ef4057.h File Reference

Header file for the EF4057 seven-segment display module driver. More...

Go to the source code of this file.

Macros
#define	EF4057_ADDR   0x70
#define	EF4057_DIGITS   4
#define	EF4057_BRIGHTNES   6

Functions
void	ef4057_send_command (uint8_t command)
	Send a command. More...
void	ef4057_send_data (uint8_t dest, uint8_t data)
	Send a data byte. More...
void	ef4057_clear_digit (uint8_t digit)
	Clear a digit. More...
void	ef4057_set_digit (uint8_t digit, uint8_t number)
	Set a digit. More...
void	ef4057_init (void)
	Initialize display. More...
void	ef4057_display_on (void)
	Turn display on. More...
void	ef4057_display_off (void)
	Turn display off. More...
void	ef4057_put_number (int number)
	Display a number on the display. More...

Detailed Description

Header file for the EF4057 seven-segment display module driver.

The EF4057 module is a seven segment-display display that uses the HT16K33 16*8 LED controller driver. The digits of the display are controlled by the following display RAM addresses:

Digit	DRAM Address
1	0
2	2
3	6
4	8

Author

Wolfgang Neff

Version

2.0

Date

2017-12-29

History

Created: 2017-08-03
Modified: 2017-12-29

Macro Definition Documentation

EF4057_ADDR

#define EF4057_ADDR   0x70

EF4057_BRIGHTNES

#define EF4057_BRIGHTNES   6

EF4057_DIGITS

#define EF4057_DIGITS   4

Function Documentation

ef4057_clear_digit()

void ef4057_clear_digit

(

uint8_t

digit

)

Clear a digit.

Clears the specified digit on the display. The digits are numbered from left to right starting with 1. I. e. digit 1 is the left most 4 is the right most digit.

Parameters

digit

The digit to be cleared.

ef4057_display_off()

void ef4057_display_off

(

void

)

Turn display off.

ef4057_display_on()

void ef4057_display_on

(

void

)

Turn display on.

ef4057_init()

void ef4057_init

(

void

)

Initialize display.

ef4057_put_number()

void ef4057_put_number

(

int

number

)

Display a number on the display.

Parameters

number

The number to be displayed.

ef4057_send_command()

void ef4057_send_command

(

uint8_t

command

)

Send a command.

Sends a command to the display controller.

Parameters

command

The command to be sent.

ef4057_send_data()

void ef4057_send_data	(	uint8_t	dest,
		uint8_t	data
	)

Send a data byte.

Sends a data byte to the specified DRAM address.

Parameters

dest	The address of the DRAM destination.
data	The byte to be sent.

ef4057_set_digit()

void ef4057_set_digit	(	uint8_t	digit,
		uint8_t	number
	)

Set a digit.

Sets a digit on the display. The digits are numbered from left to right starting with 1. I. e. digit 1 is the left most 4 is the right most digit.

Parameters

digit	The position of the digit to be set.
number	The value for the specified position.