apa102.h

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/*
 * Author: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
 * Copyright (c) 2016 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#pragma once

#include <stdint.h>
#include "upm.h"
#include "mraa/gpio.h"
#include "mraa/spi.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct _apa102_context {
    mraa_spi_context        spi;

    // optional chip select
    mraa_gpio_context       cs;

    uint8_t*    buffer;
    int         leds;
    int         framelength;
} *apa102_context;


apa102_context apa102_init(int ledcount, int bus, int cs);

void apa102_close(apa102_context dev);

upm_result_t apa102_set_led(apa102_context dev, uint16_t index, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);

upm_result_t apa102_set_led_brightness(apa102_context dev, uint16_t index, uint8_t brightness);

upm_result_t apa102_set_leds(apa102_context dev, uint16_t s_index, uint16_t e_index, uint8_t brightness, uint8_t r, uint8_t g, uint8_t b);

upm_result_t apa102_set_leds_brightness(apa102_context dev, uint16_t s_index, uint16_t e_index, uint8_t brightness);

upm_result_t apa102_refresh(apa102_context dev);

#ifdef __cplusplus
}
#endif