void CTR_HP(void)
{
uint8_t EPindex;
int8_t epaddr;
uint16_t wIstr;
uint32_t wEPVal = 0;
while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)
{
_SetISTR((uint16_t)CLR_CTR);
EPindex = (uint8_t)(wIstr & ISTR_EP_ID);
epaddr = stm32_usbd_epaddr[EPindex];
wEPVal = _GetENDPOINT(EPindex);
if ((wEPVal & EP_CTR_RX) != 0)
{
_ClearEP_CTR_RX(EPindex);
if ((stm32_usbd_callback.on_out != NULL) && (epaddr >= 0))
{
stm32_usbd_callback.on_out(stm32_usbd_callback.param, epaddr);
}
}
else if ((wEPVal & EP_CTR_TX) != 0)
{
_ClearEP_CTR_TX(EPindex);
if ((stm32_usbd_callback.on_in != NULL) && (epaddr >= 0))
{
stm32_usbd_callback.on_in(stm32_usbd_callback.param, epaddr);
}
}
}
}
/*******************************************************************************
* Function Name : CTR_HP.
* Description : High Priority Endpoint Correct Transfer interrupt's service
* routine.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void CTR_HP(void)
{
uint32_t wEPVal = 0;
while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)
{
_SetISTR((uint16_t)CLR_CTR); /* clear CTR flag */
/* extract highest priority endpoint number */
EPindex = (uint8_t)(wIstr & ISTR_EP_ID);
/* process related endpoint register */
wEPVal = _GetENDPOINT(EPindex);
if ((wEPVal & EP_CTR_RX) != 0)
{
/* clear int flag */
_ClearEP_CTR_RX(EPindex);
/* call OUT service function */
(*pEpInt_OUT[EPindex-1])();
} /* if((wEPVal & EP_CTR_RX) */
else if ((wEPVal & EP_CTR_TX) != 0)
{
/* clear int flag */
_ClearEP_CTR_TX(EPindex);
/* call IN service function */
(*pEpInt_IN[EPindex-1])();
} /* if((wEPVal & EP_CTR_TX) != 0) */
}/* while(...) */
}
/*******************************************************************************
* Function Name : CTR_HP.
* Description : High Priority Endpoint Correct Transfer interrupt's service
* routine.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void CTR_HP(void)
{
u32 wEPVal = 0;
while (((wIstr = ((u16) *(volatile unsigned *)(0x40005C44L))) & ISTR_CTR) != 0)
{
_SetISTR((u16)CLR_CTR); /* clear CTR flag */
/* extract highest priority endpoint number */
EPindex = (u8)(wIstr & ISTR_EP_ID);
/* process related endpoint register */
wEPVal =(u16)(*((volatile unsigned *)(0x40005C00L) + EPindex));
if ((wEPVal & EP_CTR_RX) != 0)
{
/* clear int flag */
_ClearEP_CTR_RX(EPindex);
/* call OUT service function */
(*pEpInt_OUT[EPindex-1])();
} /* if((wEPVal & EP_CTR_RX) */
else if ((wEPVal & EP_CTR_TX) != 0)
{
/* clear int flag */
_ClearEP_CTR_TX(EPindex);
/* call IN service function */
// (*pEpInt_IN[EPindex-1])();
} /* if((wEPVal & EP_CTR_TX) != 0) */
}/* while(...) */
}
void USBglobalInterruptHandler() {
uint16_t pending;
pending = _GetCNTR() & _GetISTR();
if (pending & ISTR_CTR) {
uint16_t EPindex, EPflags, EPnum;
EPindex = _GetISTR() & ISTR_EP_ID;
EPflags = _GetENDPOINT(EPindex);
EPnum = EPflags & EPADDR_FIELD;
/* The EP_SETUP bit implies the EP_CTR_RX bit. */
if (EPflags & EP_SETUP) {
_ClearEP_CTR_RX(EPindex);
USBDtransfer(EPnum, PID_SETUP);
}
else if (EPflags & EP_CTR_RX) {
_ClearEP_CTR_RX(EPindex);
USBDtransfer(EPnum, PID_OUT);
}
else if (EPflags & EP_CTR_TX) {
_ClearEP_CTR_TX(EPindex);
if (EPnum != 0)
USBDcontinueInTransfer(EPnum);
USBDtransfer(EPnum, PID_IN);
}
}
if (pending & ISTR_DOVR) {
_SetISTR(CLR_DOVR);
}
if (pending & ISTR_ERR) {
_SetISTR(CLR_ERR);
}
if (pending & ISTR_SUSP) {
USBDsuspend();
PWRreduce();
/* The ISTR_SUSP bit must be cleared after
setting of the CNTR_FSUSP bit. */
_SetISTR(CLR_SUSP);
}
if (pending & ISTR_WKUP) {
_SetISTR(CLR_WKUP);
PWRresume();
USBDwakeup();
}
if (pending & ISTR_RESET) {
_SetISTR(CLR_RESET);
USBDreset(FULL_SPEED);
}
if (pending & ISTR_SOF) {
_SetISTR(CLR_SOF);
USBDsof(_GetFNR() & FNR_FN);
}
if (pending & ISTR_ESOF) {
_SetISTR(CLR_ESOF);
}
}
/*******************************************************************************
* Function Name : CTR_LP.
