diff --git a/STM32/STM32CUBE/BlinkSTM32/.vscode/extensions.json b/STM32/STM32CUBE/BlinkSTM32/.vscode/extensions.json
deleted file mode 100644
index 0f0d740..0000000
--- a/STM32/STM32CUBE/BlinkSTM32/.vscode/extensions.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
- // See http://go.microsoft.com/fwlink/?LinkId=827846
- // for the documentation about the extensions.json format
- "recommendations": [
- "platformio.platformio-ide"
- ]
-}
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/.gitignore b/STM32/STM32CUBE/USB_VIRTUAL_PORT/.gitignore
new file mode 100644
index 0000000..89cc49c
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/.gitignore
@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/main.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/main.h
new file mode 100644
index 0000000..a354d79
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/main.h
@@ -0,0 +1,16 @@
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "stm32f1xx_hal.h"
+
+void Error_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_hal_conf.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_hal_conf.h
new file mode 100644
index 0000000..8cdf455
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_hal_conf.h
@@ -0,0 +1,370 @@
+/**
+ ******************************************************************************
+ * @file stm32f1xx_hal_conf.h
+ * @brief HAL configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT(c) 2021 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_HAL_CONF_H
+#define __STM32F1xx_HAL_CONF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+/**
+ * @brief This is the list of modules to be used in the HAL driver
+ */
+
+#define HAL_MODULE_ENABLED
+/*#define HAL_ADC_MODULE_ENABLED */
+/*#define HAL_CRYP_MODULE_ENABLED */
+/*#define HAL_CAN_MODULE_ENABLED */
+/*#define HAL_CEC_MODULE_ENABLED */
+/*#define HAL_CORTEX_MODULE_ENABLED */
+/*#define HAL_CRC_MODULE_ENABLED */
+/*#define HAL_DAC_MODULE_ENABLED */
+/*#define HAL_DMA_MODULE_ENABLED */
+/*#define HAL_ETH_MODULE_ENABLED */
+/*#define HAL_FLASH_MODULE_ENABLED */
+#define HAL_GPIO_MODULE_ENABLED
+/*#define HAL_I2C_MODULE_ENABLED */
+/*#define HAL_I2S_MODULE_ENABLED */
+/*#define HAL_IRDA_MODULE_ENABLED */
+/*#define HAL_IWDG_MODULE_ENABLED */
+/*#define HAL_NOR_MODULE_ENABLED */
+/*#define HAL_NAND_MODULE_ENABLED */
+/*#define HAL_PCCARD_MODULE_ENABLED */
+#define HAL_PCD_MODULE_ENABLED
+/*#define HAL_HCD_MODULE_ENABLED */
+/*#define HAL_PWR_MODULE_ENABLED */
+/*#define HAL_RCC_MODULE_ENABLED */
+/*#define HAL_RTC_MODULE_ENABLED */
+/*#define HAL_SD_MODULE_ENABLED */
+/*#define HAL_MMC_MODULE_ENABLED */
+/*#define HAL_SDRAM_MODULE_ENABLED */
+/*#define HAL_SMARTCARD_MODULE_ENABLED */
+/*#define HAL_SPI_MODULE_ENABLED */
+/*#define HAL_SRAM_MODULE_ENABLED */
+/*#define HAL_TIM_MODULE_ENABLED */
+/*#define HAL_UART_MODULE_ENABLED */
+/*#define HAL_USART_MODULE_ENABLED */
+/*#define HAL_WWDG_MODULE_ENABLED */
+/*#define HAL_EXTI_MODULE_ENABLED */
+
+#define HAL_CORTEX_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+
+/* ########################## Oscillator Values adaptation ####################*/
+/**
+ * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSE is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#if !defined (HSE_STARTUP_TIMEOUT)
+ #define HSE_STARTUP_TIMEOUT ((uint32_t)100) /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+ * @brief Internal High Speed oscillator (HSI) value.
+ * This value is used by the RCC HAL module to compute the system frequency
+ * (when HSI is used as system clock source, directly or through the PLL).
+ */
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE ((uint32_t)8000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+ * @brief Internal Low Speed oscillator (LSI) value.
+ */
+#if !defined (LSI_VALUE)
+ #define LSI_VALUE 40000U /*!< LSI Typical Value in Hz */
+#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
+ The real value may vary depending on the variations
+ in voltage and temperature. */
+
+/**
+ * @brief External Low Speed oscillator (LSE) value.
+ * This value is used by the UART, RTC HAL module to compute the system frequency
+ */
+#if !defined (LSE_VALUE)
+ #define LSE_VALUE ((uint32_t)32768) /*!< Value of the External oscillator in Hz*/
+#endif /* LSE_VALUE */
+
+#if !defined (LSE_STARTUP_TIMEOUT)
+ #define LSE_STARTUP_TIMEOUT ((uint32_t)5000) /*!< Time out for LSE start up, in ms */
+#endif /* LSE_STARTUP_TIMEOUT */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+ === you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+ * @brief This is the HAL system configuration section
+ */
+#define VDD_VALUE ((uint32_t)3300) /*!< Value of VDD in mv */
+#define TICK_INT_PRIORITY ((uint32_t)0) /*!< tick interrupt priority (lowest by default) */
+#define USE_RTOS 0
+#define PREFETCH_ENABLE 1
+
+/* ########################## Assert Selection ############################## */
+/**
+ * @brief Uncomment the line below to expanse the "assert_param" macro in the
+ * HAL drivers code
+ */
+/* #define USE_FULL_ASSERT 1U */
+
+/* ################## Ethernet peripheral configuration ##################### */
+
+/* Section 1 : Ethernet peripheral configuration */
+
+/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
+#define MAC_ADDR0 2
+#define MAC_ADDR1 0
+#define MAC_ADDR2 0
+#define MAC_ADDR3 0
+#define MAC_ADDR4 0
+#define MAC_ADDR5 0
+
+/* Definition of the Ethernet driver buffers size and count */
+#define ETH_RX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for receive */
+#define ETH_TX_BUF_SIZE ETH_MAX_PACKET_SIZE /* buffer size for transmit */
+#define ETH_RXBUFNB ((uint32_t)8) /* 4 Rx buffers of size ETH_RX_BUF_SIZE */
+#define ETH_TXBUFNB ((uint32_t)4) /* 4 Tx buffers of size ETH_TX_BUF_SIZE */
+
+/* Section 2: PHY configuration section */
+
+/* DP83848_PHY_ADDRESS Address*/
+#define DP83848_PHY_ADDRESS 0x01U
+/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
+#define PHY_RESET_DELAY ((uint32_t)0x000000FF)
+/* PHY Configuration delay */
+#define PHY_CONFIG_DELAY ((uint32_t)0x00000FFF)
+
+#define PHY_READ_TO ((uint32_t)0x0000FFFF)
+#define PHY_WRITE_TO ((uint32_t)0x0000FFFF)
+
+/* Section 3: Common PHY Registers */
+
+#define PHY_BCR ((uint16_t)0x00) /*!< Transceiver Basic Control Register */
+#define PHY_BSR ((uint16_t)0x01) /*!< Transceiver Basic Status Register */
+
+#define PHY_RESET ((uint16_t)0x8000) /*!< PHY Reset */
+#define PHY_LOOPBACK ((uint16_t)0x4000) /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M ((uint16_t)0x2100) /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M ((uint16_t)0x2000) /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M ((uint16_t)0x0100) /*!< Set the full-duplex mode at 10 Mb/s */
+#define PHY_HALFDUPLEX_10M ((uint16_t)0x0000) /*!< Set the half-duplex mode at 10 Mb/s */
+#define PHY_AUTONEGOTIATION ((uint16_t)0x1000) /*!< Enable auto-negotiation function */
+#define PHY_RESTART_AUTONEGOTIATION ((uint16_t)0x0200) /*!< Restart auto-negotiation function */
+#define PHY_POWERDOWN ((uint16_t)0x0800) /*!< Select the power down mode */
+#define PHY_ISOLATE ((uint16_t)0x0400) /*!< Isolate PHY from MII */
+
+#define PHY_AUTONEGO_COMPLETE ((uint16_t)0x0020) /*!< Auto-Negotiation process completed */
+#define PHY_LINKED_STATUS ((uint16_t)0x0004) /*!< Valid link established */
+#define PHY_JABBER_DETECTION ((uint16_t)0x0002) /*!< Jabber condition detected */
+
+/* Section 4: Extended PHY Registers */
+#define PHY_SR ((uint16_t)0x10U) /*!< PHY status register Offset */
+
+#define PHY_SPEED_STATUS ((uint16_t)0x0002U) /*!< PHY Speed mask */
+#define PHY_DUPLEX_STATUS ((uint16_t)0x0004U) /*!< PHY Duplex mask */
+
+/* Includes ------------------------------------------------------------------*/
+/**
+ * @brief Include module's header file
+ */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+ #include "stm32f1xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_EXTI_MODULE_ENABLED
+ #include "stm32f1xx_hal_exti.h"
+#endif /* HAL_EXTI_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+ #include "stm32f1xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+ #include "stm32f1xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+
+#ifdef HAL_ETH_MODULE_ENABLED
+ #include "stm32f1xx_hal_eth.h"
+#endif /* HAL_ETH_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+ #include "stm32f1xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CEC_MODULE_ENABLED
+ #include "stm32f1xx_hal_cec.h"
+#endif /* HAL_CEC_MODULE_ENABLED */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+ #include "stm32f1xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+ #include "stm32f1xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+ #include "stm32f1xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+ #include "stm32f1xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+ #include "stm32f1xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+#ifdef HAL_SRAM_MODULE_ENABLED
+ #include "stm32f1xx_hal_sram.h"
+#endif /* HAL_SRAM_MODULE_ENABLED */
+
+#ifdef HAL_NOR_MODULE_ENABLED
+ #include "stm32f1xx_hal_nor.h"
+#endif /* HAL_NOR_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+ #include "stm32f1xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+ #include "stm32f1xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+ #include "stm32f1xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+ #include "stm32f1xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+ #include "stm32f1xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_PCCARD_MODULE_ENABLED
+ #include "stm32f1xx_hal_pccard.h"
+#endif /* HAL_PCCARD_MODULE_ENABLED */
+
+#ifdef HAL_SD_MODULE_ENABLED
+ #include "stm32f1xx_hal_sd.h"
+#endif /* HAL_SD_MODULE_ENABLED */
+
+#ifdef HAL_MMC_MODULE_ENABLED
+ #include "stm32f1xx_hal_mmc.h"
+#endif /* HAL_MMC_MODULE_ENABLED */
+
+#ifdef HAL_NAND_MODULE_ENABLED
+ #include "stm32f1xx_hal_nand.h"
+#endif /* HAL_NAND_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+ #include "stm32f1xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+ #include "stm32f1xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+ #include "stm32f1xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+ #include "stm32f1xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+ #include "stm32f1xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+ #include "stm32f1xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+ #include "stm32f1xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+ #include "stm32f1xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+ #include "stm32f1xx_hal_hcd.h"
+#endif /* HAL_HCD_MODULE_ENABLED */
+
+
+/* Exported macro ------------------------------------------------------------*/
+#ifdef USE_FULL_ASSERT
+/**
+ * @brief The assert_param macro is used for function's parameters check.
