Functions
void	osd_cfg_setup (osd_cfg_t *cfg)
	Config Object Initialization function.

err_t	osd_init (osd_t ctx, osd_cfg_t cfg)
	Initialization function.

void	osd_default_cfg (osd_t *ctx)
	Click Default Configuration function.

void	osd_write_byte (osd_t *ctx, uint8_t reg_address, uint8_t write_data)
	Write the byte of data.

uint8_t	osd_read_byte (osd_t *ctx, uint8_t reg_address)
	Read the byte of data function.

void	osd_hw_reset (osd_t *ctx)
	Hardware reset function.

void	osd_enable (osd_t *ctx)
	Enable OSD function.

void	osd_disable (osd_t *ctx)
	Disable OSD function.

void	osd_write_character (osd_t *ctx, uint8_t line_pos, uint8_t row_pos, uint8_t symbol)
	Write character by position function.

void	osd_insert_custom_char (osd_t *ctx, uint8_t chr_address, uint8_t custom_char)
	Write custom character function.

void	osd_clears_char_places (osd_t *ctx, uint8_t start_x, uint8_t start_y, uint8_t end_x, uint8_t end_y)
	Clears the character places function.

void	osd_set_ntsc (osd_t *ctx)
	Set NTSC video standard function.

void	osd_set_pal (osd_t *ctx)
	Set PAL video standard function.

void	osd_set_video_sync_mode (osd_t *ctx, uint8_t sync_mode)
	Set video sync mode function.

void	osd_enable_display_image (osd_t *ctx)
	Enable display of OSD image function.

void	osd_disable_display_image (osd_t *ctx)
	Disable display of OSD image function.

void	osd_vertical_sync_screen (osd_t *ctx, uint8_t vsync)
	Enable vertical synchronization of on-screen data function.

void	osd_soft_reset (osd_t *ctx)
	Software reset function.

void	osd_enable_video_buffer (osd_t *ctx)
	Enable video buffer.

void	osd_disable_video_buffer (osd_t *ctx)
	Disable video buffer.

void	osd_set_background_mode (osd_t *ctx, uint8_t b_mode)
	Set background mode.

void	osd_set_background_brightness (osd_t *ctx, uint8_t brightness)
	Set background brightness function.

void	osd_set_blinking_time (osd_t *ctx, uint8_t blinking_time)
	Set blinking time.

void	osd_set_blinking_duty_cycle (osd_t *ctx, uint8_t blink_duty_cycle)
	Set blinking duty cycle function.

void	osd_set_horizontal_offset (osd_t *ctx, uint8_t h_offset)
	Set horizontal offset function.

void	osd_set_vertical_offset (osd_t *ctx, uint8_t v_offset)
	Set vertical offset function.

void	osd_set_operation_mode (osd_t *ctx, uint8_t op_mode)
	Set operation mode function.

void	osd_set_local_background_control (osd_t *ctx, uint8_t lb_mode)
	Set local background control function.

void	osd_blinking_on (osd_t *ctx)
	Set blinking ON function.

void	osd_blinking_off (osd_t *ctx)
	Set blinking OFF function.

void	osd_invert_pixels_display (osd_t *ctx)
	Invert color of pixels on display function.

void	osd_normal_pixels_display (osd_t *ctx)
	Normal color of pixels on display function.

void	osd_clear_display_memory (osd_t *ctx)
	Clear display memory.

void	osd_write_chars (osd_t ctx, uint8_t symbol_buff, osd_write_chars_t *write_ctx)
	Write character function.

void	osd_write_nvm_character (osd_t *ctx, uint8_t v_chars, uint16_t v_index)
	Write NVM character function.

void	osd_set_character_color_white (osd_t *ctx)
	Set the white background of the character function.

void	osd_set_character_color_black (osd_t *ctx)
	Set the black background of the character function.

void	osd_character_blinking_on (osd_t *ctx)
	Set blinking ON function.

void	osd_character_blinking_off (osd_t *ctx)
	Set blinking OFF function.

void	osd_invert_pixels_character (osd_t *ctx)
	Invert color of character pixels on display.

void	osd_normal_pixels_character (osd_t *ctx)
	Normal color of character pixels on display.

