STM32 CubeMax 配置

我这里使用的是HS接口但使用的是内部FS核。

修改USB描述符

在 usbd_custom_hid_if.c 的 CUSTOM_HID_ReportDesc_HS 或 CUSTOM_HID_ReportDesc_FS

__ALIGN_BEGIN static uint8_t CUSTOM_HID_ReportDesc_HS[USBD_CUSTOM_HID_REPORT_DESC_SIZE] __ALIGN_END =
{
  /* USER CODE BEGIN 1 */
		0x05,0x8c, /* USAGE_PAGE (ST Page) */
    0x09,0x01, /* USAGE (Demo Kit) */
    0xa1,0x01, /* COLLECTION (Application) */

    // The Input report
    0x09,0x03, // USAGE ID - Vendor defined
    0x15,0x00, // LOGICAL_MINIMUM (0)
    0x26,0x00, 0xFF, // LOGICAL_MAXIMUM (255)
    0x75,0x08, // REPORT_SIZE (8bit)
    0x95,0x40, // REPORT_COUNT (64Byte)
    0x81,0x02, // INPUT (Data,Var,Abs)

    // The Output report
    0x09,0x04, // USAGE ID - Vendor defined
    0x15,0x00, // LOGICAL_MINIMUM (0)
    0x26,0x00,0xFF, // LOGICAL_MAXIMUM (255)
    0x75,0x08, // REPORT_SIZE (8bit)
    0x95,0x40, // REPORT_COUNT (64Byte)
    0x91,0x02, // OUTPUT (Data,Var,Abs)
  /* USER CODE END 1 */
   0xC0    /*     END_COLLECTION             */
};

修改HID设备PID VID

在 usbd_desc.c 中修改

#define USBD_VID     123
#define USBD_LANGID_STRING     1033
#define USBD_MANUFACTURER_STRING     "STM32"
#define USBD_PID_HS     33222
#define USBD_PRODUCT_STRING_HS     "HID name"
#define USBD_CONFIGURATION_STRING_HS     "Custom HID Config"
#define USBD_INTERFACE_STRING_HS     "Custom HID Interface"

#define USB_SIZ_BOS_DESC            0x0C

修改HID报告间隔

在 usbd_customhid.h 中

#ifndef CUSTOM_HID_HS_BINTERVAL
#define CUSTOM_HID_HS_BINTERVAL                      0x01U
#endif /* CUSTOM_HID_HS_BINTERVAL */

#ifndef CUSTOM_HID_FS_BINTERVAL
#define CUSTOM_HID_FS_BINTERVAL                      0x01U
#endif /* CUSTOM_HID_FS_BINTERVAL */

修改USB报告长度

在 usbd_conf.h 中

#define USBD_MAX_NUM_INTERFACES     1U
/*---------- -----------*/
#define USBD_MAX_NUM_CONFIGURATION     1U
/*---------- -----------*/
#define USBD_MAX_STR_DESC_SIZ     512U
/*---------- -----------*/
#define USBD_DEBUG_LEVEL     0U
/*---------- -----------*/
#define USBD_LPM_ENABLED     0U
/*---------- -----------*/
#define USBD_SELF_POWERED     1U
/*---------- -----------*/
#define USBD_CUSTOMHID_OUTREPORT_BUF_SIZE     64U
/*---------- -----------*/
#define USBD_CUSTOM_HID_REPORT_DESC_SIZE     33U
/*---------- -----------*/
#define CUSTOM_HID_HS_BINTERVAL     0x1U

在 usbd_customhid.h 中

#ifndef USBD_CUSTOMHID_OUTREPORT_BUF_SIZE
#define USBD_CUSTOMHID_OUTREPORT_BUF_SIZE            0x40U
#endif /* USBD_CUSTOMHID_OUTREPORT_BUF_SIZE */

#ifndef USBD_CUSTOM_HID_REPORT_DESC_SIZE
#define USBD_CUSTOM_HID_REPORT_DESC_SIZE             33U
#endif /* USBD_CUSTOM_HID_REPORT_DESC_SIZE */

发送和接收

HID报文每次收发必须为64字节

发送

在 usbd_customhid.c 中定义的函数

uint8_t USBD_CUSTOM_HID_SendReport(USBD_HandleTypeDef *pdev,
                                   uint8_t *report, uint16_t len);

extern USBD_HandleTypeDef hUsbDeviceHS;//声明外部定义的USB句柄

USBD_CUSTOM_HID_SendReport(&hUsbDeviceHS,usbtx,64);//将usbtx数组中的64字节数据发出去

接收

在 usbd_custom_hid_if.c 中

static int8_t CUSTOM_HID_OutEvent_HS(uint8_t event_idx, uint8_t state)
{
  /* USER CODE BEGIN 10 */
  UNUSED(event_idx);
  UNUSED(state);
	//获取接收指针
	USBD_CUSTOM_HID_HandleTypeDef     *hhid = (USBD_CUSTOM_HID_HandleTypeDef *)(hUsbDeviceHS.pClassData);
 	//将数据copy到接收缓存
	for(int i=0;i<64;i++) 
	{
			usbrx[i]=hhid->Report_buf[i];	
	} 
	//处理，或者在其他地方处理
	processData();
    /* Start next USB packet transfer once data processing is completed */
  if (USBD_CUSTOM_HID_ReceivePacket(&hUsbDeviceHS) != (uint8_t)USBD_OK)
  {
    return -1;
  }

  return (USBD_OK);
  /* USER CODE END 10 */
}