def oled_init2(self):
from oled.serial import i2c
from oled.device import ssd1306, ssd1331, sh1106
from oled.render import canvas
# rev.1 users set port=0
# substitute spi(device=0, port=0) below if using that interface
serial = i2c(port=1, address=0x3C)
# substitute ssd1331(...) or sh1106(...) below if using that device
device = ssd1306(serial)
with canvas(device) as draw:
draw.rectangle(device.bounding_box, outline="white", fill="black")
draw.text((30, 40), "Hello World", fill="white")
if (PyTime.tm_min < 10):
sMinute = "0" + sMinute
sSecond = str(PyTime.tm_sec)
if (PyTime.tm_sec < 10):
sSecond = "0" + sSecond
TheFileName = sYear + sMonth + sDay + str(sHour) + str(sMinute) + str(
sSecond)
return TheFileName
# ********************************************************************* main()
# initialize I2C interface
serial = i2c(port=1, address=0x3C)
# Acrobotic SSD1306 128x64 pixels Blue/Yellow Font is 6 x 11
device = ssd1306(serial, width=128, height=64, rotate=0)
# setup GPIO using BCM numbering
GPIO.setmode(GPIO.BCM)
# Pin assignments
logPin = 26 # start logging to file
sbyPin = 19 # standby
hltPin = 13 # exit program
# all logging modes will be selected when HIGH
GPIO.setup(logPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(sbyPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
def test_i2c_cleanup():
serial = i2c(bus=smbus, address=0x9F)
serial.cleanup()
smbus.close.assert_called_once_with()
def test_i2c_data_chunked():
data = list(fib(100))
serial = i2c(bus=smbus, address=0x66)
serial.data(data)
calls = [call(0x66, 0x40, data[i:i + 32]) for i in range(0, 100, 32)]
smbus.write_i2c_block_data.assert_has_calls(calls)
def test_i2c_data():
data = list(fib(10))
serial = i2c(bus=smbus, address=0x21)
serial.data(data)
smbus.write_i2c_block_data.assert_called_once_with(0x21, 0x40, data)
def test_i2c_command():
cmds = [3, 1, 4, 2]
serial = i2c(bus=smbus, address=0x83)
serial.command(*cmds)
smbus.write_i2c_block_data.assert_called_once_with(0x83, 0x00, cmds)
def test_i2c_init_bus_provided():
i2c(bus=smbus, address=0x71)
smbus.open.assert_not_called()
def test_i2c_init_no_bus():
with patch.object(smbus2.SMBus, 'open') as mock:
i2c(port=2, address=0x71)
mock.assert_called_once_with(2)
def test_i2c_init_device_address_error():
with pytest.raises(oled.error.DeviceAddressError) as ex:
i2c(address='foo')
assert str(ex.value) == 'I2C device address invalid: foo'
def test_i2c_init_device_permission_error():
with pytest.raises(oled.error.DevicePermissionError) as ex:
i2c()
assert str(ex.value) == 'I2C device permission denied: /dev/i2c-1'
def test_i2c_init_device_not_found():
port = 200
with pytest.raises(oled.error.DeviceNotFoundError) as ex:
i2c(port=port, address=0x710)
assert str(ex.value) == 'I2C device not found: /dev/i2c-{}'.format(port)
def __init__(self, const=None, serial_interface=None):
self._const = const or oled.const.common
self._serial_interface = serial_interface or i2c()
atexit.register(self.cleanup)