void	osd_set_sharpness (osd_t *ctx, uint8_t s_data)
	Set sharpness function.

void	osd_enable_auto_black (osd_t *ctx)
	Enable automatic OSD black function.

void	osd_disable_auto_black (osd_t *ctx)
	Disable automatic OSD black function.

uint8_t	osd_get_status (osd_t *ctx)
	Get status data function.

uint8_t	osd_get_display_data_out (osd_t *ctx)
	Get display memory data out function.

uint8_t	osd_get_character_data_out (osd_t *ctx)
	Get character memory data out function.

uint8_t	osd_get_los (osd_t *ctx)
	Get loss of sync status function.

uint8_t	osd_get_vsync (osd_t *ctx)
	Get vertical sync status function.

uint8_t	osd_get_hsync (osd_t *ctx)
	Get horizontal sync status function.

Detailed Description

Function Documentation

◆ osd_blinking_off()

void osd_blinking_off ( osd_t * ctx )

Set blinking OFF function.

Parameters

ctx	Click object

This function sets blinking OFF by clear to '0' [ bit 4 ] states to the targeted OSD_DMM_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_blinking_on()

void osd_blinking_on ( osd_t * ctx )

Set blinking ON function.

Parameters

ctx	Click object

This function set blinking ON by set to '1' [ bit 4 ] states to the targeted OSD_DMM_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_cfg_setup()

void osd_cfg_setup ( osd_cfg_t * cfg )

Config Object Initialization function.

Parameters

cfg	Click configuration structure.

This function initializes click configuration structure to init state.

Note: All used pins will be set to unconnected state.

◆ osd_character_blinking_off()

void osd_character_blinking_off ( osd_t * ctx )

Set blinking OFF function.

Parameters

ctx	Click object.

This function sets blinking OFF.

◆ osd_character_blinking_on()

void osd_character_blinking_on ( osd_t * ctx )

Set blinking ON function.

Parameters

ctx	Click object.

This function sets blinking ON by set to '1' [ bit 6 ] states to the targeted OSD_DMDI_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_clear_display_memory()

void osd_clear_display_memory ( osd_t * ctx )

Clear display memory.

Parameters

ctx	Click object

This function clears display memory.

Note

This bit is automatically cleared after the operation is completed.
This operation is automatically performed:
- 1) On power-up;
- 2) Immediately following the rising edge of RESET;
- 3) Immediately following the rising edge of CS;
Delay is 1 ms.

◆ osd_clears_char_places()

void osd_clears_char_places	(	osd_t *	ctx,
		uint8_t	start_x,
		uint8_t	start_y,
		uint8_t	end_x,
		uint8_t	end_y )

Clears the character places function.

Parameters

ctx	Click object.
start_line_pos	initial line position value
start_row_pos	initial row position value
end_line_pos	last line position value
end_row_pos	last row position value

The function clears the character by position to the targeted register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_default_cfg()

void osd_default_cfg ( osd_t * ctx )

Click Default Configuration function.

Parameters

ctx	Click object.

This function executes default configuration for OSD click.

◆ osd_disable()

void osd_disable ( osd_t * ctx )

Disable OSD function.

Parameters

ctx	Click object.

This function disables OSD by clear to '0' [ bit 3 ] states to the targeted OSD_VM0_REG register address.

◆ osd_disable_auto_black()

void osd_disable_auto_black ( osd_t * ctx )

Disable automatic OSD black function.

Parameters

ctx	Click object.

This function disables automatic OSD black by set to '1' [ bit 4 ] states to the targeted OSD_OSDBL_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_disable_display_image()

void osd_disable_display_image ( osd_t * ctx )

Disable display of OSD image function.

Parameters

ctx	Click object.

This function disables display of OSD image by clear to '0' [ bit 3 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_disable_video_buffer()

void osd_disable_video_buffer ( osd_t * ctx )

Disable video buffer.

Parameters

ctx	Click object.

This function disables video buffer by set to '1' [ bit 0 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_enable()

void osd_enable ( osd_t * ctx )

Enable OSD function.

Parameters

ctx	Click object.

This function enables OSD by set to '1' [ bit 3 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_enable_auto_black()

void osd_enable_auto_black ( osd_t * ctx )

Enable automatic OSD black function.