* Description : Low priority Endpoint Correct Transfer interrupt's service
* routine.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void CTR_LP(void)
{
volatile uint16_t wEPVal = 0;
/* stay in loop while pending interrupts */
while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)
{
/* extract highest priority endpoint number */
EPindex = (uint8_t)(wIstr & ISTR_EP_ID);
if (EPindex == 0)
{
/* Decode and service control endpoint interrupt */
/* calling related service routine */
/* (Setup0_Process, In0_Process, Out0_Process) */
/* save RX & TX status */
/* and set both to NAK */
SaveRState = _GetENDPOINT(ENDP0);
SaveTState = SaveRState & EPTX_STAT;
SaveRState &= EPRX_STAT;
_SetEPRxTxStatus(ENDP0,EP_RX_NAK,EP_TX_NAK);
/* DIR bit = origin of the interrupt */
if ((wIstr & ISTR_DIR) == 0)
{
/* DIR = 0 */
/* DIR = 0 => IN int */
/* DIR = 0 implies that (EP_CTR_TX = 1) always */
_ClearEP_CTR_TX(ENDP0);
In0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxTxStatus(ENDP0,SaveRState,SaveTState);
return;
}
else
{
/* DIR = 1 */
/* DIR = 1 & CTR_RX => SETUP or OUT int */
/* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */
wEPVal = _GetENDPOINT(ENDP0);
if ((wEPVal &EP_SETUP) != 0)
{
_ClearEP_CTR_RX(ENDP0); /* SETUP bit kept frozen while CTR_RX = 1 */
Setup0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxTxStatus(ENDP0,SaveRState,SaveTState);
return;
}
else if ((wEPVal & EP_CTR_RX) != 0)
{
_ClearEP_CTR_RX(ENDP0);
Out0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxTxStatus(ENDP0,SaveRState,SaveTState);
return;
}
}
}/* if(EPindex == 0) */
else
{
/* Decode and service non control endpoints interrupt */
/* process related endpoint register */
wEPVal = _GetENDPOINT(EPindex);
if ((wEPVal & EP_CTR_RX) != 0)
{
/* clear int flag */
_ClearEP_CTR_RX(EPindex);
/* call OUT service function */
(*pEpInt_OUT[EPindex-1])();
} /* if((wEPVal & EP_CTR_RX) */
if ((wEPVal & EP_CTR_TX) != 0)
{
/* clear int flag */
_ClearEP_CTR_TX(EPindex);
/* call IN service function */
(*pEpInt_IN[EPindex-1])();
} /* if((wEPVal & EP_CTR_TX) != 0) */
}/* if(EPindex == 0) else */
}/* while(...) */
}
void CTR_LP(void)
{
uint8_t EPindex;
int8_t epaddr;
uint16_t wIstr;
volatile uint16_t wEPVal = 0;
while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)
{
EPindex = (uint8_t)(wIstr & ISTR_EP_ID);
epaddr = stm32_usbd_epaddr[EPindex];
if (epaddr == 0)
{
if ((wIstr & ISTR_DIR) == 0)
{
_ClearEP_CTR_TX(ENDP0);
if (stm32_usbd_callback.on_in != NULL)
{
stm32_usbd_callback.on_in(stm32_usbd_callback.param,
epaddr);
}
return;
}
else
{
wEPVal = _GetENDPOINT(ENDP0);
