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/**
******************************************************************************
* @file USB_Device/CDC_Standalone/Src/usbd_desc.c
* @author MCD Application Team
* @brief This file provides the USBD descriptors and string formatting method.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------ */
#include "usbd_core.h"
#include "usbd_desc.h"
#include "usbd_conf.h"
/* Private typedef ----------------------------------------------------------- */
/* Private define ------------------------------------------------------------ */
#define USBD_VID 0x0483
#define USBD_PID 0x5740
#define USBD_LANGID_STRING 0x409
#define USBD_MANUFACTURER_STRING "STMicroelectronics"
#define USBD_PRODUCT_HS_STRING "STM32 Virtual ComPort in HS Mode"
#define USBD_PRODUCT_FS_STRING "STM32 Virtual ComPort in FS Mode"
#define USBD_CONFIGURATION_HS_STRING "VCP Config"
#define USBD_INTERFACE_HS_STRING "VCP Interface"
#define USBD_CONFIGURATION_FS_STRING "VCP Config"
#define USBD_INTERFACE_FS_STRING "VCP Interface"
/* Private macro ------------------------------------------------------------- */
/* Private function prototypes ----------------------------------------------- */
uint8_t *USBD_VCP_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t * length);
uint8_t *USBD_VCP_LangIDStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
uint8_t *USBD_VCP_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
uint8_t *USBD_VCP_ProductStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
uint8_t *USBD_VCP_SerialStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
uint8_t *USBD_VCP_ConfigStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
uint8_t *USBD_VCP_InterfaceStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length);
/* Private variables --------------------------------------------------------- */
USBD_DescriptorsTypeDef VCP_Desc = {
USBD_VCP_DeviceDescriptor,
USBD_VCP_LangIDStrDescriptor,
USBD_VCP_ManufacturerStrDescriptor,
USBD_VCP_ProductStrDescriptor,
USBD_VCP_SerialStrDescriptor,
USBD_VCP_ConfigStrDescriptor,
USBD_VCP_InterfaceStrDescriptor,
};
/* USB Standard Device Descriptor */
#if defined ( __ICCARM__ ) /* !< IAR Compiler */
#pragma data_alignment=4
#endif
__ALIGN_BEGIN uint8_t USBD_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), /* idVendor */
HIBYTE(USBD_PID), /* idVendor */
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 */
/* USB Standard Device Descriptor */
#if defined ( __ICCARM__ ) /* !< IAR Compiler */
#pragma data_alignment=4
#endif
__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
__ALIGN_BEGIN uint8_t USBD_StringSerial[USB_SIZ_STRING_SERIAL] __ALIGN_END = {
USB_SIZ_STRING_SERIAL,
USB_DESC_TYPE_STRING,
};
#if defined ( __ICCARM__ ) /* !< IAR Compiler */
#pragma data_alignment=4
#endif
__ALIGN_BEGIN uint8_t USBD_StrDesc[USBD_MAX_STR_DESC_SIZ] __ALIGN_END;
/* Private functions --------------------------------------------------------- */
static void IntToUnicode(uint32_t value, uint8_t * pbuf, uint8_t len);
static void Get_SerialNum(void);
/**
* @brief Returns the device descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_DeviceDescriptor(USBD_SpeedTypeDef speed, uint16_t * length)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(speed);
*length = sizeof(USBD_DeviceDesc);
return (uint8_t *) USBD_DeviceDesc;
}
/**
* @brief Returns the LangID string descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_LangIDStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(speed);
*length = sizeof(USBD_LangIDDesc);
return (uint8_t *) USBD_LangIDDesc;
}
/**
* @brief Returns the product string descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_ProductStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
if (speed == 0)
{
USBD_GetString((uint8_t *) USBD_PRODUCT_HS_STRING, USBD_StrDesc, length);
}
else
{
USBD_GetString((uint8_t *) USBD_PRODUCT_FS_STRING, USBD_StrDesc, length);
}
return USBD_StrDesc;
}
/**
* @brief Returns the manufacturer string descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_ManufacturerStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
/* Prevent unused argument(s) compilation warning */
UNUSED(speed);
USBD_GetString((uint8_t *) USBD_MANUFACTURER_STRING, USBD_StrDesc, length);
return USBD_StrDesc;
}
/**
* @brief Returns 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_VCP_SerialStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
/* Prevent unused argument(s) compilation warning */
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 Returns the configuration string descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_ConfigStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
if (speed == USBD_SPEED_HIGH)
{
USBD_GetString((uint8_t *) USBD_CONFIGURATION_HS_STRING, USBD_StrDesc,
length);
}
else
{
USBD_GetString((uint8_t *) USBD_CONFIGURATION_FS_STRING, USBD_StrDesc,
length);
}
return USBD_StrDesc;
}
/**
* @brief Returns the interface string descriptor.
* @param speed: Current device speed
* @param length: Pointer to data length variable
* @retval Pointer to descriptor buffer
*/
uint8_t *USBD_VCP_InterfaceStrDescriptor(USBD_SpeedTypeDef speed,
uint16_t * length)
{
if (speed == 0)
{
USBD_GetString((uint8_t *) USBD_INTERFACE_HS_STRING, USBD_StrDesc, length);
}
else
{
USBD_GetString((uint8_t *) USBD_INTERFACE_FS_STRING, 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;
}
}
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