Expose WiFi Attribute

[brentru]

Exposing wifi attribute so wrapper libraries (AWS IoT, Adafruit IO) which create a minimqtt object can access WiFiManager and ESP32SPI (via client.wifi.esp) attributes.

[ladyada]

what if we end up using this with cell or ethernet?

[brentru]

@ladyada this only effects the check for a ESPSPI_WiFiManager. Other network_manager's (when we make them) would be detected and handled separately.

        network_manager_type = str(type(network_manager))
        if 'ESPSPI_WiFiManager' in network_manager_type:
            self.wifi = network_manager
        else:
            raise TypeError("This library requires a NetworkManager object.")

[ladyada]

yeah but if its exposed, then people would rely on it?

[brentru]

@ladyada I don't think user-code will rely on this....Possibly a better method would be checking the esp's version from code if an esp is used, instead of relying on the MiniMQTT client.

[brentru]

@ladyada I don't think exposing from user-code would be a good idea, since libraries using a MiniMQTT object should be able to check set_psk and set_crt booleans (https://github.com/adafruit/Adafruit_CircuitPython_AWS_IOT/blob/master/adafruit_aws_iot.py#L82) on initialization...

I could pass in the wifi object to the library's init instead, but what if the library is using cellular or ethernet.

[brentru]

Closing in favor of adafruit/Adafruit_CircuitPython_AWS_IOT#4