my9221.h File Reference

Interface for the MY9221 LED controller driver. More...

Detailed Description

Interface for the MY9221 LED controller driver.

Author

Sebastian Meiling s@mln.nosp@m.g.ne.nosp@m.t

Definition in file my9221.h.

#include <stdint.h>
#include "periph/gpio.h"

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Data Structures
struct	my9221_params_t
	Parameters needed for device initialization. More...
struct	my9221_t
	Device descriptor for MY9221 LED controller. More...

Macros
#define	MY9221_LED_MAX   (12U)
	Maximum number of distinct LEDs the controller can operate.
#define	MY9221_LED_ON   (0xFF)
	Max brightness value to turn LED full on.
#define	MY9221_LED_OFF   (0x00)
	Min brightness value to turn LED off.

Functions
int	my9221_init (my9221_t *dev, const my9221_params_t *params)
	Initialize the given driver.
void	my9221_set_state (my9221_t *dev, const uint8_t *state, uint8_t len)
	Set device state.
void	my9221_set_led (my9221_t *dev, const uint8_t led, const uint8_t alpha)
	Set brightness of distinct LED.
void	my9221_toggle_led (my9221_t *dev, const uint8_t led)
	Toggle a distinct LED.

Direction the controller accesses LEDs
enum	{ MY9221_DIR_FWD , MY9221_DIR_REV }

Driver specific return codes
enum	{ MY9221_OK , MY9221_ERR }