# This file is part of MaixPY

# Copyright (c) sipeed.com

#

# Licensed under the MIT license:

# http://www.opensource.org/licenses/mit-license.php

#

import time, network

from Maix import GPIO

from machine import UART

from fpioa_manager import fm

from board import board_info

class wifi():

__is_m1w__ = True

uart = None

eb = None

nic = None

def init():

if __class__.__is_m1w__:

fm.register(0, fm.fpioa.GPIOHS1, force=True)

M1wPower=GPIO(GPIO.GPIOHS1, GPIO.OUT)

M1wPower.value(0) # b'\r\n ets Jan 8 2013,rst cause:1, boot mode:(7,6)\r\n\r\nwaiting for host\r\n'

fm.register(board_info.WIFI_EN, fm.fpioa.GPIOHS0) # board_info.WIFI_EN == IO 8

__class__.en = GPIO(GPIO.GPIOHS0,GPIO.OUT)

fm.register(board_info.WIFI_RX,fm.fpioa.UART2_TX) # board_info.WIFI_RX == IO 7

fm.register(board_info.WIFI_TX,fm.fpioa.UART2_RX) # board_info.WIFI_TX == IO 6

__class__.uart = UART(UART.UART2, 115200, timeout=1000, read_buf_len=8192)

def enable(en):

__class__.en.value(en)

def _at_cmd(cmd="AT\r\n", resp="OK\r\n", timeout=20):

__class__.uart.write(cmd) # "AT+GMR\r\n"

time.sleep_ms(timeout)

tmp = __class__.uart.read()

# print(tmp)

if tmp and tmp.endswith(resp):

return True

return False

def at_cmd(cmd="AT\r\n", timeout=20):

__class__.uart.write(cmd) # "AT+GMR\r\n"

time.sleep_ms(timeout)

tmp = __class__.uart.read()

return tmp

def reset(force=False, reply=5):

if force == False and __class__.isconnected():

return True

__class__.init()

for i in range(reply):

print('reset...')

__class__.enable(False)

time.sleep_ms(50)

__class__.enable(True)

time.sleep_ms(500) # at start > 500ms

if __class__._at_cmd(timeout=500):

break

__class__._at_cmd()

__class__._at_cmd('AT+UART_CUR=921600,8,1,0,0\r\n', "OK\r\n")

__class__.uart = UART(UART.UART2, 921600, timeout=1000, read_buf_len=10240)

# important! baudrate too low or read_buf_len too small will loose data

#print(__class__._at_cmd())

try:

__class__.nic = network.ESP8285(__class__.uart)

time.sleep_ms(500) # wait at ready to connect

except Exception as e:

print(e)

return False

return True

def connect(ssid="wifi_name", pasw="pass_word"):

if __class__.nic != None:

return __class__.nic.connect(ssid, pasw)

def ifconfig(): # should check ip != 0.0.0.0

if __class__.nic != None:

return __class__.nic.ifconfig()

def isconnected():

if __class__.nic != None:

return __class__.nic.isconnected()

return False

if __name__ == "__main__":

# It is recommended to callas a class library (upload network_espat.py)

# from network_espat import wifi

SSID = "Sipeed_2.4G"

PASW = "xxxxxxxx"

def check_wifi_net(reply=5):

if wifi.isconnected() != True:

for i in range(reply):

try:

wifi.reset()

print('try AT connect wifi...', wifi._at_cmd())

wifi.connect(SSID, PASW)

if wifi.isconnected():

break

except Exception as e:

print(e)

return wifi.isconnected()

if wifi.isconnected() == False:

check_wifi_net()

print('network state:', wifi.isconnected(), wifi.ifconfig())

# The network is no longer configured repeatedly

import socket

sock = socket.socket()

# your send or recv

# see other demo_socket_tcp.py / udp / http / mqtt

sock.close()

'''ouput

>>>

raw REPL; CTRL-B to exit

>OK

[Warning] function is used by fm.fpioa.GPIOHS1(pin:17)

[Warning] function is used by fm.fpioa.GPIOHS0(pin:16)

reset...

try AT connect wifi... True

could not connect to ssid=Sipeed_2.4G

reset...

try AT connect wifi... True

network state: True ('192.168.0.165', '255.255.255.0', '192.168.0.1', '0', '0', 'b0:b9:8a:5b:be:7f', 'Sipeed_2.4G')

>

MicroPython v0.5.1-136-g039f72b6c-dirty on 2020-11-18; Sipeed_M1 with kendryte-k210

Type "help()" for more information.

>>>

>>>

>>>

raw REPL; CTRL-B to exit

>OK

network state: True ('192.168.0.165', '255.255.255.0', '192.168.0.1', '0', '0', 'b0:b9:8a:5b:be:7f', 'Sipeed_2.4G')

>

'''