/** * @brief Receive an amount of data * @param hpcd: PCD handle * @param ep_addr: endpoint address * @param pBuf: pointer to the reception buffer * @param len: amount of data to be received * @retval HAL status */ HAL_StatusTypeDef HAL_PCD_EP_Receive(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint8_t *pBuf, uint32_t len) { PCD_EPTypeDef *ep; ep = &hpcd->OUT_ep[ep_addr & 0x7F]; /*setup and start the Xfer */ ep->xfer_buff = pBuf; ep->xfer_len = len; ep->xfer_count = 0; ep->is_in = 0; ep->num = ep_addr & 0x7F; __HAL_LOCK(hpcd); /* Multi packet transfer*/ if (ep->xfer_len > ep->maxpacket) { len=ep->maxpacket; ep->xfer_len-=len; } else { len=ep->xfer_len; ep->xfer_len =0; } /* configure and validate Rx endpoint */ if (ep->doublebuffer == 0) { /*Set RX buffer count*/ PCD_SET_EP_RX_CNT(hpcd->Instance, ep->num, len); } else { /*Set the Double buffer counter*/ PCD_SET_EP_DBUF_CNT(hpcd->Instance, ep->num, ep->is_in, len); } PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_VALID); __HAL_UNLOCK(hpcd); return HAL_OK; }
/** * @brief This function handles PCD Endpoint interrupt request. * @param hpcd: PCD handle * @retval HAL status */ static HAL_StatusTypeDef PCD_EP_ISR_Handler(PCD_HandleTypeDef *hpcd) { PCD_EPTypeDef *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 = hpcd->Instance->ISTR) & USB_ISTR_CTR) != 0) { /* extract highest priority endpoint number */ EPindex = (uint8_t)(wIstr & USB_ISTR_EP_ID); if (EPindex == 0) { /* Decode and service control endpoint interrupt */ /* DIR bit = origin of the interrupt */ if ((wIstr & USB_ISTR_DIR) == 0) { /* DIR = 0 */ /* DIR = 0 => IN int */ /* DIR = 0 implies that (EP_CTR_TX = 1) always */ PCD_CLEAR_TX_EP_CTR(hpcd->Instance, PCD_ENDP0); ep = &hpcd->IN_ep[0]; ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num); ep->xfer_buff += ep->xfer_count; /* TX COMPLETE */ HAL_PCD_DataInStageCallback(hpcd, 0); if((hpcd->USB_Address > 0)&& ( ep->xfer_len == 0)) { hpcd->Instance->DADDR = (hpcd->USB_Address | USB_DADDR_EF); hpcd->USB_Address = 0; } } else { /* DIR = 1 */ /* DIR = 1 & CTR_RX => SETUP or OUT int */ /* DIR = 1 & (CTR_TX | CTR_RX) => 2 int pending */ ep = &hpcd->OUT_ep[0]; wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, PCD_ENDP0); if ((wEPVal & USB_EP_SETUP) != 0) { /* Get SETUP Packet*/ ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num); PCD_ReadPMA(hpcd->Instance, (uint8_t*)hpcd->Setup ,ep->pmaadress , ep->xfer_count); /* SETUP bit kept frozen while CTR_RX = 1*/ PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0); /* Process SETUP Packet*/ HAL_PCD_SetupStageCallback(hpcd); } else if ((wEPVal & USB_EP_CTR_RX) != 0) { PCD_CLEAR_RX_EP_CTR(hpcd->Instance, PCD_ENDP0); /* Get Control Data OUT Packet*/ ep->xfer_count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num); if (ep->xfer_count != 0) { PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count); ep->xfer_buff+=ep->xfer_count; } /* Process Control Data OUT Packet*/ HAL_PCD_DataOutStageCallback(hpcd, 0); PCD_SET_EP_RX_CNT(hpcd->Instance, PCD_ENDP0, ep->maxpacket); PCD_SET_EP_RX_STATUS(hpcd->Instance, PCD_ENDP0, USB_EP_RX_VALID); } } } else { /* Decode and service non control endpoints interrupt */ /* process related endpoint register */ wEPVal = PCD_GET_ENDPOINT(hpcd->Instance, EPindex); if ((wEPVal & USB_EP_CTR_RX) != 0) { /* clear int flag */ PCD_CLEAR_RX_EP_CTR(hpcd->Instance, EPindex); ep = &hpcd->OUT_ep[EPindex]; /* OUT double Buffering*/ if (ep->doublebuffer == 0) { count = PCD_GET_EP_RX_CNT(hpcd->Instance, ep->num); if (count != 0) { PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, count); } } else { if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_RX) { /*read from endpoint BUF0Addr buffer*/ count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num); if (count != 0) { PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, count); } } else { /*read from endpoint BUF1Addr buffer*/ count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num); if (count != 0) { PCD_ReadPMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, count); } } PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_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 */ HAL_PCD_DataOutStageCallback(hpcd, ep->num); } else { HAL_PCD_EP_Receive(hpcd, ep->num, ep->xfer_buff, ep->xfer_len); } } /* if((wEPVal & EP_CTR_RX) */ if ((wEPVal & USB_EP_CTR_TX) != 0) { ep = &hpcd->IN_ep[EPindex]; /* clear int flag */ PCD_CLEAR_TX_EP_CTR(hpcd->Instance, EPindex); /* IN double Buffering*/ if (ep->doublebuffer == 0) { ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num); if (ep->xfer_count != 0) { PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaadress, ep->xfer_count); } } else { if (PCD_GET_ENDPOINT(hpcd->Instance, ep->num) & USB_EP_DTOG_TX) { /*read from endpoint BUF0Addr buffer*/ ep->xfer_count = PCD_GET_EP_DBUF0_CNT(hpcd->Instance, ep->num); if (ep->xfer_count != 0) { PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr0, ep->xfer_count); } } else { /*read from endpoint BUF1Addr buffer*/ ep->xfer_count = PCD_GET_EP_DBUF1_CNT(hpcd->Instance, ep->num); if (ep->xfer_count != 0) { PCD_WritePMA(hpcd->Instance, ep->xfer_buff, ep->pmaaddr1, ep->xfer_count); } } PCD_FreeUserBuffer(hpcd->Instance, ep->num, PCD_EP_DBUF_IN); } /*multi-packet on the NON control IN endpoint*/ ep->xfer_count = PCD_GET_EP_TX_CNT(hpcd->Instance, ep->num); ep->xfer_buff+=ep->xfer_count; /* Zero Length Packet? */ if (ep->xfer_len == 0) { /* TX COMPLETE */ HAL_PCD_DataInStageCallback(hpcd, ep->num); } else { HAL_PCD_EP_Transmit(hpcd, ep->num, ep->xfer_buff, ep->xfer_len); } } } } return HAL_OK; }
/** * @brief Open and configure an endpoint * @param hpcd: PCD handle * @param ep_addr: endpoint address * @param ep_mps: endpoint max packert size * @param ep_type: endpoint type * @retval HAL status */ HAL_StatusTypeDef HAL_PCD_EP_Open(PCD_HandleTypeDef *hpcd, uint8_t ep_addr, uint16_t ep_mps, uint8_t ep_type) { HAL_StatusTypeDef ret = HAL_OK; PCD_EPTypeDef *ep; if ((ep_addr & 0x80) == 0x80) { ep = &hpcd->IN_ep[ep_addr & 0x7F]; } else { ep = &hpcd->OUT_ep[ep_addr & 0x7F]; } ep->num = ep_addr & 0x7F; ep->is_in = (0x80 & ep_addr) != 0; ep->maxpacket = ep_mps; ep->type = ep_type; __HAL_LOCK(hpcd); /* initialize Endpoint */ switch (ep->type) { case PCD_EP_TYPE_CTRL: PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_CONTROL); break; case PCD_EP_TYPE_BULK: PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_BULK); break; case PCD_EP_TYPE_INTR: PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_INTERRUPT); break; case PCD_EP_TYPE_ISOC: PCD_SET_EPTYPE(hpcd->Instance, ep->num, USB_EP_ISOCHRONOUS); break; } PCD_SET_EP_ADDRESS(hpcd->Instance, ep->num, ep->num); if (ep->doublebuffer == 0) { if (ep->is_in) { /*Set the endpoint Transmit buffer address */ PCD_SET_EP_TX_ADDRESS(hpcd->Instance, ep->num, ep->pmaadress); PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num); /* Configure NAK status for the Endpoint*/ PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_NAK); } else { /*Set the endpoint Receive buffer address */ PCD_SET_EP_RX_ADDRESS(hpcd->Instance, ep->num, ep->pmaadress); /*Set the endpoint Receive buffer counter*/ PCD_SET_EP_RX_CNT(hpcd->Instance, ep->num, ep->maxpacket); PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num); /* Configure VALID status for the Endpoint*/ PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_VALID); } } /*Double Buffer*/ else { /*Set the endpoint as double buffered*/ PCD_SET_EP_DBUF(hpcd->Instance, ep->num); /*Set buffer address for double buffered mode*/ PCD_SET_EP_DBUF_ADDR(hpcd->Instance, ep->num,ep->pmaaddr0, ep->pmaaddr1); if (ep->is_in==0) { /* Clear the data toggle bits for the endpoint IN/OUT*/ PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num); PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num); /* Reset value of the data toggle bits for the endpoint out*/ PCD_TX_DTOG(hpcd->Instance, ep->num); PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_VALID); PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS); } else { /* Clear the data toggle bits for the endpoint IN/OUT*/ PCD_CLEAR_RX_DTOG(hpcd->Instance, ep->num); PCD_CLEAR_TX_DTOG(hpcd->Instance, ep->num); PCD_RX_DTOG(hpcd->Instance, ep->num); /* Configure DISABLE status for the Endpoint*/ PCD_SET_EP_TX_STATUS(hpcd->Instance, ep->num, USB_EP_TX_DIS); PCD_SET_EP_RX_STATUS(hpcd->Instance, ep->num, USB_EP_RX_DIS); } } __HAL_UNLOCK(hpcd); return ret; }