getting OSError -202 where running urequests.get from micropy

Question

hi im having error with this code but it runs in python shell could any body help me

from machine import Pin
import time
import network
import urequests
p0 = Pin(0,Pin.OUT)
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect('ssid', 'pass')
response = urequests.get('http://jsonplaceholder.typicode.com/albums/1')
while True:
    ans = response.json()['userId']
    p0.value(1)
    time.sleep(1)
    p0.off()
    time.sleep(1)
    print('ok')

and this is the error:

Traceback (most recent call last):
  File "<stdin>", line 9, in <module>
  File "urequests.py", line 108, in get
  File "urequests.py", line 53, in request
OSError: -202

Illegitimate

the only thing I found online about OSError is stuff related to SSL, just to make sure can you change http to https in the get request? – Acosmism

-202 seems to be related to a failed getaddrinfo() call. – Superadd

Answer 1

Your issue (my guess) is that you begin to urequest.get() without connected to WiFi. Create function that do wifi connection and call it

def do_connect():
    import network
    wlan = network.WLAN(network.STA_IF)
    wlan.active(True)
    if not wlan.isconnected():
        print('connecting to network...')
        wlan.connect('essid', 'password')
        while not wlan.isconnected():
            pass
    print('network config:', wlan.ifconfig())

Explain: wlan.connect() is asynchronous function and you have to wait, while it connects to wifi and only then continue with urequest.get()

Cressy