def test_unsupported_gpio_platform():
try:
gpio_cs_spi(spi=spidev, port=9, device=1, gpio_CS=23)
except luma.core.error.UnsupportedPlatform as ex:
assert str(ex) == 'GPIO access not available'
except ImportError:
pytest.skip(rpi_gpio_missing)
def test_init_invalid_bus_speed():
with pytest.raises(AssertionError):
gpio_cs_spi(gpio=gpio,
spi=spidev,
port=5,
device=2,
bus_speed_hz=942312,
gpio_CS=23)
def test_cleanup():
serial = gpio_cs_spi(gpio=gpio, spi=spidev, port=9, device=1, gpio_CS=23)
serial._managed = True
serial.cleanup()
verify_gpio_cs_spi_init(9, 1)
spidev.close.assert_called_once_with()
assert_only_cleans_whats_setup(gpio)
def test_init():
port = 5
device = 2
bus_speed = 16000000
dc = 17
rst = 11
cs = 23
gpio_cs_spi(gpio=gpio,
spi=spidev,
port=port,
device=device,
bus_speed_hz=16000000,
gpio_DC=dc,
gpio_RST=rst,
gpio_CS=cs)
verify_gpio_cs_spi_init(port, device, bus_speed, dc, rst, cs)
gpio.output.assert_has_calls([call(rst, gpio.LOW), call(rst, gpio.HIGH)])
def test_data():
data = list(fib(100))
serial = gpio_cs_spi(gpio=gpio, spi=spidev, port=9, device=1, gpio_CS=23)
serial.data(data)
verify_gpio_cs_spi_init(9, 1)
gpio.output.assert_has_calls([
call(25, gpio.HIGH),
call(24, gpio.HIGH),
call(23, gpio.LOW),
call(23, gpio.HIGH)
])
spidev.writebytes.assert_called_once_with(data)
def test_command():
cmds = [3, 1, 4, 2]
serial = gpio_cs_spi(gpio=gpio, spi=spidev, port=9, device=1, gpio_CS=23)
serial.command(*cmds)
verify_gpio_cs_spi_init(9, 1)
gpio.output.assert_has_calls([
call(25, gpio.HIGH),
call(24, gpio.LOW),
call(23, gpio.LOW),
call(23, gpio.HIGH)
])
spidev.writebytes.assert_called_once_with(cmds)
def gpio_cs_spi(self):
from luma.core.interface.serial import gpio_cs_spi
GPIO = self.__init_alternative_GPIO()
return gpio_cs_spi(port=self.opts.spi_port,
device=self.opts.spi_device,
bus_speed_hz=self.opts.spi_bus_speed,
cs_high=self.opts.spi_cs_high,
transfer_size=self.opts.spi_transfer_size,
reset_hold_time=self.opts.gpio_reset_hold_time,
reset_release_time=self.opts.gpio_reset_release_time,
gpio_DC=self.opts.gpio_data_command,
gpio_RST=self.opts.gpio_reset,
gpio_CS=self.opts.gpio_chip_select,
gpio=self.gpio or GPIO)
def test_init_device_not_found():
spidev = get_spidev()
port = 1234
with pytest.raises(luma.core.error.DeviceNotFoundError) as ex:
gpio_cs_spi(gpio=gpio, spi=spidev.SpiDev(), port=port, gpio_CS=23)
assert str(ex.value) == 'SPI device not found'