Parameters

ctx	Click object.

This function enables automatic OSD black.

◆ osd_enable_display_image()

void osd_enable_display_image ( osd_t * ctx )

Enable display of OSD image function.

Parameters

ctx	Click object.

This function enables display of OSD image by set to '1' [ bit 3 ] states to the targeted _OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_enable_video_buffer()

void osd_enable_video_buffer ( osd_t * ctx )

Enable video buffer.

Parameters

ctx	Click object.

This function enables video buffer by clear to '0' [ bit 0 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_get_character_data_out()

uint8_t osd_get_character_data_out ( osd_t * ctx )

Get character memory data out function.

Parameters

ctx	Click object.

Returns: Status data

This function gets character memory data out by read from the targeted OSD_CMDO_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

Status data:
- [ bit 7:6 ] : Leftmost pixel. 00 = Black, 10 = White, 01 or 11 = Transparent;
- [ bit 5:4 ] : Left center pixel. 00 = Black, 10 = White, 01 or 11 = Transparent;
- [ bit 3:2 ] : Right center pixel. 00 = Black, 10 = White, 01 or 11 = Transparent:
- [ bit 1:0 ] : Rightmost pixel. 00 = Black, 10 = White, 01 or 11 = Transparent;

◆ osd_get_display_data_out()

uint8_t osd_get_display_data_out ( osd_t * ctx )

Get display memory data out function.

Parameters

ctx	Click object.

Returns: Status data

This function gets display memory data out by read from the targeted OSD_DMDO_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

status data:
- [ bit 7 ] : Local Background Control:
            - 0 : Sets the background pixels of the character to the video input
                 (VIN) when in external sync mode;
            - 1 : Sets the background pixels of the character to the background
                  mode brightness level defined ( external or internal sync mode );
- [ bit 6 ] : Blink:
            - 0 : Blinking off;
            - 1 : Blinking on;
- [ bit 5 ] : Invert:
            - 0 : Normal ( white pixels display white, black pixels display black );
            - 1 : Invert ( white pixels display black, black pixels display white );
- [ bit 4:0 ] : Don't Care;

◆ osd_get_hsync()

uint8_t osd_get_hsync ( osd_t * ctx )

Get horizontal sync status function.

Parameters

ctx	Click object.

Returns: HSYNC state

This function gets horizontal sync status by return status of PWM pin of OSD Click board.

Note

HSYNC state values:
- 0 : not active
- 1 : active

◆ osd_get_los()

uint8_t osd_get_los ( osd_t * ctx )

Get loss of sync status function.

Parameters

ctx	Click object.

Returns: LOS state

This function gets loss of sync status by return status of AN pin of OSD Click board.

Note

LOS state values:
- 0 : not active
- 1 : active

◆ osd_get_status()

uint8_t osd_get_status ( osd_t * ctx )

Get status data function.

Parameters

ctx	Click object.

Returns: Status data

This function gets status data by read from the targeted OSD_STAT_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

Status data:
- [ bit 7 ] : Don't Care;
- [ bit 6 ] : Reset Mode:
            - 0 : Clear when power-up reset mode is complete;
            - 1 : Set when in power-up reset mode;
- [ bit 5 ] : Character Memory Status:
            - 0 : Available to be written to or read from;
            - 1 : Unavailable to be written to or read from;
- [ bit 4 ] : VSYNC Output Level:
            - 0 : Active during vertical sync time;
            - 1 : Inactive otherwise;
- [ bit 3 ] : HSYNC Output Level:
            - 0 : Active during horizontal sync time;
            - 1 : Inactive otherwise;
- [ bit 2 ] : Loss-of-Sync ( LOS ):
            - 0 : Sync Active. Asserted after 32 consecutive input video lines;
            - 1 : No Sync. Asserted after 32 consecutive missing input video lines;
- [ bit 1 ] : NTSC:
           - 0 : NTSC signal is not detected at VIN;
            - 1 : NTSC signal is detected at VIN;
- [ bit 0 ] : PAL:
            - 0 : PAL signal is not detected at VIN;
            - 1 : PAL signal is detected at VIN;

◆ osd_get_vsync()

uint8_t osd_get_vsync ( osd_t * ctx )

Get vertical sync status function.

