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Added const modifiers to device mode class drivers.

Browse source 
Added parameter directions to function parameter documentation.

Added new experimental FAST_STREAM_FUNCTIONS compile time option to speed up stream transfers at the expense of a higher FLASH consumption (needs testing to verify improved throughput).
This commit is contained in:
Dean Camera 2009-06-28 13:39:08 +00:00
parent 3cbdcd3686
commit f1076ac4d6
115 changed files with 1031 additions and 633 deletions
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200
LUFA/Drivers/USB/LowLevel/Pipe.c
View file

@ -120,6 +120,46 @@ uint8_t Pipe_Write_Stream_LE(const void* Data, uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Pipe_Write_Byte(*(DataStream++));
case 7: Pipe_Write_Byte(*(DataStream++));
case 6: Pipe_Write_Byte(*(DataStream++));
case 5: Pipe_Write_Byte(*(DataStream++));
case 4: Pipe_Write_Byte(*(DataStream++));
case 3: Pipe_Write_Byte(*(DataStream++));
case 2: Pipe_Write_Byte(*(DataStream++));
case 1: Pipe_Write_Byte(*(DataStream++));
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))
@ -158,6 +198,46 @@ uint8_t Pipe_Write_Stream_BE(const void* Data, uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Pipe_Write_Byte(*(DataStream--));
case 7: Pipe_Write_Byte(*(DataStream--));
case 6: Pipe_Write_Byte(*(DataStream--));
case 5: Pipe_Write_Byte(*(DataStream--));
case 4: Pipe_Write_Byte(*(DataStream--));
case 3: Pipe_Write_Byte(*(DataStream--));
case 2: Pipe_Write_Byte(*(DataStream--));
case 1: Pipe_Write_Byte(*(DataStream--));
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))
@ -195,6 +275,46 @@ uint8_t Pipe_Discard_Stream(uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Pipe_Discard_Byte();
case 7: Pipe_Discard_Byte();
case 6: Pipe_Discard_Byte();
case 5: Pipe_Discard_Byte();
case 4: Pipe_Discard_Byte();
case 3: Pipe_Discard_Byte();
case 2: Pipe_Discard_Byte();
case 1: Pipe_Discard_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))
@ -233,6 +353,46 @@ uint8_t Pipe_Read_Stream_LE(void* Buffer, uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
*(DataStream++) = Pipe_Read_Byte();
case 7: *(DataStream++) = Pipe_Read_Byte();
case 6: *(DataStream++) = Pipe_Read_Byte();
case 5: *(DataStream++) = Pipe_Read_Byte();
case 4: *(DataStream++) = Pipe_Read_Byte();
case 3: *(DataStream++) = Pipe_Read_Byte();
case 2: *(DataStream++) = Pipe_Read_Byte();
case 1: *(DataStream++) = Pipe_Read_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))
@ -271,6 +431,46 @@ uint8_t Pipe_Read_Stream_BE(void* Buffer, uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
*(DataStream--) = Pipe_Read_Byte();
case 7: *(DataStream--) = Pipe_Read_Byte();
case 6: *(DataStream--) = Pipe_Read_Byte();
case 5: *(DataStream--) = Pipe_Read_Byte();
case 4: *(DataStream--) = Pipe_Read_Byte();
case 3: *(DataStream--) = Pipe_Read_Byte();
case 2: *(DataStream--) = Pipe_Read_Byte();
case 1: *(DataStream--) = Pipe_Read_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))