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Added new USB_Device_GetFrameNumber() and USB_Host_GetFrameNumber() functions to retrieve the current USB frame number.

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Added new USB_Host_EnableSOFEvents(), USB_Host_DisableSOFEvents() and EVENT_USB_Host_StartOfFrame() for the user application handling of USB Start of Frame events while in USB Host mode.

Changed over all demos, drivers and internal functions to use the current frame number over the Start of Frame flag where possible to free up the Start of Frame flag for interrupt use in the user application.
This commit is contained in:
Dean Camera 2010-09-05 07:11:53 +00:00
parent 0174d8ea70
commit 18cbd31605
12 changed files with 126 additions and 40 deletions
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8
LUFA/Drivers/USB/LowLevel/Device.h
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@ -140,6 +140,14 @@
};
/* Inline Functions: */
/** Returns the current USB frame number, when in device mode. Every millisecond the USB bus is active (i.e. enumerated to a host)
* the frame number is incremented by one.
*/
static inline uint16_t USB_Device_GetFrameNumber(void)
{
return UDFNUM;
}
/** Enables the device mode Start Of Frame events. When enabled, this causes the
* \ref EVENT_USB_Device_StartOfFrame() event to fire once per millisecond, synchronized to the USB bus,
* at the start of each USB frame when enumerated in device mode.