Unable to find device (SLN-ALEXA-IOT) on alexa app

[hassankml]

Hi, i followed the getting started guide to set up my SLN-ALEXA-IOT but i am unable to find the device on the alexa app. I tried resetting the device, re installing the app and made sure bluetooth and location permissions are on but the device is still not detected and i am unable to proceed with the setup. Any idea what might be causing this?

Best Regards, Hassan

[alexmarin]

Hello,

Unfortunately this is a behavior associated with a manufacturing issue for the dev kit (UART pins not soldered properly, BLE is controller through UART pins, FFS uses BLE ...).

If you have got in the possession of the dev kit through an NXP distributor you should initiate the recall procedure for the dev kit.

Sorry for this, we will verify our entire stock for this problem.

Kind regards,

Alex Marin

[Zzzxxxlll169]

I have 2 devices which have the same issue. Can NXP tech support help?

[amwom]

I have the same behaviour with device out-of-the-box, and also with the default build of sln_alexa_iot_ais_ffs_demo sample app. It seems the problem is with the UART communication to the Bluetooth device - logging the UART tx/rx data shows that the sent message is received back. This could be due to CTRL[LOOPS] being set to 1 but I have checked this not the case.

1324 204024 [HCISU] HCI write:
1325 204024 [HCISU] 01
1326 204024 [HCISU] 03
1327 204024 [HCISU] 0c
1328 204024 [HCISU] 00

1332 204024 [READ_THREAD] HCI read:
1333 204024 [READ_THREAD] 0c
1334 204024 [READ_THREAD] 00
1335 204024 [READ_THREAD] 01

1339 204024 [READ_THREAD] HCI read:
1340 204024 [READ_THREAD] 03

I have tried to send my own random data on the UART and in this case also the tx'd data is read back exactly.

It is mentioned in AIROC™ HCI UART Control Protocol:

1. The PC (MCU) host issues the following standard Bluetooth® HCI_RESET command:
01 03 0C 00
The following response is expected from the CYWxxxxx device within 100 ms:
04 0E 04 01 03 0C 00

The expected response is not being received from the Bluetooth module. Some help in diagnosing further would be appreciated.

[hassankml]

[Alexis_A]

Hello @hassankml,

Could you open the COM port in a terminal and share the log?

Best Regards,

Alexis Andalon

[hassankml]

Hello @Alexis_A

Here is the log file.

I tried resetting to factory settings but i still receive the same message 

Best Regards,

Hassan

[hassankml]

No, i didnt do any changes in the firmware. I plugged the device in and tried to perform the setup but it fails after a few minutes. The LED is blue indicating that its ready to pair. I tried on both ios and android.. 

[Alexis_A]

Hello @hassankml,

Only to confirm, did you make any change in the board firmware? Also, the following document explain in more detail how to work with the Alexa Kit, I would suggest to take a look.

Best Regards,

Alexis Andalon

[tzahiman]

I have exactly the same problem.

But when I've used another "out of the box" EVB' is was OK.

We had used the Jlink for debugging the sln_alexa_iot_ais_ffs_demo example

With same issue and logs

Can you please help me in download the exact source code to the one, used at NXP's factory?