Parameters

ctx	Click object.

Returns: VSYNC state

This function gets vertical sync status by return status of INT pin of OSD Click board.

Note

VSYNC state values:
- 0 : not active
- 1 : active

◆ osd_hw_reset()

void osd_hw_reset ( osd_t * ctx )

Hardware reset function.

Parameters

ctx	Click object.

This function Hardware reset - resets the MAX7456 single-channel monochrome OSD with integrated EEPROM memor by cleared to '0' RST state pin, wait for 10 ms, set to '1' RST state pin and wait for another 10 ms.

Note

Delay is 20 ms.

◆ osd_init()

err_t osd_init	(	osd_t *	ctx,
		osd_cfg_t *	cfg )

Initialization function.

Parameters

osd	Click object.
cfg	Click configuration structure.

This function initializes all necessary pins and peripherals used for this click.

◆ osd_insert_custom_char()

void osd_insert_custom_char	(	osd_t *	ctx,
		uint8_t	chr_address,
		uint8_t	custom_char )

Write custom character function.

Parameters

ctx	Click object.
chr_address	8-bit character register address
custom_char	8-bit value of character

This function writes custom character by position to the targeted register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_invert_pixels_character()

void osd_invert_pixels_character ( osd_t * ctx )

Invert color of character pixels on display.

Parameters

ctx	Click object.

This function sets invert color of character pixels on display.

◆ osd_invert_pixels_display()

void osd_invert_pixels_display ( osd_t * ctx )

Invert color of pixels on display function.

Parameters

ctx	Click object

This function inverts color of pixels on display.

◆ osd_normal_pixels_character()

void osd_normal_pixels_character ( osd_t * ctx )

Normal color of character pixels on display.

Parameters

ctx	Click object.

This function sets normal color of character pixels on display.

◆ osd_normal_pixels_display()

void osd_normal_pixels_display ( osd_t * ctx )

Normal color of pixels on display function.

Parameters

ctx	Click object

This function normal color of pixels on display.

◆ osd_read_byte()

uint8_t osd_read_byte	(	osd_t *	ctx,
		uint8_t	reg_address )

Read the byte of data function.

Parameters

ctx	Click object.
reg_address	8-bit register address

Returns: 8-bit read data

This function rides 8-bit of data from the targeted 8-bit register address.

◆ osd_set_background_brightness()

void osd_set_background_brightness	(	osd_t *	ctx,
		uint8_t	brightness )

Set background brightness function.

Parameters

ctx	Click object.
brightness

This function sets background brightness.

Note

Background Mode Brightness:
- 0 : 0%;
- 1 : 7%;
- 2 : 14%;
- 3 : 21%;
- 4 : 28%;
- 5 : 35%;
- 6 : 42%;
- 7 : 49%;

◆ osd_set_background_mode()

void osd_set_background_mode	(	osd_t *	ctx,
		uint8_t	b_mode )

Set background mode.

Parameters

ctx	Click object.
b_mode

This function sets background mode.

Note

In internal sync mode, the background mode bit is set to '1'.
b_mode values:
- 0 : Sets the state of each character background;
- 1 : Sets all displayed background pixels to gray;

◆ osd_set_blinking_duty_cycle()

void osd_set_blinking_duty_cycle	(	osd_t *	ctx,
		uint8_t	blink_duty_cycle )

Set blinking duty cycle function.

Parameters

ctx	Click object.
blink_duty_cycle

This function sets blinking duty cycle by write blink_duty_cycle value to the targeted OSD_VM1_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

Blinking Duty Cycle ( On : Off ):
- 0 : Blinking Time : Blinking Time;
- 1 : Blinking Time : ( 2 x Blinking Time );
- 2 : Blinking Time : ( 3 x Blinking Time );
- 3 : ( 3 x Blinking Time ) : Blinking Time;

◆ osd_set_blinking_time()

void osd_set_blinking_time	(	osd_t *	ctx,
		uint8_t	blinking_time )

Set blinking time.

Parameters

ctx	Click object.
blinking_time	Blinking time to be set

This function sets blinking time of the click.

