def test_setup_mock_invalid_timeout():
"""Test an attempt to set up the BH1745 with a reset timeout."""
from tools import SMBusFakeDevice
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDevice
sys.modules['smbus'] = smbus
from bh1745 import BH1745
with pytest.raises(ValueError):
bh1745 = BH1745()
bh1745.setup(timeout=0)
with pytest.raises(ValueError):
bh1745 = BH1745()
bh1745.setup(timeout=-1)
def test_setup_id_mismatch():
"""Test an attempt to set up the BH1745 with invalid sensor present."""
sys.modules['smbus'] = mock.MagicMock()
from bh1745 import BH1745
bh1745 = BH1745()
with pytest.raises(RuntimeError):
bh1745.setup()
def _setup():
global bh1745
from tools import SMBusFakeDeviceNoTimeout
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDeviceNoTimeout
sys.modules['smbus'] = smbus
from bh1745 import BH1745
bh1745 = BH1745()
def test_setup_mock_present():
"""Test an attempt to set up a present and working (mocked) BH1745."""
from tools import SMBusFakeDeviceNoTimeout
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDeviceNoTimeout
sys.modules['smbus'] = smbus
from bh1745 import BH1745
bh1745 = BH1745()
bh1745.setup(timeout=0.01)
def test_i2c_addr():
"""Test various valid and invalid i2c addresses for BH1745."""
from tools import SMBusFakeDeviceNoTimeout
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDeviceNoTimeout
sys.modules['smbus'] = smbus
from bh1745 import BH1745
with pytest.raises(ValueError):
bh1745 = BH1745(i2c_addr=0x40)
with pytest.raises(ValueError):
bh1745 = BH1745()
bh1745.setup(i2c_addr=0x40)
bh1745 = BH1745(i2c_addr=0x38)
bh1745 = BH1745(i2c_addr=0x39)
del bh1745
def test_setup_not_present():
"""Test an attempt to set up the BH1745 with no sensor present."""
from tools import SMBusFakeDeviceIOError
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDeviceIOError
sys.modules['smbus'] = smbus
from bh1745 import BH1745
bh1745 = BH1745()
with pytest.raises(RuntimeError):
bh1745.setup()
def test_is_setup():
"""Test ready() returns correct state."""
from tools import SMBusFakeDeviceNoTimeout
smbus = mock.Mock()
smbus.SMBus = SMBusFakeDeviceNoTimeout
sys.modules['smbus'] = smbus
from bh1745 import BH1745
bh1745 = BH1745()
assert bh1745.ready() is False
bh1745.setup()
assert bh1745.ready() is True
#!/usr/bin/env python
import time
from bh1745 import BH1745
bh1745 = BH1745()
bh1745.setup()
bh1745.set_leds(1)
time.sleep(1.0) # Skip the reading that happened before the LEDs were enabled
try:
while True:
r, g, b, c = bh1745.get_rgbc_raw()
print('RGBC: {:10.1f} {:10.1f} {:10.1f} {:10.1f}'.format(r, g, b, c))
time.sleep(0.5)
except KeyboardInterrupt:
bh1745.set_leds(0)
#!/usr/bin/env python
### reset BH1745 LEDs
from bh1745 import BH1745
bh = BH1745()
bh.setup()
bh.set_leds(1)
bh.set_leds(0)
print('turning off LED')
#!/usr/bin/env python
import time
from bh1745 import BH1745
bh1745_a = BH1745(0x38) # Stock BH1745 breakout or jumper soldered
bh1745_b = BH1745(0x39) # Cuttable trace cut
bh1745_a.setup()
bh1745_b.setup()
bh1745_a.set_leds(1)
bh1745_b.set_leds(1)
try:
while True:
r, g, b = bh1745_a.get_rgb_scaled()
print('A: #{:02x}{:02x}{:02x}'.format(r, g, b))
r, g, b = bh1745_b.get_rgb_scaled()
print('B: #{:02x}{:02x}{:02x}'.format(r, g, b))
time.sleep(1.0)
except KeyboardInterrupt:
bh1745_a.set_leds(0)
bh1745_b.set_leds(0)