diff --git a/SerialPort_USB.c b/SerialPort_USB.c
index cf52382..650c904 100644
--- a/SerialPort_USB.c
+++ b/SerialPort_USB.c
@@ -7,12 +7,31 @@
 
 otg_core_type otg_core_struct;
 
+tSerialPortUsbArtery *SerialPortUsbArteryOtg1 = NULL;
+
 void usb_delay_ms(uint32_t ms) {
     SystemDelayMs(ms);
 }
 
 void OTG_IRQ_HANDLER(void) {
     usbd_irq_handler(&otg_core_struct);
+
+    if (SerialPortUsbArteryOtg1 != NULL) {
+        uint16_t data_len = usb_vcp_get_rxdata(&otg_core_struct.dev, SerialPortUsbArteryOtg1->usb_buffer);
+
+        if (data_len > 0) {
+            for (uint16_t i = 0; i < data_len; ++i) {
+                osMessageQueuePut(SerialPortUsbArteryOtg1->rxDataQueue, &SerialPortUsbArteryOtg1->usb_buffer[i], 0x0, 0U);
+
+                if (SerialPortUsbArteryOtg1->rxDataSnifferQueue) {
+                    osMessageQueuePut(SerialPortUsbArteryOtg1->rxDataSnifferQueue, &SerialPortUsbArteryOtg1->usb_buffer[i], 0x0, 0U);
+                }
+
+            }
+        }
+
+    }
+
 }
 
 void usb_clock48m_select(usb_clk48_s clk_s) {
@@ -252,6 +271,8 @@ void SerialPortUsb_Init(
         env->rxDataSnifferQueue = 0;
     }
 
+    SerialPortUsbArteryOtg1 = env;
+
     // usb gpio config
     usb_gpio_config();
 
@@ -280,7 +301,7 @@ void SerialPortUsb_Init(
     InitThreadAtrStatic(&env->thread.attr, "UsbDriver", env->thread.controlBlock, env->thread.stack, osPriorityNormal);
     env->thread.id = 0;
 
-    UsbDriver_StartThread(env);
+    //UsbDriver_StartThread(env);
 }
 
 tSerialPortIO SerialPortUsb_GetIo(tSerialPortUsbArtery *env) {