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 && !(Endpoint_IsOUTReceived()))
  10         {
  11                 while (!(Endpoint_IsINReady()));
  12
  13                 while (Length && (Endpoint_BytesInEndpoint() < USB_ControlEndpointSize))
  14                 {
  15                         TEMPLATE_TRANSFER_BYTE(DataStream);
  16                         Length--;
  17                 }
  18
  19                 LastPacketFull = (Endpoint_BytesInEndpoint() == USB_ControlEndpointSize);
  20                 Endpoint_ClearIN();
  21         }
  22
  23         if (Endpoint_IsOUTReceived())
  24           return ENDPOINT_RWCSTREAM_HostAborted;
  25
  26         if (LastPacketFull)
  27         {
  28                 while (!(Endpoint_IsINReady()));
  29                 Endpoint_ClearIN();
  30         }
  31
  32         while (!(Endpoint_IsOUTReceived()));
  33
  34         return ENDPOINT_RWCSTREAM_NoError;
  35 }
  36
  37 #undef TEMPLATE_BUFFER_OFFSET
  38 #undef TEMPLATE_FUNC_NAME
  39 #undef TEMPLATE_TRANSFER_BYTE