Commit 32f0f605 authored by Dean Camera's avatar Dean Camera
Browse files

Removed all user pipe/endpoint interrupt APIs, added internal library support...

Removed all user pipe/endpoint interrupt APIs, added internal library support for interrupt driven control endpoints when in device mode by defining INTERRUPT_CONTROL_ENDPOINT token and passing it to the compiler via the -D switch.
parent 0d5baf9b
......@@ -39,10 +39,7 @@
/* Scheduler Task List */
TASK_LIST
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
#endif
{ .Task = USB_HID_Report , .TaskStatus = TASK_STOP },
};
......@@ -75,30 +72,13 @@ int main(void)
Scheduler_Start();
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
* enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled
* asynchronously when they arrive rather than when the control endpoint is polled manually.
*/
EVENT_HANDLER(USB_Reset)
{
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
#endif
}
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and
* starts the library USB task to begin the enumeration and USB management process.
*/
EVENT_HANDLER(USB_Connect)
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
#endif
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
......@@ -111,10 +91,7 @@ EVENT_HANDLER(USB_Disconnect)
{
/* Stop running HID reporting and USB management tasks */
Scheduler_SetTaskMode(USB_HID_Report, TASK_STOP);
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
#endif
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
......@@ -298,32 +275,3 @@ TASK(USB_HID_Report)
}
}
}
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
* controller.
*/
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
{
/* Save previously selected endpoint before selecting a new endpoint */
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
/* Clear the endpoint interrupt */
Endpoint_ClearEndpointInterrupt(ENDPOINT_CONTROLEP);
/* Process the control request */
USB_USBTask();
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
/* Restore previously selected endpoint */
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif
......@@ -68,9 +68,6 @@
};
/* Event Handlers: */
/** Indicates that this module will catch the USB_Reset event when thrown by the library. */
HANDLES_EVENT(USB_Reset);
/** Indicates that this module will catch the USB_Connect event when thrown by the library. */
HANDLES_EVENT(USB_Connect);
......
......@@ -60,12 +60,5 @@
* <td>This token defines the size of the device reports, both sent and received. The value must be an
* integer ranging from 1 to 255.</td>
* </tr>
* <tr>
* <td>INTERRUPT_CONTROL_ENDPOINT</td>
* <td>Makefile CDEFS</td>
* <td>When defined, this causes the demo to enable interrupts for the control endpoint,
* which services control requests from the host. If not defined, the control endpoint
* is serviced via polling using the task scheduler.</td>
* </tr>
* </table>
*/
......@@ -40,10 +40,7 @@
/* Scheduler Task List */
TASK_LIST
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
#endif
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
{ .Task = USB_Keyboard_Report , .TaskStatus = TASK_STOP },
};
......@@ -105,10 +102,8 @@ int main(void)
*/
EVENT_HANDLER(USB_Connect)
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
#endif
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
......@@ -117,21 +112,6 @@ EVENT_HANDLER(USB_Connect)
UsingReportProtocol = true;
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
* enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled
* asynchronously when they arrive rather than when the control endpoint is polled manually.
*/
EVENT_HANDLER(USB_Reset)
{
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
#endif
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs.
*/
......@@ -139,10 +119,7 @@ EVENT_HANDLER(USB_Disconnect)
{
/* Stop running keyboard reporting and USB management tasks */
Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_STOP);
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
#endif
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
......@@ -445,30 +422,3 @@ TASK(USB_Keyboard_Report)
ReceiveNextReport();
}
}
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
* controller. It is also used to respond to standard and class specific requests send to the device on the control
* endpoint, by handing them off to the LUFA library when they are received.
*/
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
{
/* Save previously selected endpoint before selecting a new endpoint */
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
/* Process the control request */
USB_USBTask();
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
/* Restore previously selected endpoint */
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif
......@@ -105,9 +105,6 @@
/** Indicates that this module will catch the USB_Disconnect event when thrown by the library. */
HANDLES_EVENT(USB_Disconnect);
/** Indicates that this module will catch the USB_Reset event when thrown by the library. */
HANDLES_EVENT(USB_Reset);
/** Indicates that this module will catch the USB_ConfigurationChanged event when thrown by the library. */
HANDLES_EVENT(USB_ConfigurationChanged);
......
......@@ -52,16 +52,9 @@
*
* <table>
* <tr>
* <td><b>Define Name:</b></td>
* <td><b>Location:</b></td>
* <td><b>Description:</b></td>
* </tr>
* <tr>
* <td>INTERRUPT_CONTROL_ENDPOINT</td>
* <td>Makefile CDEFS</td>
* <td>When defined, this causes the demo to enable interrupts for the control endpoint,
* which services control requests from the host. If not defined, the control endpoint
* is serviced via polling using the task scheduler.</td>
* <td>
* None
* </td>
* </tr>
* </table>
*/
......@@ -85,19 +85,6 @@ int main(void)
Scheduler_Start();
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
* enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled
* asynchronously when they arrive rather than when the control endpoint is polled manually.
