Reduced latency for executing the Start-Of-Frame events (if enabled in the user appli...

[pub/USBasp.git] / LUFA / Drivers / USB / LowLevel / USBInterrupt.c

diff --git a/LUFA/Drivers/USB/LowLevel/USBInterrupt.c b/LUFA/Drivers/USB/LowLevel/USBInterrupt.c
index 43df5f6..34234fe 100644 (file)
--- a/LUFA/Drivers/USB/LowLevel/USBInterrupt.c
+++ b/LUFA/Drivers/USB/LowLevel/USBInterrupt.c
@@ -1,21 +1,21 @@
 /*
              LUFA Library
 /*
              LUFA Library

-     Copyright (C) Dean Camera, 2010.
-              
+     Copyright (C) Dean Camera, 2011.
+

   dean [at] fourwalledcubicle [dot] com
   dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com
+           www.lufa-lib.org

 */
 
 /*
 */
 
 /*

-  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)

 
 

-  Permission to use, copy, modify, distribute, and sell this 
+  Permission to use, copy, modify, distribute, and sell this

   software and its documentation for any purpose is hereby granted
   software and its documentation for any purpose is hereby granted

-  without fee, provided that the above copyright notice appear in 
+  without fee, provided that the above copyright notice appear in

   all copies and that both that the copyright notice and this
   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 
+  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 without specific, written prior permission.
 
   The author disclaim all warranties with regard to this


@@ -34,16 +34,19 @@
 void USB_INT_DisableAllInterrupts(void)
 {
        #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
 void USB_INT_DisableAllInterrupts(void)
 {
        #if defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)

-       USBCON &= ~((1 << VBUSTE) | (1 << IDTE));                               
+       USBCON &= ~((1 << VBUSTE) | (1 << IDTE));

        #elif defined(USB_SERIES_4_AVR)
        USBCON &= ~(1 << VBUSTE);
        #endif
        #elif defined(USB_SERIES_4_AVR)
        USBCON &= ~(1 << VBUSTE);
        #endif

-       
+
+       #if defined(USB_CAN_BE_BOTH)
+       OTGIEN  = 0;
+       #endif
+

        #if defined(USB_CAN_BE_HOST)
        UHIEN   = 0;
        #if defined(USB_CAN_BE_HOST)
        UHIEN   = 0;

-       OTGIEN  = 0;

        #endif
        #endif

-       
+

        #if defined(USB_CAN_BE_DEVICE)
        UDIEN   = 0;
        #endif
        #if defined(USB_CAN_BE_DEVICE)
        UDIEN   = 0;
        #endif


@@ -52,22 +55,34 @@ void USB_INT_DisableAllInterrupts(void)
 void USB_INT_ClearAllInterrupts(void)
 {
        #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
 void USB_INT_ClearAllInterrupts(void)
 {
        #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)

-       USBINT  = 0;
+       USBINT = 0;
+       #endif
+
+       #if defined(USB_CAN_BE_BOTH)
+       OTGINT = 0;

        #endif
        #endif

-       
+

        #if defined(USB_CAN_BE_HOST)
        #if defined(USB_CAN_BE_HOST)

-       UHINT   = 0;
-       OTGINT  = 0;
+       UHINT  = 0;

        #endif
        #endif

-       
+

        #if defined(USB_CAN_BE_DEVICE)
        #if defined(USB_CAN_BE_DEVICE)

-       UDINT   = 0;
+       UDINT  = 0;

        #endif
 }
 
 ISR(USB_GEN_vect, ISR_BLOCK)
 {
        #if defined(USB_CAN_BE_DEVICE)
        #endif
 }
 
 ISR(USB_GEN_vect, ISR_BLOCK)
 {
        #if defined(USB_CAN_BE_DEVICE)

+       #if !defined(NO_SOF_EVENTS)
+       if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
+       {
+               USB_INT_Clear(USB_INT_SOFI);
+
+               EVENT_USB_Device_StartOfFrame();
+       }
+       #endif
+

        #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
        if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
        {
        #if defined(USB_SERIES_4_AVR) || defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR)
        if (USB_INT_HasOccurred(USB_INT_VBUS) && USB_INT_IsEnabled(USB_INT_VBUS))
        {


@@ -80,21 +95,21 @@ ISR(USB_GEN_vect, ISR_BLOCK)
                }
                else
                {
                }
                else
                {

-                       USB_DeviceState = DEVICE_STATE_Unattached;              
+                       USB_DeviceState = DEVICE_STATE_Unattached;

                        EVENT_USB_Device_Disconnect();
                }
        }
        #endif
 
                        EVENT_USB_Device_Disconnect();
                }
        }
        #endif
 

-       if (USB_INT_HasOccurred(USB_INT_SUSPEND) && USB_INT_IsEnabled(USB_INT_SUSPEND))
+       if (USB_INT_HasOccurred(USB_INT_SUSPI) && USB_INT_IsEnabled(USB_INT_SUSPI))

