def __init__(self, bus, nchan, bright=1.0):
self.nchans = nchan
self.nchips = (nchan + 15) // 16
self.chips = [
pca9685.PCA9685(bus, 0x40 + k) for k in range(self.nchips)
]
self.curr = [0.0 for v in range(nchan)]
self.brightness = bright
self.fade_delta = None # increment/second for fade
self.fade_start = None # absolute time the fade has started
self.fade_time = None # nominal fade time in seconds
self.fade_done = None # time of fade already processed (in seconds)
except Exception as e:
print('Exception occured during load of', mapping_file)
print('Exception:', e)
mapping = dict()
print('')
print('')
bus = smbus.SMBus(0)
chips = list()
for k in range(num_chips):
# address consecutive from 0x40
chip = pca9685.PCA9685(bus, 0x40 + k)
chip.init_chip()
chips.append(chip)
while True:
if next_ch is not None and (next_ch > num_ch or next_ch < 0):
print('Channel', next_ch, 'out of range!')
next_ch = None
if next_ch is not None:
curr_ch = next_ch
for k in range(num_ch):
chan_data[k] = 0.0
chan_data[curr_ch] = 1.0
next_ch = None
