src/eric7/MicroPython/Devices/RP2040Devices.py

# -*- coding: utf-8 -*-

# Copyright (c) 2021 - 2023 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the device interface class for RP2040 based boards
(e.g. Raspberry Pi Pico).
"""

import ast
import binascii
import json
import os

from PyQt6.QtCore import QUrl, pyqtSlot
from PyQt6.QtNetwork import QNetworkReply, QNetworkRequest
from PyQt6.QtWidgets import QDialog, QMenu

from eric7 import Globals, Preferences
from eric7.EricGui.EricOverrideCursor import EricOverrideCursor
from eric7.EricWidgets import EricMessageBox
from eric7.EricWidgets.EricApplication import ericApp

from ..MicroPythonWidget import HAS_QTCHART
from . import FirmwareGithubUrls
from .DeviceBase import BaseDevice


class RP2040Device(BaseDevice):
    """
    Class implementing the device for RP2040 based boards.
    """

    def __init__(self, microPythonWidget, deviceType, parent=None):
        """
        Constructor

        @param microPythonWidget reference to the main MicroPython widget
        @type MicroPythonWidget
        @param deviceType device type assigned to this device interface
        @type str
        @param parent reference to the parent object
        @type QObject
        """
        super().__init__(microPythonWidget, deviceType, parent)

        self.__createRP2040Menu()

        self.__statusTranslations = {
            "picow": {
                -3: self.tr("authentication failed"),
                -2: self.tr("no matching access point found"),
                -1: self.tr("connection failed"),
                0: self.tr("idle"),
                1: self.tr("connecting"),
                2: self.tr("connected, waiting for IP address"),
                3: self.tr("connected"),
            },
            "pimoroni": {
                0: self.tr("idle"),
                1: self.tr("no matching access point found"),
                2: self.tr("network scan completed"),
                3: self.tr("connected"),
                4: self.tr("connection failed"),
                5: self.tr("connection lost"),
                6: self.tr("disconnected"),
                7: self.tr("AP listening"),
                8: self.tr("AP connected"),
                9: self.tr("AP failed"),
            },
        }
        # TODO: must be specific (picow, pimoroni)
        self.__securityTranslations = {
            0: self.tr("open", "open WiFi network"),
            1: "WEP",
            2: "WPA",
            3: "WPA2",
            4: "WPA/WPA2",
            5: "WPA2 (CCMP)",
            6: "WPA3",
            7: "WPA2/WPA3",
        }

    def setButtons(self):
        """
        Public method to enable the supported action buttons.
        """
        super().setButtons()

        self.microPython.setActionButtons(
            run=True, repl=True, files=True, chart=HAS_QTCHART
        )

    def forceInterrupt(self):
        """
        Public method to determine the need for an interrupt when opening the
        serial connection.

        @return flag indicating an interrupt is needed
        @rtype bool
        """
        return False

    def deviceName(self):
        """
        Public method to get the name of the device.

        @return name of the device
        @rtype str
        """
        return self.tr("RP2040")

    def canStartRepl(self):
        """
        Public method to determine, if a REPL can be started.

        @return tuple containing a flag indicating it is safe to start a REPL
            and a reason why it cannot.
        @rtype tuple of (bool, str)
        """
        return True, ""

    def canStartPlotter(self):
        """
        Public method to determine, if a Plotter can be started.

        @return tuple containing a flag indicating it is safe to start a
            Plotter and a reason why it cannot.
        @rtype tuple of (bool, str)
        """
        return True, ""

    def canRunScript(self):
        """
        Public method to determine, if a script can be executed.

        @return tuple containing a flag indicating it is safe to start a
            Plotter and a reason why it cannot.
        @rtype tuple of (bool, str)
        """
        return True, ""

    def runScript(self, script):
        """
        Public method to run the given Python script.

        @param script script to be executed
        @type str
        """
        pythonScript = script.split("\n")
        self.sendCommands(pythonScript)

    def canStartFileManager(self):
        """
        Public method to determine, if a File Manager can be started.

