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

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

diff --git a/LUFA/Drivers/USB/Core/USBTask.c b/LUFA/Drivers/USB/Core/USBTask.c
new file mode 100644 (file)
index 0000000..c0cd711
--- /dev/null
+++ b/LUFA/Drivers/USB/Core/USBTask.c
@@ -0,0 +1,89 @@
+/*
+             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_USBTASK_C
+#define  __INCLUDE_FROM_USB_DRIVER
+#include "USBTask.h"
+
+volatile bool        USB_IsInitialized;
+USB_Request_Header_t USB_ControlRequest;
+
+#if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR)
+volatile uint8_t     USB_HostState;
+#endif
+
+#if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR)
+volatile uint8_t     USB_DeviceState;
+#endif
+
+void USB_USBTask(void)
+{
+       #if defined(USB_HOST_ONLY)
+               USB_HostTask();
+       #elif defined(USB_DEVICE_ONLY)
+               USB_DeviceTask();
+       #else
+               if (USB_CurrentMode == USB_MODE_Device)
+                 USB_DeviceTask();
+               else if (USB_CurrentMode == USB_MODE_Host)
+                 USB_HostTask();
+       #endif
+}
+
+#if defined(USB_CAN_BE_DEVICE)
+static void USB_DeviceTask(void)
+{
+       if (USB_DeviceState != DEVICE_STATE_Unattached)
+       {
+               uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint();
+
+               Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
+
+               if (Endpoint_IsSETUPReceived())
+                 USB_Device_ProcessControlRequest();
+
+               Endpoint_SelectEndpoint(PrevEndpoint);
+       }
+}
+#endif
+
+#if defined(USB_CAN_BE_HOST)
+static void USB_HostTask(void)
+{
+       uint8_t PrevPipe = Pipe_GetCurrentPipe();
+
+       Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+       USB_Host_ProcessNextHostState();
+
+       Pipe_SelectPipe(PrevPipe);
+}
+#endif
+