usbcore.c

nxp的LPC2888处理器的示例代码.

                    EP0Data.pData = EP0Buf;
                    goto class_ok;
                  case HID_REQUEST_GET_IDLE:
                    if (HID_GetIdle()) {
                      EP0Data.pData = EP0Buf;
                      USB_DataInStage();
                      goto class_ok;
                    }
                    break;
                  case HID_REQUEST_SET_IDLE:
                    if (HID_SetIdle()) {
                      USB_StatusInStage();
                      goto class_ok;
                    }
                    break;
                  case HID_REQUEST_GET_PROTOCOL:
                    if (HID_GetProtocol()) {
                      EP0Data.pData = EP0Buf;
                      USB_DataInStage();
                      goto class_ok;
                    }
                    break;
                  case HID_REQUEST_SET_PROTOCOL:
                    if (HID_SetProtocol()) {
                      USB_StatusInStage();
                      goto class_ok;
                    }
                    break;
                }
              }
#endif  /* USB_HID */
#if USB_MSC
              if (SetupPacket.wIndex.WB.L == USB_MSC_IF_NUM) {
                switch (SetupPacket.bRequest) {
                  case MSC_REQUEST_RESET:
                    if (MSC_Reset()) {
                      USB_StatusInStage();
                      goto class_ok;
                    }
                    break;
                  case MSC_REQUEST_GET_MAX_LUN:
                    if (MSC_GetMaxLUN()) {
                      EP0Data.pData = EP0Buf;
                      USB_DataInStage();
                      goto class_ok;
                    }
                    break;
                }
              }
#endif  /* USB_MSC */
#if USB_AUDIO
              if ((SetupPacket.wIndex.WB.L == USB_ADC_CIF_NUM)  ||
                  (SetupPacket.wIndex.WB.L == USB_ADC_SIF1_NUM) ||
                  (SetupPacket.wIndex.WB.L == USB_ADC_SIF2_NUM)) {
                if (SetupPacket.bmRequestType.BM.Dir) {
                  if (ADC_IF_GetRequest()) {
                    EP0Data.pData = EP0Buf;
                    USB_DataInStage();
                    goto class_ok;
                  }
                } else {
                  EP0Data.pData = EP0Buf;
                  goto class_ok;
                }
              }
#endif  /* USB_AUDIO */
#if USB_CDC
              if ((SetupPacket.wIndex.WB.L == USB_CDC_CIF_NUM)  ||
                  (SetupPacket.wIndex.WB.L == USB_CDC_DIF_NUM)) {
                switch (SetupPacket.bRequest) {
                  case CDC_SEND_ENCAPSULATED_COMMAND:
                    EP0Data.pData = EP0Buf;      /* data to be stored, see USB_EVT_OUT */
                    goto class_ok;
                    break;
                  case CDC_GET_ENCAPSULATED_RESPONSE:
                    if (CDC_GetEncapsulatedResponse()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case CDC_SET_COMM_FEATURE:
                    EP0Data.pData = EP0Buf;      /* data to be stored, see USB_EVT_OUT */
                    goto class_ok;
                    break;
                  case CDC_GET_COMM_FEATURE:
                    if (CDC_GetCommFeature(SetupPacket.wValue.W)) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case CDC_CLEAR_COMM_FEATURE:
                    if (CDC_ClearCommFeature(SetupPacket.wValue.W)) {
                      USB_StatusInStage();       /* send Acknowledge */
                      goto class_ok;
                    }
                    break;
                  case CDC_SET_LINE_CODING:
                    EP0Data.pData = EP0Buf;      /* data to be stored, see USB_EVT_OUT */
                    goto class_ok;
                    break;
                  case CDC_GET_LINE_CODING:
                    if (CDC_GetLineCoding()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case CDC_SET_CONTROL_LINE_STATE:
                    if (CDC_SetControlLineState(SetupPacket.wValue.W)) {
                      USB_StatusInStage();       /* send Acknowledge */
                      goto class_ok;
                    }
                    break;
                  case CDC_SEND_BREAK:
                    if (CDC_SendBreak(SetupPacket.wValue.W)) {
                      USB_StatusInStage();       /* send Acknowledge */
                      goto class_ok;
                    }
                    break;
                }
              }
#endif  /* USB_CDC */
#if USB_UVC
              if ((SetupPacket.wIndex.WB.L == USB_UVC_VCIF_NUM)  ||
                  (SetupPacket.wIndex.WB.L == USB_UVC_VSIF_NUM)) {
                switch (SetupPacket.bRequest) {
                  case SET_CUR:
                    EP0Data.pData = EP0Buf;      /* data to be stored, see USB_EVT_OUT */
                    USB_DataOutStage();
                    goto class_ok;
                    break;
                  case GET_CUR:
                    if (UVC_GetCur()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_MIN:
                    if (UVC_GetMin()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_MAX:
                    if (UVC_GetMax()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_RES:
                    if (UVC_GetRes()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_LEN:
                    if (UVC_GetLen()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_INFO:
                    if (UVC_GetInfo()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                  case GET_DEF:
                    if (UVC_GetDef()) {
                      EP0Data.pData = EP0Buf;    /* data to be sent */
                      USB_DataInStage();         /* send data */
                      goto class_ok;
                    }
                    break;
                }
              }
#endif  /* USB_UVC */
              goto stall_i;
#if USB_AUDIO
            case REQUEST_TO_ENDPOINT:
              if (SetupPacket.bmRequestType.BM.Dir) {
                if (ADC_EP_GetRequest()) {
                  EP0Data.pData = EP0Buf;
                  USB_DataInStage();
                  goto class_ok;
                }
              } else {
                EP0Data.pData = EP0Buf;
                goto class_ok;
              }
              goto stall_i;
#endif  /* USB_AUDIO */
            default:
              goto stall_i;
          }
class_ok: break;
#else
          goto stall_i;
#endif  /* USB_CLASS */