_ClearEP_CTR_RX(ENDP0);
if ((wEPVal & EP_SETUP) != 0)
{
if (stm32_usbd_callback.on_setup != NULL)
{
stm32_usbd_callback.on_setup(stm32_usbd_callback.param);
}
}
else if ((wEPVal & EP_CTR_RX) != 0)
{
if (stm32_usbd_callback.on_out != NULL)
{
stm32_usbd_callback.on_out(stm32_usbd_callback.param,
epaddr);
}
}
return;
}
}
else
{
wEPVal = _GetENDPOINT(EPindex);
if ((wEPVal & EP_CTR_RX) != 0)
{
_ClearEP_CTR_RX(EPindex);
if ((stm32_usbd_callback.on_out != NULL) && (epaddr >= 0))
{
stm32_usbd_callback.on_out(stm32_usbd_callback.param,
epaddr);
}
}
if ((wEPVal & EP_CTR_TX) != 0)
{
_ClearEP_CTR_TX(EPindex);
if ((stm32_usbd_callback.on_in != NULL) && (epaddr >= 0))
{
stm32_usbd_callback.on_in(stm32_usbd_callback.param,
epaddr);
}
}
}
}
}
/**
* @brief Correct Transfer interrupt's service
* @param None
* @retval None
*/
void CTR(void)
{
USB_EP *ep;
uint16_t count=0;
uint8_t EPindex;
__IO uint16_t wIstr;
__IO uint16_t wEPVal = 0;
/* stay in loop while pending interrupts */
while (((wIstr = _GetISTR()) & ISTR_CTR) != 0)
{
/* extract highest priority endpoint number */
EPindex = (uint8_t)(wIstr & ISTR_EP_ID);
if (EPindex == 0)
{
/* Decode and service control endpoint interrupt */
/* DIR bit = origin of the interrupt */
if ((wIstr & ISTR_DIR) == 0)
{
/* DIR = 0 */
/* DIR = 0 => IN int */
/* DIR = 0 implies that (EP_CTR_TX = 1) always */
_ClearEP_CTR_TX(ENDP0);
ep = &((&USB_Device_dev)->dev.in_ep[0]);
ep->xfer_count = GetEPTxCount(ep->num);
ep->xfer_buff += ep->xfer_count;
/* TX COMPLETE */
USBD_DCD_INT_fops->DataInStage(&USB_Device_dev, 0x00);
}
else
{
/* DIR = 1 */
/* DIR = 1 & CTR_RX => SETUP or OUT int */
/* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */
ep = &((&USB_Device_dev)->dev.out_ep[0]);
wEPVal = _GetENDPOINT(ENDP0);
if ((wEPVal &EP_SETUP) != 0)
{
/* Get SETUP Packet*/
ep->xfer_count = GetEPRxCount(ep->num);
PMAToUserBufferCopy(&((&USB_Device_dev)->dev.setup_packet[0]),ep->pmaadress , ep->xfer_count);
/* SETUP bit kept frozen while CTR_RX = 1*/
_ClearEP_CTR_RX(ENDP0);
/* Process SETUP Packet*/
USBD_DCD_INT_fops->SetupStage(&USB_Device_dev);
}
else if ((wEPVal & EP_CTR_RX) != 0)
{
_ClearEP_CTR_RX(ENDP0);
/* Get Control Data OUT Packet*/
ep->xfer_count = GetEPRxCount(ep->num);
if (ep->xfer_count != 0)
{
PMAToUserBufferCopy(ep->xfer_buff, ep->pmaadress, ep->xfer_count);
ep->xfer_buff+=ep->xfer_count;
}
/* Process Control Data OUT Packet*/
USBD_DCD_INT_fops->DataOutStage(&USB_Device_dev, 0x00);
_SetEPRxCount(ENDP0, ep->maxpacket);
_SetEPRxStatus(ENDP0,EP_RX_VALID);
}
}
}/* if(EPindex == 0) */
else
{
