NFC issue when migrating to SDK11

[Dajgoro Labinac]

Hi,

I wrote the firmware in SDK 11 preview, and when migrating it to SDK 11 the NFC code does not work, also it seems when the NFC startup code is executed none of the GPIO interrupts work either.
The NFC code is same as in the example.

What could be causing the problem?

[Martin Lesund]

Hi Dajgoro,

If you look at the release notes for SDKv11, you can see that there has been some changes to the NFC library.

The reason for why the NFC is not working for you is a bit tricky to say based on the information you have shared.

I would suggest that you try to debug your application and maybe share some error logs which could narrow down what could be the issue.

 

When you say: "The NFC code is same as in the example." Which NFC example in SDKv11 are you referring to?

Do you have issues running the unmodified NFC examples from SDKv11?

[Dajgoro Labinac]

Hi,

I spent more time with it, there is nothing wrong with the gpio interrupts after all, its just that the initialization of those happens after the nfc code which seems to glitch.

I tried the bare nfc example from sdk11 and it does not work either. But when I try the sdk12 example it works.

Edit: I tried an older copy of sdk11 that i had and its the same problem, won't work.
Can you verify that the nfc example works on sdk11?

[Martin Lesund]

Hi Dajgoro,

I ran the Launch App Example from SDK v11 without any trouble.

Could you try to download a fresh copy of SDKv11 if you have to use that, and try again?

[Dajgoro Labinac]

I tried the sdk11 you linked me, and things got even more weird.
So the nfc in the sdk11 you linked works intermittently.
Sometimes it reads the nfc url with the phone, reads it a few times then it stops working.
Flashing it again with the same hex has no effect. But then suddenly it works for a bit again and so on..
While with the sdk12 it works every time, the moment I come close with the phone to the board it reads the url.
I tried swapping the two hex many times, but the sdk11 keeps behaving randomly and I can't figure out why.

[Martin Lesund]

Hi Dajgoro,

I cannot pin point directly what the issue is with the sdkv11 example without doing some digging, but I do not see the reason if you can use SDKv12 or newer. The NFC was in it's earlier stages at sdk11 and there has been bug fixes and improvements through the updated SDK versions.

Is it necessary that you use SDKv11? Why do you not want to use the newest SDKv15?

[Dajgoro Labinac]

The issue is that the firmware has been in development for more than 2 years on SDK11 preview and porting it now to a newer SDK would take some work, and since this is product somebody has to pay for development time. So fixing the SDK11 is the cheapest solution.

[Martin Lesund]

Understood, I will do some digging.