uint16_t stm32_usbd_ep_get_OUT_count(uint8_t idx) { int8_t index; index = stm32_usbd_ep(idx); if (index < 0) { return 0; } idx = (uint8_t)index; if (stm32_usbd_OUT_dbuffer[idx]) { if(GetENDPOINT(idx) & EP_DTOG_TX) { return GetEPDblBuf1Count(idx); } else { return GetEPDblBuf0Count(idx); } } else { return GetEPRxCount(idx); } }
/******************************************************************************* * Function Name : EP1_OUT_Callback * Description : Endpoint 1 out callback routine. * Input : None. * Output : None. * Return : None. *******************************************************************************/ void EP1_OUT_Callback(void) { uint16_t Data_Len; /* data length*/ if (GetENDPOINT(ENDP1) & EP_DTOG_TX) { /*read from ENDP1_BUF0Addr buffer*/ Data_Len = GetEPDblBuf0Count(ENDP1); PMAToUserBufferCopy(Stream_Buff, ENDP1_BUF0Addr, Data_Len); } else { /*read from ENDP1_BUF1Addr buffer*/ Data_Len = GetEPDblBuf1Count(ENDP1); PMAToUserBufferCopy(Stream_Buff, ENDP1_BUF1Addr, Data_Len); } FreeUserBuffer(ENDP1, EP_DBUF_OUT); In_Data_Offset += Data_Len; }
/** * @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(...) */ }