*/
EVENT_HANDLER(USB_Reset)
{
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
}
/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */
EVENT_HANDLER(USB_Connect)
{
......@@ -376,21 +363,3 @@ STREAM_CALLBACK(AbortOnMassStoreReset)
/* Continue with the current stream operation */
return STREAMCALLBACK_Continue;
}
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when a control request has been issued to the control endpoint,
* so that the request can be processed. As several elements of the Mass Storage implementation require asynchronous control requests
* (such as endpoint stall clearing and Mass Storage Reset requests during data transfers) this is done via interrupts rather than
* polling so that they can be processed regardless of the rest of the application's state.
*/
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
{
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
/* Process the control request */
USB_USBTask();
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
}
......@@ -134,9 +134,6 @@
STREAM_CALLBACK(AbortOnMassStoreReset);
/* Event Handlers: */
/** Indicates that this module will catch the USB_Reset event when thrown by the library. */
HANDLES_EVENT(USB_Reset);
/** Indicates that this module will catch the USB_Connect event when thrown by the library. */
HANDLES_EVENT(USB_Connect);
......
......@@ -58,6 +58,11 @@
* 255), with each LUN being allocated an equal portion of the available
* Dataflash memory.
*
* The USB control endpoint is managed entirely by the library using endpoint
* interrupts, as the INTERRUPT_CONTROL_ENDPOINT option is enabled. This allows for
* the host to reset the Mass Storage device state during long transfers without
* the need for complicated polling logic.
*
* \section SSec_Options Project Options
*
* The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
......
......@@ -189,6 +189,7 @@ CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD)
CDEFS += -DUSE_NONSTANDARD_DESCRIPTOR_NAMES -DUSB_DEVICE_ONLY
CDEFS += -DFIXED_CONTROL_ENDPOINT_SIZE=8 -DUSE_SINGLE_DEVICE_CONFIGURATION
CDEFS += -DUSE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"
CDEFS += -DINTERRUPT_CONTROL_ENDPOINT
# Place -D or -U options here for ASM sources
......
......@@ -39,10 +39,7 @@
/* Scheduler Task List */
TASK_LIST
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
{ .Task = USB_USBTask , .TaskStatus = TASK_STOP },
#endif
{ .Task = USB_Mouse_Report , .TaskStatus = TASK_STOP },
};
......@@ -105,10 +102,8 @@ int main(void)
*/
EVENT_HANDLER(USB_Connect)
{
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
/* Start USB management task */
Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);
#endif
/* Indicate USB enumerating */
UpdateStatus(Status_USBEnumerating);
......@@ -117,21 +112,6 @@ EVENT_HANDLER(USB_Connect)
UsingReportProtocol = true;
}
/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the
* enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled
* asynchronously when they arrive rather than when the control endpoint is polled manually.
*/
EVENT_HANDLER(USB_Reset)
{
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/* Select the control endpoint */
Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
/* Enable the endpoint SETUP interrupt ISR for the control endpoint */
USB_INT_Enable(ENDPOINT_INT_SETUP);
#endif
}
/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
* the status LEDs and stops the USB management and Mouse reporting tasks.
*/
......@@ -139,10 +119,7 @@ EVENT_HANDLER(USB_Disconnect)
{
/* Stop running mouse reporting and USB management tasks */
Scheduler_SetTaskMode(USB_Mouse_Report, TASK_STOP);
#if !defined(INTERRUPT_CONTROL_ENDPOINT)
Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);
#endif
/* Indicate USB not ready */
UpdateStatus(Status_USBNotReady);
......@@ -381,30 +358,3 @@ TASK(USB_Mouse_Report)
SendNextReport();
}
}
#if defined(INTERRUPT_CONTROL_ENDPOINT)
/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as
* a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send
* HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB
* controller. It is also used to respond to standard and class specific requests send to the device on the control
* endpoint, by handing them off to the LUFA library when they are received.
*/
ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)
{
/* Save previously selected endpoint before selecting a new endpoint */
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
/* Check if the control endpoint has received a request */
if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))
{
/* Process the control request */
USB_USBTask();
/* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */
USB_INT_Clear(ENDPOINT_INT_SETUP);
}
/* Restore previously selected endpoint */
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif
......@@ -105,9 +105,6 @@
/** Indicates that this module will catch the USB_Disconnect event when thrown by the library. */
HANDLES_EVENT(USB_Disconnect);
/** Indicates that this module will catch the USB_Reset event when thrown by the library. */
HANDLES_EVENT(USB_Reset);
/** Indicates that this module will catch the USB_ConfigurationChanged event when thrown by the library. */
HANDLES_EVENT(USB_ConfigurationChanged);
......