        {
        {

-               USB_INT_Clear(USB_INT_SUSPEND);
+               USB_INT_Clear(USB_INT_SUSPI);
+
+               USB_INT_Disable(USB_INT_SUSPI);
+               USB_INT_Enable(USB_INT_WAKEUPI);

 
 

-               USB_INT_Disable(USB_INT_SUSPEND);
-               USB_INT_Enable(USB_INT_WAKEUP);
-               

                USB_CLK_Freeze();
                USB_CLK_Freeze();

-               
+

                if (!(USB_Options & USB_OPT_MANUAL_PLL))
                  USB_PLL_Off();
 
                if (!(USB_Options & USB_OPT_MANUAL_PLL))
                  USB_PLL_Off();
 


@@ -107,7 +122,7 @@ ISR(USB_GEN_vect, ISR_BLOCK)
                #endif
        }
 
                #endif
        }
 

-       if (USB_INT_HasOccurred(USB_INT_WAKEUP) && USB_INT_IsEnabled(USB_INT_WAKEUP))
+       if (USB_INT_HasOccurred(USB_INT_WAKEUPI) && USB_INT_IsEnabled(USB_INT_WAKEUPI))

        {
                if (!(USB_Options & USB_OPT_MANUAL_PLL))
                {
        {
                if (!(USB_Options & USB_OPT_MANUAL_PLL))
                {


@@ -117,20 +132,23 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
                USB_CLK_Unfreeze();
 
 
                USB_CLK_Unfreeze();
 

-               USB_INT_Clear(USB_INT_WAKEUP);
+               USB_INT_Clear(USB_INT_WAKEUPI);
+
+               USB_INT_Disable(USB_INT_WAKEUPI);
+               USB_INT_Enable(USB_INT_SUSPI);
+
+               if (USB_ConfigurationNumber)
+                 USB_DeviceState = DEVICE_STATE_Configured;
+               else
+                 USB_DeviceState = (USB_Device_IsAddressSet()) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;

 
 

-               USB_INT_Disable(USB_INT_WAKEUP);
-               USB_INT_Enable(USB_INT_SUSPEND);
-               

                #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)
                #if defined(USB_SERIES_2_AVR) && !defined(NO_LIMITED_CONTROLLER_CONNECT)

-               USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Powered;

                EVENT_USB_Device_Connect();
                #else
                EVENT_USB_Device_Connect();
                #else

-               USB_DeviceState = (USB_ConfigurationNumber) ? DEVICE_STATE_Configured : DEVICE_STATE_Addressed;
-               EVENT_USB_Device_WakeUp();              
+               EVENT_USB_Device_WakeUp();

                #endif
        }
                #endif
        }

-   
+

        if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
        {
                USB_INT_Clear(USB_INT_EORSTI);
        if (USB_INT_HasOccurred(USB_INT_EORSTI) && USB_INT_IsEnabled(USB_INT_EORSTI))
        {
                USB_INT_Clear(USB_INT_EORSTI);


@@ -138,11 +156,9 @@ ISR(USB_GEN_vect, ISR_BLOCK)
                USB_DeviceState         = DEVICE_STATE_Default;
                USB_ConfigurationNumber = 0;
 
                USB_DeviceState         = DEVICE_STATE_Default;
                USB_ConfigurationNumber = 0;
 

-               USB_INT_Clear(USB_INT_SUSPEND);
-               USB_INT_Disable(USB_INT_SUSPEND);
-               USB_INT_Enable(USB_INT_WAKEUP);
-
-               Endpoint_ClearEndpoints();
+               USB_INT_Clear(USB_INT_SUSPI);
+               USB_INT_Disable(USB_INT_SUSPI);
+               USB_INT_Enable(USB_INT_WAKEUPI);

 
                Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
                                           ENDPOINT_DIR_OUT, USB_ControlEndpointSize,
 
                Endpoint_ConfigureEndpoint(ENDPOINT_CONTROLEP, EP_TYPE_CONTROL,
                                           ENDPOINT_DIR_OUT, USB_ControlEndpointSize,


@@ -154,27 +170,29 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
                EVENT_USB_Device_Reset();
        }
 
                EVENT_USB_Device_Reset();
        }

-       
-       if (USB_INT_HasOccurred(USB_INT_SOFI) && USB_INT_IsEnabled(USB_INT_SOFI))
+       #endif
+
+       #if defined(USB_CAN_BE_HOST)
+       #if !defined(NO_SOF_EVENTS)
+       if (USB_INT_HasOccurred(USB_INT_HSOFI) && USB_INT_IsEnabled(USB_INT_HSOFI))

        {
        {

-               USB_INT_Clear(USB_INT_SOFI);
-               
-               EVENT_USB_Device_StartOfFrame();
+               USB_INT_Clear(USB_INT_HSOFI);
+
+               EVENT_USB_Host_StartOfFrame();

