LED_R_G = 0x01
LED_R_B = 0x02
LED_M_R = 0x03
LED_M_G = 0x04
LED_M_B = 0x05
LED_L_R = 0x06
LED_L_G = 0x07
LED_L_B = 0x08
leds = [0x00] * 18
# set gamma correction for backlight to normalise brightness
g_channel_gamma = [int(value / 1.6) for value in sn3218.default_gamma_table]
sn3218.channel_gamma(1, g_channel_gamma)
sn3218.channel_gamma(4, g_channel_gamma)
sn3218.channel_gamma(7, g_channel_gamma)
r_channel_gamma = [int(value / 1.4) for value in sn3218.default_gamma_table]
sn3218.channel_gamma(0, r_channel_gamma)
sn3218.channel_gamma(3, r_channel_gamma)
sn3218.channel_gamma(6, r_channel_gamma)
w_channel_gamma = [int(value / 24) for value in sn3218.default_gamma_table]
for i in range(9, 18):
sn3218.channel_gamma(i, w_channel_gamma)
sn3218.enable()
def off():
"""
Turns off the backlight.
"""
rgb(0, 0, 0)
def update():
"""
Update backlight with changes to the LED buffer
"""
sn3218.output(leds)
# set gamma correction for backlight to normalise brightness
g_channel_gamma = [int(value / 1.6) for value in sn3218.default_gamma_table]
sn3218.channel_gamma(1, g_channel_gamma)
sn3218.channel_gamma(4, g_channel_gamma)
sn3218.channel_gamma(7, g_channel_gamma)
r_channel_gamma = [int(value / 1.4) for value in sn3218.default_gamma_table]
sn3218.channel_gamma(0, r_channel_gamma)
sn3218.channel_gamma(3, r_channel_gamma)
sn3218.channel_gamma(6, r_channel_gamma)
w_channel_gamma = [int(value / 24) for value in sn3218.default_gamma_table]
for i in range(9, 18):
sn3218.channel_gamma(i, w_channel_gamma)
sn3218.enable()
exit("This library requires the cap1xxx module\nInstall with: sudo pip install cap1xxx")
cap = cap1xxx.Cap1166(i2c_addr=0x2C, skip_init=True)
NUM_LEDS = 6
STEP_VALUE = 16
leds = [0x00] * 18 # B G R, B G R, B G R, B G R, B G R, B G R
# set gamma correction for backlight to normalise brightness
g_channel_gamma = [int(value / 1.6) for value in sn3218.default_gamma_table]
r_channel_gamma = [int(value / 1.4) for value in sn3218.default_gamma_table]
for x in range(0, 18, 3):
sn3218.channel_gamma(x + 1, g_channel_gamma)
sn3218.channel_gamma(x + 2, r_channel_gamma)
sn3218.enable()
graph_set_led_state = cap.set_led_state
graph_set_led_polarity = cap.set_led_polarity
graph_set_led_duty = cap.set_led_direct_duty
def use_rbg():
"""
Swaps the Green and Blue channels on the LED backlight
Use if you have a first batch Display-o-Tron 3K
"""
"This library requires the cap1xxx module\nInstall with: sudo pip install cap1xxx"
)
cap = cap1xxx.Cap1166(i2c_addr=0x2C, skip_init=True)
NUM_LEDS = 6
STEP_VALUE = 16
leds = [0x00] * 18 # B G R, B G R, B G R, B G R, B G R, B G R
# set gamma correction for backlight to normalise brightness
g_channel_gamma = [int(value / 1.6) for value in sn3218.default_gamma_table]
r_channel_gamma = [int(value / 1.4) for value in sn3218.default_gamma_table]
for x in range(0, 18, 3):
sn3218.channel_gamma(x + 1, g_channel_gamma)
sn3218.channel_gamma(x + 2, r_channel_gamma)
sn3218.enable()
graph_set_led_state = cap.set_led_state
graph_set_led_polarity = cap.set_led_polarity
graph_set_led_duty = cap.set_led_direct_duty
def use_rbg():
"""Does nothing.
Implemented for library compatibility with Dot3k backlight.
"""
def test_channel_gamma_wrong_channel(self):
"""channel_gamma fails with wrong type"""
with self.assertRaisesRegex(TypeError, 'channel must be an integer'):
sn3218.channel_gamma("apple", [0x88] * 256)
def test_channel_gamma_ok(self):
"""Set channel gamma"""
sn3218.channel_gamma(0, [0x88] * 256)
self.assertEqual(sn3218.channel_gamma_table[0], [0x88] * 256)
def test_channel_gamma_wrong_table_len(self):
"""channel_gamma fails with wrong length"""
with self.assertRaisesRegex(TypeError, 'list of 256 integers'):
sn3218.channel_gamma(0, [0x88] * 200)
def test_channel_gamma_wrong_table(self):
"""channel_gamma fails with wrong type"""
with self.assertRaisesRegex(TypeError, 'must be a list'):
sn3218.channel_gamma(0, (1, 2, 3))
def test_channel_gamma_wrong_channel_val(self):
"""channel_gamma fails with wrong value"""
with self.assertRaisesRegex(ValueError, 'in the range 0..17'):
sn3218.channel_gamma(999, [0x88] * 256)