Note

Blinking Time:
- 0 : 2 fields ( 33 ms in NTSC mode, 40 ms in PAL mode );
- 1 : 4 fields ( 67 ms in NTSC mode, 80 ms in PAL mode );
- 2 : 6 fields ( 100 ms in NTSC mode, 120 ms in PAL mode );
- 3 : 8 fields ( 133 ms in NTSC mode, 160 ms in PAL mode );

◆ osd_set_character_color_black()

void osd_set_character_color_black ( osd_t * ctx )

Set the black background of the character function.

Parameters

ctx	Click object.

This function sets the black background of the character

◆ osd_set_character_color_white()

void osd_set_character_color_white ( osd_t * ctx )

Set the white background of the character function.

Parameters

ctx	Click object.

This function sets the white background of the character

◆ osd_set_horizontal_offset()

void osd_set_horizontal_offset	(	osd_t *	ctx,
		uint8_t	h_offset )

Set horizontal offset function.

Parameters

ctx	Click object.
h_offset	Horisontal possition offset

This function sets horizontal offset.

Note

Horizontal Position Offset:
-  0 : Farthest left ( -32 pixels );
- .
- .
- .
- 32 : No horizontal offset;
- .
- .
- .
- 63 :  Farthest right ( +31 pixels );

◆ osd_set_local_background_control()

void osd_set_local_background_control	(	osd_t *	ctx,
		uint8_t	lb_mode )

Set local background control function.

Parameters

ctx	Click object
lb_mode	Local background control to be set

This function sets local background control.

Note

Local Background Control:
- 0 : Sets the background pixels of the character to the video input (VIN) when in external sync mode;
- 1 : Sets the background pixels of the character to the background mode brightness level defined status ( external or internal sync mode );

◆ osd_set_ntsc()

void osd_set_ntsc ( osd_t * ctx )

Set NTSC video standard function.

Parameters

ctx	Click object.

This function sets NTSC video standard by clear to '0' [ bit 6 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_set_operation_mode()

void osd_set_operation_mode	(	osd_t *	ctx,
		uint8_t	op_mode )

Set operation mode function.

Parameters

ctx	Click object.
op_mode	Operation mode to be set.

This function sets operation mode.

Note

Operation Mode Selection:
- 0 : 16-bit operation mode;
    - The 16-bit operation mode increases the speed at which the display memory can be updated;
- 1 : 8-bit operation mode:
    - The 8-bit operation mode provides maximum flexibility when writing characters to the display memory;

◆ osd_set_pal()

void osd_set_pal ( osd_t * ctx )

Set PAL video standard function.

Parameters

ctx	Click object.

This function sets PAL video standard by set to '1' [ bit 6 ] states to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_set_sharpness()

void osd_set_sharpness	(	osd_t *	ctx,
		uint8_t	s_data )

Set sharpness function.

Parameters

ctx	Click object.
s_data	Data to be written to OSD_OSDM_REG register

This function sets sharpness by write s_data value to the targeted OSD_OSDM_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

OSD Rise and Fall Time : OSD Insertion Mux Switching Time
- 0 :  20 ns and  30 ns;
- 1 :  30 ns and  35 ns;
- 2 :  35 ns and  50 ns;
- 3 :  60 ns and  75 ns;
- 4 :  80 ns and 100 ns;
- 5 : 110 ns and 120 ns;

◆ osd_set_vertical_offset()

void osd_set_vertical_offset	(	osd_t *	ctx,
		uint8_t	v_offset )

Set vertical offset function.

Parameters

ctx	Click object.
v_offset	Vertical possition offset

This function sets horizontal offset

Note

Vertical Position Offset:
-  0 : Farthest up ( +16 pixels );
- .
- .
- .
- 16 : No vertical offset;
- .
- .
- .
- 31 : Farthest down ( -15 pixels );

◆ osd_set_video_sync_mode()

void osd_set_video_sync_mode	(	osd_t *	ctx,
		uint8_t	sync_mode )

Set video sync mode function.

Parameters

ctx	Click object.
sync_mode	Sync Mode to be set.