        }
        #endif
        }
        #endif

-       
-       #if defined(USB_CAN_BE_HOST)
+

        if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
        {
                USB_INT_Clear(USB_INT_DDISCI);
                USB_INT_Clear(USB_INT_DCONNI);
                USB_INT_Disable(USB_INT_DDISCI);
        if (USB_INT_HasOccurred(USB_INT_DDISCI) && USB_INT_IsEnabled(USB_INT_DDISCI))
        {
                USB_INT_Clear(USB_INT_DDISCI);
                USB_INT_Clear(USB_INT_DCONNI);
                USB_INT_Disable(USB_INT_DDISCI);

-                       
+

                EVENT_USB_Host_DeviceUnattached();
 
                USB_ResetInterface();
        }
                EVENT_USB_Host_DeviceUnattached();
 
                USB_ResetInterface();
        }

-       
+

        if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
        {
                USB_INT_Clear(USB_INT_VBERRI);
        if (USB_INT_HasOccurred(USB_INT_VBERRI) && USB_INT_IsEnabled(USB_INT_VBERRI))
        {
                USB_INT_Clear(USB_INT_VBERRI);


@@ -192,18 +210,18 @@ ISR(USB_GEN_vect, ISR_BLOCK)
        {
                USB_INT_Clear(USB_INT_SRPI);
                USB_INT_Disable(USB_INT_SRPI);
        {
                USB_INT_Clear(USB_INT_SRPI);
                USB_INT_Disable(USB_INT_SRPI);

-       
+

                EVENT_USB_Host_DeviceAttached();
 
                USB_INT_Enable(USB_INT_DDISCI);
                EVENT_USB_Host_DeviceAttached();
 
                USB_INT_Enable(USB_INT_DDISCI);

-               
+

                USB_HostState = HOST_STATE_Powered;
        }
 
        if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
        {
                USB_INT_Clear(USB_INT_BCERRI);
                USB_HostState = HOST_STATE_Powered;
        }
 
        if (USB_INT_HasOccurred(USB_INT_BCERRI) && USB_INT_IsEnabled(USB_INT_BCERRI))
        {
                USB_INT_Clear(USB_INT_BCERRI);

-               
+

                EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
                EVENT_USB_Host_DeviceUnattached();
 
                EVENT_USB_Host_DeviceEnumerationFailed(HOST_ENUMERROR_NoDeviceDetected, 0);
                EVENT_USB_Host_DeviceUnattached();
 


@@ -213,7 +231,7 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
        #if defined(USB_CAN_BE_BOTH)
        if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))
 
        #if defined(USB_CAN_BE_BOTH)
        if (USB_INT_HasOccurred(USB_INT_IDTI) && USB_INT_IsEnabled(USB_INT_IDTI))

-       {               
+       {

                USB_INT_Clear(USB_INT_IDTI);
 
                if (USB_DeviceState != DEVICE_STATE_Unattached)
                USB_INT_Clear(USB_INT_IDTI);
 
                if (USB_DeviceState != DEVICE_STATE_Unattached)


@@ -221,11 +239,11 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 
                if (USB_HostState != HOST_STATE_Unattached)
                  EVENT_USB_Host_DeviceUnattached();
 
                if (USB_HostState != HOST_STATE_Unattached)
                  EVENT_USB_Host_DeviceUnattached();

-               
-               USB_CurrentMode = USB_GetUSBModeFromUID();
-               EVENT_USB_UIDChange();

 
 

+               USB_CurrentMode = USB_GetUSBModeFromUID();

                USB_ResetInterface();
                USB_ResetInterface();

+
+               EVENT_USB_UIDChange();

        }
        #endif
 }
        }
        #endif
 }


@@ -233,15 +251,19 @@ ISR(USB_GEN_vect, ISR_BLOCK)
 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 ISR(USB_COM_vect, ISR_BLOCK)
 {
 #if defined(INTERRUPT_CONTROL_ENDPOINT) && defined(USB_CAN_BE_DEVICE)
 ISR(USB_COM_vect, ISR_BLOCK)
 {

-       uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint(); 
+       uint8_t PrevSelectedEndpoint = Endpoint_GetCurrentEndpoint();

 
        Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
        USB_INT_Disable(USB_INT_RXSTPI);
 
        Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
        USB_INT_Disable(USB_INT_RXSTPI);

-       sei();

 
 

-       USB_USBTask();
+       NONATOMIC_BLOCK(NONATOMIC_FORCEOFF)
+       {
+               USB_Device_ProcessControlRequest();
+       }

 
 

+       Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);

        USB_INT_Enable(USB_INT_RXSTPI);
        Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 }
 #endif
        USB_INT_Enable(USB_INT_RXSTPI);
        Endpoint_SelectEndpoint(PrevSelectedEndpoint);
 }
 #endif

+