/* Decode and service non control endpoints interrupt */
/* process related endpoint register */
wEPVal = _GetENDPOINT(EPindex);
if ((wEPVal & EP_CTR_RX) != 0)
{
/* clear int flag */
_ClearEP_CTR_RX(EPindex);
ep = &((&USB_Device_dev)->dev.out_ep[EPindex]);
/* OUT double Buffering*/
if (ep->doublebuffer == 0)
{
count = GetEPRxCount(ep->num);
if (count != 0)
{
PMAToUserBufferCopy(ep->xfer_buff, ep->pmaadress, count);
}
}
else
{
if (GetENDPOINT(ep->num) & EP_DTOG_RX)
{
/*read from endpoint BUF0Addr buffer*/
count = GetEPDblBuf0Count(ep->num);
if (count != 0)
{
PMAToUserBufferCopy(ep->xfer_buff, ep->pmaaddr0, count);
}
}
else
{
/*read from endpoint BUF1Addr buffer*/
count = GetEPDblBuf1Count(ep->num);
if (count != 0)
{
PMAToUserBufferCopy(ep->xfer_buff, ep->pmaaddr1, count);
}
}
FreeUserBuffer(ep->num, EP_DBUF_OUT);
}
/*multi-packet on the NON control OUT endpoint*/
ep->xfer_count+=count;
ep->xfer_buff+=count;
if ((ep->xfer_len == 0) || (count < ep->maxpacket))
{
/* RX COMPLETE */
USBD_DCD_INT_fops->DataOutStage(&USB_Device_dev, ep->num);
}
else
{
DCD_EP_PrepareRx (&USB_Device_dev,ep->num, ep->xfer_buff, ep->xfer_len);
}
} /* if((wEPVal & EP_CTR_RX) */
if ((wEPVal & EP_CTR_TX) != 0)
{
ep = &((&USB_Device_dev)->dev.in_ep[EPindex]);
/* clear int flag */
_ClearEP_CTR_TX(EPindex);
/* IN double Buffering*/
if (ep->doublebuffer == 0)
{
ep->xfer_count = GetEPTxCount(ep->num);
if (ep->xfer_count != 0)
{
UserToPMABufferCopy(ep->xfer_buff, ep->pmaadress, ep->xfer_count);
}
}
else
{
if (GetENDPOINT(ep->num) & EP_DTOG_TX)
{
/*read from endpoint BUF0Addr buffer*/
ep->xfer_count = GetEPDblBuf0Count(ep->num);
if (ep->xfer_count != 0)
{
UserToPMABufferCopy(ep->xfer_buff, ep->pmaaddr0, ep->xfer_count);
}
}
else
{
/*read from endpoint BUF1Addr buffer*/
ep->xfer_count = GetEPDblBuf1Count(ep->num);
if (ep->xfer_count != 0)
{
UserToPMABufferCopy(ep->xfer_buff, ep->pmaaddr1, ep->xfer_count);
}
}
FreeUserBuffer(ep->num, EP_DBUF_IN);
}
/*multi-packet on the NON control IN endpoint*/
ep->xfer_count =GetEPTxCount(ep->num);
ep->xfer_buff+=ep->xfer_count;
/* Zero Length Packet? */
if (ep->xfer_len == 0)
{
/* TX COMPLETE */
USBD_DCD_INT_fops->DataInStage(&USB_Device_dev, ep->num);
}
else
{
DCD_EP_Tx (&USB_Device_dev,ep->num, ep->xfer_buff, ep->xfer_len);
}
} /* if((wEPVal & EP_CTR_TX) != 0) */
}/* if(EPindex == 0) else */
}/* while(...) */
}
/*******************************************************************************
* Function Name : CTR_LP.
* Description : Low priority Endpoint Correct Transfer interrupt's service
* routine.
* Input : None.
* Output : None.
* Return : None.
