# AsyncIO RGB Blink

## Code

```python
"""
Raspberry Breadstick AsyncIO RGB Blink
Breadstick Innovations
March 26, 2024

This code uses the DotStar library to blink 3 of the SK9822 RGB LEDs, 
without time.sleep() based delays.
"""

from board import *
#from time import sleep
from adafruit_dotstar import DotStar
import asyncio

leds = DotStar(DOTSTAR_CLOCK, DOTSTAR_DATA, 24, brightness=0.02, auto_write=False)

RED = (255,0,0)
GREEN = (0,255,0)
BLUE = (0,0,255)
OFF = (0,0,0)

leds.fill(OFF)
leds.show()

async def blinker (led_num, color, frequency):
    
    period = 1/frequency
    global leds
    
    while True:
        leds[led_num] = color
        await asyncio.sleep(period)
        
        leds[led_num] = (0,0,0)
        await asyncio.sleep(period)
    

async def led_refresh (frequency):
    period = 1/frequency
    global leds
    
    while True:
        leds.show()
        await asyncio.sleep(period)
        
async def main():
    red = asyncio.create_task(blinker(0,RED,1))
    green = asyncio.create_task(blinker(12,GREEN,5))
    blue = asyncio.create_task(blinker(23,BLUE,9))
    refresh = asyncio.create_task(led_refresh(30))
    
    await red
    await green
    await blue
    await refresh
    
asyncio.run(main())
    


```


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