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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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208
LUFA/Drivers/USB/LowLevel/Endpoint.c
View file

@ -119,6 +119,46 @@ uint8_t Endpoint_Discard_Stream(uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Endpoint_Discard_Byte();
case 7: Endpoint_Discard_Byte();
case 6: Endpoint_Discard_Byte();
case 5: Endpoint_Discard_Byte();
case 4: Endpoint_Discard_Byte();
case 3: Endpoint_Discard_Byte();
case 2: Endpoint_Discard_Byte();
case 1: Endpoint_Discard_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))
@ -155,6 +195,46 @@ uint8_t Endpoint_Write_Stream_LE(const void* Buffer, uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Endpoint_Write_Byte(*(DataStream++));
case 7: Endpoint_Write_Byte(*(DataStream++));
case 6: Endpoint_Write_Byte(*(DataStream++));
case 5: Endpoint_Write_Byte(*(DataStream++));
case 4: Endpoint_Write_Byte(*(DataStream++));
case 3: Endpoint_Write_Byte(*(DataStream++));
case 2: Endpoint_Write_Byte(*(DataStream++));
case 1: Endpoint_Write_Byte(*(DataStream++));
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))
@ -175,7 +255,7 @@ uint8_t Endpoint_Write_Stream_LE(const void* Buffer, uint16_t Length
Length--;
}
}
return ENDPOINT_RWSTREAM_NoError;
}
@ -191,6 +271,46 @@ uint8_t Endpoint_Write_Stream_BE(const void* Buffer, uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Endpoint_Write_Byte(*(DataStream--));
case 7: Endpoint_Write_Byte(*(DataStream--));
case 6: Endpoint_Write_Byte(*(DataStream--));
case 5: Endpoint_Write_Byte(*(DataStream--));
case 4: Endpoint_Write_Byte(*(DataStream--));
case 3: Endpoint_Write_Byte(*(DataStream--));
case 2: Endpoint_Write_Byte(*(DataStream--));
case 1: Endpoint_Write_Byte(*(DataStream--));
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))
@ -211,7 +331,7 @@ uint8_t Endpoint_Write_Stream_BE(const void* Buffer, uint16_t Length
Length--;
}
}
return ENDPOINT_RWSTREAM_NoError;
}
@ -227,6 +347,46 @@ uint8_t Endpoint_Read_Stream_LE(void* Buffer, uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
*(DataStream++) = Endpoint_Read_Byte();
case 7: *(DataStream++) = Endpoint_Read_Byte();
case 6: *(DataStream++) = Endpoint_Read_Byte();
case 5: *(DataStream++) = Endpoint_Read_Byte();
case 4: *(DataStream++) = Endpoint_Read_Byte();
case 3: *(DataStream++) = Endpoint_Read_Byte();
case 2: *(DataStream++) = Endpoint_Read_Byte();
case 1: *(DataStream++) = Endpoint_Read_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))
@ -247,7 +407,7 @@ uint8_t Endpoint_Read_Stream_LE(void* Buffer, uint16_t Length
Length--;
}
}
return ENDPOINT_RWSTREAM_NoError;
}
@ -263,6 +423,46 @@ uint8_t Endpoint_Read_Stream_BE(void* Buffer, uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
*(DataStream--) = Endpoint_Read_Byte();
case 7: *(DataStream--) = Endpoint_Read_Byte();
case 6: *(DataStream--) = Endpoint_Read_Byte();
case 5: *(DataStream--) = Endpoint_Read_Byte();
case 4: *(DataStream--) = Endpoint_Read_Byte();
case 3: *(DataStream--) = Endpoint_Read_Byte();
case 2: *(DataStream--) = Endpoint_Read_Byte();
case 1: *(DataStream--) = Endpoint_Read_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))
@ -283,7 +483,7 @@ uint8_t Endpoint_Read_Stream_BE(void* Buffer, uint16_t Length
Length--;
}
}
return ENDPOINT_RWSTREAM_NoError;
}
#endif