+ * @param expr: If expr is false, it calls assert_failed function
+ * which reports the name of the source file and the source
+ * line number of the call that failed.
+ * If expr is true, it returns no value.
+ * @retval None
+ */
+ #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+ void assert_failed(uint8_t* file, uint32_t line);
+#else
+ #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F1xx_HAL_CONF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_it.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_it.h
new file mode 100644
index 0000000..bfa6d0d
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/stm32f1xx_it.h
@@ -0,0 +1,70 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file stm32f1xx_it.h
+ * @brief This file contains the headers of the interrupt handlers.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F1xx_IT_H
+#define __STM32F1xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Exported types ------------------------------------------------------------*/
+/* USER CODE BEGIN ET */
+
+/* USER CODE END ET */
+
+/* Exported constants --------------------------------------------------------*/
+/* USER CODE BEGIN EC */
+
+/* USER CODE END EC */
+
+/* Exported macro ------------------------------------------------------------*/
+/* USER CODE BEGIN EM */
+
+/* USER CODE END EM */
+
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+void USB_LP_CAN1_RX0_IRQHandler(void);
+/* USER CODE BEGIN EFP */
+
+/* USER CODE END EFP */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F1xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usb_device.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usb_device.h
new file mode 100644
index 0000000..e2d9e8d
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usb_device.h
@@ -0,0 +1,105 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usb_device.h
+ * @version : v2.0_Cube
+ * @brief : Header for usb_device.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USB_DEVICE__H__
+#define __USB_DEVICE__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBD_OTG_DRIVER
+ * @{
+ */
+
+/** @defgroup USBD_DEVICE USBD_DEVICE
+ * @brief Device file for Usb otg low level driver.
+ * @{
+ */
+
+/** @defgroup USBD_DEVICE_Exported_Variables USBD_DEVICE_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN VARIABLES */
+
+/* USER CODE END VARIABLES */
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DEVICE_Exported_FunctionsPrototype USBD_DEVICE_Exported_FunctionsPrototype
+ * @brief Declaration of public functions for Usb device.
+ * @{
+ */
+
+/** USB Device initialization function. */
+void MX_USB_DEVICE_Init(void);
+
+/*
+ * -- Insert functions declaration here --
+ */
+/* USER CODE BEGIN FD */
+
+/* USER CODE END FD */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USB_DEVICE__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_cdc_if.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_cdc_if.h
new file mode 100644
index 0000000..bf07106
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_cdc_if.h
@@ -0,0 +1,130 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_cdc_if.h
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_cdc_if.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CDC_IF_H__
+#define __USBD_CDC_IF_H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_cdc.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @brief For Usb device.
+ * @{
+ */
+
+/** @defgroup USBD_CDC_IF USBD_CDC_IF
+ * @brief Usb VCP device module
+ * @{
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Defines USBD_CDC_IF_Exported_Defines
+ * @brief Defines.
+ * @{
+ */
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Types USBD_CDC_IF_Exported_Types
+ * @brief Types.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Macros USBD_CDC_IF_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_Variables USBD_CDC_IF_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/** CDC Interface callback. */
+extern USBD_CDC_ItfTypeDef USBD_Interface_fops_FS;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CDC_IF_Exported_FunctionsPrototype USBD_CDC_IF_Exported_FunctionsPrototype
+ * @brief Public functions declaration.
+ * @{
+ */
+
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len);
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CDC_IF_H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_conf.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_conf.h
new file mode 100644
index 0000000..f799387
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_conf.h
@@ -0,0 +1,179 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_conf.h
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_conf.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_CONF__H__
+#define __USBD_CONF__H__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include
+#include
+#include
+#include "main.h"
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup USBD_OTG_DRIVER
+ * @{
+ */
+
+/** @defgroup USBD_CONF USBD_CONF
+ * @brief Configuration file for Usb otg low level driver.
+ * @{
+ */
+
+/** @defgroup USBD_CONF_Exported_Variables USBD_CONF_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Defines USBD_CONF_Exported_Defines
+ * @brief Defines for configuration of the Usb device.
+ * @{
+ */
+
+/*---------- -----------*/
+#define USBD_MAX_NUM_INTERFACES 1
+/*---------- -----------*/
+#define USBD_MAX_NUM_CONFIGURATION 1
+/*---------- -----------*/
+#define USBD_MAX_STR_DESC_SIZ 512
+/*---------- -----------*/
+#define USBD_SUPPORT_USER_STRING 0
+/*---------- -----------*/
+#define USBD_DEBUG_LEVEL 0
+/*---------- -----------*/
+#define USBD_SELF_POWERED 1
+/*---------- -----------*/
+#define MAX_STATIC_ALLOC_SIZE 512
+
+/****************************************/
+/* #define for FS and HS identification */
+#define DEVICE_FS 0
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Macros USBD_CONF_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* Memory management macros */
+
+/** Alias for memory allocation. */
+#define USBD_malloc (uint32_t *)USBD_static_malloc
+
+/** Alias for memory release. */
+#define USBD_free USBD_static_free
+
+/** Alias for memory set. */
+#define USBD_memset /* Not used */
+
+/** Alias for memory copy. */
+#define USBD_memcpy /* Not used */
+
+/** Alias for delay. */
+#define USBD_Delay HAL_Delay
+
+/* For footprint reasons and since only one allocation is handled in the HID class
+ driver, the malloc/free is changed into a static allocation method */
+void *USBD_static_malloc(uint32_t size);
+void USBD_static_free(void *p);
+
+/* DEBUG macros */
+
+#if (USBD_DEBUG_LEVEL > 0)
+#define USBD_UsrLog(...) printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_UsrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 1)
+
+#define USBD_ErrLog(...) printf("ERROR: ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_ErrLog(...)
+#endif
+
+#if (USBD_DEBUG_LEVEL > 2)
+#define USBD_DbgLog(...) printf("DEBUG : ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBD_DbgLog(...)
+#endif
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_Types USBD_CONF_Exported_Types
+ * @brief Types.
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_CONF_Exported_FunctionsPrototype USBD_CONF_Exported_FunctionsPrototype
+ * @brief Declaration of public functions for Usb device.
