def main():
"""
Main program function
"""
passed = True
iopi = IOPi(0x20, False) # new iopi object without initialisation
# Reset to 0x00
iopi.write_bus(0x0000)
iopi.set_bus_direction(0xFFFF)
# Check read_port port for low out of bounds
try:
iopi.read_port(-1)
pass
except ValueError:
print("port low boundary check: PASSED")
pass
except IOError:
passed = False
print("I2C IOError")
else:
passed = False
print("port low boundary check: FAILED")
pass
# Check read_port port for high out of bounds
try:
iopi.read_port(2)
pass
except ValueError:
print("port high boundary check: PASSED")
pass
except IOError:
passed = False
print("I2C IOError")
else:
passed = False
print("port high boundary check: FAILED")
pass
# Logic Analyser Check
print("Logic output Started")
iopi.read_port(0)
iopi.read_port(1)
print("Logic output Ended")
if passed is False:
print("Test Failed")
# when receiving a mqtt message;
def on_message(client, userdata, msg):
message = str(msg.payload)
print(msg.topic + " " + message)
def on_publish(mosq, obj, mid):
print("mid: " + str(mid))
# setup client
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.connect("10.0.0.49", 1883, 60)
client.loop_start()
while True:
sensor_data = [
iobus1.read_port(0),
iobus1.read_port(1),
iobus2.read_port(0),
iobus2.read_port(1)
]
client.publish("sensor/iopi/ports", str(sensor_data))
time.sleep(10)
############### MQTT section ##################
def on_connect(client, userdata, flags, rc):
print("Connected with result code "+str(rc))
client.subscribe("sensor/iopi/ports")
# when receiving a mqtt message;
def on_message(client, userdata, msg):
message = str(msg.payload)
print(msg.topic+" "+message)
def on_publish(mosq, obj, mid):
print("mid: " + str(mid))
# setup client
client = mqtt.Client()
client.on_connect = on_connect
client.on_message = on_message
client.connect("10.0.0.49", 1883, 60)
client.loop_start()
while True:
sensor_data = [iobus1.read_port(0),iobus1.read_port(1), iobus2.read_port(0),iobus2.read_port(1)]
client.publish("sensor/iopi/ports", str(sensor_data))
time.sleep(10)
