udisplay

模块
	udisplay_cli

函数
int32_t	udisplay_init (void)
int32_t	udisplay_show_rect (uint8_t *buf, uint32_t x, uint32_t y, uint32_t w, uint32_t h, bool rotate)
uint8_t *	udisplay_get_framebuffer (void)
int32_t	udisplay_show (void)
int32_t	udisplay_set_brightness (int32_t brightness)
int32_t	udisplay_get_brightness (void)
int32_t	udisplay_enable_backlight (void)
int32_t	udisplay_disable_backlight (void)

详细描述

函数说明

udisplay_disable_backlight()

int32_t udisplay_disable_backlight

(

void

)

udispaly disable backlight the framebuffer need get from drivers

@retrun bright value on success, otherwise will be failed.

udisplay_enable_backlight()

int32_t udisplay_enable_backlight

(

void

)

udispaly enable backlight the framebuffer need get from drivers

@retrun bright value on success, otherwise will be failed.

udisplay_get_brightness()

int32_t udisplay_get_brightness

(

void

)

udispaly get bright value before it need enable backlight the framebuffer need get from drivers

@retrun bright value on success, otherwise will be failed.

udisplay_get_framebuffer()

uint8_t* udisplay_get_framebuffer

(

void

)

udispaly get framebuffer from drivers.

@retrun buffer on success, otherwise will return NULL.

udisplay_init()

int32_t udisplay_init

(

void

)

Init the udisplay module.

@retrun 0 on success, otherwise will be failed.

udisplay_set_brightness()

int32_t udisplay_set_brightness

(

int32_t

brightness

)

udispaly set bright before it need enable backlight the framebuffer need get from drivers

参数

[in]

brightness

brightness value

@retrun 0 on success, otherwise will be failed.

udisplay_show()

int32_t udisplay_show

(

void

)

udispaly show (the buffer get from udisplay_get_framebuffer function).

@retrun 0 on success, otherwise will be failed.

udisplay_show_rect()

int32_t udisplay_show_rect	(	uint8_t *	buf,
		uint32_t	x,
		uint32_t	y,
		uint32_t	w,
		uint32_t	h,
		bool	rotate
	)

udisplay show rect function.

参数

[in]	buf	Graphic Framebuffer
[in]	x	x coordinate
[in]	y	y coordinate
[in]	w	Graphic Wide
[in]	h	Graphic High
[in]	rotate	Rotate (set true or false, The rotation angle is determined by the drivers)

返回

0 on success, negative error on failure.