Frame draw timing. More...

Include dependency graph for frame_timer.h:

Data Structures
struct	display_frame_usb_phase_t
	Display frame counter and USB frame counter values at frame draw time. More...

Macros
#define	MS_PER_FRAME (1000/DEVICE_FPS)
	Time interval between frame displays expressed in milliseconds.

Functions
Frame timing tracking
void	new_sof_received (const uint16_t usb_frame_counter)
	Function to be called upon receival of a USB SOF token with the new USB frame counter value.

bool	get_display_frame_usb_phase (struct display_frame_usb_phase_t *usb_phase)
	Latest display frame counter phase. More...

bool	correct_display_frame_counter (const int16_t frame_diff)
	Correct the display frame counter. More...

void	correct_display_frame_phase (const int8_t ms_shift)
	Shift the frame display phase with respect to the USB frame counter. More...

Frame draw triggering
void	init_frame_timer ()
	Initialise the frame timer.

bool	should_draw_frame ()
	Whether a new frame should be displayed or if the device is allowed to idle.

void	clear_draw_frame ()
	Acknowledge that a frame has been drawn.

Detailed Description

Frame draw timing.

Timer to trigger drawing of a new frame DEVICE_FPS times per second.

Data Structures