def rainbow_on():
global step
step += 1
for i in range(16):
x, y = number_to_xy(i)
hue = (x + y + (step / 20)) / 8
hue = hue - int(hue)
hue = hue - math.floor(hue)
r, g, b = hsv_to_rgb(hue, 1, 1)
keys[i].set_led(r, g, b)
# Set up Keybow
i2c = board.I2C()
keybow = Keybow2040(i2c)
keys = keybow.keys
# Increment step to shift animation across keys.
step = 0
while True:
# Always remember to call keybow.update() on every iteration of your loop!
keybow.update()
step += 1
for i in range(16):
# Convert the key number to an x/y coordinate to calculate the hue
# in a matrix style-y.
x, y = number_to_xy(i)
# Calculate the hue.
hue = (x + y + (step / 20)) / 8
hue = hue - int(hue)
hue = hue - math.floor(hue)
# Convert the hue to RGB values.
r, g, b = hsv_to_rgb(hue, 1, 1)
# Display it on the key!
keys[i].set_led(r, g, b)