        @return tuple containing a flag indicating it is safe to start a
            File Manager and a reason why it cannot.
        @rtype tuple of (bool, str)
        """
        return True, ""

    def __createRP2040Menu(self):
        """
        Private method to create the RO2040 submenu.
        """
        self.__rp2040Menu = QMenu(self.tr("RP2040 Functions"))

        self.__showMpyAct = self.__rp2040Menu.addAction(
            self.tr("Show MicroPython Versions"), self.__showFirmwareVersions
        )
        self.__rp2040Menu.addSeparator()
        self.__bootloaderAct = self.__rp2040Menu.addAction(
            self.tr("Activate Bootloader"), self.__activateBootloader
        )
        self.__flashMpyAct = self.__rp2040Menu.addAction(
            self.tr("Flash MicroPython Firmware"), self.__flashPython
        )
        self.__rp2040Menu.addSeparator()
        self.__resetAct = self.__rp2040Menu.addAction(
            self.tr("Reset Device"), self.__resetDevice
        )

    def addDeviceMenuEntries(self, menu):
        """
        Public method to add device specific entries to the given menu.

        @param menu reference to the context menu
        @type QMenu
        """
        connected = self.microPython.isConnected()
        linkConnected = self.microPython.isLinkConnected()

        self.__showMpyAct.setEnabled(connected)
        self.__bootloaderAct.setEnabled(connected)
        self.__flashMpyAct.setEnabled(not linkConnected)
        self.__resetAct.setEnabled(connected)

        menu.addMenu(self.__rp2040Menu)

    def hasFlashMenuEntry(self):
        """
        Public method to check, if the device has its own flash menu entry.

        @return flag indicating a specific flash menu entry
        @rtype bool
        """
        return True

    @pyqtSlot()
    def __flashPython(self):
        """
        Private slot to flash a MicroPython firmware to the device.
        """
        from ..UF2FlashDialog import UF2FlashDialog

        dlg = UF2FlashDialog(boardType="rp2040")
        dlg.exec()

    @pyqtSlot()
    def __activateBootloader(self):
        """
        Private slot to switch the board into 'bootloader' mode.
        """
        if self.microPython.isConnected():
            self.microPython.deviceInterface().execute(
                [
                    "import machine",
                    "machine.bootloader()",
                ],
                mode=self._submitMode,
            )
            # simulate pressing the disconnect button
            self.microPython.on_connectButton_clicked()

    @pyqtSlot()
    def __showFirmwareVersions(self):
        """
        Private slot to show the firmware version of the connected device and the
        available firmware version.
        """
        if self.microPython.isConnected():
            if self._deviceData["mpy_name"] != "micropython":
                EricMessageBox.critical(
                    None,
                    self.tr("Show MicroPython Versions"),
                    self.tr(
                        """The firmware of the connected device cannot be"""
                        """ determined or the board does not run MicroPython."""
                        """ Aborting..."""
                    ),
                )
            else:
                if self._deviceData["mpy_variant"] == "Pimoroni Pico":
                    # MicroPython with Pimoroni add-on libraries
                    url = QUrl(FirmwareGithubUrls["pimoroni_pico"])
                else:
                    url = QUrl(FirmwareGithubUrls["micropython"])
                ui = ericApp().getObject("UserInterface")
                request = QNetworkRequest(url)
                reply = ui.networkAccessManager().head(request)
                reply.finished.connect(lambda: self.__firmwareVersionResponse(reply))

    @pyqtSlot(QNetworkReply)
    def __firmwareVersionResponse(self, reply):
        """
        Private slot handling the response of the latest version request.

        @param reply reference to the reply object
        @type QNetworkReply
        """
        latestUrl = reply.url().toString()
        tag = latestUrl.rsplit("/", 1)[-1]
        while tag and not tag[0].isdecimal():
            # get rid of leading non-decimal characters
            tag = tag[1:]
        latestVersion = Globals.versionToTuple(tag)

        if self._deviceData["mpy_version"] == "unknown":
            currentVersionStr = self.tr("unknown")
            currentVersion = (0, 0, 0)
        else:
            currentVersionStr = (
                self._deviceData["mpy_variant_version"]
                if bool(self._deviceData["mpy_variant_version"])
                else self._deviceData["mpy_version"]
            )
            currentVersion = Globals.versionToTuple(currentVersionStr)

