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This commit is contained in:
ladyada 2017-09-28 23:08:03 -04:00
parent fd5f4e2cc5
commit b7692eac46
1 changed files with 16 additions and 22 deletions
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38
Introducing_Gemma_M0/Gemma_DotStar.py
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@ -1,51 +1,45 @@
# Gemma IO demo - Dotstar
from digitalio import *
from board import *
import dotstar
import board
import adafruit_dotstar
import time
numpix = 64
strip = dotstar.DotStar(D2, D0, numpix, brightness=0.2)
led = DigitalInOut(D13)
led.direction = Direction.OUTPUT
strip = adafruit_dotstar.DotStar(board.D2, board.D0, numpix, brightness=0.2)
def wheel(pos):
# Input a value 0 to 255 to get a color value.
# The colours are a transition r - g - b - back to r.
if (pos < 0):
return [0, 0, 0]
if (pos > 255):
return [0, 0, 0]
if (pos < 0) or (pos > 255):
return (0, 0, 0)
if (pos < 85):
return [int(pos * 3), int(255 - (pos*3)), 0]
return (int(pos * 3), int(255 - (pos*3)), 0)
elif (pos < 170):
pos -= 85
return [int(255 - pos*3), 0, int(pos*3)]
return (int(255 - pos*3), 0, int(pos*3))
else:
pos -= 170
return [0, int(pos*3), int(255 - pos*3)]
return (0, int(pos*3), int(255 - pos*3))
def rainbow_cycle(wait):
for j in range(255):
for i in range(len(strip)):
idx = int ((i * 256 / len(strip)) + j)
strip[i] = wheel(idx & 255)
strip.write()
strip.show()
time.sleep(wait)
while True:
strip.fill([255, 0, 0])
strip.write()
strip.fill((255, 0, 0))
strip.show()
time.sleep(1)
strip.fill([0, 255, 0])
strip.write()
strip.fill((0, 255, 0))
strip.show()
time.sleep(1)
strip.fill([0, 0, 255])
strip.write()
strip.fill((0, 0, 255))
strip.show()
time.sleep(1)
rainbow_cycle(0)
rainbow_cycle(0.001) # high speed rainbow cycle w/1ms delay per sweep