        case REQUEST_VENDOR:
          goto stall_i;

        default:
stall_i:  USB_SetStallEP(0x80);
          EP0Data.Count = 0;
          break;

      }
      break;

    case USB_EVT_OUT:
      if (SetupPacket.bmRequestType.BM.Dir == 0) {
        if (EP0Data.Count) {
          USB_DataOutStage();                    /* receive data */
          if (EP0Data.Count == 0) {
            USB_StatusInStage();                 /* send Acknowledge */
            switch (SetupPacket.bmRequestType.BM.Type) {
              case REQUEST_STANDARD:
                goto stall_i;
#if (USB_CLASS)
              case REQUEST_CLASS:
                switch (SetupPacket.bmRequestType.BM.Recipient) {
                  case REQUEST_TO_INTERFACE:
#if USB_HID
                    if (SetupPacket.wIndex.WB.L == USB_HID_IF_NUM) {
                      if (!HID_SetReport()) {
                        goto stall_i;
                      }
                      break;
                    }
#endif /* USB_HID */  
#if USB_AUDIO
                    if ((SetupPacket.wIndex.WB.L == USB_ADC_CIF_NUM)  ||
                        (SetupPacket.wIndex.WB.L == USB_ADC_SIF1_NUM) ||
                        (SetupPacket.wIndex.WB.L == USB_ADC_SIF2_NUM)) {
                      if (!ADC_IF_SetRequest()) {
                        goto stall_i;
                      }
                      break;
                    }
#endif /* USB_AUDIO */
#if USB_CDC
                    if ((SetupPacket.wIndex.WB.L == USB_CDC_CIF_NUM)  ||
                        (SetupPacket.wIndex.WB.L == USB_CDC_DIF_NUM)) {
                      switch (SetupPacket.bRequest) {
                        case CDC_SEND_ENCAPSULATED_COMMAND:
                          if (!CDC_SendEncapsulatedCommand()) {
                            goto stall_i;
                          }
                          break;
                        case CDC_SET_COMM_FEATURE:
                          if (!CDC_SetCommFeature(SetupPacket.wValue.W)) {
                            goto stall_i;
                          }
                          break;
                        case CDC_SET_LINE_CODING:
                          if (!CDC_SetLineCoding()) {
                            goto stall_i;
                          }
                          break;
                      } /* end switch (SetupPacket.bRequest) */ 
                      break;
                    }
#endif /* USB_CDC */
#if USB_UVC
                    if ((SetupPacket.wIndex.WB.L == USB_UVC_VCIF_NUM)  ||
                        (SetupPacket.wIndex.WB.L == USB_UVC_VSIF_NUM)) {
                      switch (SetupPacket.bRequest) {
                        case SET_CUR:
                          if (!UVC_SetCur()) {
                            goto stall_i;
                          }
                          break;
                      } /* end switch (SetupPacket.bRequest) */ 
                      break;
                    }
#endif /* USB_UVC */
                    goto stall_i;
                  case REQUEST_TO_ENDPOINT:
#if USB_AUDIO
                    if (ADC_EP_SetRequest()) break;
#endif /* USB_AUDIO */
                    goto stall_i;
                  default:
                    goto stall_i;
                }
                break;
#endif /* USB_CLASS */
              default:
                goto stall_i;
            }
//            USB_StatusInStage();                 /* send Acknowledge */
		  }
		}
	  }
      break;

    case USB_EVT_IN:
      if (SetupPacket.bmRequestType.BM.Dir == 1) {
	    if ( EP0Data.Count ) {
		  USB_DataInStage();
	    }
	    else {
		  USB_StatusOutStage();
	    }
	  }
      break;

    case USB_EVT_IN_STALL:
      USB_ClrStallEP(0x80);
      break;

    case USB_EVT_OUT_STALL:
      USB_ClrStallEP(0x00);
      break;
  }
}