        msg = self.tr(
            "<h4>MicroPython Version Information</h4>"
            "<table>"
            "<tr><td>Installed:</td><td>{0}</td></tr>"
            "<tr><td>Available:</td><td>{1}</td></tr>"
            "{2}"
            "</table>"
        ).format(
            currentVersionStr,
            tag,
            self.tr("<tr><td>Variant:</td><td>{0}</td></tr>").format(
                self._deviceData["mpy_variant"]
            )
            if self._deviceData["mpy_variant"]
            else "",
        )
        if self._deviceData["mpy_variant"] in ["Pimoroni Pico"] and not bool(
            self._deviceData["mpy_variant_version"]
        ):
            # cannot derive update info
            msg += self.tr("<p>Update may be available.</p>")
        elif currentVersion < latestVersion:
            msg += self.tr("<p><b>Update available!</b></p>")

        EricMessageBox.information(
            None,
            self.tr("MicroPython Version"),
            msg,
        )

    @pyqtSlot()
    def __resetDevice(self):
        """
        Private slot to reset the connected device.
        """
        self.microPython.deviceInterface().execute(
            "import machine\nmachine.reset()\n", mode=self._submitMode
        )

    def getDocumentationUrl(self):
        """
        Public method to get the device documentation URL.

        @return documentation URL of the device
        @rtype str
        """
        return Preferences.getMicroPython("MicroPythonDocuUrl")

    def getDownloadMenuEntries(self):
        """
        Public method to retrieve the entries for the downloads menu.

        @return list of tuples with menu text and URL to be opened for each
            entry
        @rtype list of tuple of (str, str)
        """
        return [
            (
                self.tr("MicroPython Firmware"),
                Preferences.getMicroPython("MicroPythonFirmwareUrl"),
            ),
            ("<separator>", ""),
            (self.tr("Pimoroni Pico Firmware"), FirmwareGithubUrls["pimoroni_pico"]),
            ("<separator>", ""),
            (
                self.tr("CircuitPython Firmware"),
                Preferences.getMicroPython("CircuitPythonFirmwareUrl"),
            ),
            (
                self.tr("CircuitPython Libraries"),
                Preferences.getMicroPython("CircuitPythonLibrariesUrl"),
            ),
        ]

    ##################################################################
    ## time related methods below
    ##################################################################

    def _getSetTimeCode(self):
        """
        Protected method to get the device code to set the time.

        Note: This method must be implemented in the various device specific
        subclasses.

        @return code to be executed on the connected device to set the time
        @rtype str
        """
        # rtc_time[0] - year    4 digit
        # rtc_time[1] - month   1..12
        # rtc_time[2] - day     1..31
        # rtc_time[3] - weekday 1..7 1=Monday
        # rtc_time[4] - hour    0..23
        # rtc_time[5] - minute  0..59
        # rtc_time[6] - second  0..59
        # rtc_time[7] - yearday 1..366
        # rtc_time[8] - isdst   0, 1, or -1

        # The machine.rtc.datetime() function takes the arguments in the order:
        # (year, month, day, weekday, hour, minute, second, subseconds)
        # __IGNORE_WARNING_M891__
        # https://docs.micropython.org/en/latest/library/machine.RTC.html#machine-rtc
        return """
def set_time(rtc_time):
    import machine
    rtc = machine.RTC()
    rtc.datetime(rtc_time[:7] + (0,))
"""

    ##################################################################
    ## Methods below implement WiFi related methods
    ##################################################################

    def addDeviceWifiEntries(self, menu):
        """
        Public method to add device specific entries to the given menu.

        @param menu reference to the context menu
        @type QMenu
        """
        menu.addSeparator()
        menu.addAction(self.tr("Set Country"), self.__setCountry).setEnabled(
            self._deviceData["wifi_type"] == "picow"
        )

    def hasWifi(self):
        """
        Public method to check the availability of WiFi.

