如何利用F407的USB_OTG_HS读写U盘

topstm · 发表于 2020-7-24 11:06:55

最近公司项目要用到双USB接口，A11、A12用作虚拟串口与电脑通讯用，利用B14、B15的USB_OTG_FS作全速读写U盘用，研究了几天移植探索者的---实验53 USB U盘(Host)实验，将A11、A12移植B14、B15无果，望有识人士、高手们指点，感激不尽！！！！！

EVahl · 发表于 2020-7-24 15:17:35

帮顶~~

nashui_sx · 发表于 2020-7-25 21:15:10

,USE_USB_OTG_FS,USE_EMBEDDED_PHY

void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
GPIO_InitTypeDef  GPIO_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_OTG_HS, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_OTG2_FS);//等于GPIO_AF_OTG_HS_FS
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_OTG2_FS);//等于GPIO_AF_OTG_HS_FS
}
/**
* @brief  USB_OTG_BSP_EnableInterrupt
*       Enable USB Global interrupt
* @param  None
* @retval None
*/
void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
{
NVIC_InitTypeDef NVIC_InitStructure;

NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}