+ * @{
+ */
+
+/* Exported functions -------------------------------------------------------*/
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_CONF__H__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_desc.h b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_desc.h
new file mode 100644
index 0000000..1603e30
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/include/usbd_desc.h
@@ -0,0 +1,145 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_desc.c
+ * @version : v2.0_Cube
+ * @brief : Header for usbd_conf.c file.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USBD_DESC__C__
+#define __USBD_DESC__C__
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_def.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @defgroup USBD_DESC USBD_DESC
+ * @brief Usb device descriptors module.
+ * @{
+ */
+
+/** @defgroup USBD_DESC_Exported_Constants USBD_DESC_Exported_Constants
+ * @brief Constants.
+ * @{
+ */
+#define DEVICE_ID1 (UID_BASE)
+#define DEVICE_ID2 (UID_BASE + 0x4)
+#define DEVICE_ID3 (UID_BASE + 0x8)
+
+#define USB_SIZ_STRING_SERIAL 0x1A
+
+/* USER CODE BEGIN EXPORTED_CONSTANTS */
+
+/* USER CODE END EXPORTED_CONSTANTS */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Defines USBD_DESC_Exported_Defines
+ * @brief Defines.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_DEFINES */
+
+/* USER CODE END EXPORTED_DEFINES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_TypesDefinitions USBD_DESC_Exported_TypesDefinitions
+ * @brief Types.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_TYPES */
+
+/* USER CODE END EXPORTED_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Macros USBD_DESC_Exported_Macros
+ * @brief Aliases.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_MACRO */
+
+/* USER CODE END EXPORTED_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_Variables USBD_DESC_Exported_Variables
+ * @brief Public variables.
+ * @{
+ */
+
+/** Descriptor for the Usb device. */
+extern USBD_DescriptorsTypeDef FS_Desc;
+
+/* USER CODE BEGIN EXPORTED_VARIABLES */
+
+/* USER CODE END EXPORTED_VARIABLES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Exported_FunctionsPrototype USBD_DESC_Exported_FunctionsPrototype
+ * @brief Public functions declaration.
+ * @{
+ */
+
+/* USER CODE BEGIN EXPORTED_FUNCTIONS */
+
+/* USER CODE END EXPORTED_FUNCTIONS */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USBD_DESC__C__ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/lib/README b/STM32/STM32CUBE/USB_VIRTUAL_PORT/lib/README
new file mode 100644
index 0000000..6debab1
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/lib/README
@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into executable file.
+
+The source code of each library should be placed in a an own separate directory
+("lib/your_library_name/[here are source files]").
+
+For example, see a structure of the following two libraries `Foo` and `Bar`:
+
+|--lib
+| |
+| |--Bar
+| | |--docs
+| | |--examples
+| | |--src
+| | |- Bar.c
+| | |- Bar.h
+| | |- library.json (optional, custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+| |
+| |--Foo
+| | |- Foo.c
+| | |- Foo.h
+| |
+| |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+ |- main.c
+
+and a contents of `src/main.c`:
+```
+#include
+#include
+
+int main (void)
+{
+ ...
+}
+
+```
+
+PlatformIO Library Dependency Finder will find automatically dependent
+libraries scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/platformio.ini b/STM32/STM32CUBE/USB_VIRTUAL_PORT/platformio.ini
new file mode 100644
index 0000000..a4c7789
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/platformio.ini
@@ -0,0 +1,5 @@
+[env:genericSTM32F103C8]
+platform = ststm32
+board = genericSTM32F103C8
+framework = stm32cube
+monitor_speed=115200
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/main.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/main.c
new file mode 100644
index 0000000..e4401cb
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/main.c
@@ -0,0 +1,84 @@
+#include "main.h"
+#include "usb_device.h"
+#include
+#include "usbd_cdc_if.h"
+void SystemClock_Config(void);
+static void MX_GPIO_Init(void);
+uint8_t *data = "Hello World from USB CDC\n";
+uint8_t buffer[64];
+uint8_t data_new =0;
+
+int main(void)
+{
+
+ HAL_Init();
+ SystemClock_Config();
+ MX_GPIO_Init();
+ MX_USB_DEVICE_Init();
+
+ while (1)
+ {
+ if(data_new == 1){
+ CDC_Transmit_FS(buffer, 64);
+ data_new = 0;
+ }
+ HAL_Delay (100);
+ }
+
+}
+
+
+void SystemClock_Config(void)
+{
+ RCC_OscInitTypeDef RCC_OscInitStruct = {0};
+ RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
+ RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
+
+ /** Initializes the CPU, AHB and APB busses clocks
+ */
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+ RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
+ RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /** Initializes the CPU, AHB and APB busses clocks
+ */
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
+ |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
+ PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5;
+ if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
+ {
+ Error_Handler();
+ }
+}
+
+static void MX_GPIO_Init(void)
+{
+ __HAL_RCC_GPIOD_CLK_ENABLE();
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+
+}
+
+void Error_Handler(void)
+{
+ /* USER CODE BEGIN Error_Handler_Debug */
+ /* User can add his own implementation to report the HAL error return state */
+
+ /* USER CODE END Error_Handler_Debug */
+}
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_hal_msp.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_hal_msp.c
new file mode 100644
index 0000000..6738470
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_hal_msp.c
@@ -0,0 +1,88 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * File Name : stm32f1xx_hal_msp.c
+ * Description : This file provides code for the MSP Initialization
+ * and de-Initialization codes.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN Define */
+
+/* USER CODE END Define */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN Macro */
+
+/* USER CODE END Macro */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* External functions --------------------------------------------------------*/
+/* USER CODE BEGIN ExternalFunctions */
+
+/* USER CODE END ExternalFunctions */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+/**
+ * Initializes the Global MSP.
+ */
+void HAL_MspInit(void)
+{
+ /* USER CODE BEGIN MspInit 0 */
+
+ /* USER CODE END MspInit 0 */
+
+ __HAL_RCC_AFIO_CLK_ENABLE();
+ __HAL_RCC_PWR_CLK_ENABLE();
+
+ /* System interrupt init*/
+
+ /** NOJTAG: JTAG-DP Disabled and SW-DP Enabled
+ */
+ __HAL_AFIO_REMAP_SWJ_NOJTAG();
+
+ /* USER CODE BEGIN MspInit 1 */
+
+ /* USER CODE END MspInit 1 */
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_it.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_it.c
new file mode 100644
index 0000000..5908ce4
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/stm32f1xx_it.c
@@ -0,0 +1,217 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file stm32f1xx_it.c
+ * @brief Interrupt Service Routines.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32f1xx_it.h"
+/* Private includes ----------------------------------------------------------*/
+/* USER CODE BEGIN Includes */
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* USER CODE BEGIN TD */
+
+/* USER CODE END TD */
+
+/* Private define ------------------------------------------------------------*/
+/* USER CODE BEGIN PD */
+
+/* USER CODE END PD */
+
+/* Private macro -------------------------------------------------------------*/
+/* USER CODE BEGIN PM */
+
+/* USER CODE END PM */
+
+/* Private variables ---------------------------------------------------------*/
+/* USER CODE BEGIN PV */
+
+/* USER CODE END PV */
+
+/* Private function prototypes -----------------------------------------------*/
+/* USER CODE BEGIN PFP */
+
+/* USER CODE END PFP */
+
+/* Private user code ---------------------------------------------------------*/
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* External variables --------------------------------------------------------*/
+extern PCD_HandleTypeDef hpcd_USB_FS;
+/* USER CODE BEGIN EV */
+
+/* USER CODE END EV */
+
+/******************************************************************************/
+/* Cortex-M3 Processor Interruption and Exception Handlers */
+/******************************************************************************/
+/**
+ * @brief This function handles Non maskable interrupt.
+ */
+void NMI_Handler(void)
+{
+ /* USER CODE BEGIN NonMaskableInt_IRQn 0 */
+
+ /* USER CODE END NonMaskableInt_IRQn 0 */
+ /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
+
+ /* USER CODE END NonMaskableInt_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Hard fault interrupt.
+ */
+void HardFault_Handler(void)
+{
+ /* USER CODE BEGIN HardFault_IRQn 0 */
+
+ /* USER CODE END HardFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_HardFault_IRQn 0 */
+ /* USER CODE END W1_HardFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Memory management fault.
+ */
+void MemManage_Handler(void)
+{
+ /* USER CODE BEGIN MemoryManagement_IRQn 0 */
+
+ /* USER CODE END MemoryManagement_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
+ /* USER CODE END W1_MemoryManagement_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Prefetch fault, memory access fault.
+ */
+void BusFault_Handler(void)
+{
+ /* USER CODE BEGIN BusFault_IRQn 0 */
+
+ /* USER CODE END BusFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_BusFault_IRQn 0 */
+ /* USER CODE END W1_BusFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles Undefined instruction or illegal state.
+ */
+void UsageFault_Handler(void)
+{
+ /* USER CODE BEGIN UsageFault_IRQn 0 */
+
+ /* USER CODE END UsageFault_IRQn 0 */
+ while (1)
+ {
+ /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
+ /* USER CODE END W1_UsageFault_IRQn 0 */
+ }
+}
+
+/**
+ * @brief This function handles System service call via SWI instruction.
