Software-Defined Virtual Testbed for IoT Systems

Listing 2

Environment emulator code used in the use case.

Import  ...

#we are using virtual sensors on Arduino connected via USB

s_client = SerialClient(＇＇COM4＇＇)

#virtual wiring – virtual BME280 sensor exposed on I2C bus by default (pin PD4 and PD5)

env_sensor = vBME280(1,s_client)

@every(start=2, seconds=3)

def generator_step():

tt = executor.get_time()

env_sensor.set_temp_v(math.sin((tt % 3600) / 3600.0 2 3.14)10 + 20 )

env_sensor.set_pressure_v(math.cos((tt % 3600) / 3600.0 2 3.14) 10 + 950)

env_sensor.set_humidity_v(math.sin((tt % 3600) / 3600.0 2 3.14) 40 + 50)

if _ _name_ _ == ’_ _main_ _’:

start_executing()