File content as of revision 14:698909b62531:

#include "mbed.h" // remove line if not using mbed
 
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "nrf_delay.h"
#include "nrf_gpio.h"
#include "neopixel.h"
 
 
void neopixel_init(neopixel_strip_t *strip, uint8_t pin_num, uint16_t num_leds)
{
    strip->leds = (color_t*) malloc(sizeof(color_t) * num_leds);
    strip->pin_num = pin_num;
    strip->num_leds = num_leds;
    nrf_gpio_cfg_output(pin_num);
    NRF_GPIO->OUTCLR = (1UL << pin_num);
    for (int i = 0; i < num_leds; i++)
    {   
        strip->leds[i].simple.g = 0;
        strip->leds[i].simple.r = 0;
        strip->leds[i].simple.b = 0;
    }
}
 
void neopixel_clear(neopixel_strip_t *strip)
{
        for (int i = 0; i < strip->num_leds; i++)
        {
            strip->leds[i].simple.g = 0;
            strip->leds[i].simple.r = 0;
            strip->leds[i].simple.b = 0;
        }
            neopixel_show(strip);
}
 
void neopixel_show(neopixel_strip_t *strip)
{
    const uint8_t PIN =  strip->pin_num;
    NRF_GPIO->OUTCLR = (1UL << PIN);
    //nrf_delay_us(50);
    nrf_delay_us(100);
              for (int i = 0; i < strip->num_leds; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    if ((strip->leds[i].grb[j] & 128) > 0)  {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 64) > 0)   {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 32) > 0)   {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 16) > 0)   {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 8) > 0)    {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 4) > 0)    {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 2) > 0)    {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                    
                    if ((strip->leds[i].grb[j] & 1) > 0)    {NEOPIXEL_SEND_ONE}
                    else    {NEOPIXEL_SEND_ZERO}
                }
            }
}
 
uint8_t neopixel_set_color(neopixel_strip_t *strip, uint16_t index, uint8_t red, uint8_t green, uint8_t blue )
{
        if (index < strip->num_leds)
        {
            strip->leds[index].simple.r = red;
            strip->leds[index].simple.g = green;
            strip->leds[index].simple.b = blue;
        }
        else
                return 1;
        return 0;
}
 
uint8_t neopixel_set_color_and_show(neopixel_strip_t *strip, uint16_t index, uint8_t red, uint8_t green, uint8_t blue)
{
        if (index < strip->num_leds)
        {
            strip->leds[index].simple.r = red;
            strip->leds[index].simple.g = green;
            strip->leds[index].simple.b = blue;
          neopixel_show(strip); 
        }
        else
                return 1;
        return 0;
}
 
void neopixel_destroy(neopixel_strip_t *strip)
{
    free(strip->leds);
    strip->num_leds = 0;
    strip->pin_num = 0;
}