Fix ESP32SPI

[justmobilize]

Updates to adafruit_azureiot/device_registration.py and adafruit_azureiot/iot_mqtt.py to take passed in ssl_context. This adds support back for ESP32SPI.

Tested a few examples, this was my main testing routine (toggling USE_ONBOARD). Tested using a UM FeatherS3 + AirLift Featherwing (for ESP32SPI tests):

USE_ONBOARD = True

import json
import os
import rtc
import supervisor
import time

import adafruit_connection_manager
import adafruit_logging
import adafruit_ntp
from adafruit_azureiot import IoTCentralDevice


wifi_ssid = os.getenv("CIRCUITPY_WIFI_SSID")
wifi_password = os.getenv("CIRCUITPY_WIFI_PASSWORD")
azure_id_scope = os.getenv("AZURE_ID_SCOPE")
azure_device_id = os.getenv("AZURE_DEVICE_ID")
azure_primary_key = os.getenv("AZURE_PRIMARY_KEY")

print("Connecting to WiFi...")
if USE_ONBOARD:
    print("Using on-board")
    import wifi

    radio = wifi.radio
    radio.connect(wifi_ssid, wifi_password)

else:
    print("Using esp32spi")
    import board
    import busio
    import digitalio
    from adafruit_esp32spi.adafruit_esp32spi import ESP_SPIcontrol

    esp32_cs = digitalio.DigitalInOut(board.D13)
    esp32_ready = digitalio.DigitalInOut(board.D11)
    esp32_reset = digitalio.DigitalInOut(board.D12)
    spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
    radio = ESP_SPIcontrol(spi_bus, esp32_cs, esp32_ready, esp32_reset)
    radio.connect_AP(wifi_ssid, wifi_password)
print("Connected to WiFi!")

pool = adafruit_connection_manager.get_radio_socketpool(radio)
ssl_context = adafruit_connection_manager.get_radio_ssl_context(radio)

def get_time():
    if USE_ONBOARD:
        ntp = adafruit_ntp.NTP(pool)
        rtc.RTC().datetime = ntp.datetime
    else:
        now = radio.get_time()
        now = time.localtime(now[0])
        rtc.RTC().datetime = now
    print(rtc.RTC().datetime)


if time.localtime().tm_year < 2022:
    print("Setting System Time in UTC")
    # asking for time right after connecting the esp32spi often fails
    time.sleep(5)
    get_time()
else:
    print("Year seems good, skipping set time.")

device = IoTCentralDevice(pool, ssl_context, azure_id_scope, azure_device_id, azure_primary_key)

print("Connecting to Azure IoT Central...")
device.connect()
print("Connected to Azure IoT Central!")

azure_clock = 0
i = 0

while True:
    try:
        if azure_clock >= 10:
            i += 1
            print("getting ntp date/time")
            get_time()
            time.sleep(2)
            print("getting msg")
            message = {"value": i, "use_onboard": USE_ONBOARD}
            print(f"sending json: {message}")
            device.send_telemetry(json.dumps(message))
            print("data sent")
            azure_clock = 0
        else:
            azure_clock += 1
        device.loop()

    except (ValueError, RuntimeError, OSError, ConnectionError) as e:
        print("Network error, reconnecting\n", str(e))
        supervisor.reload()
        continue

    time.sleep(1)
    print(azure_clock)

fixes #55

[justmobilize]

@dhalbert and @brentru. Updates as promised

[brentru]

Test routine and associated code looks great, thanks! I have one packaging question.

[justmobilize]

@dhalbert any changes you want?