......@@ -53,16 +53,9 @@
*
* <table>
* <tr>
* <td><b>Define Name:</b></td>
* <td><b>Location:</b></td>
* <td><b>Description:</b></td>
* </tr>
* <tr>
* <td>INTERRUPT_CONTROL_ENDPOINT</td>
* <td>Makefile CDEFS</td>
* <td>When defined, this causes the demo to enable interrupts for the control endpoint,
* which services control requests from the host. If not defined, the control endpoint
* is serviced via polling using the task scheduler.</td>
* <td>
* None
* </td>
* </tr>
* </table>
*/
......@@ -331,12 +331,6 @@ TASK(USB_HID_Host)
break;
}
#if defined(INTERRUPT_DATA_PIPE)
/* Select and unfreeze HID data IN pipe */
Pipe_SelectPipe(HID_DATA_IN_PIPE);
Pipe_Unfreeze();
#endif
puts_P(PSTR("HID Device Enumerated.\r\n"));
USB_HostState = HOST_STATE_Ready;
......
......@@ -14,6 +14,7 @@
* - Fixed Mouse and Keyboard device demos not acting in accordance with the HID specification for idle periods (thanks to Brian Dickman)
* - Removed support for endpoint/pipe non-control interrupts; these did not act in the way users expected, and had many subtle issues
* - Fixed Device Mode not handling Set Feature and Clear Feature Chapter 9 requests that are addressed to the device (thanks to Brian Dickman)
* - Moved control endpoint interrupt handling into the library itself, enable via the new INTERRUPT_CONTROL_ENDPOINT token
*
*
* \section Sec_ChangeLog090510 Version 090510
......
......@@ -158,4 +158,9 @@
* required, the VBUS line of the USB connector should be routed to an AVR pin to detect its level, so that the USB_IsConnected global
* can be accurately set and the USB_Connect and USB_Disconnect events manually raised by the RAISE_EVENT macro. When defined, this token disables
* the library's auto-detection of the connection state by the aforementioned suspension and wake up events.
*
* <b>INTERRUPT_CONTROL_ENDPOINT</b> - ( \ref Group_USBManagement ) \n
* Some applications prefer to not call the USB_USBTask() management task reguarly while in device mode, as it can complicate code significantly.
* Instead, when device mode is used this token can be passed to the library via the -D switch to allow the library to manage the USB control
* endpoint entirely via interrupts asynchronously to the user application.
*/
......@@ -174,6 +174,10 @@ ISR(USB_GEN_vect, ISR_BLOCK)
ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
ENDPOINT_BANK_SINGLE);
#if defined(INTERRUPT_CONTROL_ENDPOINT)
USB_INT_Enable(USB_INT_ENDPOINT_SETUP);
#endif
RAISE_EVENT(USB_Reset);
}
#endif
......@@ -249,3 +253,16 @@ ISR(USB_GEN_vect, ISR_BLOCK)
}
#endif
}
#if defined(INTERRUPT_CONTROL_ENDPOINT)
ISR(USB_COM_vect, ISR_BLOCK)
{
uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();
USB_USBTask();
USB_INT_Clear(USB_INT_ENDPOINT_SETUP);
Endpoint_SelectEndpoint(PrevSelectedEndpoint);
}
#endif
......@@ -28,16 +28,6 @@
this software.
*/
/** \ingroup Group_USB
* @defgroup Group_USBInterrupt Endpoint and Pipe Interrupts
*
* This module manages the main USB interrupt vector, for handling such events as VBUS interrupts
* (on supported USB AVR models), device connections and disconnections, etc. as well as providing
* easy to use macros for the management of the unified Endpoint/Pipe interrupt vector.
*
* @{
*/
#ifndef __USBINTERRUPT_H__
#define __USBINTERRUPT_H__
......@@ -56,37 +46,6 @@
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Vector name for the common endpoint and pipe vector. This can be used to write an ISR handler
* for the endpoint and pipe events, to make certain USB functions interrupt rather than poll
* driven.
*/
#define ENDPOINT_PIPE_vect USB_COM_vect
/** Enables the given USB interrupt vector (such as the ENDPOINT_INT_* and PIPE_INT_* vectors in
* Endpoint.h and Pipe.h).