+ */
+void SVC_Handler(void)
+{
+ /* USER CODE BEGIN SVCall_IRQn 0 */
+
+ /* USER CODE END SVCall_IRQn 0 */
+ /* USER CODE BEGIN SVCall_IRQn 1 */
+
+ /* USER CODE END SVCall_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Debug monitor.
+ */
+void DebugMon_Handler(void)
+{
+ /* USER CODE BEGIN DebugMonitor_IRQn 0 */
+
+ /* USER CODE END DebugMonitor_IRQn 0 */
+ /* USER CODE BEGIN DebugMonitor_IRQn 1 */
+
+ /* USER CODE END DebugMonitor_IRQn 1 */
+}
+
+/**
+ * @brief This function handles Pendable request for system service.
+ */
+void PendSV_Handler(void)
+{
+ /* USER CODE BEGIN PendSV_IRQn 0 */
+
+ /* USER CODE END PendSV_IRQn 0 */
+ /* USER CODE BEGIN PendSV_IRQn 1 */
+
+ /* USER CODE END PendSV_IRQn 1 */
+}
+
+/**
+ * @brief This function handles System tick timer.
+ */
+void SysTick_Handler(void)
+{
+ /* USER CODE BEGIN SysTick_IRQn 0 */
+
+ /* USER CODE END SysTick_IRQn 0 */
+ HAL_IncTick();
+ /* USER CODE BEGIN SysTick_IRQn 1 */
+
+ /* USER CODE END SysTick_IRQn 1 */
+}
+
+/******************************************************************************/
+/* STM32F1xx Peripheral Interrupt Handlers */
+/* Add here the Interrupt Handlers for the used peripherals. */
+/* For the available peripheral interrupt handler names, */
+/* please refer to the startup file (startup_stm32f1xx.s). */
+/******************************************************************************/
+
+/**
+ * @brief This function handles USB low priority or CAN RX0 interrupts.
+ */
+void USB_LP_CAN1_RX0_IRQHandler(void)
+{
+ /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 0 */
+
+ /* USER CODE END USB_LP_CAN1_RX0_IRQn 0 */
+ HAL_PCD_IRQHandler(&hpcd_USB_FS);
+ /* USER CODE BEGIN USB_LP_CAN1_RX0_IRQn 1 */
+
+ /* USER CODE END USB_LP_CAN1_RX0_IRQn 1 */
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/system_stm32f1xx.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/system_stm32f1xx.c
new file mode 100644
index 0000000..789b551
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/system_stm32f1xx.c
@@ -0,0 +1,448 @@
+/**
+ ******************************************************************************
+ * @file system_stm32f1xx.c
+ * @author MCD Application Team
+ * @version V4.2.0
+ * @date 31-March-2017
+ * @brief CMSIS Cortex-M3 Device Peripheral Access Layer System Source File.
+ *
+ * 1. This file provides two functions and one global variable to be called from
+ * user application:
+ * - SystemInit(): Setups the system clock (System clock source, PLL Multiplier
+ * factors, AHB/APBx prescalers and Flash settings).
+ * This function is called at startup just after reset and
+ * before branch to main program. This call is made inside
+ * the "startup_stm32f1xx_xx.s" file.
+ *
+ * - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
+ * by the user application to setup the SysTick
+ * timer or configure other parameters.
+ *
+ * - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
+ * be called whenever the core clock is changed
+ * during program execution.
+ *
+ * 2. After each device reset the HSI (8 MHz) is used as system clock source.
+ * Then SystemInit() function is called, in "startup_stm32f1xx_xx.s" file, to
+ * configure the system clock before to branch to main program.
+ *
+ * 4. The default value of HSE crystal is set to 8 MHz (or 25 MHz, depending on
+ * the product used), refer to "HSE_VALUE".
+ * When HSE is used as system clock source, directly or through PLL, and you
+ * are using different crystal you have to adapt the HSE value to your own
+ * configuration.
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT(c) 2017 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/** @addtogroup CMSIS
+ * @{
+ */
+
+/** @addtogroup stm32f1xx_system
+ * @{
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Includes
+ * @{
+ */
+
+#include "stm32f1xx.h"
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_TypesDefinitions
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Defines
+ * @{
+ */
+
+#if !defined (HSE_VALUE)
+ #define HSE_VALUE 8000000U /*!< Default value of the External oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSE_VALUE */
+
+#if !defined (HSI_VALUE)
+ #define HSI_VALUE 8000000U /*!< Default value of the Internal oscillator in Hz.
+ This value can be provided and adapted by the user application. */
+#endif /* HSI_VALUE */
+
+/*!< Uncomment the following line if you need to use external SRAM */
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+/* #define DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/*!< Uncomment the following line if you need to relocate your vector Table in
+ Internal SRAM. */
+/* #define VECT_TAB_SRAM */
+#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
+ This value must be a multiple of 0x200. */
+
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Variables
+ * @{
+ */
+
+/*******************************************************************************
+* Clock Definitions
+*******************************************************************************/
+#if defined(STM32F100xB) ||defined(STM32F100xE)
+ uint32_t SystemCoreClock = 24000000U; /*!< System Clock Frequency (Core Clock) */
+#else /*!< HSI Selected as System Clock source */
+ uint32_t SystemCoreClock = 72000000U; /*!< System Clock Frequency (Core Clock) */
+#endif
+
+const uint8_t AHBPrescTable[16U] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
+const uint8_t APBPrescTable[8U] = {0, 0, 0, 0, 1, 2, 3, 4};
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_FunctionPrototypes
+ * @{
+ */
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+#ifdef DATA_IN_ExtSRAM
+ static void SystemInit_ExtMemCtl(void);
+#endif /* DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/**
+ * @}
+ */
+
+/** @addtogroup STM32F1xx_System_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Setup the microcontroller system
+ * Initialize the Embedded Flash Interface, the PLL and update the
+ * SystemCoreClock variable.
+ * @note This function should be used only after reset.
+ * @param None
+ * @retval None
+ */
+void SystemInit (void)
+{
+ /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
+ /* Set HSION bit */
+ RCC->CR |= 0x00000001U;
+
+ /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
+#if !defined(STM32F105xC) && !defined(STM32F107xC)
+ RCC->CFGR &= 0xF8FF0000U;
+#else
+ RCC->CFGR &= 0xF0FF0000U;
+#endif /* STM32F105xC */
+
+ /* Reset HSEON, CSSON and PLLON bits */
+ RCC->CR &= 0xFEF6FFFFU;
+
+ /* Reset HSEBYP bit */
+ RCC->CR &= 0xFFFBFFFFU;
+
+ /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
+ RCC->CFGR &= 0xFF80FFFFU;
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+ /* Reset PLL2ON and PLL3ON bits */
+ RCC->CR &= 0xEBFFFFFFU;
+
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x00FF0000U;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000U;
+#elif defined(STM32F100xB) || defined(STM32F100xE)
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000U;
+
+ /* Reset CFGR2 register */
+ RCC->CFGR2 = 0x00000000U;
+#else
+ /* Disable all interrupts and clear pending bits */
+ RCC->CIR = 0x009F0000U;
+#endif /* STM32F105xC */
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+ #ifdef DATA_IN_ExtSRAM
+ SystemInit_ExtMemCtl();
+ #endif /* DATA_IN_ExtSRAM */
+#endif
+
+#ifdef VECT_TAB_SRAM
+ SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
+#else
+ SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
+#endif
+}
+
+/**
+ * @brief Update SystemCoreClock variable according to Clock Register Values.
+ * The SystemCoreClock variable contains the core clock (HCLK), it can
+ * be used by the user application to setup the SysTick timer or configure
+ * other parameters.
+ *
+ * @note Each time the core clock (HCLK) changes, this function must be called
+ * to update SystemCoreClock variable value. Otherwise, any configuration
+ * based on this variable will be incorrect.
+ *
+ * @note - The system frequency computed by this function is not the real
+ * frequency in the chip. It is calculated based on the predefined
+ * constant and the selected clock source:
+ *
+ * - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(*)
+ *
+ * - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(**)
+ *
+ * - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(**)
+ * or HSI_VALUE(*) multiplied by the PLL factors.
+ *
+ * (*) HSI_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz) but the real value may vary depending on the variations
+ * in voltage and temperature.
+ *
+ * (**) HSE_VALUE is a constant defined in stm32f1xx.h file (default value
+ * 8 MHz or 25 MHz, depending on the product used), user has to ensure
+ * that HSE_VALUE is same as the real frequency of the crystal used.
+ * Otherwise, this function may have wrong result.
+ *
+ * - The result of this function could be not correct when using fractional
+ * value for HSE crystal.
