ST意法半导体中文论坛STM32 USB 复合设备多路虚拟串口乱码问题

Lex. 发表于 2018-5-2 14:40:29

STM32 USB 复合设备多路虚拟串口乱码问题

本帖最后由 Lex. 于 2018-5-3 08:48 编辑

在STM32 F103C8T6 实现 USB 多路虚拟串口，端点1的输出没问题，但是端点2的输出是乱码，@五哥1

/* 端点地址 */
/** @defgroup usbd_cdc_Exported_Defines
* @{
*/
#define CDC_IN_EP1                               0x81/* EP1 for data IN */
#define CDC_OUT_EP1                               0x01/* EP1 for data OUT */
#define CDC_CMD_EP1                               0x82/* EP2 for CDC commands */

/*    add    */
#define CDC_IN_EP2                               0x83/* EP2 for data IN */
#define CDC_OUT_EP2                               0x03/* EP2 for data OUT */
#define CDC_CMD_EP2                               0x84/* EP2 for CDC commands */

/* 配置描述符的*/

/* USB CDC device Configuration Descriptor */
__ALIGN_BEGIN uint8_t USBD_CDC_CfgFSDesc __ALIGN_END =
{
/*Configuration Descriptor*/
0x09, /* bLength: Configuration Descriptor size */
USB_DESC_TYPE_CONFIGURATION,    /* bDescriptorType: Configuration */
USB_CDC_CONFIG_DESC_SIZ,             /* wTotalLength:no of returned bytes */
0x00,

#ifdef DUAL_COM
0x04,
#else
0x02,/* bNumInterfaces: 2 interface */
#endif

0x01, /* bConfigurationValue: Configuration value */
0x00, /* iConfiguration: Index of string descriptor describing the configuration */
0xC0, /* bmAttributes: self powered */
0x32, /* MaxPower 0 mA */

/*---------------------------------------------------------------------------*/

#ifdef DUAL_COM
// IADInterface Association Descriptor
0x08,    // bLength: Interface Descriptor size
0x0B,    // bDescriptorType: IAD
0x00,    // bFirstInterface
0x02,    // bInterfaceCount
0x02,    // bFunctionClass: CDC
0x02,    // bFunctionSubClass
0x01,    // bFunctionProtocol
0x02,    // iFunction
#endif

/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
USB_DESC_TYPE_INTERFACE,/* bDescriptorType: Interface */
/* Interface descriptor type */
0x00, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x01, /* bInterfaceProtocol: Common AT commands */
0x00, /* iInterface: */

/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,

/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
0x01, /* bDataInterface: 1 */

/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */

/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
0x00, /* bMasterInterface: Communication class interface */
0x01, /* bSlaveInterface0: Data Class Interface */

/*Endpoint 2 Descriptor*/
0x07,                         /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
CDC_CMD_EP1,                   /* bEndpointAddress */
0x03,                         /* bmAttributes: Interrupt */
LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
HIBYTE(CDC_CMD_PACKET_SIZE),
0x10,                         /* bInterval: */
/*---------------------------------------------------------------------------*/

/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_INTERFACE,/* bDescriptorType: */
0x01, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x00, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */

/*Endpoint OUT Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT,    /* bDescriptorType: Endpoint */
CDC_OUT_EP1,                      /* bEndpointAddress */
0x02,                            /* bmAttributes: Bulk */
LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),/* wMaxPacketSize: */
HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
0x00,                            /* bInterval: ignore for Bulk transfer */

/*Endpoint IN Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT,    /* bDescriptorType: Endpoint */
CDC_IN_EP1,                      /* bEndpointAddress */
0x02,                            /* bmAttributes: Bulk */
LOBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),/* wMaxPacketSize: */
HIBYTE(CDC_DATA_FS_MAX_PACKET_SIZE),
0x00,                            /* bInterval: ignore for Bulk transfer */

#ifdef DUAL_COM
/*---------------------------------------------------------------------------*/
// IADInterface Association Descriptor
0x08,    // bLength: Interface Descriptor size
0x0B,             // bDescriptorType: IAD
0x02,    // bFirstInterface
0x02,    // bInterfaceCount
0x02,    // bFunctionClass: CDC
0x02,    // bFunctionSubClass
0x01,    // bFunctionProtocol
0x02,    // iFunction

