From b71ff7c8cd68209a74c8690f4d190cc634ef8fb3 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Sun, 16 Aug 2009 08:51:54 +0000 Subject: 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. --- Demos/Device/ClassDriver/Keyboard/Keyboard.c | 12 ++++-------- Demos/Device/ClassDriver/Keyboard/Keyboard.h | 1 + 2 files changed, 5 insertions(+), 8 deletions(-) (limited to 'Demos/Device/ClassDriver/Keyboard') diff --git a/Demos/Device/ClassDriver/Keyboard/Keyboard.c b/Demos/Device/ClassDriver/Keyboard/Keyboard.c index 6f0bd1d1a..e609d7acb 100644 --- a/Demos/Device/ClassDriver/Keyboard/Keyboard.c +++ b/Demos/Device/ClassDriver/Keyboard/Keyboard.c @@ -89,12 +89,6 @@ void SetupHardware() LEDs_Init(); Buttons_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. */ @@ -116,6 +110,8 @@ void EVENT_USB_Device_ConfigurationChanged(void) if (!(HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface))) LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + USB_Device_EnableSOFEvents(); } /** Event handler for the library USB Unhandled Control Request event. */ @@ -124,8 +120,8 @@ void EVENT_USB_Device_UnhandledControlRequest(void) HID_Device_ProcessControlRequest(&Keyboard_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); } diff --git a/Demos/Device/ClassDriver/Keyboard/Keyboard.h b/Demos/Device/ClassDriver/Keyboard/Keyboard.h index 0f7176ce0..ebd83d5c5 100644 --- a/Demos/Device/ClassDriver/Keyboard/Keyboard.h +++ b/Demos/Device/ClassDriver/Keyboard/Keyboard.h @@ -85,6 +85,7 @@ 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); -- cgit v1.2.3