        @return tuple containing a flag indicating the availability of WiFi
            and the WiFi type (picow or pimoroni)
        @rtype tuple of (bool, str)
        @exception OSError raised to indicate an issue with the device
        """
        # picowireless:
        # It seems to take up to 20 sec to detect, that no Pico Wireless Pack is
        # attached. Therefore the command will timeout before.
        command = """
def has_wifi():
    try:
        import network
        if hasattr(network, 'WLAN'):
            return True, 'picow'
    except ImportError:
        try:
            import picowireless
            picowireless.init()
            return True, 'pimoroni'
        except ImportError:
            pass

    return False, ''

print(has_wifi())
del has_wifi
"""
        out, err = self._interface.execute(
            command, mode=self._submitMode, timeout=10000
        )
        if err:
            if not err.startswith("Timeout "):
                raise OSError(self._shortError(err))
            else:
                return False  # pimoroni firmware loaded but no pico wireless present
        return ast.literal_eval(out.decode("utf-8"))

    def getWifiData(self):
        """
        Public method to get data related to the current WiFi status.

        @return tuple of three dictionaries containing the WiFi status data
            for the WiFi client, access point and overall data
        @rtype tuple of (dict, dict, dict)
        @exception OSError raised to indicate an issue with the device
        """
        if self._deviceData["wifi_type"] == "picow":
            command = """
def wifi_status():
    import ubinascii
    import ujson
    import network
    import rp2

    wifi = network.WLAN(network.STA_IF)
    station = {
        'active': wifi.active(),
        'connected': wifi.isconnected(),
        'status': wifi.status(),
        'ifconfig': wifi.ifconfig(),
        'mac': ubinascii.hexlify(wifi.config('mac'), ':').decode(),
        'channel': wifi.config('channel'),
        'txpower': wifi.config('txpower'),
        'country': rp2.country(),
    }
    print(ujson.dumps(station))

    wifi = network.WLAN(network.AP_IF)
    ap = {
        'active': wifi.active(),
        'connected': wifi.isconnected(),
        'status': wifi.status(),
        'ifconfig': wifi.ifconfig(),
        'mac': ubinascii.hexlify(wifi.config('mac'), ':').decode(),
        'channel': wifi.config('channel'),
        'txpower': wifi.config('txpower'),
        'essid': wifi.config('essid'),
        'country': rp2.country(),
    }
    print(ujson.dumps(ap))

    overall = {
        'active': station['active'] or ap['active']
    }
    print(ujson.dumps(overall))

wifi_status()
del wifi_status
"""
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            command = """
def wifi_status():
    import picowireless as pw
    import ubinascii
    import ujson

    def ip_str(ip):
        return '.'.join(str(i) for i in ip)

    station = {
        'active': pw.get_connection_status() not in (0, 7, 8, 9),
        'connected': pw.get_connection_status() == 3,
        'status': pw.get_connection_status(),
        'ifconfig': (
            ip_str(pw.get_ip_address()),
            ip_str(pw.get_subnet_mask()),
            ip_str(pw.get_gateway_ip()),
            '0.0.0.0'
        ),
        'mac': ubinascii.hexlify(pw.get_mac_address(), ':').decode(),
    }
    if station['connected']:
        station.update({
            'ap_ssid': pw.get_current_ssid(),
            'ap_bssid': binascii.hexlify(pw.get_current_bssid(), ':'),
            'ap_rssi': pw.get_current_rssi(),
            'ap_security': pw.get_current_encryption_type(),
        })
    print(ujson.dumps(station))

    ap = {
        'active': pw.get_connection_status() in (7, 8, 9),
        'connected': pw.get_connection_status() == 8,
        'status': pw.get_connection_status(),
        'mac': ubinascii.hexlify(pw.get_mac_address(), ':').decode(),
    }
    if ap['active']:
        ap['essid'] = pw.get_current_ssid()
    print(ujson.dumps(ap))

    overall = {
        'active': pw.get_connection_status() != 0
    }
    print(ujson.dumps(overall))

wifi_status()
del wifi_status
"""
        else:
            return super().getWifiData()

        out, err = self._interface.execute(command, mode=self._submitMode)
        if err:
            raise OSError(self._shortError(err))

        stationStr, apStr, overallStr = out.decode("utf-8").splitlines()
        station = json.loads(stationStr)
        ap = json.loads(apStr)
        overall = json.loads(overallStr)
        try:
            station["status"] = self.__statusTranslations[
                self._deviceData["wifi_type"]
            ][station["status"]]
        except KeyError:
            station["status"] = str(station["status"])
        try:
            ap["status"] = self.__statusTranslations[self._deviceData["wifi_type"]][
                ap["status"]
            ]
        except KeyError:
            ap["status"] = str(ap["status"])
        return station, ap, overall

    def connectWifi(self, ssid, password):
        """
        Public method to connect a device to a WiFi network.