/*Interface Descriptor */
0x09, /* bLength: Interface Descriptor size */
USB_DESC_TYPE_INTERFACE,/* bDescriptorType: Interface */
/* Interface descriptor type */
0x02, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x01, /* bNumEndpoints: One endpoints used */
0x02, /* bInterfaceClass: Communication Interface Class */
0x02, /* bInterfaceSubClass: Abstract Control Model */
0x01, /* bInterfaceProtocol: Common AT commands */
0x00, /* iInterface: */

/*Header Functional Descriptor*/
0x05, /* bLength: Endpoint Descriptor size */
0x24, /* bDescriptorType: CS_INTERFACE */
0x00, /* bDescriptorSubtype: Header Func Desc */
0x10, /* bcdCDC: spec release number */
0x01,

/*Call Management Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x01, /* bDescriptorSubtype: Call Management Func Desc */
0x00, /* bmCapabilities: D0+D1 */
0x01, /* bDataInterface: 1 */

/*ACM Functional Descriptor*/
0x04, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x02, /* bDescriptorSubtype: Abstract Control Management desc */
0x02, /* bmCapabilities */

/*Union Functional Descriptor*/
0x05, /* bFunctionLength */
0x24, /* bDescriptorType: CS_INTERFACE */
0x06, /* bDescriptorSubtype: Union func desc */
0x00, /* bMasterInterface: Communication class interface */
0x01, /* bSlaveInterface0: Data Class Interface */

/*Endpoint 2 Descriptor*/
0x07,                         /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT, /* bDescriptorType: Endpoint */
CDC_CMD_EP2,                   /* bEndpointAddress */
0x03,                         /* bmAttributes: Interrupt */
LOBYTE(CDC_CMD_PACKET_SIZE), /* wMaxPacketSize: */
HIBYTE(CDC_CMD_PACKET_SIZE),
0x10,                         /* bInterval: */
/*---------------------------------------------------------------------------*/

/*Data class interface descriptor*/
0x09, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_INTERFACE,/* bDescriptorType: */
0x03, /* bInterfaceNumber: Number of Interface */
0x00, /* bAlternateSetting: Alternate setting */
0x02, /* bNumEndpoints: Two endpoints used */
0x0A, /* bInterfaceClass: CDC */
0x00, /* bInterfaceSubClass: */
0x00, /* bInterfaceProtocol: */
0x00, /* iInterface: */

/*Endpoint OUT Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT,    /* bDescriptorType: Endpoint */
CDC_OUT_EP2,                      /* bEndpointAddress */
0x02,                            /* bmAttributes: Bulk */
LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),/* wMaxPacketSize: */
HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
0x00,                            /* bInterval: ignore for Bulk transfer */

/*Endpoint IN Descriptor*/
0x07, /* bLength: Endpoint Descriptor size */
USB_DESC_TYPE_ENDPOINT,    /* bDescriptorType: Endpoint */
CDC_IN_EP2,                      /* bEndpointAddress */
0x02,                            /* bmAttributes: Bulk */
LOBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),/* wMaxPacketSize: */
HIBYTE(CDC_DATA_HS_MAX_PACKET_SIZE),
0x00                            /* bInterval: ignore for Bulk transfer */

#endif

} ;

/* 端点初始化 */
/**
* @briefUSBD_CDC_Init
*       Initialize the CDC interface
* @parampdev: device instance
* @paramcfgidx: Configuration index
* @retval status
*/
static uint8_tUSBD_CDC_Init (USBD_HandleTypeDef *pdev,
                           uint8_t cfgidx)
{
uint8_t ret = 0;
USBD_CDC_HandleTypeDef *hcdc;

if(pdev->dev_speed == USBD_SPEED_HIGH)
{
/* Open EP IN */
USBD_LL_OpenEP(pdev,
               CDC_IN_EP1,
               USBD_EP_TYPE_BULK,
               CDC_DATA_HS_IN_PACKET_SIZE);

/* Open EP OUT */
USBD_LL_OpenEP(pdev,
               CDC_OUT_EP1,
               USBD_EP_TYPE_BULK,
               CDC_DATA_HS_OUT_PACKET_SIZE);

}
else
{
/* Open EP IN */
USBD_LL_OpenEP(pdev,
               CDC_IN_EP1,
               USBD_EP_TYPE_BULK,
               CDC_DATA_FS_IN_PACKET_SIZE);