+ * @param None
+ * @retval None
+ */
+void SystemCoreClockUpdate (void)
+{
+ uint32_t tmp = 0U, pllmull = 0U, pllsource = 0U;
+
+#if defined(STM32F105xC) || defined(STM32F107xC)
+ uint32_t prediv1source = 0U, prediv1factor = 0U, prediv2factor = 0U, pll2mull = 0U;
+#endif /* STM32F105xC */
+
+#if defined(STM32F100xB) || defined(STM32F100xE)
+ uint32_t prediv1factor = 0U;
+#endif /* STM32F100xB or STM32F100xE */
+
+ /* Get SYSCLK source -------------------------------------------------------*/
+ tmp = RCC->CFGR & RCC_CFGR_SWS;
+
+ switch (tmp)
+ {
+ case 0x00U: /* HSI used as system clock */
+ SystemCoreClock = HSI_VALUE;
+ break;
+ case 0x04U: /* HSE used as system clock */
+ SystemCoreClock = HSE_VALUE;
+ break;
+ case 0x08U: /* PLL used as system clock */
+
+ /* Get PLL clock source and multiplication factor ----------------------*/
+ pllmull = RCC->CFGR & RCC_CFGR_PLLMULL;
+ pllsource = RCC->CFGR & RCC_CFGR_PLLSRC;
+
+#if !defined(STM32F105xC) && !defined(STM32F107xC)
+ pllmull = ( pllmull >> 18U) + 2U;
+
+ if (pllsource == 0x00U)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
+ }
+ else
+ {
+ #if defined(STM32F100xB) || defined(STM32F100xE)
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ #else
+ /* HSE selected as PLL clock entry */
+ if ((RCC->CFGR & RCC_CFGR_PLLXTPRE) != (uint32_t)RESET)
+ {/* HSE oscillator clock divided by 2 */
+ SystemCoreClock = (HSE_VALUE >> 1U) * pllmull;
+ }
+ else
+ {
+ SystemCoreClock = HSE_VALUE * pllmull;
+ }
+ #endif
+ }
+#else
+ pllmull = pllmull >> 18U;
+
+ if (pllmull != 0x0DU)
+ {
+ pllmull += 2U;
+ }
+ else
+ { /* PLL multiplication factor = PLL input clock * 6.5 */
+ pllmull = 13U / 2U;
+ }
+
+ if (pllsource == 0x00U)
+ {
+ /* HSI oscillator clock divided by 2 selected as PLL clock entry */
+ SystemCoreClock = (HSI_VALUE >> 1U) * pllmull;
+ }
+ else
+ {/* PREDIV1 selected as PLL clock entry */
+
+ /* Get PREDIV1 clock source and division factor */
+ prediv1source = RCC->CFGR2 & RCC_CFGR2_PREDIV1SRC;
+ prediv1factor = (RCC->CFGR2 & RCC_CFGR2_PREDIV1) + 1U;
+
+ if (prediv1source == 0U)
+ {
+ /* HSE oscillator clock selected as PREDIV1 clock entry */
+ SystemCoreClock = (HSE_VALUE / prediv1factor) * pllmull;
+ }
+ else
+ {/* PLL2 clock selected as PREDIV1 clock entry */
+
+ /* Get PREDIV2 division factor and PLL2 multiplication factor */
+ prediv2factor = ((RCC->CFGR2 & RCC_CFGR2_PREDIV2) >> 4U) + 1U;
+ pll2mull = ((RCC->CFGR2 & RCC_CFGR2_PLL2MUL) >> 8U) + 2U;
+ SystemCoreClock = (((HSE_VALUE / prediv2factor) * pll2mull) / prediv1factor) * pllmull;
+ }
+ }
+#endif /* STM32F105xC */
+ break;
+
+ default:
+ SystemCoreClock = HSI_VALUE;
+ break;
+ }
+
+ /* Compute HCLK clock frequency ----------------*/
+ /* Get HCLK prescaler */
+ tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> 4U)];
+ /* HCLK clock frequency */
+ SystemCoreClock >>= tmp;
+}
+
+#if defined(STM32F100xE) || defined(STM32F101xE) || defined(STM32F101xG) || defined(STM32F103xE) || defined(STM32F103xG)
+/**
+ * @brief Setup the external memory controller. Called in startup_stm32f1xx.s
+ * before jump to __main
+ * @param None
+ * @retval None
+ */
+#ifdef DATA_IN_ExtSRAM
+/**
+ * @brief Setup the external memory controller.
+ * Called in startup_stm32f1xx_xx.s/.c before jump to main.
+ * This function configures the external SRAM mounted on STM3210E-EVAL
+ * board (STM32 High density devices). This SRAM will be used as program
+ * data memory (including heap and stack).
+ * @param None
+ * @retval None
+ */
+void SystemInit_ExtMemCtl(void)
+{
+ __IO uint32_t tmpreg;
+ /*!< FSMC Bank1 NOR/SRAM3 is used for the STM3210E-EVAL, if another Bank is
+ required, then adjust the Register Addresses */
+
+ /* Enable FSMC clock */
+ RCC->AHBENR = 0x00000114U;
+
+ /* Delay after an RCC peripheral clock enabling */
+ tmpreg = READ_BIT(RCC->AHBENR, RCC_AHBENR_FSMCEN);
+
+ /* Enable GPIOD, GPIOE, GPIOF and GPIOG clocks */
+ RCC->APB2ENR = 0x000001E0U;
+
+ /* Delay after an RCC peripheral clock enabling */
+ tmpreg = READ_BIT(RCC->APB2ENR, RCC_APB2ENR_IOPDEN);
+
+ (void)(tmpreg);
+
+/* --------------- SRAM Data lines, NOE and NWE configuration ---------------*/
+/*---------------- SRAM Address lines configuration -------------------------*/
+/*---------------- NOE and NWE configuration --------------------------------*/
+/*---------------- NE3 configuration ----------------------------------------*/
+/*---------------- NBL0, NBL1 configuration ---------------------------------*/
+
+ GPIOD->CRL = 0x44BB44BBU;
+ GPIOD->CRH = 0xBBBBBBBBU;
+
+ GPIOE->CRL = 0xB44444BBU;
+ GPIOE->CRH = 0xBBBBBBBBU;
+
+ GPIOF->CRL = 0x44BBBBBBU;
+ GPIOF->CRH = 0xBBBB4444U;
+
+ GPIOG->CRL = 0x44BBBBBBU;
+ GPIOG->CRH = 0x444B4B44U;
+
+/*---------------- FSMC Configuration ---------------------------------------*/
+/*---------------- Enable FSMC Bank1_SRAM Bank ------------------------------*/
+
+ FSMC_Bank1->BTCR[4U] = 0x00001091U;
+ FSMC_Bank1->BTCR[5U] = 0x00110212U;
+}
+#endif /* DATA_IN_ExtSRAM */
+#endif /* STM32F100xE || STM32F101xE || STM32F101xG || STM32F103xE || STM32F103xG */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usb_device.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usb_device.c
new file mode 100644
index 0000000..8ba0434
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usb_device.c
@@ -0,0 +1,102 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usb_device.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the USB Device
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_device.h"
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_cdc.h"
+#include "usbd_cdc_if.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* USB Device Core handle declaration. */
+USBD_HandleTypeDef hUsbDeviceFS;
+
+/*
+ * -- Insert your variables declaration here --
+ */
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/*
+ * -- Insert your external function declaration here --
+ */
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/**
+ * Init USB device Library, add supported class and start the library
+ * @retval None
+ */
+void MX_USB_DEVICE_Init(void)
+{
+ /* USER CODE BEGIN USB_DEVICE_Init_PreTreatment */
+
+ /* USER CODE END USB_DEVICE_Init_PreTreatment */
+
+ /* Init Device Library, add supported class and start the library. */
+ if (USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+ if (USBD_Start(&hUsbDeviceFS) != USBD_OK)
+ {
+ Error_Handler();
+ }
+
+ /* USER CODE BEGIN USB_DEVICE_Init_PostTreatment */
+
+ /* USER CODE END USB_DEVICE_Init_PostTreatment */
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_cdc_if.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_cdc_if.c
new file mode 100644
index 0000000..3238a53
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_cdc_if.c
@@ -0,0 +1,185 @@
+
+#include "usbd_cdc_if.h"
+#include
+
+#define APP_RX_DATA_SIZE 1000
+#define APP_TX_DATA_SIZE 1000
+
+uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
+uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
+extern USBD_HandleTypeDef hUsbDeviceFS;
+static int8_t CDC_Init_FS(void);
+static int8_t CDC_DeInit_FS(void);
+static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length);
+static int8_t CDC_Receive_FS(uint8_t* pbuf, uint32_t *Len);
+extern uint8_t buffer[64];
+extern uint8_t data_new;
+
+USBD_CDC_ItfTypeDef USBD_Interface_fops_FS =
+{
+ CDC_Init_FS,
+ CDC_DeInit_FS,
+ CDC_Control_FS,
+ CDC_Receive_FS
+};
+
+static int8_t CDC_Init_FS(void)
+{
+
+ USBD_CDC_SetTxBuffer(&hUsbDeviceFS, UserTxBufferFS, 0);