        @param ssid name (SSID) of the WiFi network
        @type str
        @param password password needed to connect
        @type str
        @return tuple containing the connection status and an error string
        @rtype tuple of (bool, str)
        """
        if self._deviceData["wifi_type"] == "picow":
            country = Preferences.getMicroPython("WifiCountry").upper()
            command = """
def connect_wifi(ssid, password, country):
    import network
    import rp2
    import ujson
    from time import sleep

    rp2.country(country)

    wifi = network.WLAN(network.STA_IF)
    wifi.active(False)
    wifi.active(True)
    wifi.connect(ssid, password)
    max_wait = 140
    while max_wait:
        if wifi.status() < 0 or wifi.status() >= 3:
            break
        max_wait -= 1
        sleep(0.1)
    status = wifi.status()
    print(ujson.dumps({{'connected': wifi.isconnected(), 'status': status}}))

connect_wifi({0}, {1}, {2})
del connect_wifi
""".format(
                repr(ssid),
                repr(password if password else ""),
                repr(country if country else "XX"),
            )
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().connectWifi(ssid, password)

        with EricOverrideCursor():
            out, err = self._interface.execute(
                command, mode=self._submitMode, timeout=15000
            )
        if err:
            return False, err

        result = json.loads(out.decode("utf-8").strip())
        if result["connected"]:
            error = ""
        else:
            try:
                error = self.__statusTranslations[self._deviceData["wifi_type"]][
                    result["status"]
                ]
            except KeyError:
                error = str(result["status"])

        return result["connected"], error

    def disconnectWifi(self):
        """
        Public method to disconnect a device from the WiFi network.

        @return tuple containing a flag indicating success and an error string
        @rtype tuple of (bool, str)
        """
        if self._deviceData["wifi_type"] == "picow":
            command = """
def disconnect_wifi():
    import network
    from time import sleep

    wifi = network.WLAN(network.STA_IF)
    wifi.disconnect()
    wifi.active(False)
    sleep(0.1)
    print(not wifi.isconnected())

disconnect_wifi()
del disconnect_wifi
"""
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().disconnectWifi()

        out, err = self._interface.execute(command, mode=self._submitMode)
        if err:
            return False, err

        return out.decode("utf-8").strip() == "True", ""

    def writeCredentials(self, ssid, password):
        """
        Public method to write the given credentials to the connected device and modify
        the start script to connect automatically.

        @param ssid SSID of the network to connect to
        @type str
        @param password password needed to authenticate
        @type str
        @return tuple containing a flag indicating success and an error message
        @rtype tuple of (bool, str)
        """
        command = """
def modify_boot():
    add = True
    try:
        with open('/boot.py', 'r') as f:
            for ln in f.readlines():
                if 'wifi_connect' in ln:
                    add = False
                    break
    except:
        pass
    if add:
        with open('/boot.py', 'a') as f:
            f.write('\\nimport wifi_connect\\n')
    print(True)

modify_boot()
del modify_boot
"""

        if self._deviceData["wifi_type"] == "picow":
            country = Preferences.getMicroPython("WifiCountry").upper()
            secrets = "WIFI_SSID = {0}\nWIFI_KEY = {1}\nWIFI_COUNTRY={2}".format(
                repr(ssid),
                repr(password) if password else '""',
                repr(country) if country else '""',
            )
            wifiConnectFile = "picowWiFiConnect.py"
        else:
            secrets = "WIFI_SSID = {0}\nWIFI_KEY = {1}\n".format(
                repr(ssid),
                repr(password) if password else '""',
            )
            wifiConnectFile = "mpyWiFiConnect.py"
        try:
            # write secrets file
            self.putData("/secrets.py", secrets.encode("utf-8"))
            # copy auto-connect file
            self.put(
                os.path.join(os.path.dirname(__file__), "MCUScripts", wifiConnectFile),
                "/wifi_connect.py",
            )
        except OSError as err:
            return False, str(err)

