NFC issue when migrating to SDK11

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Mon, 10 Sep 2018 13:16:12 GMT

I took a fresh new ble_app_uart project and a fresh record_url and copied the code and dependency into the ble example, and the same issue occurs. When the code executes nfcSetup it just hangs.
I started a new topic regarding this problem here:
devzone.nordicsemi.com/.../sdk11-nfc-ble-uart-now-working

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Thu, 06 Sep 2018 13:25:11 GMT

The moment the ret_val = nfcSetup(nfc_callback, NULL); is executed the code execution is halted, it does not even return an error message.

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Tue, 04 Sep 2018 11:24:45 GMT

Looks like it does work better when I erase it with nrfjprog instead of nrfgo, but I can't confirm yet 100%.
Tho I still can't get the nfc code to run in the project itself, I think it might be a clock issue, here are my configs:
#define HAL_NFC_ENGINEERING_A_FTPAN_WORKAROUND
#define HAL_NFC_ENGINEERING_BC_FTPAN_WORKAROUND

#define CLOCK_ENABLED 0 (setting it to 1 makes no difference)

#define NRF_CLOCK_LFCLKSRC {.source = NRF_CLOCK_LF_SRC_RC,
.rc_ctiv = 12,
.rc_temp_ctiv = 0,
.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM}

RE: NFC issue when migrating to SDK11

Martin Lesund — Mon, 03 Sep 2018 12:11:37 GMT

Hi again,

I just want to confirm something,

Could you erase all on the chip and re-flash?

use cmd and type "nrfjprog -e" and then flash the device with the correct application.

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Fri, 31 Aug 2018 12:15:48 GMT

Huh, works fine.
Can you zip the entire sdk project with the example code and send it?

Edit: It broke after 2 mins. :/
Flashing the hex file again and restarting the board does not help.

RE: NFC issue when migrating to SDK11

Martin Lesund — Fri, 31 Aug 2018 12:11:36 GMT

devzone.nordicsemi.com/.../nrf52832_5F00_xxaa.hex

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Fri, 31 Aug 2018 09:45:29 GMT

I managed to bodge over the hal_nfc_t2t.c from sdk12 to sdk11, but when I build it it nfc wont work at all.

Edit: You mentioned it worked for you on sdk11, can you send me the hex file you used?

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Thu, 30 Aug 2018 17:17:00 GMT

I tried that, but then a bunch of other errors appeared.
Edit: Will again.

RE: NFC issue when migrating to SDK11

Martin Lesund — Thu, 30 Aug 2018 12:56:25 GMT

If there are some defines that are needed to use hal_nfc_t2t.c from a newer SDK, then you could add the same in SDK 11 version of "sdk_config.h", which is the "nrf_drv_config.h" file.

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Thu, 30 Aug 2018 11:59:28 GMT

I did such a thing before to fix another bug, but I can't copy that file since sdk11 does not use the new system with the sdk_config.h and a lot of other things have been changed. SDK12 seems to be right where a lot of changes occurred so going from 11 to 12 takes some work.
SDK11 does not seem to even have T4T.

Edit: A weird thing I found is that when I would copy over my old preview libraries that I've previously patched into the freshly downloaded SDK11 it would not work at all. What else is there affecting the project behavior except the libraries and the main.c code itself?

RE: NFC issue when migrating to SDK11

Martin Lesund — Thu, 30 Aug 2018 11:44:29 GMT

Hi Dajgoro,

I saw that you had a similar case earlier (case id: 201644) and we recommended you to migrate the hal_nfc_t2t.c file from SDK 14 to 11.

Apparently there was found a bug in the T4T hal (and in the T2T hal) in sdk14.

Maybe you can try with the attached updated t4t hal, and see if that solves the issue. The fix is related to HAL_NFC_ENGINEERING_BC_FTPAN_WORKAROUND.devzone.nordicsemi.com/.../hal_5F00_nfc_5F00_t4t.c

The bug and fix is in the nrf_nfct_field_event_handler(), you can compare this file to the one included in SDK15.

I am not sure whether replacing this file will affect something else. In general we recommend to port NFC related files to SDK15, as there were some bug fixes (in addition to this one).

(similar thread)

RE: NFC issue when migrating to SDK11

Martin Lesund — Thu, 30 Aug 2018 11:19:17 GMT

Understood, I will do some digging.

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Thu, 30 Aug 2018 11:05:08 GMT

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.

RE: NFC issue when migrating to SDK11

Martin Lesund — Thu, 30 Aug 2018 11:00:46 GMT

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?

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Thu, 30 Aug 2018 10:36:49 GMT

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.

RE: NFC issue when migrating to SDK11

Martin Lesund — Wed, 29 Aug 2018 12:25:14 GMT

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?

RE: NFC issue when migrating to SDK11

Dajgoro Labinac — Wed, 29 Aug 2018 09:35:20 GMT

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?

RE: NFC issue when migrating to SDK11

Martin Lesund — Wed, 29 Aug 2018 09:25:10 GMT

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?