Http Request in ESP32 With MicroPython

MCU, IOT

ESP32 has WIFI connectivity support, in this exercise we will test how to send http request.

Connect to WIFI

There is a file named with boot.py, it is executed on every boot, so we can put WIFI connection related code here

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

do_connect()

Send http request

Once the WIFI is connected successfully, we can try to send request to RANDOM USER GENERATOR with code below, it will print a random user name every 5 seconds

  • Install urequests - Download urequests.py, and save it the board with same file name.
  • Code in main.py
import urequests
import json
import time

while True:
    response = urequests.get('https://randomuser.me/api/')
    # res = json.loads(response.text)
    res = response.json()
    print("StatusCode: ",response.status_code)
    print("  userName: ",res['results'][0]['login']['username'])
    time.sleep(5)