        # modify boot.py
        out, err = self._interface.execute(command, mode=self._submitMode)
        if err:
            return False, err

        return out.decode("utf-8").strip() == "True", ""

    def removeCredentials(self):
        """
        Public method to remove the saved credentials from the connected device.

        @return tuple containing a flag indicating success and an error message
        @rtype tuple of (bool, str)
        """
        try:
            self.rm("/secrets.py")
        except OSError as err:
            return False, str(err)

        return True, ""

    def checkInternet(self):
        """
        Public method to check, if the internet can be reached.

        @return tuple containing a flag indicating reachability and an error string
        @rtype tuple of (bool, str)
        """
        if self._deviceData["wifi_type"] == "picow":
            command = """
def check_internet():
    import network
    import socket

    wifi = network.WLAN(network.STA_IF)
    if wifi.isconnected():
        s = socket.socket()
        try:
            s.connect(socket.getaddrinfo('google.com', 80)[0][-1])
            s.close()
            print(True)
        except:
            print(False)
    else:
        print(False)

check_internet()
del check_internet
"""
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().checkInternet()

        out, err = self._interface.execute(command, mode=self._submitMode)
        if err:
            return False, err

        return out.decode("utf-8").strip() == "True", ""

    def scanNetworks(self):
        """
        Public method to scan for available WiFi networks.

        @return tuple containing the list of available networks as a tuple of 'Name',
            'MAC-Address', 'channel', 'RSSI' and 'security' and an error string
        @rtype tuple of (list of tuple of (str, str, int, int, str), str)
        """
        if self._deviceData["wifi_type"] == "picow":
            country = Preferences.getMicroPython("WifiCountry").upper()
            command = """
def scan_networks():
    import network
    import rp2

    rp2.country({0})

    wifi = network.WLAN(network.STA_IF)
    active = wifi.active()
    if not active:
        wifi.active(True)
    network_list = wifi.scan()
    if not active:
        wifi.active(False)
    print(network_list)

scan_networks()
del scan_networks
""".format(
                repr(country if country else "XX")
            )

        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().scanNetworks()

        out, err = self._interface.execute(
            command, mode=self._submitMode, timeout=15000
        )
        if err:
            return [], err

        networksList = ast.literal_eval(out.decode("utf-8"))
        networks = []
        for network in networksList:
            if network[0]:
                ssid = network[0].decode("utf-8")
                mac = binascii.hexlify(network[1], ":").decode("utf-8")
                channel = network[2]
                rssi = network[3]
                try:
                    security = self.__securityTranslations[network[4]]
                except KeyError:
                    security = self.tr("unknown ({0})").format(network[4])
                networks.append((ssid, mac, channel, rssi, security))

        return networks, ""

    def deactivateInterface(self, interface):
        """
        Public method to deactivate a given WiFi interface of the connected device.

        @param interface designation of the interface to be deactivated (one of 'AP'
            or 'STA')
        @type str
        @return tuple containg a flag indicating success and an error message
        @rtype tuple of (bool, str)
        @exception ValueError raised to indicate a wrong value for the interface type
        """
        if interface not in ("STA", "AP"):
            raise ValueError(
                "interface must be 'AP' or 'STA', got '{0}'".format(interface)
            )

        if self._deviceData["wifi_type"] == "picow":
            command = """
def deactivate():
    import network
    from time import sleep

    wifi = network.WLAN(network.{0}_IF)
    wifi.active(False)
    sleep(0.1)
    print(not wifi.active())

deactivate()
del deactivate
""".format(
                interface
            )
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().deactivateInterface(interface)

        out, err = self._interface.execute(command, mode=self._submitMode)
        if err:
            return False, err
        else:
            return out.decode("utf-8").strip() == "True", ""

    def startAccessPoint(self, ssid, security=None, password=None, ifconfig=None):
        """
        Public method to start the access point interface.

