i.MX ProcessorsのトピックRe: BLE module Central role testing

BLE module Central role testing

EmbeddedTech — Thu, 09 Sep 2021 02:55:43 GMT

Hi,

Is there any way to test the central role of the BLE module of iMXRT1060 by receiving data other than using another iMXRT board with BLE module as a peripheral? Does the NXP IoT toolbox app supports this?

Thanks.

Re: BLE module Central role testing

kerryzhou — Thu, 09 Sep 2021 09:47:51 GMT

Hi @EmbeddedTech ,

Do you mean you want to use the MIMXRT1060-EVK board realize the BLE function?

If yes, you can refer to the SDK code about the Bluetooth:

\SDK_2_10_0_EVK-MIMXRT1060\boards\evkmimxrt1060\edgefast_bluetooth_examples

But you still need other modules:

Hardware requirements
=====================
- Micro USB cable
- evkmimxrt1060 board
- Personal Computer
- One of the following modules:
- AzureWave AW-AM457-uSD
- AzureWave AW-CM358-uSD
- K32W061

More details, please check the SDK related code, it contains the central examples.

About IoT toolbox app, I didn't find the SDK use it directly. It is using the printf to test.

Wish it helps you!

If you still have questions about it, please kindly let me know.

More details, please check the code.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Mon, 13 Sep 2021 02:05:49 GMT

Hi Kerry,

I have already tried the edgefast bluetooth SDK examples. I have a iMXRT1060 EVK and a Wifi+BLE module. My board will be performing the central role by receiving data from the peripheral. Currently I do not have the peripheral module which will be sending the data to my board. Is there any way I can test the central role in my board by receiving the data? Is the NXP IoT app designed only to receive data or can it also send data by acting as a peripheral?

Thanks.

Re: BLE module Central role testing

kerryzhou — Mon, 13 Sep 2021 09:57:44 GMT

Hi @EmbeddedTech ,

As you don't have any other BLE board or the modules to as the BLE point to connect with your MIMXRT1060-EVK+Wifi+BLE module, so, you want to find any other phone based APP to test the related function, right?

If yes, I will help you to check with our related team, whether we have any app like IOT toolbox, or the PC tool can use it directly.

Please help to confirm your requirement,then I will help you to check it internally.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Tue, 14 Sep 2021 01:11:45 GMT

Hi Kerry,

Yes you are correct. I have only one board which will be central module. To test the central functionality I want to know if there is any phone based application which will act as a peripheral to send data to my board.

Thanks.

Re: BLE module Central role testing

kerryzhou — Tue, 14 Sep 2021 03:00:51 GMT

Hi @EmbeddedTech ,

Do you have andriod phone?

If yes, download "nRF Connect" APP, this can actor as peripheral.

Please try it on your side, if you meet any issues, just let me know.

And, please also tell me which module you are using in the I.MXRT board.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Tue, 14 Sep 2021 05:14:52 GMT

Hi Kerry,

Thank you for the quick response. I have an ios phone and downloaded the 'nRF connect' app. It has the peripheral functionality. I tried running the HT(Health thermometer) Service. I get the following messages in the terminal.

Scanning started
[DEVICE]: 41:84:8D:5E:10:F2 (random), AD evt type 0, AD data len 30, RSSI -47
A Connected to peer: 41:84:8D:5E:10:F2 (random) Found device: ò^
Starting service discovery
Discover complete
Disconnected reason 0x13

It looks like it is connecting to the board but getting disconnected due to timeout.

What could be the reason? Also is it possible to send some default temperature values?

I am using iMXRT1060 EVK + ublox JODY W263-01A module.

Thanks.

Re: BLE module Central role testing

kerryzhou — Tue, 14 Sep 2021 09:27:20 GMT

Hi @EmbeddedTech ,

Seems your ublox JODY W263-01A module is not the SDK mentioned module, whether your module also using the NXP wifi/BLE chip?

BTW, you mentioned, It looks like it is connecting to the board but getting disconnected due to timeout.

Could you please give me some picture about your mobile-phone screen, which indicate the disconnect?

I will find time to get the module and test it on my side.

Best Regards,

kerry

Re: BLE module Central role testing

EmbeddedTech — Wed, 15 Sep 2021 03:50:37 GMT

Hi Kerry,

The ublox JODY W263 uses the NXP 8987 chipset, which is same as Azurewave AW-CM358SM.

Please find the sequence in the attached screenshots from the debugger. I am not sure if my understanding is correct. Please clarify.

