LUFA/Drivers/USB/LowLevel/Template/Template_Endpoint_Control_W.c

   1 uint8_t TEMPLATE_FUNC_NAME (void* Buffer, uint16_t Length)
   2 {
   3         uint8_t* DataStream     = (uint8_t*)(Buffer + TEMPLATE_BUFFER_OFFSET(Length));
   4         bool     LastPacketFull = false;
   5
   6         if (Length > USB_ControlRequest.wLength)
   7           Length = USB_ControlRequest.wLength;
   8
   9         while (Length || LastPacketFull)
  10         {
  11                 if (Endpoint_IsSETUPReceived())
  12                   return ENDPOINT_RWCSTREAM_HostAborted;
  13
  14                 if (Endpoint_IsOUTReceived())
  15                   break;
  16
  17                 if (USB_DeviceState == DEVICE_STATE_Unattached)
  18                   return ENDPOINT_RWCSTREAM_DeviceDisconnected;
  19
  20                 if (Endpoint_IsINReady())
  21                 {
  22                         while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
  23                         {
  24                                 TEMPLATE_TRANSFER_BYTE(DataStream);
  25                                 Length--;
  26                         }
  27
  28                         LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
  29                         Endpoint_ClearIN();
  30                 }
  31         }
  32
  33         while (!(Endpoint_IsOUTReceived()))
  34         {
  35                 if (USB_DeviceState == DEVICE_STATE_Unattached)
  36                   return ENDPOINT_RWCSTREAM_DeviceDisconnected;
  37         }
  38
  39         return ENDPOINT_RWCSTREAM_NoError;
  40 }
  41
  42 #undef TEMPLATE_BUFFER_OFFSET
  43 #undef TEMPLATE_FUNC_NAME
  44 #undef TEMPLATE_TRANSFER_BYTE