RT-Thread-关于使用CherryUSB时候使用外挂的usb phy 芯片配置的一点注意事项RT-Thread问答社区

关于使用CherryUSB时候使用外挂的usb phy 芯片配置的一点注意事项

发布于 2024-04-19 09:57:26 浏览：796 订阅该版

在使用CherryUSB时的一点注意事项。
我使用了CherryUSB（版本v1.0.0）在git上提供的f429的历程，硬件上外挂了usb3300，但是直接使用历程没跑起来，后来发现需要注意：
“CONFIG_USB_DWC2_ULPI_PHY” 这个宏不仅在main.c中有用到，在 usb_glue注意宏的定义位置；（我一开始就只在main.c中进行了声明，驱动起不来）

![1.0070539F24-EA74-4277-AAFD-CAE02890A102.png](https://oss-club.rt-thread.org/uploads/20240419/57efd366980daa4d4e700a68b266c001.png.webp)
在 CherryUSB（版本v1.2.0）中 “CONFIG_USB_DWC2_ULPI_PHY 改为了：“CONFIG_USB_HS”

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20240419/bd475b9a10b11235d32e4bf577d473af.png.webp)
```c
uint32_t usbh_get_dwc2_gccfg_conf(uint32_t reg_base)
{
#if __has_include("stm32h7xx.h") || __has_include("stm32f7xx.h") || __has_include("stm32l4xx.h")
#define USB_OTG_GLB ((USB_OTG_GlobalTypeDef *)(reg_base))
    /* B-peripheral session valid override enable */
    USB_OTG_GLB->GOTGCTL &= ~USB_OTG_GOTGCTL_BVALOEN;
    USB_OTG_GLB->GOTGCTL &= ~USB_OTG_GOTGCTL_BVALOVAL;
#endif

#ifdef CONFIG_USB_HS
#if defined(STM32F722xx) || defined(STM32F723xx) || defined(STM32F730xx) || defined(STM32F732xx) || defined(STM32F733xx)
    USB_OTG_GLB->GCCFG = (1 << 23);
    usb_hsphy_init(25000000U);
    return (1 << 23); /* Enable USB HS PHY USBx->GCCFG |= USB_OTG_GCCFG_PHYHSEN;*/
#else
    return 0;
#endif
#else
#if __has_include("stm32h7xx.h") || __has_include("stm32f7xx.h") || __has_include("stm32l4xx.h")
    return (1 << 16);
#else
    return ((1 << 16) | (1 << 21));
#endif
#endif
}
```
当然引脚初始化也要正确；

```c
#ifdef CONFIG_USB_DWC2_ULPI_PHY
    __HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**USB_OTG_HS GPIO Configuration    
    PI11     ------> USB_OTG_HS_ULPI_DIR
    PC0     ------> USB_OTG_HS_ULPI_STP
    PC3     ------> USB_OTG_HS_ULPI_NXT
    PA3     ------> USB_OTG_HS_ULPI_D0
    PA5     ------> USB_OTG_HS_ULPI_CK
    PB0     ------> USB_OTG_HS_ULPI_D1
    PB1     ------> USB_OTG_HS_ULPI_D2
    PB10     ------> USB_OTG_HS_ULPI_D3
    PB11     ------> USB_OTG_HS_ULPI_D4
    PB12     ------> USB_OTG_HS_ULPI_D5
    PB13     ------> USB_OTG_HS_ULPI_D6
    PB5     ------> USB_OTG_HS_ULPI_D7 
    */
    GPIO_InitStruct.Pin = GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_HS;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_3;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_HS;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_HS;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_10|GPIO_PIN_11
                          |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF10_OTG_HS;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/* Peripheral clock enable */
    __HAL_RCC_USB_OTG_HS_CLK_ENABLE();
    __HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();
		    /* Peripheral interrupt init*/
    HAL_NVIC_SetPriority(OTG_HS_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(OTG_HS_IRQn);
```
注意中断是否开启和中断回掉函数是否使用正确。
```c
void OTG_HS_IRQHandler(void)
{
  /* USER CODE BEGIN OTG_HS_IRQn 0 */

/* USER CODE END OTG_HS_IRQn 0 */
 // HAL_HCD_IRQHandler(&hhcd_USB_OTG_HS);
  /* USER CODE BEGIN OTG_HS_IRQn 1 */
    extern void USBH_IRQHandler(uint8_t busid);
    USBH_IRQHandler(0);
  /* USER CODE END OTG_HS_IRQn 1 */
}

```