diff options
Diffstat (limited to 'LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c')
| -rw-r--r-- | LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c b/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c new file mode 100644 index 000000000..870828ec1 --- /dev/null +++ b/LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c @@ -0,0 +1,144 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2011.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#define __INCLUDE_FROM_USB_DRIVER
+#include "../USBMode.h"
+
+#if defined(USB_CAN_BE_HOST)
+
+#include "../Pipe.h"
+
+uint8_t USB_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
+
+volatile uint8_t USB_SelectedPipe = PIPE_CONTROLPIPE;
+volatile uint8_t* USB_PipeFIFOPos[PIPE_TOTAL_PIPES];
+
+bool Pipe_ConfigurePipe(const uint8_t Number,
+ const uint8_t Type,
+ const uint8_t Token,
+ const uint8_t EndpointNumber,
+ const uint16_t Size,
+ const uint8_t Banks)
+{
+ Pipe_SelectPipe(Number);
+ Pipe_EnablePipe();
+
+ (&AVR32_USBB.upcfg0)[Number] = 0;
+ (&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
+ ((uint32_t)Type << AVR32_USBB_PTYPE_OFFSET) |
+ ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
+ ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET) |
+ ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
+ USB_PipeFIFOPos[Number] = &AVR32_USBB_SLAVE[Number * 0x10000];
+
+ Pipe_SetInfiniteINRequests();
+
+ return Pipe_IsConfigured();
+}
+
+void Pipe_ClearPipes(void)
+{
+ for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
+ {
+ Pipe_SelectPipe(PNum);
+ (&AVR32_USBB.upcfg0)[PNum] = 0;
+ (&AVR32_USBB.upcon0clr)[PNum] = 0xFFFFFFFF;
+ USB_PipeFIFOPos[PNum] = &AVR32_USBB_SLAVE[PNum * 0x10000];
+ Pipe_DisablePipe();
+ }
+}
+
+bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
+{
+ uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
+
+ for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
+ {
+ Pipe_SelectPipe(PNum);
+
+ if (!(Pipe_IsConfigured()))
+ continue;
+
+ uint8_t PipeToken = Pipe_GetPipeToken();
+ bool PipeTokenCorrect = true;
+
+ if (PipeToken != PIPE_TOKEN_SETUP)
+ PipeTokenCorrect = (PipeToken == ((EndpointAddress & PIPE_EPDIR_MASK) ? PIPE_TOKEN_IN : PIPE_TOKEN_OUT));
+
+ if (PipeTokenCorrect && (Pipe_BoundEndpointNumber() == (EndpointAddress & PIPE_EPNUM_MASK)))
+ return true;
+ }
+
+ Pipe_SelectPipe(PrevPipeNumber);
+ return false;
+}
+
+uint8_t Pipe_WaitUntilReady(void)
+{
+ #if (USB_STREAM_TIMEOUT_MS < 0xFF)
+ uint8_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
+ #else
+ uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
+ #endif
+
+ uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
+
+ for (;;)
+ {
+ if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
+ {
+ if (Pipe_IsINReceived())
+ return PIPE_READYWAIT_NoError;
+ }
+ else
+ {
+ if (Pipe_IsOUTReady())
+ return PIPE_READYWAIT_NoError;
+ }
+
+ if (Pipe_IsStalled())
+ return PIPE_READYWAIT_PipeStalled;
+ else if (USB_HostState == HOST_STATE_Unattached)
+ return PIPE_READYWAIT_DeviceDisconnected;
+
+ uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
+
+ if (CurrentFrameNumber != PreviousFrameNumber)
+ {
+ PreviousFrameNumber = CurrentFrameNumber;
+
+ if (!(TimeoutMSRem--))
+ return PIPE_READYWAIT_Timeout;
+ }
+ }
+}
+
+#endif
+
|