ssd_1306.c File Reference

Implementation of ssd_1306 Driver. More...

#include <stdbool.h>
#include "ssd_1306.h"
#include "no_os_error.h"
#include "no_os_spi.h"
#include "no_os_i2c.h"
#include "no_os_delay.h"
#include <string.h>

Include dependency graph for ssd_1306.c:

Macros
#define	SSD1306_RST_ON   0U
#define	SSD1306_RST_OFF   1U
#define	SSD1306_DC_DATA   1U
#define	SSD1306_DC_CMD   0U
#define	SSD1306_DISP_ON   0xAFU
#define	SSD1306_DISP_OFF   0xAEU
#define	SSD1306_CHARSZ   8U

Functions
int32_t	ssd1306_buffer_transmit (ssd_1306_extra *extra_param, uint8_t *command, int length, enum transmit_type is_data)
int32_t	ssd_1306_init (struct display_dev *device)
	Initializes ssd_1306 for display screening.
int32_t	ssd_1306_display_on_off (struct display_dev *device, uint8_t on_off)
	ssd_1306 turns display on/off.
int32_t	ssd_1306_move_cursor (struct display_dev *device, uint8_t row, uint8_t column)
	Moves cursor to desired row/column.
int32_t	ssd_1306_print_ascii (struct display_dev *device, uint8_t ascii, uint8_t row, uint8_t column)
	Prints character at selected position.
int32_t	ssd_1306_remove (struct display_dev *device)
	Removes resources allocated by device.
int32_t	ssd_1306_print_buffer (struct display_dev *device, char *buffer)
	Print entire screen buffer.

Variables
const struct display_controller_ops	ssd1306_ops
const uint8_t	no_os_chr_8x8 [128][8]

Detailed Description

Implementation of ssd_1306 Driver.

Author

Andrei Porumb (andre.nosp@m.i.po.nosp@m.rumb@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2021(c) Analog Devices, Inc.

SPDX-License-Identifier: BSD-3-Clause

Macro Definition Documentation

SSD1306_CHARSZ

#define SSD1306_CHARSZ   8U

SSD1306_DC_CMD

#define SSD1306_DC_CMD   0U

SSD1306_DC_DATA

#define SSD1306_DC_DATA   1U

SSD1306_DISP_OFF

#define SSD1306_DISP_OFF   0xAEU

SSD1306_DISP_ON

#define SSD1306_DISP_ON   0xAFU

SSD1306_RST_OFF

#define SSD1306_RST_OFF   1U

SSD1306_RST_ON

#define SSD1306_RST_ON   0U

Function Documentation

ssd1306_buffer_transmit()

int32_t ssd1306_buffer_transmit	(	ssd_1306_extra *	extra_param,
		uint8_t *	command,
		int	length,
		enum transmit_type	is_data )

ssd_1306_display_on_off()

int32_t ssd_1306_display_on_off	(	struct display_dev *	device,
		uint8_t	on_off )

ssd_1306 turns display on/off.

Parameters

device	- The device structure
on_off	- Display state

Returns

Returns 0 in case of success or negative error code otherwise.

ssd_1306_init()

int32_t ssd_1306_init

(

struct display_dev *

device

)

Initializes ssd_1306 for display screening.

Parameters

device

- The device structure.

Returns

Returns 0 in case of success or negative error code otherwise.

ssd_1306_move_cursor()

int32_t ssd_1306_move_cursor	(	struct display_dev *	device,
		uint8_t	row,
		uint8_t	column )

Moves cursor to desired row/column.

Parameters

device	- The device structure
row	- row
column	- column

Returns

Returns 0 in case of success or negative error code otherwise.

ssd_1306_print_ascii()

int32_t ssd_1306_print_ascii	(	struct display_dev *	device,
		uint8_t	ascii,
		uint8_t	row,
		uint8_t	column )

Prints character at selected position.

Parameters

device	- The device structure.
ascii	- corresponding number to ascii table
row	- row
column	- column

Returns

Returns 0 in case of success or negative error code otherwise.

ssd_1306_print_buffer()

int32_t ssd_1306_print_buffer	(	struct display_dev *	device,
		char *	buffer )

Print entire screen buffer.

Parameters

device	- The device structure.
buffer	- The buffer to be printed.

Returns

Returns 0 in case of success or negative error code otherwise.

ssd_1306_remove()

int32_t ssd_1306_remove

(

struct display_dev *

device

)

Removes resources allocated by device.

Parameters

device

- The device structure.

Returns

Returns 0 in case of success or negative error code otherwise.

Variable Documentation

no_os_chr_8x8

const uint8_t no_os_chr_8x8[128][8]

extern

ssd1306_ops

const struct display_controller_ops ssd1306_ops

Initial value:

= {
    .init = &ssd_1306_init,
    .display_on_off = &ssd_1306_display_on_off,
    .move_cursor = &ssd_1306_move_cursor,
    .print_char = &ssd_1306_print_ascii,
    .remove = &ssd_1306_remove,
    .print_buffer = &ssd_1306_print_buffer
}