+ USBD_CDC_SetRxBuffer(&hUsbDeviceFS, UserRxBufferFS);
+ return (USBD_OK);
+ /* USER CODE END 3 */
+}
+
+/**
+ * @brief DeInitializes the CDC media low layer
+ * @retval USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_DeInit_FS(void)
+{
+ /* USER CODE BEGIN 4 */
+ return (USBD_OK);
+ /* USER CODE END 4 */
+}
+
+/**
+ * @brief Manage the CDC class requests
+ * @param cmd: Command code
+ * @param pbuf: Buffer containing command data (request parameters)
+ * @param length: Number of data to be sent (in bytes)
+ * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Control_FS(uint8_t cmd, uint8_t* pbuf, uint16_t length)
+{
+ /* USER CODE BEGIN 5 */
+ switch(cmd)
+ {
+ case CDC_SEND_ENCAPSULATED_COMMAND:
+
+ break;
+
+ case CDC_GET_ENCAPSULATED_RESPONSE:
+
+ break;
+
+ case CDC_SET_COMM_FEATURE:
+
+ break;
+
+ case CDC_GET_COMM_FEATURE:
+
+ break;
+
+ case CDC_CLEAR_COMM_FEATURE:
+
+ break;
+
+ /*******************************************************************************/
+ /* Line Coding Structure */
+ /*-----------------------------------------------------------------------------*/
+ /* Offset | Field | Size | Value | Description */
+ /* 0 | dwDTERate | 4 | Number |Data terminal rate, in bits per second*/
+ /* 4 | bCharFormat | 1 | Number | Stop bits */
+ /* 0 - 1 Stop bit */
+ /* 1 - 1.5 Stop bits */
+ /* 2 - 2 Stop bits */
+ /* 5 | bParityType | 1 | Number | Parity */
+ /* 0 - None */
+ /* 1 - Odd */
+ /* 2 - Even */
+ /* 3 - Mark */
+ /* 4 - Space */
+ /* 6 | bDataBits | 1 | Number Data bits (5, 6, 7, 8 or 16). */
+ /*******************************************************************************/
+ case CDC_SET_LINE_CODING:
+
+ break;
+
+ case CDC_GET_LINE_CODING:
+
+ break;
+
+ case CDC_SET_CONTROL_LINE_STATE:
+
+ break;
+
+ case CDC_SEND_BREAK:
+
+ break;
+
+ default:
+ break;
+ }
+
+ return (USBD_OK);
+ /* USER CODE END 5 */
+}
+
+/**
+ * @brief Data received over USB OUT endpoint are sent over CDC interface
+ * through this function.
+ *
+ * @note
+ * This function will block any OUT packet reception on USB endpoint
+ * untill exiting this function. If you exit this function before transfer
+ * is complete on CDC interface (ie. using DMA controller) it will result
+ * in receiving more data while previous ones are still not sent.
+ *
+ * @param Buf: Buffer of data to be received
+ * @param Len: Number of data received (in bytes)
+ * @retval Result of the operation: USBD_OK if all operations are OK else USBD_FAIL
+ */
+static int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
+{
+ /* USER CODE BEGIN 6 */
+ USBD_CDC_SetRxBuffer(&hUsbDeviceFS, &Buf[0]);
+ USBD_CDC_ReceivePacket(&hUsbDeviceFS);
+
+ memset (buffer,'\0',64);
+ uint8_t len = (uint8_t)*Len;
+ memcpy(buffer,Buf,len);
+ memset(Buf,'\0',len);
+ data_new = 1;
+ return (USBD_OK);
+ /* USER CODE END 6 */
+}
+
+/**
+ * @brief CDC_Transmit_FS
+ * Data to send over USB IN endpoint are sent over CDC interface
+ * through this function.
+ * @note
+ *
+ *
+ * @param Buf: Buffer of data to be sent
+ * @param Len: Number of data to be sent (in bytes)
+ * @retval USBD_OK if all operations are OK else USBD_FAIL or USBD_BUSY
+ */
+uint8_t CDC_Transmit_FS(uint8_t* Buf, uint16_t Len)
+{
+ uint8_t result = USBD_OK;
+ /* USER CODE BEGIN 7 */
+ USBD_CDC_HandleTypeDef *hcdc = (USBD_CDC_HandleTypeDef*)hUsbDeviceFS.pClassData;
+ if (hcdc->TxState != 0){
+ return USBD_BUSY;
+ }
+ USBD_CDC_SetTxBuffer(&hUsbDeviceFS, Buf, Len);
+ result = USBD_CDC_TransmitPacket(&hUsbDeviceFS);
+ /* USER CODE END 7 */
+ return result;
+}
+
+/* USER CODE BEGIN PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/* USER CODE END PRIVATE_FUNCTIONS_IMPLEMENTATION */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_conf.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_conf.c
new file mode 100644
index 0000000..ad97423
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_conf.c
@@ -0,0 +1,663 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_conf.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the board support package for the USB device library
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f1xx.h"
+#include "stm32f1xx_hal.h"
+#include "usbd_def.h"
+#include "usbd_core.h"
+#include "usbd_cdc.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+PCD_HandleTypeDef hpcd_USB_FS;
+void Error_Handler(void);
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/* USER CODE BEGIN PFP */
+/* Private function prototypes -----------------------------------------------*/
+
+/* USER CODE END PFP */
+
+/* Private functions ---------------------------------------------------------*/
+static USBD_StatusTypeDef USBD_Get_USB_Status(HAL_StatusTypeDef hal_status);
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+else
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state);
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+
+/*******************************************************************************
+ LL Driver Callbacks (PCD -> USB Device Library)
+*******************************************************************************/
+/* MSP Init */
+
+void HAL_PCD_MspInit(PCD_HandleTypeDef* pcdHandle)
+{
+ if(pcdHandle->Instance==USB)
+ {
+ /* USER CODE BEGIN USB_MspInit 0 */
+
+ /* USER CODE END USB_MspInit 0 */
+ /* Peripheral clock enable */
+ __HAL_RCC_USB_CLK_ENABLE();
+
+ /* Peripheral interrupt init */
+ HAL_NVIC_SetPriority(USB_LP_CAN1_RX0_IRQn, 0, 0);
+ HAL_NVIC_EnableIRQ(USB_LP_CAN1_RX0_IRQn);
+ /* USER CODE BEGIN USB_MspInit 1 */
+
+ /* USER CODE END USB_MspInit 1 */
+ }
+}
+
+void HAL_PCD_MspDeInit(PCD_HandleTypeDef* pcdHandle)
+{
+ if(pcdHandle->Instance==USB)
+ {
+ /* USER CODE BEGIN USB_MspDeInit 0 */
+
+ /* USER CODE END USB_MspDeInit 0 */
+ /* Peripheral clock disable */
+ __HAL_RCC_USB_CLK_DISABLE();
+
+ /* Peripheral interrupt Deinit*/
+ HAL_NVIC_DisableIRQ(USB_LP_CAN1_RX0_IRQn);
+
+ /* USER CODE BEGIN USB_MspDeInit 1 */
+
+ /* USER CODE END USB_MspDeInit 1 */
+ }
+}
+
+/**
+ * @brief Setup stage callback
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_SetupStage((USBD_HandleTypeDef*)hpcd->pData, (uint8_t *)hpcd->Setup);
+}
+
+/**
+ * @brief Data Out stage callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DataOutStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
+}
+
+/**
+ * @brief Data In stage callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DataInStage((USBD_HandleTypeDef*)hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
+}
+
+/**
+ * @brief SOF callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_SOF((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Reset callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_SpeedTypeDef speed = USBD_SPEED_FULL;
+
+ if ( hpcd->Init.speed != PCD_SPEED_FULL)
+ {
+ Error_Handler();
+ }
+ /* Set Speed. */
+ USBD_LL_SetSpeed((USBD_HandleTypeDef*)hpcd->pData, speed);
+
+ /* Reset Device. */
+ USBD_LL_Reset((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Suspend callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* Inform USB library that core enters in suspend Mode. */
+ USBD_LL_Suspend((USBD_HandleTypeDef*)hpcd->pData);
+ /* Enter in STOP mode. */
+ /* USER CODE BEGIN 2 */
+ if (hpcd->Init.low_power_enable)
+ {
+ /* Set SLEEPDEEP bit and SleepOnExit of Cortex System Control Register. */
+ SCB->SCR |= (uint32_t)((uint32_t)(SCB_SCR_SLEEPDEEP_Msk | SCB_SCR_SLEEPONEXIT_Msk));
+ }
+ /* USER CODE END 2 */
+}
+
+/**
+ * @brief Resume callback.
