Tracking dependency changes for ESP32-S2 and CP7

[askpatrickw]

I've been trying out each of the underling dependencies for Adafruit_CircuitPython_AzureIoT on ESP32-S2 builds on a FeatherS2 and here are the known issues so far in dependencies.

This isn't a complete list but once these are closed or have workarounds or code in branches I'll keep trying.

• [Requests update to work with onboard WIFI is Merged - PR No. 31
• Binascii simple test ran fine
• RTC Core module - Merged PR No. 3422
• MiniMQTT CPython socket compatibility

I'm no longer sure this is needed

• NTP Library needs modification to work with onbooard WiFi
  • Scott is working on this in "Use UDP to talk to NTP servers" : https://github.com/tannewt/Adafruit_CircuitPython_NTP/tree/raw_ntp, PR on the way Raw ntp tannewt/Adafruit_CircuitPython_NTP#1
  • It will also require UDP support in CP: ESP32-S2: Add UDP with recvfrom_into and sendto circuitpython#3708

I see NTP in the samples, but not where any time or rtc is being used in the library so maybe it is not needed.

[brentru]

@askpatrickw Since UDP support has been merged in, are we waiting for the CircuitPython_NTP library to be updated?

Possibly @jimbobbennett could shine some light on the requirement for NTP in Azure IOT.

[askpatrickw]

Actually, now I can see where the current time is being used. @jimbobbennett please correct if I'm wrong.

To use this library, you will need to create an ESP32_SPI WifiManager, connected to WiFi. You will also need to set the current time, as this is used to generate time-based authentication keys. One way to do this is via the Adafruit CircuitPython NTP library ..

https://github.com/adafruit/Adafruit_CircuitPython_AzureIoT/blob/master/adafruit_azureiot/iotcentral_device.py#L130
uses is to set the token_expiry token_expiry = int(time.time() + self._token_expires)

So the library doesn't need NTP but all the examples use it.

[askpatrickw]

I pushed a PR to Tannewt to complete the NTP work he started. not 100% necessary for azure iot library, but the examples will work with it. tannewt/Adafruit_CircuitPython_NTP#1

[jimbobbennett]

The NTP library is only used in the examples to set the time as that is needed when generating the keys to authenticate with IoT Hub.

[bluejazzCHN]

Actually, now I can see where the current time is being used. @jimbobbennett please correct if I'm wrong.

To use this library, you will need to create an ESP32_SPI WifiManager, connected to WiFi. You will also need to set the current time, as this is used to generate time-based authentication keys. One way to do this is via the Adafruit CircuitPython NTP library ..

https://github.com/adafruit/Adafruit_CircuitPython_AzureIoT/blob/master/adafruit_azureiot/iotcentral_device.py#L130
uses is to set the token_expiry token_expiry = int(time.time() + self._token_expires)

So the library doesn't need NTP but all the examples use it.

yes the library doesn't need NTP directly, just require time to get current time. but in order to keep current time accurately so
call ntp.set_time().

[brentru]

@askpatrickw MiniMQTT is now compatible with CP6 and ESP32-S2 sockets. Are you going to create a PR to update this library to reflect the new API?

[askpatrickw]

@brentru woot!!

I may not get to it this week, but 100% Yes I will give it a go!

[slyons]

This seems to be an issue still. Any chance someone could take a peek at this again?

[askpatrickw]

@slyons, @jimbobbennett I have a PR in progress on this.
#37

Lots of samples to test, but for ESP32S2 boards (native_networking) IoT Hub and IoT Central simple samples worked.