def test_is_connected_is_false():
'''
Tests is connected. Make sure counterfit is running until you see a message telling you to close it
'''
CounterFitConnection.init('127.0.0.1', 5000)
print("Please close counterfit")
time.sleep(10)
assert not CounterFitConnection.is_connected()
def test_camera_image():
'''
Tests reading an image from a camera sensor. The image is saved locally
'''
CounterFitConnection.init('127.0.0.1', 5000)
image_data = CounterFitConnection.read_binary_sensor('Picamera')
with open('test_image.png', 'wb') as image_file:
image_file.write(image_data.read())
def read(self, retries=15):
'''
Read the humidity and temperature from the sensor
'''
humidity = CounterFitConnection.get_sensor_float_value(
self.__humidity_pin)
temperature = CounterFitConnection.get_sensor_float_value(
self.__temperature_pin)
return humidity, temperature
def wait_ready(self):
'''
return None -- Error status
False -- Timeout
True -- Ready
'''
return CounterFitConnection.is_connected()
def read(self, channel):
'''
Read the ratio between channel input voltage and power voltage (most time it's 3.3V).
Args:
channel (int): 0 - 7, specify the channel to read
Returns:
(int): the ratio, in 0.1%
'''
return CounterFitConnection.get_sensor_int_value(channel)
def capture(self, output, image_format=None):
'''
Capture an image from the camera, storing it in *output*.
'''
# read the image from Counterfit
raw_image = CounterFitConnection.read_binary_sensor('Picamera')
raw_image.seek(0)
image = Image.open(raw_image)
if self.__rotation > 0:
image = image.rotate(self.__rotation, expand=True)
if self.__width > 0 and self.__height > 0:
image = self.__resize_and_crop(image)
image.save(output, format=image_format)
import time
from counterfit_connection import CounterFitConnection
from counterfit_shims_grove.grove_light_sensor_v1_2 import GroveLightSensor
from counterfit_shims_grove.grove_led import GroveLed
CounterFitConnection.init('127.0.0.1', 5000)
light_sensor = GroveLightSensor(1)
led = GroveLed(2)
while True:
sensor_value = light_sensor.light
print(f'Light sensor reading: {sensor_value}')
if sensor_value > 200:
print('Turning LED off')
led.off()
else:
print('Turning LED on')
led.on()
time.sleep(2)
def init_counterfit_device():
'''
Test fixture to initialise the connection to the CounterFit Virtual IoT device running on localhost on port 5000
'''
CounterFitConnection.init('127.0.0.1', 5000)
def off(self) -> None:
'''
light off the led
'''
CounterFitConnection.set_actuator_boolean_value(self.__pin, False)
def on(self) -> None:
'''
light on the led
'''
CounterFitConnection.set_actuator_boolean_value(self.__pin, True)
# In this example:
# We will create a circuit where, when a button is pressed, we will check the current temperature
# If the recorded temperature is under 38 celcius, the relay will be activated
# PIN 1: Button
# PIN 2: Temperature sensor
# PIN 3: Relay
import time
from counterfit_connection import CounterFitConnection
from counterfit_shims_grove.grove_relay import GroveRelay
CounterFitConnection.init('127.0.0.1', 5000)
relay = GroveRelay(3)
while True:
button = CounterFitConnection.get_sensor_boolean_value(
1
) # The button returns boolean values, True for pressed and False for released
if button:
print("The button has been pressed")
temperature = CounterFitConnection.get_sensor_float_value(
2) # Get temperature value
print(f"Recorded temperature is {temperature}")
if temperature < 38:
def get_distance(self):
return CounterFitConnection.get_sensor_int_value(self.__address)
def light(self) -> int:
'''
Get the light strength value, maximum value is 1023
'''
return CounterFitConnection.get_sensor_int_value(self.__pin)
def ReadVisible(self):
'''
Read the visible light from the sensor
'''
return CounterFitConnection.get_sensor_int_value(self.__light_pin)
def readline(self, **kwargs) -> bytes:
'''Reads a line from the serial port
'''
return CounterFitConnection.read_serial_sensor_line(
self.__port).encode('utf-8')
def ReadUV(self):
'''
Read the IR light from the sensor
'''
return CounterFitConnection.get_sensor_int_value(self.__uv_pin)
def test_is_connected():
'''
Tests is connected. Make sure counterfit is running
'''
CounterFitConnection.init('127.0.0.1', 5000)
assert CounterFitConnection.is_connected()
def test_init_counterfit_device():
'''
Tests the connection. You should see the CounterFit app status change to connected
'''
CounterFitConnection.init('127.0.0.1', 5000)