+ * When Low power mode is enabled the debug cannot be used (IAR, Keil doesn't support it)
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* USER CODE BEGIN 3 */
+
+ /* USER CODE END 3 */
+ USBD_LL_Resume((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief ISOOUTIncomplete callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_IsoOUTIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief ISOINIncomplete callback.
+ * @param hpcd: PCD handle
+ * @param epnum: Endpoint number
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#else
+void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_IsoINIncomplete((USBD_HandleTypeDef*)hpcd->pData, epnum);
+}
+
+/**
+ * @brief Connect callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DevConnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/**
+ * @brief Disconnect callback.
+ * @param hpcd: PCD handle
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+#else
+void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ USBD_LL_DevDisconnected((USBD_HandleTypeDef*)hpcd->pData);
+}
+
+/*******************************************************************************
+ LL Driver Interface (USB Device Library --> PCD)
+*******************************************************************************/
+
+/**
+ * @brief Initializes the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev)
+{
+ /* Init USB Ip. */
+ /* Link the driver to the stack. */
+ hpcd_USB_FS.pData = pdev;
+ pdev->pData = &hpcd_USB_FS;
+
+ hpcd_USB_FS.Instance = USB;
+ hpcd_USB_FS.Init.dev_endpoints = 8;
+ hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
+ hpcd_USB_FS.Init.low_power_enable = DISABLE;
+ hpcd_USB_FS.Init.lpm_enable = DISABLE;
+ hpcd_USB_FS.Init.battery_charging_enable = DISABLE;
+ if (HAL_PCD_Init(&hpcd_USB_FS) != HAL_OK)
+ {
+ Error_Handler( );
+ }
+
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+ /* Register USB PCD CallBacks */
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SOF_CB_ID, PCD_SOFCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SETUPSTAGE_CB_ID, PCD_SetupStageCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_RESET_CB_ID, PCD_ResetCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_SUSPEND_CB_ID, PCD_SuspendCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_RESUME_CB_ID, PCD_ResumeCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_CONNECT_CB_ID, PCD_ConnectCallback);
+ HAL_PCD_RegisterCallback(&hpcd_USB_FS, HAL_PCD_DISCONNECT_CB_ID, PCD_DisconnectCallback);
+
+ HAL_PCD_RegisterDataOutStageCallback(&hpcd_USB_FS, PCD_DataOutStageCallback);
+ HAL_PCD_RegisterDataInStageCallback(&hpcd_USB_FS, PCD_DataInStageCallback);
+ HAL_PCD_RegisterIsoOutIncpltCallback(&hpcd_USB_FS, PCD_ISOOUTIncompleteCallback);
+ HAL_PCD_RegisterIsoInIncpltCallback(&hpcd_USB_FS, PCD_ISOINIncompleteCallback);
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+ /* USER CODE BEGIN EndPoint_Configuration */
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x00 , PCD_SNG_BUF, 0x18);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x80 , PCD_SNG_BUF, 0x58);
+ /* USER CODE END EndPoint_Configuration */
+ /* USER CODE BEGIN EndPoint_Configuration_CDC */
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x81 , PCD_SNG_BUF, 0xC0);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x01 , PCD_SNG_BUF, 0x110);
+ HAL_PCDEx_PMAConfig((PCD_HandleTypeDef*)pdev->pData , 0x82 , PCD_SNG_BUF, 0x100);
+ /* USER CODE END EndPoint_Configuration_CDC */
+ return USBD_OK;
+}
+
+/**
+ * @brief De-Initializes the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_DeInit(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_DeInit(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Starts the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Start(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_Start(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Stops the low level portion of the device driver.
+ * @param pdev: Device handle
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Stop(USBD_HandleTypeDef *pdev)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_Stop(pdev->pData);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Opens an endpoint of the low level driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param ep_type: Endpoint type
+ * @param ep_mps: Endpoint max packet size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_OpenEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t ep_type, uint16_t ep_mps)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Open(pdev->pData, ep_addr, ep_mps, ep_type);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Closes an endpoint of the low level driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_CloseEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Close(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Flushes an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_FlushEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Flush(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Sets a Stall condition on an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_StallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Clears a Stall condition on an endpoint of the Low Level Driver.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_ClearStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Returns Stall condition.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval Stall (1: Yes, 0: No)
+ */
+uint8_t USBD_LL_IsStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ PCD_HandleTypeDef *hpcd = (PCD_HandleTypeDef*) pdev->pData;
+
+ if((ep_addr & 0x80) == 0x80)
+ {
+ return hpcd->IN_ep[ep_addr & 0x7F].is_stall;
+ }
+ else
+ {
+ return hpcd->OUT_ep[ep_addr & 0x7F].is_stall;
+ }
+}
+
+/**
+ * @brief Assigns a USB address to the device.
+ * @param pdev: Device handle
+ * @param dev_addr: Device address
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_SetUSBAddress(USBD_HandleTypeDef *pdev, uint8_t dev_addr)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_SetAddress(pdev->pData, dev_addr);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Transmits data over an endpoint.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param pbuf: Pointer to data to be sent
+ * @param size: Data size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_Transmit(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint16_t size)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Prepares an endpoint for reception.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @param pbuf: Pointer to data to be received
+ * @param size: Data size
+ * @retval USBD status
+ */
+USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev, uint8_t ep_addr, uint8_t *pbuf, uint16_t size)
+{
+ HAL_StatusTypeDef hal_status = HAL_OK;
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ hal_status = HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
+
+ usb_status = USBD_Get_USB_Status(hal_status);
+
+ return usb_status;
+}
+
+/**
+ * @brief Returns the last transfered packet size.
+ * @param pdev: Device handle
+ * @param ep_addr: Endpoint number
+ * @retval Recived Data Size
+ */
+uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr)
+{
+ return HAL_PCD_EP_GetRxCount((PCD_HandleTypeDef*) pdev->pData, ep_addr);
+}
+
+/**
+ * @brief Delays routine for the USB device library.
+ * @param Delay: Delay in ms
+ * @retval None
+ */
+void USBD_LL_Delay(uint32_t Delay)
+{
+ HAL_Delay(Delay);
+}
+
+/**
+ * @brief Static single allocation.
+ * @param size: Size of allocated memory
+ * @retval None
+ */
+void *USBD_static_malloc(uint32_t size)
+{
+ static uint32_t mem[(sizeof(USBD_CDC_HandleTypeDef)/4)+1];/* On 32-bit boundary */
+ return mem;
+}
+
+/**
+ * @brief Dummy memory free
+ * @param p: Pointer to allocated memory address
+ * @retval None
+ */
+void USBD_static_free(void *p)
+{
+
+}
+
+/**
+ * @brief Software Device Connection
+ * @param hpcd: PCD handle
+ * @param state: Connection state (0: disconnected / 1: connected)
+ * @retval None
+ */
+#if (USE_HAL_PCD_REGISTER_CALLBACKS == 1U)
+static void PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+#else
+void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state)
+#endif /* USE_HAL_PCD_REGISTER_CALLBACKS */
+{
+ /* USER CODE BEGIN 6 */
+ if (state == 1)
+ {
+ /* Configure Low connection state. */
+
+ }
+ else
+ {
+ /* Configure High connection state. */
+
+ }
+ /* USER CODE END 6 */
+}
+
+/**
+ * @brief Retuns the USB status depending on the HAL status:
+ * @param hal_status: HAL status
+ * @retval USB status
+ */
+USBD_StatusTypeDef USBD_Get_USB_Status(HAL_StatusTypeDef hal_status)
+{
+ USBD_StatusTypeDef usb_status = USBD_OK;
+
+ switch (hal_status)
+ {
+ case HAL_OK :
+ usb_status = USBD_OK;
+ break;
+ case HAL_ERROR :
+ usb_status = USBD_FAIL;
+ break;
+ case HAL_BUSY :
+ usb_status = USBD_BUSY;
+ break;
+ case HAL_TIMEOUT :
+ usb_status = USBD_FAIL;
+ break;
+ default :
+ usb_status = USBD_FAIL;
+ break;
+ }
+ return usb_status;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_desc.c b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_desc.c
new file mode 100644
index 0000000..1a6eca1
--- /dev/null
+++ b/STM32/STM32CUBE/USB_VIRTUAL_PORT/src/usbd_desc.c
@@ -0,0 +1,397 @@
+/* USER CODE BEGIN Header */
+/**
+ ******************************************************************************
+ * @file : usbd_desc.c
+ * @version : v2.0_Cube
+ * @brief : This file implements the USB device descriptors.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2021 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under Ultimate Liberty license
+ * SLA0044, the "License"; You may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * www.st.com/SLA0044
+ *
+ ******************************************************************************
+ */
+/* USER CODE END Header */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbd_core.h"
+#include "usbd_desc.h"
+#include "usbd_conf.h"
+
+/* USER CODE BEGIN INCLUDE */
+
+/* USER CODE END INCLUDE */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+
+/* USER CODE BEGIN PV */
+/* Private variables ---------------------------------------------------------*/
+
+/* USER CODE END PV */
+
+/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
+ * @{
+ */
+
+/** @addtogroup USBD_DESC
+ * @{
+ */
+
+/** @defgroup USBD_DESC_Private_TypesDefinitions USBD_DESC_Private_TypesDefinitions
+ * @brief Private types.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_TYPES */
+
+/* USER CODE END PRIVATE_TYPES */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Defines USBD_DESC_Private_Defines
+ * @brief Private defines.
