From 32f0f605efa293430a47d60bb857695ff6937d21 Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Thu, 14 May 2009 10:07:08 +0000
Subject: 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.

---
 Demos/Device/MassStorage/MassStorage.c   | 31 -------------------------------
 Demos/Device/MassStorage/MassStorage.h   |  3 ---
 Demos/Device/MassStorage/MassStorage.txt |  5 +++++
 Demos/Device/MassStorage/makefile        |  1 +
 4 files changed, 6 insertions(+), 34 deletions(-)

(limited to 'Demos/Device/MassStorage')

diff --git a/Demos/Device/MassStorage/MassStorage.c b/Demos/Device/MassStorage/MassStorage.c
index b24018a10..c50ca3dde 100644
--- a/Demos/Device/MassStorage/MassStorage.c
+++ b/Demos/Device/MassStorage/MassStorage.c
@@ -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);
-	}
-}
diff --git a/Demos/Device/MassStorage/MassStorage.h b/Demos/Device/MassStorage/MassStorage.h
index 17acca6b7..f0baf1461 100644
--- a/Demos/Device/MassStorage/MassStorage.h
+++ b/Demos/Device/MassStorage/MassStorage.h
@@ -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);
 
diff --git a/Demos/Device/MassStorage/MassStorage.txt b/Demos/Device/MassStorage/MassStorage.txt
index 9db731c31..1d06cb66d 100644
--- a/Demos/Device/MassStorage/MassStorage.txt
+++ b/Demos/Device/MassStorage/MassStorage.txt
@@ -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.
diff --git a/Demos/Device/MassStorage/makefile b/Demos/Device/MassStorage/makefile
index 3115aae16..65a22c6a3 100644
--- a/Demos/Device/MassStorage/makefile
+++ b/Demos/Device/MassStorage/makefile
@@ -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
-- 
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