Common microbit LED handling

Detailed Description

Files
file	microbit.h
	BBC micro:bit specific LED handling.

Macros
#define	MICROBIT_MATRIX_ROWS   (5U)
	Number of rows of the LED matrix.
#define	MICROBIT_MATRIX_COLS   (5U)
	Number of columns of the LED matrix.

Functions
void	microbit_matrix_init (void)
	Initialize the micro:bit's LED matrix.
void	microbit_matrix_on (uint8_t row, uint8_t col)
	Turn on a single LED in the LED matrix.
void	microbit_matrix_off (uint8_t row, uint8_t col)
	Turn off a single LED in the LED matrix.
void	microbit_matrix_set_raw (const uint8_t *buf)
	Write the given 'image' to the LED matrix.
void	microbit_matrix_set_char (char c)
	Write the given character to the matrix, using the Mineplex font.
void	microbit_matrix_shift_str (const char *str, uint32_t delay)
	Shift the given string through the LED matrix.

Macro Definition Documentation

MICROBIT_MATRIX_COLS

#define MICROBIT_MATRIX_COLS   (5U)

Number of columns of the LED matrix.

Definition at line 37 of file microbit.h.

MICROBIT_MATRIX_ROWS

#define MICROBIT_MATRIX_ROWS   (5U)

Number of rows of the LED matrix.

Definition at line 32 of file microbit.h.

Function Documentation

microbit_matrix_off()

void microbit_matrix_off	(	uint8_t	row,
		uint8_t	col
	)

Turn off a single LED in the LED matrix.

Parameters

[in]	row	row of the LED
[in]	col	column of the LED

microbit_matrix_on()

void microbit_matrix_on	(	uint8_t	row,
		uint8_t	col
	)

Turn on a single LED in the LED matrix.

Parameters

[in]	row	row of the LED
[in]	col	column of the LED

microbit_matrix_set_char()

void microbit_matrix_set_char

(

char

c

)

Write the given character to the matrix, using the Mineplex font.

Parameters

[in]

c

character to display

microbit_matrix_set_raw()

void microbit_matrix_set_raw

(

const uint8_t *

buf

)

Write the given 'image' to the LED matrix.

In the given buffer, each byte represents one LED in the matrix, hence the buffer MUST be at least 25 byte wide. A byte value of 0 turns an LED off, while any other value turns it on.

Parameters

[in]

buf

new data to display, MUST be at least 25 byte

microbit_matrix_shift_str()

void microbit_matrix_shift_str	(	const char *	str,
		uint32_t	delay
	)

Shift the given string through the LED matrix.

Parameters

[in]	str	string do display
[in]	delay	delay between each step [in us]