Make device mode configure the control endpoint even before the bus has been reset...

[pub/USBasp.git] / LUFA / Drivers / USB / Class / Host / CDC.c

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index 9521a85..b9e4c9e 100644 (file)
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -36,7 +36,8 @@
 #define  __INCLUDE_FROM_CDC_DRIVER
 #include "CDC.h"
 
-uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, uint16_t ConfigDescriptorSize,
+uint8_t CDC_Host_ConfigurePipes(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                                uint16_t ConfigDescriptorSize,
                                 void* ConfigDescriptorData)
 {
        uint8_t FoundEndpoints = 0;
@@ -204,7 +205,6 @@ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
          return;
        
        Pipe_SelectPipe(CDCInterfaceInfo->Config.NotificationPipeNumber);
-       Pipe_SetPipeToken(PIPE_TOKEN_IN);
        Pipe_Unfreeze();
 
        if (Pipe_IsINReceived())
@@ -219,14 +219,19 @@ void CDC_Host_USBTask(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
                                            sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
                                            NO_STREAM_CALLBACK);
                        
-               }
-
-               Pipe_ClearIN();
+                       Pipe_ClearIN();
 
-               EVENT_CDC_Host_ControLineStateChanged(CDCInterfaceInfo);
+                       EVENT_CDC_Host_ControLineStateChanged(CDCInterfaceInfo);
+               }
+               else
+               {
+                       Pipe_ClearIN();
+               }
        }
        
        Pipe_Freeze();
+
+       CDC_Host_Flush(CDCInterfaceInfo);
 }
 
 uint8_t CDC_Host_SetLineEncoding(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
@@ -261,7 +266,8 @@ uint8_t CDC_Host_SendControlLineStateChange(USB_ClassInfo_CDC_Host_t* const CDCI
        return USB_Host_SendControlRequest(NULL);
 }
 
-uint8_t CDC_Host_SendBreak(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, const uint8_t Duration)
+uint8_t CDC_Host_SendBreak(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                           const uint8_t Duration)
 {
        USB_ControlRequest = (USB_Request_Header_t)
        {
@@ -277,7 +283,9 @@ uint8_t CDC_Host_SendBreak(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, con
        return USB_Host_SendControlRequest(NULL);
 }
 
-uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, char* Data, const uint16_t Length)
+uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                            const char* const Data,
+                            const uint16_t Length)
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;
@@ -293,7 +301,8 @@ uint8_t CDC_Host_SendString(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, ch
        return ErrorCode;
 }
 
-uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, const uint8_t Data)
+uint8_t CDC_Host_SendByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                          const uint8_t Data)
 {
        if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
          return PIPE_READYWAIT_DeviceDisconnected;
@@ -323,7 +332,6 @@ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo
          return 0;
        
        Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
-       Pipe_SetPipeToken(PIPE_TOKEN_IN);
        Pipe_Unfreeze();
 
        if (Pipe_IsINReceived())
@@ -348,24 +356,27 @@ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo
        }
 }
 
-uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
+int16_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 {
-       uint8_t ReceivedByte = 0;
-
        if ((USB_HostState != HOST_STATE_Configured) || !(CDCInterfaceInfo->State.IsActive))
-         return 0;
+         return -1;
          
+       int16_t ReceivedByte = -1;
+
        Pipe_SelectPipe(CDCInterfaceInfo->Config.DataINPipeNumber);
-       Pipe_SetPipeToken(PIPE_TOKEN_IN);
        Pipe_Unfreeze();
 
-       ReceivedByte = Pipe_Read_Byte();
-       
-       if (!(Pipe_BytesInPipe()))
-         Pipe_ClearIN();
+       if (Pipe_IsINReceived())
+       {
+               if (Pipe_BytesInPipe())
+                 ReceivedByte = Pipe_Read_Byte();
+
+               if (!(Pipe_BytesInPipe()))
+                 Pipe_ClearIN();
+       }
        
        Pipe_Freeze();
-       
+
        return ReceivedByte;
 }
 
@@ -399,34 +410,41 @@ uint8_t CDC_Host_Flush(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
        return PIPE_READYWAIT_NoError;
 }
 
-void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, FILE* const Stream)
+void CDC_Host_CreateStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                           FILE* const Stream)
 {
        *Stream = (FILE)FDEV_SETUP_STREAM(CDC_Host_putchar, CDC_Host_getchar, _FDEV_SETUP_RW);
        fdev_set_udata(Stream, CDCInterfaceInfo);
 }
 
-void CDC_Host_CreateBlockingStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo, FILE* const Stream)
+void CDC_Host_CreateBlockingStream(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo,
+                                   FILE* const Stream)
 {
        *Stream = (FILE)FDEV_SETUP_STREAM(CDC_Host_putchar, CDC_Host_getchar_Blocking, _FDEV_SETUP_RW);
        fdev_set_udata(Stream, CDCInterfaceInfo);
 }
 
-static int CDC_Host_putchar(char c, FILE* Stream)
+static int CDC_Host_putchar(char c,
+                            FILE* Stream)
 {
        return CDC_Host_SendByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream), c) ? _FDEV_ERR : 0;
 }
 
 static int CDC_Host_getchar(FILE* Stream)
 {
-       if (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
+       int16_t ReceivedByte = CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+
+       if (ReceivedByte < 0)
          return _FDEV_EOF;
 
-       return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+       return ReceivedByte;
 }
 
 static int CDC_Host_getchar_Blocking(FILE* Stream)
 {
-       while (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
+       int16_t ReceivedByte;
+       
+       while ((ReceivedByte = CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))) < 0)
        {
                if (USB_HostState == HOST_STATE_Unattached)
                  return _FDEV_EOF;
@@ -435,7 +453,7 @@ static int CDC_Host_getchar_Blocking(FILE* Stream)
                USB_USBTask();
        }
 
-       return CDC_Host_ReceiveByte((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
+       return ReceivedByte;
 }
 
 void CDC_Host_Event_Stub(void)