Initial restructuring of the core USB driver module to support multiple architectures...

[pub/lufa.git] / LUFA / Drivers / USB / Core / AVR8 / Endpoint.c

diff --git a/LUFA/Drivers/USB/Core/AVR8/Endpoint.c b/LUFA/Drivers/USB/Core/AVR8/Endpoint.c
new file mode 100644 (file)
index 0000000..c4e32c0
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/AVR8/Endpoint.c
@@ -0,0 +1,182 @@
+/*
+             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_DEVICE)
+
+#include "Endpoint.h"
+
+#if !defined(FIXED_CONTROL_ENDPOINT_SIZE)
+uint8_t USB_ControlEndpointSize = ENDPOINT_CONTROLEP_DEFAULT_SIZE;
+#endif
+
+bool Endpoint_ConfigureEndpoint_Prv(const uint8_t Number,
+                                    const uint8_t UECFG0XData,
+                                    const uint8_t UECFG1XData)
+{
+#if defined(CONTROL_ONLY_DEVICE) || defined(ORDERED_EP_CONFIG)
+       Endpoint_SelectEndpoint(Number);
+       Endpoint_EnableEndpoint();
+
+       UECFG1X = 0;
+       UECFG0X = UECFG0XData;
+       UECFG1X = UECFG1XData;
+
+       return Endpoint_IsConfigured();
+#else  
+       for (uint8_t EPNum = Number; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
+       {
+               uint8_t UECFG0XTemp;
+               uint8_t UECFG1XTemp;
+               uint8_t UEIENXTemp;
+
+               Endpoint_SelectEndpoint(EPNum);
+               
+               if (EPNum == Number)
+               {
+                       UECFG0XTemp = UECFG0XData;
+                       UECFG1XTemp = UECFG1XData;
+                       UEIENXTemp  = 0;
+               }
+               else
+               {
+                       UECFG0XTemp = UECFG0X;
+                       UECFG1XTemp = UECFG1X;
+                       UEIENXTemp  = UEIENX;
+               }
+
+               if (!(UECFG1XTemp & (1 << ALLOC)))
+                 continue;
+
+               Endpoint_DisableEndpoint();
+               UECFG1X &= (1 << ALLOC);
+
+               Endpoint_EnableEndpoint();
+               UECFG0X = UECFG0XTemp;
+               UECFG1X = UECFG1XTemp;
+               UEIENX  = UEIENXTemp;
+                       
+               if (!(Endpoint_IsConfigured()))
+                 return false;                 
+       }
+       
+       Endpoint_SelectEndpoint(Number);
+       return true;
+#endif
+}
+
+void Endpoint_ClearEndpoints(void)
+{
+       UEINT = 0;
+
+       for (uint8_t EPNum = 0; EPNum < ENDPOINT_TOTAL_ENDPOINTS; EPNum++)
+       {
+               Endpoint_SelectEndpoint(EPNum);
+               UEIENX  = 0;
+               UEINTX  = 0;
+               UECFG1X = 0;
+               Endpoint_DisableEndpoint();
+       }
+}
+
+void Endpoint_ClearStatusStage(void)
+{
+       if (USB_ControlRequest.bmRequestType & REQDIR_DEVICETOHOST)
+       {
+               while (!(Endpoint_IsOUTReceived()))
+               {
+                       if (USB_DeviceState == DEVICE_STATE_Unattached)
+                         return;
+               }
+
+               Endpoint_ClearOUT();
+       }
+       else
+       {
+               while (!(Endpoint_IsINReady()))
+               {
+                       if (USB_DeviceState == DEVICE_STATE_Unattached)
+                         return;
+               }
+
+               Endpoint_ClearIN();
+       }
+}
+
+#if !defined(CONTROL_ONLY_DEVICE)
+uint8_t Endpoint_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_Device_GetFrameNumber();
+
+       for (;;)
+       {
+               if (Endpoint_GetEndpointDirection() == ENDPOINT_DIR_IN)
+               {
+                       if (Endpoint_IsINReady())
+                         return ENDPOINT_READYWAIT_NoError;
+               }
+               else
+               {
+                       if (Endpoint_IsOUTReceived())
+                         return ENDPOINT_READYWAIT_NoError;
+               }
+               
+               uint8_t USB_DeviceState_LCL = USB_DeviceState;
+
+               if (USB_DeviceState_LCL == DEVICE_STATE_Unattached)
+                 return ENDPOINT_READYWAIT_DeviceDisconnected;
+               else if (USB_DeviceState_LCL == DEVICE_STATE_Suspended)
+                 return ENDPOINT_READYWAIT_BusSuspended;
+               else if (Endpoint_IsStalled())
+                 return ENDPOINT_READYWAIT_EndpointStalled;
+
+               uint16_t CurrentFrameNumber = USB_Device_GetFrameNumber();
+
+               if (CurrentFrameNumber != PreviousFrameNumber)
+               {
+                       PreviousFrameNumber = CurrentFrameNumber;
+
+                       if (!(TimeoutMSRem--))
+                         return ENDPOINT_READYWAIT_Timeout;
+               }
+       }
+}
+#endif
+
+#endif
+