diff --git a/src/bt.cpp b/src/bt.cpp
index fc76857..0cddee5 100644
--- a/src/bt.cpp
+++ b/src/bt.cpp
@@ -341,15 +341,21 @@ static void l2cap_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t
             }
         } else if (channel == hid_control_cid) {
             if (check_dse) {
-                check_dse = false;
-                if (packet[0] == 0x02) {
-                    is_dse = false;
-                }else if (size > 1){
+                if (packet[0] == 0xA3 && packet[1] == 0x70) {
+                    printf("Connected DSE Controller\n");
+                    check_dse = false;
                     is_dse = true;
-                }
 #if !ENABLE_SERIAL
-                tud_connect();
+                    tud_connect();
 #endif
+                }else if (packet[0] == 0x02) {
+                    printf("Connected DS5 Controller\n");
+                    check_dse = false;
+                    is_dse = false;
+#if !ENABLE_SERIAL
+                    tud_connect();
+#endif
+                }
             }
             if (packet[0] == 0xA3) {
                 uint8_t report_id = packet[1];
diff --git a/src/config.cpp b/src/config.cpp
index 9e71b8c..d81d9ca 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -16,6 +16,7 @@ constexpr uint32_t CONFIG_MAGIC = 0x66ccff00;
 constexpr uint16_t CONFIG_VERSION = 1;
 constexpr uint32_t CONFIG_FLASH_OFFSET = PICO_FLASH_SIZE_BYTES - FLASH_SECTOR_SIZE;
 static Config config{};
+bool is_dse = false;
 
 // 编译期保护
 // 判断Config结构体是否能放进flash 256bytes
diff --git a/src/config.h b/src/config.h
index 7c21b55..5d73272 100644
--- a/src/config.h
+++ b/src/config.h
@@ -33,6 +33,6 @@ const Config_body& get_config();
 void set_config(const uint8_t *new_config, const uint16_t len);
 void config_valid();
 void set_config(const Config_body &new_config);
-static bool is_dse = false;
+extern bool is_dse;
 
 #endif //DS5_BRIDGE_CONFIG_H