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path: root/digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c
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Diffstat (limited to 'digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c')
-rw-r--r--digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c257
1 files changed, 257 insertions, 0 deletions
diff --git a/digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c b/digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c
new file mode 100644
index 00000000..32b4db32
--- /dev/null
+++ b/digital/avr/modules/usb/lufa/LUFA/Drivers/USB/HighLevel/USBTask.c
@@ -0,0 +1,257 @@
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, and distribute this software
+ and its documentation for any purpose and without fee is hereby
+ granted, 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.
+*/
+
+#include "../LowLevel/USBMode.h"
+
+#define INCLUDE_FROM_USBTASK_C
+#include "USBTask.h"
+
+volatile bool USB_IsSuspended;
+volatile bool USB_IsConnected;
+volatile bool USB_IsInitialized;
+
+#if defined(USB_CAN_BE_HOST)
+volatile uint8_t USB_HostState;
+#endif
+
+TASK(USB_USBTask)
+{
+ #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_IsConnected)
+ {
+ uint8_t PrevEndpoint = Endpoint_GetCurrentEndpoint();
+
+ Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
+
+ if (Endpoint_IsSetupReceived())
+ {
+ ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
+ {
+ USB_Device_ProcessControlPacket();
+ }
+ }
+
+ Endpoint_SelectEndpoint(PrevEndpoint);
+ }
+}
+#endif
+
+#if defined(USB_CAN_BE_HOST)
+static void USB_HostTask(void)
+{
+ uint8_t ErrorCode = HOST_ENUMERROR_NoError;
+ uint8_t SubErrorCode = HOST_ENUMERROR_NoError;
+
+ static uint16_t WaitMSRemaining;
+ static uint8_t PostWaitState;
+
+ switch (USB_HostState)
+ {
+ case HOST_STATE_WaitForDevice:
+ if (WaitMSRemaining)
+ {
+ if ((SubErrorCode = USB_Host_WaitMS(1)) != HOST_WAITERROR_Successful)
+ {
+ USB_HostState = PostWaitState;
+ ErrorCode = HOST_ENUMERROR_WaitStage;
+ break;
+ }
+
+ WaitMSRemaining--;
+ }
+ else
+ {
+ USB_HostState = PostWaitState;
+ }
+
+ break;
+ case HOST_STATE_Attached:
+ WaitMSRemaining = HOST_DEVICE_SETTLE_DELAY_MS;
+
+ USB_HostState = HOST_STATE_Attached_WaitForDeviceSettle;
+ break;
+ case HOST_STATE_Attached_WaitForDeviceSettle:
+ _delay_ms(1);
+
+ if (!(WaitMSRemaining--))
+ {
+ USB_Host_VBUS_Manual_Off();
+
+ USB_OTGPAD_On();
+ USB_Host_VBUS_Auto_Enable();
+ USB_Host_VBUS_Auto_On();
+
+ USB_HostState = HOST_STATE_Attached_WaitForConnect;
+ }
+
+ break;
+ case HOST_STATE_Attached_WaitForConnect:
+ if (USB_INT_HasOccurred(USB_INT_DCONNI))
+ {
+ USB_INT_Clear(USB_INT_DCONNI);
+ USB_INT_Clear(USB_INT_DDISCI);
+
+ USB_INT_Clear(USB_INT_VBERRI);
+ USB_INT_Enable(USB_INT_VBERRI);
+
+ USB_IsConnected = true;
+ RAISE_EVENT(USB_Connect);
+
+ USB_Host_ResumeBus();
+ Pipe_ClearPipes();
+
+ HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Attached_DoReset);
+ }
+
+ break;
+ case HOST_STATE_Attached_DoReset:
+ USB_Host_ResetDevice();
+
+ HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Powered);
+ break;
+ case HOST_STATE_Powered:
+ Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
+ PIPE_TOKEN_SETUP, PIPE_CONTROLPIPE,
+ PIPE_CONTROLPIPE_DEFAULT_SIZE, PIPE_BANK_SINGLE);
+
+ if (!(Pipe_IsConfigured()))
+ {
+ ErrorCode = HOST_ENUMERROR_PipeConfigError;
+ SubErrorCode = 0;
+ break;
+ }
+
+ USB_HostState = HOST_STATE_Default;
+ break;
+ case HOST_STATE_Default:
+ USB_HostRequest = (USB_Host_Request_Header_t)
+ {
+ bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE),
+ bRequest: REQ_GetDescriptor,
+ wValue: (DTYPE_Device << 8),
+ wIndex: 0,
+ wLength: PIPE_CONTROLPIPE_DEFAULT_SIZE,
+ };
+
+ #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)
+ uint8_t* DataBuffer = alloca(offsetof(USB_Descriptor_Device_t, Endpoint0Size) + 1);
+ #else
+ uint8_t* DataBuffer = alloca(offsetof(USB_Descriptor_Device_t, bMaxPacketSize0) + 1);
+ #endif
+
+ if ((SubErrorCode = USB_Host_SendControlRequest(DataBuffer)) != HOST_SENDCONTROL_Successful)
+ {
+ ErrorCode = HOST_ENUMERROR_ControlError;
+ break;
+ }
+
+ #if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)
+ USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, Endpoint0Size)];
+ #else
+ USB_ControlPipeSize = DataBuffer[offsetof(USB_Descriptor_Device_t, bMaxPacketSize0)];
+ #endif
+
+ USB_Host_ResetDevice();
+
+ HOST_TASK_NONBLOCK_WAIT(200, HOST_STATE_Default_PostReset);
+ break;
+ case HOST_STATE_Default_PostReset:
+ Pipe_DisablePipe();
+ Pipe_DeallocateMemory();
+ Pipe_ResetPipe(PIPE_CONTROLPIPE);
+
+ Pipe_ConfigurePipe(PIPE_CONTROLPIPE, EP_TYPE_CONTROL,
+ PIPE_TOKEN_SETUP, PIPE_CONTROLPIPE,
+ USB_ControlPipeSize, PIPE_BANK_SINGLE);
+
+ if (!(Pipe_IsConfigured()))
+ {
+ ErrorCode = HOST_ENUMERROR_PipeConfigError;
+ SubErrorCode = 0;
+ break;
+ }
+
+ Pipe_SetInfiniteINRequests();
+
+ USB_HostRequest = (USB_Host_Request_Header_t)
+ {
+ bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
+ bRequest: REQ_SetAddress,
+ wValue: USB_HOST_DEVICEADDRESS,
+ wIndex: 0,
+ wLength: 0,
+ };
+
+ if ((SubErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+ {
+ ErrorCode = HOST_ENUMERROR_ControlError;
+ break;
+ }
+
+ HOST_TASK_NONBLOCK_WAIT(100, HOST_STATE_Default_PostAddressSet);
+ break;
+ case HOST_STATE_Default_PostAddressSet:
+ USB_Host_SetDeviceAddress(USB_HOST_DEVICEADDRESS);
+
+ RAISE_EVENT(USB_DeviceEnumerationComplete);
+ USB_HostState = HOST_STATE_Addressed;
+
+ break;
+ }
+
+ if ((ErrorCode != HOST_ENUMERROR_NoError) && (USB_HostState != HOST_STATE_Unattached))
+ {
+ RAISE_EVENT(USB_DeviceEnumerationFailed, ErrorCode, SubErrorCode);
+
+ USB_Host_VBUS_Auto_Off();
+
+ RAISE_EVENT(USB_DeviceUnattached);
+
+ if (USB_IsConnected)
+ RAISE_EVENT(USB_Disconnect);
+
+ USB_ResetInterface();
+ }
+}
+#endif