# Read the various information coming from the trackball
#
# See GitHub: https://github.com/mchobby/esp8266-upy/tree/master/trackball
from machine import I2C
from trackball import Trackball
import time
i2c = I2C(2) # Y9=scl, Y10=sda or Pyboard-Uno-R3 (I2C over pin 13)
# initialize the trackball
trackball = Trackball(i2c)
trackball.set_rgbw(255, 0, 0, 0)
while True:
up, down, left, right, switch, state = trackball.read()
print("r: {:02d} u: {:02d} d: {:02d} l: {:02d} switch: {:03d} state: {}".
format(right, up, down, left, switch, state))
time.sleep(0.200)
# Calculate hue and brightness
h = x / 100.0
v = y / 100.0
# Prevents button from retriggering
debounce = 0.5
# Change toggled state if switch is pressed
if state and not toggled:
toggled = True
time.sleep(debounce)
elif state and toggled:
toggled = False
time.sleep(debounce)
# Set brightness to zero if switch toggled
if toggled:
v = 0
# Calculate RGB vals
w = 0
r, g, b = [int(c * 255) for c in hsv_to_rgb(h, 1.0, v)]
# Set LEDs
trackball.set_rgbw(r, g, b, w)
time.sleep(0.01)
finally:
# Ligth off the trackball
trackball.set_rgbw(0, 0, 0, 0)
