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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.

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This commit is contained in:
Dean Camera 2009-08-16 08:51:54 +00:00
parent 25ddbb9e3b
commit b71ff7c8cd
23 changed files with 83 additions and 75 deletions
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14
Demos/Device/LowLevel/Mouse/Mouse.c
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@ -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)