maix-wifi-starwars.py

WIFI_SSID = "ssid"
WIFI_PASSWD = "password"

import network, time

print("=== Configuring FPIOA")
from fpioa_manager import fm, board_info
from Maix import GPIO
from machine import UART

fm.register(8, fm.fpioa.GPIOHS0, force=True)
wifi_en=GPIO(GPIO.GPIOHS0,GPIO.OUT)
fm.register(board_info.WIFI_RX, fm.fpioa.UART2_TX, force=True)
fm.register(board_info.WIFI_TX, fm.fpioa.UART2_RX, force=True)

def wifi_reset():
    global uart

    wifi_en.value(0)
    time.sleep_ms(200)
    wifi_en.value(1)
    time.sleep(2)

    uart = UART(UART.UART2,115200,timeout=1000, read_buf_len=4096)
    tmp = uart.read()
    uart.write("AT+UART_CUR=921600,8,1,0,0\r\n")
    print(uart.read())

    uart = UART(UART.UART2, 921600, timeout=1000, read_buf_len=10240)
    uart.write("AT\r\n")
    tmp = uart.read()
    print(tmp)

    if not tmp.endswith("OK\r\n"):
        print("reset fail")
        return None
    try:
        nic = network.ESP8285(uart)
    except Exception:
        return None
    return nic

def do_connect(nic):
    err = 0
    while 1:
        try:
            nic.connect(WIFI_SSID, WIFI_PASSWD)
        except Exception:
            err += 1
            print("Connect AP failed, now try again")
            if err > 3:
                raise Exception("Conenct AP fail")
            continue
        break

print("\r\n=== Connecting to Wi-Fi AP")
nic = wifi_reset()
if not nic:
    raise Exception("WiFi init fail")
do_connect(nic)
nic.ifconfig()

print("\r\n=== Connecting to the Internet")
import socket
s = socket.socket()

addr_info = socket.getaddrinfo("towel.blinkenlights.nl", 23)
addr = addr_info[0][-1]

s.connect(addr)

while True:
    data = s.recv(10240)
    print(str(data, 'utf8'), end='')