Thanks.

Re: BLE module Central role testing

kerryzhou — Thu, 16 Sep 2021 10:00:08 GMT

Hi @EmbeddedTech ,

Please keep patient, I will find a Azurewave AW-CM358 to test it.

Any updated information, will let you know.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Fri, 17 Sep 2021 01:59:24 GMT

Thanks Kerry. I will wait for your reply.

Re: BLE module Central role testing

kerryzhou — Mon, 27 Sep 2021 09:52:44 GMT

Hi @EmbeddedTech ,

Sorry for my later reply.

I just find the AzureWave AW-CM358-uSD board, but my borrowed board seems has issues, as my sd_wifi_init is failed, and I just borrowed one AW-CM358-uSD board.

So, please give me more time, I will try other method to test it, maybe use the K32W061 as the board to test the Bluetooth.

Any updated information from my side, I will let you know.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Tue, 28 Sep 2021 01:45:31 GMT

Thanks Kerry. I will wait for the results of your testing.

Re: BLE module Central role testing

kerryzhou — Tue, 28 Sep 2021 08:20:28 GMT

Hi @EmbeddedTech ,

Thanks for your patient. Also thanks for our my wireless mcu colleague's help (da li) nxf56274

I already finish the testing, please follow me!

1. app_config.h need to select CM358

/*#define WIFI_BOARD_AW_AM457*/
#define WIFI_BOARD_AW_CM358
//#define K32W061_TRANSCEIVER

2. About the phone configuration

From your test result, seems you just add the advertiser, didn't add server. Please check the following picture:

This is my test result:

You can find the RT chip can connect to the peripheral HT from phone, but you may find it didn't get the temperature data.

This is caused by the "nRF Connect" health thermometer service, as the intermediate Temperture even select NOTIFY, but it didn't works, so I think the app has the NOTIFY function limit.

As I also use another phone which work as the central role, it also can't get the data, then I use read to get the data:

So, my suggest is, if you just want to check the RT BLE central role with phone, you can test the connection, but to the data get, you can add code to read the data instead of the notify.

Anotherway, I suggest you use one of our FRDM-KW38 which works as peripheral HT:

https://www.nxp.com/design/designs/freedom-development-kit-for-kw39-38-37-mcus:FRDM-KW38

Then download the peripheral HT project, it also can works OK with RT+AW_CM358.

This is the test log:

This KW board can help you ack as the periphery for the testing.

Wish it helps you!

If you still have question about it, please kindly let me know.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Wed, 29 Sep 2021 03:38:00 GMT

Hi Kerry,

Thanks a lot for the effort and the time to help me with the issue.

I was able to test to the point which you have mentioned using my hardware. It was subscribed to the HTS.

Is there any document for me to refer to do the server settings for a particular service?

Also can you throw me some light on the code which I should modify to read the data?

Thanks again for your help.

Re: BLE module Central role testing

kerryzhou — Wed, 29 Sep 2021 07:01:38 GMT

Hi EmbeddedTech,

To be honest, I recommend you find an normal bluethooth peripheral for the testing.

As you know, the heath temp need to use the notify to let the central know the temp data, but the phone side app can't change it automatically, even you use the read to read it, the data is fixed.

From your test result, you central scan and establish connection are all works, now, it's better to find a normal peripheral for the testing.

That's why I recommend you use FRDM-KW series

https://www.nxp.com/design/designs/freedom-development-kit-for-kw39-38-37-mcus:FRDM-KW38

This board is helpful to your testing.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Wed, 29 Sep 2021 07:19:45 GMT

Hi Kerry,

Ok, I will try to get one FRDM-KW series board to do further testing.

Can the iMXRT1060 SDK peripheral ht code be used directly on the FRDM-KW board?

Thanks.

Re: BLE module Central role testing

kerryzhou — Wed, 29 Sep 2021 07:30:08 GMT

Hi @EmbeddedTech

KW38 has it's own SDK, it has a lot of BLE code, you just need to download the related SDK code is OK:

This board is easy to use. You can let it to assist your RT BLE testing.

Best Regards,

Kerry

Re: BLE module Central role testing

EmbeddedTech — Wed, 29 Sep 2021 07:44:50 GMT

Hi Kerry,

Thanks a lot for your help. I will try with the FRDM-KW series board.

Re: BLE module Central role testing

EmbeddedTech — Wed, 29 Sep 2021 09:31:48 GMT

Hi Kerry,

Is it ok to use QN9090 kit instead of KW38?

Thanks.