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.

1 files changed, 4 insertions, 10 deletions

diff --git a/Demos/Device/LowLevel/Mouse/Mouse.c b/Demos/Device/LowLevel/Mouse/Mouse.c
index 48f04612b..aa95e9c0c 100644
--- a/Demos/Device/LowLevel/Mouse/Mouse.c
+++ b/Demos/Device/LowLevel/Mouse/Mouse.c
@@ -85,12 +85,6 @@ void SetupHardware(void)
 	LEDs_Init();

 	Buttons_Init();

 	USB_Init();

-	

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

-	OCR0A  = 0x7D;

-	TCCR0A = (1 << WGM01);

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

-	TIMSK0 = (1 << OCIE0A);

 }

 

 /** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and

@@ -129,6 +123,8 @@ void EVENT_USB_Device_ConfigurationChanged(void)
 	{

 		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

 	}

+

+	USB_Device_EnableSOFEvents();

 }

 

 /** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific

@@ -218,10 +214,8 @@ void EVENT_USB_Device_UnhandledControlRequest(void)
 	}

 }

 

-/** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and increments the

- *  scheduler elapsed idle period counter when the host has set an idle period.

- */

-ISR(TIMER0_COMPA_vect, ISR_BLOCK)

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

+void EVENT_USB_Device_StartOfFrame(void)

 {

 	/* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */

 	if (IdleMSRemaining)