标题:
STM32 USB虚拟串口（3）
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作者:
yuyang911220
时间:
2015-4-28 09:39
标题:
STM32 USB虚拟串口（3）
2，修改代码hw_config.c删除无用代码，新建立2组，读FIFO和写FIFO的函数。后面会用到。
代码如下：
代码2
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/*
Includes ------------------------------------------------------------------
*/
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#include
"
usb_lib.h
"
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#include
"
usb_prop.h
"
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#include
"
usb_desc.h
"
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#include
"
hw_config.h
"
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#include
"
usb_pwr.h
"
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#include
"
Queue.h
"
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/*
Private typedef -----------------------------------------------------------
*/
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/*
Private define ------------------------------------------------------------
*/
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/*
Private macro -------------------------------------------------------------
*/
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/*
Private variables ---------------------------------------------------------
*/
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ErrorStatus HSEStartUpStatus;
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USART_InitTypeDef USART_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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#define
USB_COM_RX_BUF_SIZE (1024 + 256)
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#define
USB_COM_TX_BUF_SIZE (1024 + 256)
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static
QUEUE8_t m_QueueUsbComRx = {
0
};
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static
QUEUE8_t m_QueueUsbComTx = {
0
};
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static
uint8_t m_UsbComRxBuf[USB_COM_RX_BUF_SIZE] = {
0
};
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static
uint8_t m_UsbComTxBuf[USB_COM_TX_BUF_SIZE] = {
0
};
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static
void
IntToUnicode (uint32_t value , uint8_t *
pbuf , uint8_t len);
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/*
Extern variables ----------------------------------------------------------
*/
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extern
LINE_CODING linecoding;
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/*
Private function prototypes -----------------------------------------------
*/
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/*
Private functions ---------------------------------------------------------
*/
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/*
******************************************************************************
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* Function Name : Set_System
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* Description : Configures Main system clocks & power
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* Input : None.
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* Return : None.
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******************************************************************************
*/
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void
Set_System(
void
)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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QUEUE_PacketCreate(&m_QueueUsbComRx, m_UsbComRxBuf,
sizeof
(m_UsbComRxBuf));
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QUEUE_PacketCreate(&m_QueueUsbComTx, m_UsbComTxBuf,
sizeof
(m_UsbComTxBuf));
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/*
Enable USB_DISCONNECT GPIO clock
*/
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIO_DISCONNECT, ENABLE);
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/*
Configure USB pull-up pin
*/
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GPIO_InitStructure.GPIO_Pin =
USB_DISCONNECT_PIN;
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GPIO_InitStructure.GPIO_Speed =
GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode =
GPIO_Mode_Out_PP;
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GPIO_Init(USB_DISCONNECT, &
GPIO_InitStructure);
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/*
Configure the EXTI line 18 connected internally to the USB IP
*/
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EXTI_ClearITPendingBit(EXTI_Line18);
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EXTI_InitStructure.EXTI_Line =
EXTI_Line18;
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EXTI_InitStructure.EXTI_Trigger =
EXTI_Trigger_Rising;
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EXTI_InitStructure.EXTI_LineCmd =
ENABLE;
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EXTI_Init(&
EXTI_InitStructure);
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}
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/*
******************************************************************************
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* Function Name : Set_USBClock
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* Description : Configures USB Clock input (48MHz)
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* Input : None.
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* Return : None.
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******************************************************************************
*/
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void
Set_USBClock(
void
)
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{
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/*
Select USBCLK source
*/
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RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
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/*
Enable the USB clock
*/
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
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}
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/*
******************************************************************************
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* Function Name : Enter_LowPowerMode
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* Description : Power-off system clocks and power while entering suspend mode
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* Input : None.
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* Return : None.
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******************************************************************************
*/
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void
Enter_LowPowerMode(
void
)
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{
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/*
Set the device state to suspend
*/
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bDeviceState =
SUSPENDED;
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}
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