Added new EVENT_USB_Device_StartOfFrame() event, controlled by the new USB_Device_EnableSOFEvents() and USB_Device_DisableSOFEvents() macros to give bus-synchronised millisecond interrupts when in USB device mode.

git-svn-id: http://lufa-lib.googlecode.com/svn/trunk@740 d5102386-fcda-11dd-9fdb-3debd5008f28

2 files changed, 5 insertions, 8 deletions

diff --git a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
index e2199904..5ac5b8d8 100644
--- a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
+++ b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.c
@@ -112,12 +112,6 @@ void SetupHardware()
 	Joystick_Init();

 	LEDs_Init();

 	USB_Init();

-

-	/* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */

-	OCR0A  = ((F_CPU / 64) / 1000);

-	TCCR0A = (1 << WGM01);

-	TCCR0B = ((1 << CS01) | (1 << CS00));

-	TIMSK0 = (1 << OCIE0A);

 }

 

 /** Event handler for the library USB Connection event. */

@@ -142,6 +136,8 @@ void EVENT_USB_Device_ConfigurationChanged(void)
 	

 	if (!(HID_Device_ConfigureEndpoints(&Mouse_HID_Interface)))

 	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

+

+	USB_Device_EnableSOFEvents();

 }

 

 /** Event handler for the library USB Unhandled Control Request event. */

@@ -151,8 +147,8 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
 	HID_Device_ProcessControlRequest(&Mouse_HID_Interface);

 }

 

-/** ISR to keep track of each millisecond interrupt, for determining the HID class idle period remaining when set. */

-ISR(TIMER0_COMPA_vect, ISR_BLOCK)

+/** Event handler for the USB device Start Of Frame event. */

+void EVENT_USB_Device_StartOfFrame(void)

 {

 	HID_Device_MillisecondElapsed(&Keyboard_HID_Interface);

 	HID_Device_MillisecondElapsed(&Mouse_HID_Interface);

diff --git a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.h b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.h
index 29756415..1f47c3e4 100644
--- a/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.h
+++ b/Demos/Device/ClassDriver/KeyboardMouse/KeyboardMouse.h
@@ -89,6 +89,7 @@
 		void EVENT_USB_Device_Disconnect(void);

 		void EVENT_USB_Device_ConfigurationChanged(void);

 		void EVENT_USB_Device_UnhandledControlRequest(void);

+		void EVENT_USB_Device_StartOfFrame(void);

 

 		bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,

                                                  void* ReportData, uint16_t* ReportSize);