my9221.h

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/*
 * Copyright (C) 2017 HAW Hamburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once
 
#include <stdint.h>
 
#include "periph/gpio.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define MY9221_LED_MAX          (12U)
 
#define MY9221_LED_ON           (0xFF)
 
#define MY9221_LED_OFF          (0x00)
 
enum {
    MY9221_DIR_FWD,                 
    MY9221_DIR_REV,                 
};
enum {
    MY9221_OK,                      
    MY9221_ERR,                     
};
typedef struct {
    uint8_t leds;                   
    uint8_t dir;                    
    gpio_t clk;                     
    gpio_t dat;                     
} my9221_params_t;
 
typedef struct {
    my9221_params_t params;         
    uint8_t state[MY9221_LED_MAX];  
} my9221_t;
 
int my9221_init(my9221_t *dev, const my9221_params_t *params);
 
void my9221_set_state(my9221_t *dev, const uint8_t *state, uint8_t  len);
 
void my9221_set_led(my9221_t *dev, const uint8_t led, const uint8_t alpha);
 
void my9221_toggle_led(my9221_t *dev, const uint8_t led);
 
#ifdef __cplusplus
}
#endif