+ * @{
+ */
+
+#define USBD_VID 1155
+#define USBD_LANGID_STRING 1033
+#define USBD_MANUFACTURER_STRING "STMicroelectronics"
+#define USBD_PID_FS 22336
+#define USBD_PRODUCT_STRING_FS "STM32 Virtual ComPort"
+#define USBD_CONFIGURATION_STRING_FS "CDC Config"
+#define USBD_INTERFACE_STRING_FS "CDC Interface"
+
+/* USER CODE BEGIN PRIVATE_DEFINES */
+
+/* USER CODE END PRIVATE_DEFINES */
+
+/**
+ * @}
+ */
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+/** @defgroup USBD_DESC_Private_Macros USBD_DESC_Private_Macros
+ * @brief Private macros.
+ * @{
+ */
+
+/* USER CODE BEGIN PRIVATE_MACRO */
+
+/* USER CODE END PRIVATE_MACRO */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
+ * @brief Private functions declaration.
+ * @{
+ */
+
+static void Get_SerialNum(void);
+static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len);
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBD_DESC_Private_FunctionPrototypes USBD_DESC_Private_FunctionPrototypes
+ * @brief Private functions declaration for FS.
+ * @{
+ */
+
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length);
+
+#ifdef USBD_SUPPORT_USER_STRING_DESC
+uint8_t * USBD_FS_USRStringDesc(USBD_SpeedTypeDef speed, uint8_t idx, uint16_t *length);
+#endif /* USBD_SUPPORT_USER_STRING_DESC */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+ * @brief Private variables.
+ * @{
+ */
+
+USBD_DescriptorsTypeDef FS_Desc =
+{
+ USBD_FS_DeviceDescriptor
+, USBD_FS_LangIDStrDescriptor
+, USBD_FS_ManufacturerStrDescriptor
+, USBD_FS_ProductStrDescriptor
+, USBD_FS_SerialStrDescriptor
+, USBD_FS_ConfigStrDescriptor
+, USBD_FS_InterfaceStrDescriptor
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/** USB standard device descriptor. */
+__ALIGN_BEGIN uint8_t USBD_FS_DeviceDesc[USB_LEN_DEV_DESC] __ALIGN_END =
+{
+ 0x12, /*bLength */
+ USB_DESC_TYPE_DEVICE, /*bDescriptorType*/
+ 0x00, /*bcdUSB */
+ 0x02,
+ 0x02, /*bDeviceClass*/
+ 0x02, /*bDeviceSubClass*/
+ 0x00, /*bDeviceProtocol*/
+ USB_MAX_EP0_SIZE, /*bMaxPacketSize*/
+ LOBYTE(USBD_VID), /*idVendor*/
+ HIBYTE(USBD_VID), /*idVendor*/
+ LOBYTE(USBD_PID_FS), /*idProduct*/
+ HIBYTE(USBD_PID_FS), /*idProduct*/
+ 0x00, /*bcdDevice rel. 2.00*/
+ 0x02,
+ USBD_IDX_MFC_STR, /*Index of manufacturer string*/
+ USBD_IDX_PRODUCT_STR, /*Index of product string*/
+ USBD_IDX_SERIAL_STR, /*Index of serial number string*/
+ USBD_MAX_NUM_CONFIGURATION /*bNumConfigurations*/
+};
+
+/* USB_DeviceDescriptor */
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Variables USBD_DESC_Private_Variables
+ * @brief Private variables.
+ * @{
+ */
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+
+/** USB lang indentifier descriptor. */
+__ALIGN_BEGIN uint8_t USBD_LangIDDesc[USB_LEN_LANGID_STR_DESC] __ALIGN_END =
+{
+ USB_LEN_LANGID_STR_DESC,
+ USB_DESC_TYPE_STRING,
+ LOBYTE(USBD_LANGID_STRING),
+ HIBYTE(USBD_LANGID_STRING)
+};
+
+#if defined ( __ICCARM__ ) /* IAR Compiler */
+ #pragma data_alignment=4
+#endif /* defined ( __ICCARM__ ) */
+/* Internal string descriptor. */
+__ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
+
+#if defined ( __ICCARM__ ) /*!< IAR Compiler */
+ #pragma data_alignment=4
+#endif
+__ALIGN_BEGIN uint8_t USBD_StringSerial[USB_SIZ_STRING_SERIAL] __ALIGN_END = {
+ USB_SIZ_STRING_SERIAL,
+ USB_DESC_TYPE_STRING,
+};
+
+/**
+ * @}
+ */
+
+/** @defgroup USBD_DESC_Private_Functions USBD_DESC_Private_Functions
+ * @brief Private functions.
+ * @{
+ */
+
+/**
+ * @brief Return the device descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ UNUSED(speed);
+ *length = sizeof(USBD_FS_DeviceDesc);
+ return USBD_FS_DeviceDesc;
+}
+
+/**
+ * @brief Return the LangID string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_LangIDStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ UNUSED(speed);
+ *length = sizeof(USBD_LangIDDesc);
+ return USBD_LangIDDesc;
+}
+
+/**
+ * @brief Return the product string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ProductStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == 0)
+ {
+ USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_PRODUCT_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the manufacturer string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ UNUSED(speed);
+ USBD_GetString((uint8_t *)USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the serial number string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_SerialStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ UNUSED(speed);
+ *length = USB_SIZ_STRING_SERIAL;
+
+ /* Update the serial number string descriptor with the data from the unique
+ * ID */
+ Get_SerialNum();
+
+ return (uint8_t *) USBD_StringSerial;
+}
+
+/**
+ * @brief Return the configuration string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_ConfigStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == USBD_SPEED_HIGH)
+ {
+ USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_CONFIGURATION_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Return the interface string descriptor
+ * @param speed : Current device speed
+ * @param length : Pointer to data length variable
+ * @retval Pointer to descriptor buffer
+ */
+uint8_t * USBD_FS_InterfaceStrDescriptor(USBD_SpeedTypeDef speed, uint16_t *length)
+{
+ if(speed == 0)
+ {
+ USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+ }
+ else
+ {
+ USBD_GetString((uint8_t *)USBD_INTERFACE_STRING_FS, USBD_StrDesc, length);
+ }
+ return USBD_StrDesc;
+}
+
+/**
+ * @brief Create the serial number string descriptor
+ * @param None
+ * @retval None
+ */
+static void Get_SerialNum(void)
+{
+ uint32_t deviceserial0, deviceserial1, deviceserial2;
+
+ deviceserial0 = *(uint32_t *) DEVICE_ID1;
+ deviceserial1 = *(uint32_t *) DEVICE_ID2;
+ deviceserial2 = *(uint32_t *) DEVICE_ID3;
+
+ deviceserial0 += deviceserial2;
+
+ if (deviceserial0 != 0)
+ {
+ IntToUnicode(deviceserial0, &USBD_StringSerial[2], 8);
+ IntToUnicode(deviceserial1, &USBD_StringSerial[18], 4);
+ }
+}
+
+/**
+ * @brief Convert Hex 32Bits value into char
+ * @param value: value to convert
+ * @param pbuf: pointer to the buffer
+ * @param len: buffer length
+ * @retval None
+ */
+static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len)
+{
+ uint8_t idx = 0;
+
+ for (idx = 0; idx < len; idx++)
+ {
+ if (((value >> 28)) < 0xA)
+ {
+ pbuf[2 * idx] = (value >> 28) + '0';
+ }
+ else
+ {
+ pbuf[2 * idx] = (value >> 28) + 'A' - 10;
+ }
+
+ value = value << 4;
+
+ pbuf[2 * idx + 1] = 0;
+ }
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/STM32/bitacora.md b/STM32/bitacora.md
index d9e61d4..a58b96f 100644
--- a/STM32/bitacora.md
+++ b/STM32/bitacora.md
@@ -6,6 +6,6 @@ Se instala la herramienta STM32CubeMX la cual ayudara con las configuraciones de
### Stm32Cube
-[X] Blink
-
-[ ] ADC
\ No newline at end of file
+- [X] Blink
+- [X] USB Virtual port
+- [ ] ADC
\ No newline at end of file