*/
#define USB_INT_Enable(int) MACROS{ USB_INT_GET_EN_REG(int) |= USB_INT_GET_EN_MASK(int); }MACROE
/** Disables the given USB interrupt vector.
*
* \see \ref USB_INT_Enable()
*/
#define USB_INT_Disable(int) MACROS{ USB_INT_GET_EN_REG(int) &= ~(USB_INT_GET_EN_MASK(int)); }MACROE
/** Resets the given USB interrupt flag, so that the interrupt is re-primed for the next firing. */
#define USB_INT_Clear(int) MACROS{ USB_INT_GET_INT_REG(int) &= ~(USB_INT_GET_INT_MASK(int)); }MACROE
/** Returns boolean false if the given USB interrupt is disabled, or true if the interrupt is currently
* enabled.
*/
#define USB_INT_IsEnabled(int) ((USB_INT_GET_EN_REG(int) & USB_INT_GET_EN_MASK(int)) ? true : false)
/** Returns boolean true if the given interrupt flag is set (i.e. the condition for the interrupt has occurred,
* but the interrupt vector is not necessarily enabled), otherwise returns false.
*/
#define USB_INT_HasOccurred(int) ((USB_INT_GET_INT_REG(int) & USB_INT_GET_INT_MASK(int)) ? true : false)
/* Throwable Events: */
/** This module raises the USB Connected interrupt when the AVR is attached to a host while in device
* USB mode.
......@@ -196,6 +155,12 @@
/* Private Interface - For use in library only: */
#if !defined(__DOXYGEN__)
/* Macros: */
#define USB_INT_Enable(int) MACROS{ USB_INT_GET_EN_REG(int) |= USB_INT_GET_EN_MASK(int); }MACROE
#define USB_INT_Disable(int) MACROS{ USB_INT_GET_EN_REG(int) &= ~(USB_INT_GET_EN_MASK(int)); }MACROE
#define USB_INT_Clear(int) MACROS{ USB_INT_GET_INT_REG(int) &= ~(USB_INT_GET_INT_MASK(int)); }MACROE
#define USB_INT_IsEnabled(int) ((USB_INT_GET_EN_REG(int) & USB_INT_GET_EN_MASK(int)) ? true : false)
#define USB_INT_HasOccurred(int) ((USB_INT_GET_INT_REG(int) & USB_INT_GET_INT_MASK(int)) ? true : false)
#define USB_INT_GET_EN_REG(a, b, c, d) a
#define USB_INT_GET_EN_MASK(a, b, c, d) b
#define USB_INT_GET_INT_REG(a, b, c, d) c
......@@ -214,6 +179,7 @@
#define USB_INT_HSOFI UHIEN, (1 << HSOFE) , UHINT , (1 << HSOFI)
#define USB_INT_RSTI UHIEN , (1 << RSTE) , UHINT , (1 << RSTI)
#define USB_INT_SRPI OTGIEN, (1 << SRPE) , OTGINT, (1 << SRPI)
#define USB_INT_ENDPOINT_SETUP UEIENX, (1 << RXSTPE) , UEINTX, (1 << RXSTPI)
/* Function Prototypes: */
void USB_INT_ClearAllInterrupts(void);
......@@ -226,5 +192,3 @@
#endif
#endif
/** @} */
......@@ -183,6 +183,9 @@
* - In host mode, it may be disabled at start-up, enabled on the firing of the \ref USB_DeviceAttached
* event and disabled again on the firing of the \ref USB_DeviceUnattached event.
*
* If in device mode (only), the control endpoint can instead be managed via interrupts entirely by the library
* by defining the INTERRUPT_CONTROL_ENDPOINT token and passing it to the compiler via the -D switch.
*
* \see \ref Group_Events for more information on the USB events.
*
* \ingroup Group_USBManagement
......
......@@ -140,19 +140,6 @@
#else
#define ENDPOINT_TOTAL_ENDPOINTS 1
#endif
/** Interrupt definition for the endpoint SETUP interrupt (for CONTROL type endpoints). Should be
* used with the USB_INT_* macros located in USBInterrupt.h.
*
* This interrupt will fire if enabled on a CONTROL type endpoint if a new control packet is
* received from the host.
*
* \note This interrupt must be enabled and cleared on *each* endpoint which requires it (after the
* endpoint is selected), and will fire the common endpoint interrupt vector.
*
* \see \ref ENDPOINT_PIPE_vect for more information on the common pipe and endpoint interrupt vector.
*/
#define ENDPOINT_INT_SETUP UEIENX, (1 << RXSTPE), UEINTX, (1 << RXSTPI)
/* Pseudo-Function Macros: */
#if defined(__DOXYGEN__)
......
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