File content as of revision 14:f20934552994:

/* Copyright (c) 2015 bickster, MIT License
 *
 * 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.
 */
 #ifndef NEOPIXEL_H
 #define NEOPIXEL_H

#include <stdbool.h>
#include <stdint.h>


//These defines are timed specific to a series of if statements and will need to be changed
//to compensate for different writing algorithms than the one in neopixel.c
#define NEOPIXEL_SEND_ONE   NRF_GPIO->OUTSET = (1UL << PIN); \
                NRF_GPIO->OUTSET = (1UL << PIN); \
                NRF_GPIO->OUTSET = (1UL << PIN); \
                NRF_GPIO->OUTCLR = (1UL << PIN);

#define NEOPIXEL_SEND_ZERO  NRF_GPIO->OUTSET = (1UL << PIN); \
                NRF_GPIO->OUTCLR = (1UL << PIN); \
                NRF_GPIO->OUTCLR = (1UL << PIN); \
                NRF_GPIO->OUTCLR = (1UL << PIN); \
                NRF_GPIO->OUTCLR = (1UL << PIN);
        
typedef union {
        struct {
            uint8_t g, r, b;
        }simple;
    uint8_t grb[3];
} color_t;

typedef struct {
    uint8_t pin_num;
    uint16_t num_leds;
    color_t *leds;
} neopixel_strip_t;

/**
  @brief Initialize GPIO and data location
  @param[in] pointer to Strip structure
    @param[in] pin number for GPIO
*/
void neopixel_init(neopixel_strip_t *strip, uint8_t pin_num, uint16_t num_leds);
    
/**
  @brief Turn all LEDs off
  @param[in] pointer to Strip structure
*/
void neopixel_clear(neopixel_strip_t *strip);

/**
  @brief Update strip with structure data
  @param[in] pointer to Strip structure
*/
void neopixel_show(neopixel_strip_t *strip);

/**
  @brief Write RGB value to LED structure
  @param[in] pointer to Strip structure
    @param[in] red value
    @param[in] green value
    @param[in] blue value
    @param[in] LED number (starting at 1)
  @retval 0 Successful write
  @retval 1 LED number is out of bounds
*/
uint8_t neopixel_set_color(neopixel_strip_t *strip, uint16_t index, uint8_t red, uint8_t green, uint8_t blue );


/**
  @brief Write RGB value to LED structure and update LED
  @param[in] pointer to Strip structure
    @param[in] red value
    @param[in] green value
    @param[in] blue value
    @param[in] LED number (starting at 1)
  @retval 0 Successful write
  @retval 1 LED number is out of bounds
*/
uint8_t neopixel_set_color_and_show(neopixel_strip_t *strip, uint16_t index, uint8_t red, uint8_t green, uint8_t blue);

/**
  @brief Clears structure data
  @param[in] pointer to Strip structure
*/
void neopixel_destroy(neopixel_strip_t *strip);

#endif