[Python][Micropython] Im trying to port over a python script to micropython

Question

I am trying to port over this script to micropython but im not having any luck. The python code works as intended but i want an esp8266 to monitor the json for the relay status. Im getting OSerror 2 and now Exception once i print it out . Looking for ways to help find out what exception .

Python Code:

import requests
import binascii
from requests.auth import HTTPBasicAuth

url = "http://apex.local/cgi-bin/status.json"
username = "admin"
password = "1234"
previous_status = None

def login():
    credentials = '{}:{}'.format(username, password)
    encoded_credentials = binascii.b2a_base64(credentials.encode())[:-1].decode()
    headers = {'Authorization': 'Basic {}'.format(encoded_credentials)}

    response = requests.get(url, headers=headers)
    return response.json()

def get_relay_status(json_data):
    for output in json_data['istat']['outputs']:
        if output['name'] == 'Relay_1':
            return output['status'][0]

def check_status():
    global previous_status
    
    try:
        json_data = login()
        current_status = get_relay_status(json_data)

        if previous_status is not None and previous_status != current_status:
            print(f"Relay status changed to {current_status}")

        previous_status = current_status
    except requests.exceptions.RequestException as e:
        print(f"Error fetching JSON data: {e}")
while True:
    check_status()

Micropython Code:

import machine
import time
import urequests
import ubinascii

# Wi-Fi credentials
WIFI_SSID = "CREDS"
WIFI_PASSWORD = "CREDS"

# Apex controller credentials
#url = "http://ip.jsontest.com/"
url = "http://apex.local/cgi-bin/status.json"
username = "admin"
password = "1234"
previous_status = None

# LED pin
LED_PIN = 2

# Connect to Wi-Fi network
import network

station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(WIFI_SSID, WIFI_PASSWORD)
while not station.isconnected():
    time.sleep(1)
print('Wi-Fi connection successful')

# Define LED pin as output
led = machine.Pin(LED_PIN, machine.Pin.OUT)

def login():
    credentials = '{}:{}'.format(username, password)
    encoded_credentials = ubinascii.b2a_base64(credentials.encode())[:-1].decode()
    headers = {'Authorization': 'Basic {}'.format(encoded_credentials)}

    response = urequests.get(url, headers=headers)
    return response.json(),response
    
# Fetch relay status and toggle LED accordingly
def get_relay_status(json_data):
    for output in json_data['istat']['outputs']:
        if output['name'] == 'Relay_1':
            status = output['status'][0]
            if status == 'ON':
                led.on()
            else:
                led.off()

def check_status():
    global previous_status
    
    try:
        json_data = login()
        current_status = get_relay_status(json_data)
        if previous_status is not None and previous_status != current_status:
          print(current_status)
          previous_status = current_status
    except:
        print("RequestException")
      
while True:
    check_status()

Answer 1

What i ended up using . Having some memory issues and watchdog . But this code works for the most part on a wemos d1 mini.

import machine
import time
import urequests
import ubinascii
import gc

MIN_HEAP_MEMORY = 10240

# Wi-Fi credentials
WIFI_SSID = "cred"
WIFI_PASSWORD = "cred"

# Apex controller credentials
url = "http://192.168.1.128/cgi-bin/status.json"
username = "admin"
password = "1234"
previous_status = None

# LED pin
LED_PIN = 2
RELAY_PIN = 5

# Connect to Wi-Fi network
import network

station = network.WLAN(network.STA_IF)
station.active(True)
station.connect(WIFI_SSID, WIFI_PASSWORD)
while not station.isconnected():
    time.sleep(1)
    machine.idle()
print('Wi-Fi connection successful')
ip_address = station.ifconfig()[0]
print(ip_address)

# Define LED pin as output
led_pin = machine.Pin(LED_PIN, machine.Pin.OUT)
relay_pin = machine.Pin(RELAY_PIN, machine.Pin.OUT)

# Precompute headers for requests
credentials = '{}:{}'.format(username, password)
encoded_credentials = ubinascii.b2a_base64(credentials.encode())[:-1].decode()
headers = {'Authorization': 'Basic {}'.format(encoded_credentials)}

def login():
    response = urequests.get(url, headers=headers)
    json_data = response.json()
    return json_data

# Fetch relay status and toggle LED accordingly
def get_relay_status(json_data):
    for output in json_data['istat']['outputs']:
        if output['name'] == 'Relay_1':
            status = output['status'][0]
            if status == 'ON':
                
                led_pin.off()
                relay_pin.on()
                control_status = "2"
            else:
                led_pin.on()
                relay_pin.off()
                control_status = "1"
    return status, control_status

def check_status():
    global previous_status
    json_data = login()
    current_status, control_status = get_relay_status(json_data)

    if previous_status is not None and previous_status != current_status:
        control_inject(control_status)
        previous_status = current_status
    else:
        previous_status = current_status

def control_inject(control_status):
    data = {
        "Control_1_state": control_status,
        "noResponse": 1
    }
    data_str = '&'.join(f"{k}={str(v)}" for k, v in data.items())
    print(data_str)

    try:
        # Send the request without checking the response
        urequests.post("http://192.168.1.128/cgi-bin/status.cgi", data=data_str, headers=headers)
    except Exception as e:
        print("If zero all good {e}")

while True:
    try:
        check_status()
        time.sleep(1)
    except Exception as e:
        print("Exception occurred:", e)

    # Force garbage collection and check available heap memory
    gc.collect()
    free_memory = gc.mem_free()
    print("Free heap memory: {} bytes".format(free_memory))

    if free_memory < MIN_HEAP_MEMORY:
        print("Low heap memory, rebooting...")
        machine.reset()

    machine.idle()