PanEDM_TempSensorCode/main.py

import json
import machine
import asyncio
import ntptime
import select
import time
import sys

import lib.TMP117
import lib.mqtt_as

import event_loops

LED = machine.Pin("LED", machine.Pin.OUT)
LED.on()

def search_dict_list(dictionary, attribute, value):
    """Returns first instance where attribute = value in list of dictionaries"""
    return [item for item in dictionary if item[attribute] == value][0]

# First, load correct config
with open("global_config.json") as f:
    jdata = json.load(f)

uuid = int.from_bytes(machine.unique_id(), "big")

config = search_dict_list(jdata, "micro_id", uuid)

# Setup i2c buses
i2c_buses = []
for bus_config in config["i2c_buses"]:
    bus = {
        "name": bus_config["name"]
    }
    if bus_config["hard_i2c"]:
        bus["obj"] = machine.I2C(
            bus_config["hard_i2c_bus"],
            scl = machine.Pin(bus_config["scl"]),
            sda = machine.Pin(bus_config["sda"]),
            freq = bus_config["freq"])
    else:
        bus["obj"] = machine.SoftI2C(
            scl = machine.Pin(bus_config["scl"]),
            sda = machine.Pin(bus_config["sda"]),
            freq = bus_config["freq"])
    
    i2c_buses.append(bus)

# Setup sensors
sensors = []
for sensor_config in config["sensors"]:

    i2c_conn = search_dict_list(i2c_buses, "name", sensor_config["i2c_name"])["obj"]
    sensor = lib.TMP117.TMP117(
        name = sensor_config["name"],
        i2c = i2c_conn,
        i2c_addr = sensor_config["i2c_addr"],
        config_int = sensor_config["config"]
    )
    sensors.append(sensor)

print(uuid)
print(i2c_buses)
print(sensors)



temperature_topic = config["temperature_topic"]
inbound_topic = config["inbound_topic"]
# Setup communication
if config["wifi_or_usb"] == "wifi":
    # Setup MQTT Client
    mqtt_config = lib.mqtt_as.config
    mqtt_config["ssid"] = config["network_settings"]["ssid"]
    mqtt_config["wifi_pw"] = config["network_settings"]["wifi_pw"]
    mqtt_config["server"] = config["network_settings"]["mqtt_server"]
    mqtt_config["port"] = config["network_settings"]["mqtt_port"]
    mqtt_config["queue_len"] = config["network_settings"]["mqtt_queue_length"]

    mqtt_client = lib.mqtt_as.MQTTClient(mqtt_config)

    # Connect to MQTT broker and sync clock via NTP server
    while not mqtt_client.isconnected():
        try:
            asyncio.run(mqtt_client.connect())
            ntptime.settime()
        except OSError as E:
            print(f"Connection failed. ERROR: {E}. Retrying.")
    
    LED.off()
    try:
        asyncio.run(event_loops.main_wifi(uuid, sensors, mqtt_client, temperature_topic, inbound_topic))
    finally:
        mqtt_client.close()
        LED.on()
        asyncio.new_event_loop()


elif config["wifi_or_usb"] == "usb":
    while True:
        poll_obj = select.poll()
        poll_obj.register(sys.stdin, select.POLLIN)

        t1 = time.ticks_ms()
        sys.stdout.write("REQUEST_TIME\n")

        poll_results = poll_obj.poll(100)
        if poll_results:
            timestamp_ms = int(sys.stdin.readline())
            print(f"Recieved {timestamp_ms}")
            t2 = time.ticks_ms()
            t = time.gmtime(timestamp_ms//1000)
            machine.RTC().datetime((t[0], t[1], t[2], t[6], t[3], t[4], t[5], 0))
            print(f"Time: {time.time(), time.gmtime()}, took {time.ticks_diff(t2, t1)} ms latency")
            break
        else:
            time.sleep(5)
    
    LED.off()
    try:
        asyncio.run(event_loops.main_wired(uuid, sensors, temperature_topic, inbound_topic))
    finally:
        LED.on()
        asyncio.new_event_loop()