        @param ssid SSID of the access point
        @type str
        @param security security method (defaults to None)
        @type int (optional)
        @param password password (defaults to None)
        @type str (optional)
        @param ifconfig IPv4 configuration for the access point if not default
            (IPv4 address, netmask, gateway address, DNS server address)
        @type tuple of (str, str, str, str)
        @return tuple containing a flag indicating success and an error message
        @rtype tuple of (bool, str)
        """
        if security is None or password is None:
            security = 0
            password = ""

        if self._deviceData["wifi_type"] == "picow":
            country = Preferences.getMicroPython("WifiCountry").upper()
            if security:
                security = 4  # Pico W supports just WPA/WPA2
            command = """
def start_ap(ssid, security, password, ifconfig, country):
    import network
    import rp2
    from time import sleep

    rp2.country(country)

    ap = network.WLAN(network.AP_IF)
    ap.active(True)
    if ifconfig:
        ap.ifconfig(ifconfig)
    ap.config(ssid=ssid, security=security, password=password)
    sleep(0.1)
    print(ap.isconnected())

start_ap({0}, {1}, {2}, {3}, {4})
del start_ap
""".format(
                repr(ssid),
                security,
                repr(password),
                ifconfig,
                repr(country if country else "XX"),
            )
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().startAccessPoint(ssid, security=security, password=password)

        out, err = self._interface.execute(
            command, mode=self._submitMode, timeout=15000
        )
        if err:
            return False, err
        else:
            return out.decode("utf-8").strip() == "True", ""

    def stopAccessPoint(self):
        """
        Public method to stop the access point interface.

        @return tuple containg a flag indicating success and an error message
        @rtype tuple of (bool, str)
        """
        if self._deviceData["wifi_type"] == "picow":
            return self.deactivateInterface("AP")
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().stopAccessPoint()

    def getConnectedClients(self):
        """
        Public method to get a list of connected clients.

        @return a tuple containing a list of tuples containing the client MAC-Address
            and the RSSI (if supported and available) and an error message
        @rtype tuple of ([(bytes, int)], str)
        """
        if self._deviceData["wifi_type"] == "picow":
            command = """
def get_stations():
    import network

    ap = network.WLAN(network.AP_IF)
    stations = ap.status('stations')
    print(stations)

get_stations()
del get_stations
"""
        elif self._deviceData["wifi_type"] == "pimoroni":
            # TODO: not yet implemented
            pass
        else:
            return super().checkInternet()

        out, err = self._interface.execute(
            command, mode=self._submitMode, timeout=10000
        )
        if err:
            return [], err

        clientsList = ast.literal_eval(out.decode("utf-8"))
        return clientsList, ""

    ############################################################################
    ## RP2 only methods below
    ############################################################################

    @pyqtSlot()
    def __setCountry(self):
        """
        Private slot to configure the country of the connected RP2040 device.

        The country is the two letter country code.
        """
        from ..WifiDialogs.WifiCountryDialog import WifiCountryDialog

        dlg = WifiCountryDialog()
        if dlg.exec() == QDialog.DialogCode.Accepted:
            country, remember = dlg.getCountry()
            if remember:
                Preferences.setMicroPython("WifiCountry", country)

            command = """
import rp2
rp2.country({0})
""".format(
                repr(country)
            )

            out, err = self._interface.execute(command, mode=self._submitMode)
            if err:
                self.microPython.showError("rp2.country()", err)


def createDevice(microPythonWidget, deviceType, vid, pid, boardName, serialNumber):
    """
    Function to instantiate a MicroPython device object.

    @param microPythonWidget reference to the main MicroPython widget
    @type MicroPythonWidget
    @param deviceType device type assigned to this device interface
    @type str
    @param vid vendor ID
    @type int
    @param pid product ID
    @type int
    @param boardName name of the board
    @type str
    @param serialNumber serial number of the board
    @type str
    @return reference to the instantiated device object
    @rtype RP2040Device
    """
    return RP2040Device(microPythonWidget, deviceType)