*******************************************************************************/
void CTR_LP(void)
{
u32 wEPVal = 0;
// wIstr = *ISTR;
/* stay in loop while pending ints */
while (((wIstr = (*ISTR)) & ISTR_CTR) != 0) //正确传输
{
_SetISTR((u16)CLR_CTR); /* clear CTR flag 清正确传输中断*/
/* extract highest priority endpoint number */
EPindex = (u8)(wIstr & ISTR_EP_ID);//ISTR_EP_ID (0x000F) 这个只读，所以与0X000F&
if (EPindex == 0) //如果是端点0
{
/* Decode and service control endpoint interrupt */
/* calling related service routine */
/* (Setup0_Process, In0_Process, Out0_Process) */
/* save RX & TX status */
/* and set both to NAK */
SaveRState = _GetEPRxStatus(ENDP0);
SaveTState = _GetEPTxStatus(ENDP0);
_SetEPRxStatus(ENDP0, EP_RX_NAK); //当一次正确的OUT或SETUP数据传输完成后(CTR_RX=1)，
_SetEPTxStatus(ENDP0, EP_TX_NAK); //硬件会自动设置此位为NAK状态，
//使应用程序有足够的时间在处理完当前传输的数据后，
//响应下一个数据分组。
/* DIR bit = origin of the interrupt */
if ((wIstr & ISTR_DIR) == 0) //0x0010 如果是输入
{
/* DIR = 0 */
/* DIR = 0 => IN int */
/* DIR = 0 implies that (EP_CTR_TX = 1) always */
_ClearEP_CTR_TX(ENDP0);
In0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxStatus(ENDP0, SaveRState);
_SetEPTxStatus(ENDP0, SaveTState);
return;
}
else //输出
{
/* DIR = 1 */
/* DIR = 1 & CTR_RX => SETUP or OUT int */
/* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */
//EP0的值
wEPVal =(u16)(*((volatile unsigned *)(0x40005C00L) + ENDP0));
if ((wEPVal & EP_CTR_TX) != 0) //硬件在一个正确的IN分组传输完成后置位
{
_ClearEP_CTR_TX(ENDP0);
In0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxStatus(ENDP0, SaveRState); //SaveTState=EP_TX_STALL; 在In0_Process（）
_SetEPTxStatus(ENDP0, SaveTState); //SaveTState=EP_TX_STALL; 在In0_Process（）
return;
}
//控制传输由3个阶段组成，首先是主机发送SETUP分组的SETUP阶段，
//然后是主机发送零个或多个数据的数据阶段，最后是状态阶段，由与数据阶段方向相反的数据分组构成
//据SETUP分组的相应字段决定后面的传输是IN还是OUT。
else if ((wEPVal &EP_SETUP) != 0) //在USB模块收到一个正确的SETUP分组后由硬件置位
{
_ClearEP_CTR_RX(ENDP0); /* SETUP bit kept frozen while CTR_RX = 1 */
Setup0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxStatus(ENDP0, SaveRState);
_SetEPTxStatus(ENDP0, SaveTState);
return;
}
else if ((wEPVal & EP_CTR_RX) != 0)
{
_ClearEP_CTR_RX(ENDP0);
Out0_Process();
/* before terminate set Tx & Rx status */
_SetEPRxStatus(ENDP0, SaveRState);
_SetEPTxStatus(ENDP0, SaveTState);
return;
}
}
}/* if(EPindex == 0) */
else
{
/* Decode and service non control endpoints interrupt */
/* process related endpoint register */
wEPVal = (u16)(*((volatile unsigned *)(0x40005C00L) + EPindex));
if ((wEPVal & EP_CTR_RX) != 0)
{
/* clear int flag */
_ClearEP_CTR_RX(EPindex);
/* call OUT service function */
(*pEpInt_OUT[EPindex-1])();
} /* if((wEPVal & EP_CTR_RX) */
if ((wEPVal & EP_CTR_TX) != 0)
{
/* clear int flag */
_ClearEP_CTR_TX(EPindex);
/* call IN service function */
// (*pEpInt_IN[EPindex-1])();
} /* if((wEPVal & EP_CTR_TX) != 0) */
}/* if(EPindex == 0) else */
}/* while(...) */
}