esp32/modsmartconfig: Add smartconfig module.

[Walkline80]

Here is the test code which shown all methods and constants belong to smartconfig module, I was compiled firmware with micropython master (synced yesterday) and esp-idf v5.0.4, separately tested on esp32 and esp32c3 develop board.

import network
import time
import smartconfig

import esp
esp.osdebug(0)


TYPES = {
    smartconfig.TYPE_ESPTOUCH: 'ESPTOUCH',
    smartconfig.TYPE_AIRKISS: 'AIRKISS',
    smartconfig.TYPE_ESPTOUCH_AIRKISS: 'ESPTOUCH_AIRKISS',
    smartconfig.TYPE_ESPTOUCH_V2: 'ESPTOUCH_V2'
}

TIMEOUT = 120_000 # ms

def run_test():
    sta = network.WLAN(network.STA_IF)
    _ = sta.active(True)

    smartconfig.type(smartconfig.TYPE_ESPTOUCH_AIRKISS)
    print(f'smartconfig type: {TYPES[smartconfig.type()]}')

    smartconfig.start()

    start_ms = time.ticks_ms()

    while not smartconfig.done():
        if time.ticks_ms() - start_ms > TIMEOUT:
            print('smartconfig timeout')
            smartconfig.stop()
            return

        time.sleep_ms(100)

    print('smartconfig done, ', end='')

    if sta.status() == network.STAT_GOT_IP:
        print('and connected to ap')
        print(f'smartconfig info: {smartconfig.info()}')
        print(f'  - ssid: "{smartconfig.ssid()}"')
        print(f'  - password: "{smartconfig.password()}"')
        print(f'  - bssid: {smartconfig.bssid()}')
        print(f'  - type: {smartconfig.type()}({TYPES[smartconfig.type()]})')

        if smartconfig.rvd_data():
            print(f'  - rvd_data: {smartconfig.rvd_data()}') # EspTouch V2 custom data
    else:
        # maybe wrong password or other situations
        print('but failed connect to ap')

    smartconfig.stop()


if __name__ == '__main__':
    run_test()

[Walkline80]

You can go with MicroMsg or EspTouch App for smartconfig tests.

[Walkline80]

In the present, because of 2.4G-5G mixed WiFi and WiFi6 routers, AirKiss protocol is no longer easy to use, even unusable, and using EspTouch and EspTouch V2 protocol requires additional installation of app, I'm afraid that many people don't like to use smartconfig now, but I think there should still be such a function, and it only takes up about 40K of firmware space :)

[Walkline80]

Rebase all commits to single one, and append document for smartconfig.

[Walkline80]

Hi @projectgus, I didn't keep working on #4404 , because the ESP32 port requires ESP-IDF v5, which is a lot different than before, so I chose to start over.

[Walkline80]

According to PR #13763 removed all STATIC macro in source files.