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CC3220SF: Slow connection time to from iPhone to board when board is acting as an access point

Cyril MacDonald
Prodigy 155 points
Part Number: CC3220SF

Hello,

I am using the CC3220SF board to act as an access point, so I can connect to it from an iPhone with a custom app to provision it.

I am noticing very long delays (30-40 seconds) when connecting the iPhone to the SSID broadcast by the board. The connection starts working when the icon on the phone switches finally switches from LTE to the Wifi icon.

It is not slow to connect to other access points.

Are there any settings on the board in the SimpleLink API I can tweak to speed up the connection time?

The slow connection time is going to be a major annoyance to end users.

The software I have on the board isn't doing anything heavy, it pretty much just starts up and enters provisioning mode.

cyril

  • 0
    TI__Mastermind 38980 points
    Hi Cyril,

    Are you using the Wi-Fi Starter Pro app, or are you trying to manually connect via the browser URL?

    Due to iOS permission settings, users cannot connect to the device's AP directly from the app. The user must manually select the Wi-Fi network in their settings menu before returning to the provisioning app. Is your iOS device not switching from LTE to Wi-Fi even after connecting to the Wi-Fi network?

    The SimpleLink device has no control over how fast the iPhone connects to it's AP. I tried running the AP provisioning example with the lastest Wi-Fi Starter Pro on an iPhone 7 with iOS 12.1.4, and it was fairly quick (a few seconds) to print out to the terminal that the profile was added and connected. The part that took the longest was the app's profile confirmation step, which can be customized by the developer.

    Best regards,
    Sarah
  • 0 in reply to Sarah P
    Prodigy 155 points
    Hi Sarah,

    I am just opening up the builtin Settings app in iOS and choosing the simplelink device as my access point.

    It is taking about 40 seconds to fully connect to the SimpleLink access point - for the network icon to flip on the phone.

    It looks like some network services are available and some are not during this time. The first action I was taking to find the ip address of the simplelink device (from a well known name) was not working until it was fully initialized, but it looks like the simple link http server is available very soon (when addressed directly by IP address).

    I'll see if I can find an alternate method of finding the simplelink's IP address.

    cyril