/* Open EP OUT */
USBD_LL_OpenEP(pdev,
               CDC_OUT_EP1,
               USBD_EP_TYPE_BULK,
               CDC_DATA_FS_OUT_PACKET_SIZE);

#ifdef DUAL_COM
/* Open EP IN */
USBD_LL_OpenEP(pdev,
               CDC_IN_EP2,
               USBD_EP_TYPE_BULK,
               CDC_DATA_FS_IN_PACKET_SIZE);

/* Open EP OUT */
USBD_LL_OpenEP(pdev,
               CDC_OUT_EP2,
               USBD_EP_TYPE_BULK,
               CDC_DATA_FS_OUT_PACKET_SIZE);
#endif
}
/* Open Command IN EP */
USBD_LL_OpenEP(pdev,
            CDC_CMD_EP1,
            USBD_EP_TYPE_INTR,
            CDC_CMD_PACKET_SIZE);

///* Open Command IN EP */
USBD_LL_OpenEP(pdev,
            CDC_CMD_EP2,
            USBD_EP_TYPE_INTR,
            CDC_CMD_PACKET_SIZE);

pdev->pClassData = USBD_malloc(sizeof (USBD_CDC_HandleTypeDef));

if(pdev->pClassData == NULL)
{
ret = 1;
}
else
{
hcdc = (USBD_CDC_HandleTypeDef*) pdev->pClassData;

/* Initphysical Interface components */
((USBD_CDC_ItfTypeDef *)pdev->pUserData)->Init();

/* Init Xfer states */
hcdc->TxState =0;
hcdc->RxState =0;

if(pdev->dev_speed == USBD_SPEED_HIGH)
{
   /* Prepare Out endpoint to receive next packet */
   USBD_LL_PrepareReceive(pdev,
                        CDC_OUT_EP1,
                        hcdc->RxBuffer,
                        CDC_DATA_HS_OUT_PACKET_SIZE);
}
else
{
   /* Prepare Out endpoint to receive next packet */
   USBD_LL_PrepareReceive(pdev,
                        CDC_OUT_EP1,
                        hcdc->RxBuffer,
                        CDC_DATA_FS_OUT_PACKET_SIZE);

   USBD_LL_PrepareReceive(pdev,
                        CDC_OUT_EP2,
                        hcdc->RxBuffer,
                        CDC_DATA_FS_OUT_PACKET_SIZE);
}

}
return ret;
}

设备描述符

发送函数

PC 上监控端点1数据

端点2 数据：

两个端点发送相同的数据，但是PC端接收的却不同 ~

llp474129014 发表于 2018-5-2 16:39:07

多谢分享

mmuuss586 发表于 2018-5-2 16:46:34

:)
感谢分享；

Lex. 发表于 2018-5-3 08:48:15

问题解决了！！！
端点0 的Packet Buffer 的地址必须往后偏移
http://www.docin.com/p-760532785.html

笑尘一梦 发表于 2018-9-12 19:35:41

楼主，这边也遇到乱码的问题，端点0 的Packet Buffer 的地址必须往后偏移是在哪个地方改

John-2049691 发表于 2019-12-31 17:25:48

你好，我遇到同样的问题，能否把你的例程发上来给我参考下，谢谢！

星——星 发表于 2020-3-23 15:35:16

你好打扰了，最近调试 stm32L476 第二路串口接收正常，发送乱码，并且发送几次后会导致串口工具异常，重置后仍是如此，看了你说的修改地址偏移，但是生成的HAL代码好像没找到设置的位置，能指导一下吗，谢谢

星——星 发表于 2020-3-23 15:46:13

Lex. 发表于 2018-5-3 08:48
问题解决了！！！
端点0 的Packet Buffer 的地址必须往后偏移
http://www.docin.com/p-760532785.html ...

请问楼主，这个偏移地址新HAL生成的代码好像没有这个地址设置，求指教，

lw5413 发表于 2020-4-6 23:24:08

我也遇到这个问题，一直找原因，原来是这样的。。。不过如何修改呢？

lw5413 发表于 2020-4-12 11:38:31

需要把断点fifo size设到最小，原因不明

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STM32 USB 复合设备 多路虚拟串口乱码问题

STM32 USB 复合设备多路虚拟串口乱码问题