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author | Dean Camera <dean@fourwalledcubicle.com> | 2011-05-26 11:27:21 +0000 |
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committer | Dean Camera <dean@fourwalledcubicle.com> | 2011-05-26 11:27:21 +0000 |
commit | 1ea5dae8a824264580baea2479da7c58711ae879 (patch) | |
tree | 14dc584c7ce1da61cbf4d987d874e8c99d1fe3ad /LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c | |
parent | edc4db41f46f473fc0ba95fd03920d10aba1de4a (diff) | |
download | lufa-1ea5dae8a824264580baea2479da7c58711ae879.tar.gz lufa-1ea5dae8a824264580baea2479da7c58711ae879.tar.bz2 lufa-1ea5dae8a824264580baea2479da7c58711ae879.zip |
Copy out the EndpointStream and PipeStream functions to each architecture, so that each architecture can optimise the stream functions according to the available hardware (such as DMA, where available).
Diffstat (limited to 'LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c')
-rw-r--r-- | LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c b/LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c new file mode 100644 index 000000000..a46d7513b --- /dev/null +++ b/LUFA/Drivers/USB/Core/UC3/Template/Template_Endpoint_RW.c @@ -0,0 +1,54 @@ +uint8_t TEMPLATE_FUNC_NAME (TEMPLATE_BUFFER_TYPE const Buffer, + uint16_t Length, + uint16_t* const BytesProcessed) +{ + uint8_t* DataStream = ((uint8_t*)Buffer + TEMPLATE_BUFFER_OFFSET(Length)); + uint16_t BytesInTransfer = 0; + uint8_t ErrorCode; + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + + if (BytesProcessed != NULL) + { + Length -= *BytesProcessed; + TEMPLATE_BUFFER_MOVE(DataStream, *BytesProcessed); + } + + while (Length) + { + if (!(Endpoint_IsReadWriteAllowed())) + { + TEMPLATE_CLEAR_ENDPOINT(); + + if (BytesProcessed != NULL) + { + *BytesProcessed += BytesInTransfer; + return ENDPOINT_RWSTREAM_IncompleteTransfer; + } + + #if !defined(INTERRUPT_CONTROL_ENDPOINT) + USB_USBTask(); + #endif + + if ((ErrorCode = Endpoint_WaitUntilReady())) + return ErrorCode; + } + else + { + TEMPLATE_TRANSFER_BYTE(DataStream); + TEMPLATE_BUFFER_MOVE(DataStream, 1); + Length--; + BytesInTransfer++; + } + } + + return ENDPOINT_RWSTREAM_NoError; +} + +#undef TEMPLATE_FUNC_NAME +#undef TEMPLATE_BUFFER_TYPE +#undef TEMPLATE_TRANSFER_BYTE +#undef TEMPLATE_CLEAR_ENDPOINT +#undef TEMPLATE_BUFFER_OFFSET +#undef TEMPLATE_BUFFER_MOVE |