
 
 static void sg_nfc_cmd_get_hw_version() {
-  sg_res_init(sizeof(res.version));
-  memcpy(res.version, "TN32MSEC003S H/W Ver3.0J", 23);
+  sg_res_init(23);
+  //  memcpy(res.version, "TN32MSEC003S H/W Ver3.0J", 23);
+  memcpy(res.version, "Sucareto Aime Reader HW", 23);
 }
 
 static void sg_nfc_cmd_mifare_set_key() {
@@ -162,7 +164,7 @@ static void sg_nfc_cmd_mifare_set_key() {
 }
 
 static void sg_led_cmd_reset() {
-  sg_res_init(sizeof(res.reset_payload));
+  sg_res_init(1);
   res.reset_payload = 0;
   fill_solid(leds, NUM_LEDS, 0x000000);
   FastLED[0].show(leds, NUM_LEDS, BRI);