This function sets the video sync mode: autosync, external or internal by write sync_mode value to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

sync mode values:
- 0 : Autosync select (external sync when LOS = 0 and internal sync when LOS = 1);
- 1 : External;
- 2 : Internal;

◆ osd_soft_reset()

void osd_soft_reset ( osd_t * ctx )

Software reset function.

Parameters

ctx	Click object.

This function performs software reset OSD click by set to '1' [ bit 1 ] states to the to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory.

Note

This bit is automatically cleared to '0' by hardware.
Delay is 1 ms.

◆ osd_vertical_sync_screen()

void osd_vertical_sync_screen	(	osd_t *	ctx,
		uint8_t	vsync )

Enable vertical synchronization of on-screen data function.

Parameters

ctx	Click object.
vsync	vsync options

This function enables vertical synchronization of on-screen data by write vsync value to the targeted OSD_VM0_REG register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

vsync values:
- 0 : Enable on-screen display immediately;
- 1 : Enable on-screen display at the next VSYNC;

◆ osd_write_byte()

void osd_write_byte	(	osd_t *	ctx,
		uint8_t	reg_address,
		uint8_t	write_data )

Write the byte of data.

Parameters

ctx	Click object.
reg_address	8-bit register address
write_data	Byte of data to write

This function writes the byte of data to the targeted 8-bit register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_write_character()

void osd_write_character	(	osd_t *	ctx,
		uint8_t	line_pos,
		uint8_t	row_pos,
		uint8_t	symbol )

Write character by position function.

Parameters

ctx	Click object.
line_pos	8-bit value of line position
row_pos	8-bit value of row position
symbol	8-bit value of character

This function writes character by position to the targeted register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

◆ osd_write_chars()

void osd_write_chars	(	osd_t *	ctx,
		uint8_t *	symbol_buff,
		osd_write_chars_t *	write_ctx )

Write character function.

Parameters

ctx	Click object
symbol_buff	Pointer to the memory location of symbolBuff
write_ctx	Write context structure for this function

This function writes array of character by position to the targeted register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Note

write_ctx->flags values:
1 : blink;
2 : invert;

◆ osd_write_nvm_character()

void osd_write_nvm_character	(	osd_t *	ctx,
		uint8_t	v_chars,
		uint16_t	v_index )

Write NVM character function.

Parameters

ctx	Click object
v_chars	8-bit character value
v_index	8-bit index value

This function writes NVM character to the targeted register address of MAX7456 single-channel monochrome OSD with integrated EEPROM memory on OSD click board.

Functions

Detailed Description

Function Documentation

◆ osd_blinking_off()

◆ osd_blinking_on()

◆ osd_cfg_setup()

◆ osd_character_blinking_off()

◆ osd_character_blinking_on()

◆ osd_clear_display_memory()

◆ osd_clears_char_places()

◆ osd_default_cfg()

◆ osd_disable()

◆ osd_disable_auto_black()

◆ osd_disable_display_image()

◆ osd_disable_video_buffer()

◆ osd_enable()

◆ osd_enable_auto_black()

◆ osd_enable_display_image()

◆ osd_enable_video_buffer()

◆ osd_get_character_data_out()

◆ osd_get_display_data_out()

◆ osd_get_hsync()

◆ osd_get_los()

◆ osd_get_status()

◆ osd_get_vsync()

◆ osd_hw_reset()

◆ osd_init()

◆ osd_insert_custom_char()

◆ osd_invert_pixels_character()

◆ osd_invert_pixels_display()

◆ osd_normal_pixels_character()

◆ osd_normal_pixels_display()

◆ osd_read_byte()

◆ osd_set_background_brightness()

◆ osd_set_background_mode()

◆ osd_set_blinking_duty_cycle()

◆ osd_set_blinking_time()

◆ osd_set_character_color_black()

◆ osd_set_character_color_white()

◆ osd_set_horizontal_offset()

◆ osd_set_local_background_control()

◆ osd_set_ntsc()

◆ osd_set_operation_mode()

◆ osd_set_pal()

◆ osd_set_sharpness()

◆ osd_set_vertical_offset()

◆ osd_set_video_sync_mode()

◆ osd_soft_reset()

◆ osd_vertical_sync_screen()

◆ osd_write_byte()

◆ osd_write_character()

◆ osd_write_chars()

◆ osd_write_nvm_character()