Programming nrf5e with accelerometer

RE: Programming nrf5e with accelerometer

Trinh Kieu — Mon, 31 Jul 2023 08:18:22 GMT

Thank you, I had the same problem.

https://www.sungoldsolar.com/

RE: Programming nrf5e with accelerometer

Scott--R — Tue, 29 Sep 2020 12:49:25 GMT

Hi Milen. Did you ever get this working? I would like to do something similar with the same device from Moko, only I want it to START advertising when it detects motion, not stop.

RE: Programming nrf5e with accelerometer

Amanda Hsieh — Wed, 04 Dec 2019 12:18:26 GMT

Hi,

[quote user="yanchevm"]1. In the example https://github.com/NordicPlayground/nRF52-Bluetooth-Course, I'm creating in step by step new service. Do I need to be connect to the device in order to use this service ?[/quote]

In the tutorial, you need the nRF Connect app (for mobile/Desk ).

[quote user="yanchevm"]2. What I need is without connecting the device, when it advertise to be able to read the data. Is there any example for that ?[/quote]

Please see this post.

[quote user="yanchevm"]3. Is there any example of how to configure and handle accelerometer events ?[/quote]

There is no example of your requirement on our side. You could create an event and handle it.

The https://github.com/NordicPlayground/nRF52-Bluetooth-Course#step-5---handling-events-from-the-softdevice shows how to handle the event from Softdevice.

-Amanda H

RE: Programming nrf5e with accelerometer

yanchevm — Tue, 03 Dec 2019 20:15:36 GMT

I finally manage to make it compile and work. The problem was in the header file:

The definition of the macros needs to be at the top of the header file:

#define BLE_CUS_DEF(_name)
static ble_cus_t _name;

That solves my problem with ‘m_cus’ undeclared (first use in this function) error.

To continue from here, can you please clarify two things to me:

1. In the example https://github.com/NordicPlayground/nRF52-Bluetooth-Course, I'm creating in step by step new service. Do I need to be connect to the device in order to use this service ?

2. What I need is without connecting the device, when it advertise to be able to read the data. Is there any example for that ?

3. Is there any example of how to configure and handle accelerometer events ?

Regards,

Milen

RE: Programming nrf5e with accelerometer

Amanda Hsieh — Thu, 28 Nov 2019 12:30:02 GMT

Hi,

The tutorial is developed by SDK_15.0.0. You should Download nRF5_SDK_15.0.0_17b948a from the download page and extract the zip to your drive, e.g. C:\NordicSemi\nRF5_SDK_15.0.0_a53641a.

[quote user="yanchevm"]What else should I configure ? Where this m_cus defined ?[/quote]

add a custom service instance called m_cus, i.e. add the following line below the defines in main.c

BLE_CUS_DEF(m_cus);

-Amanda H.

RE: Programming nrf5e with accelerometer

Nguyen Hoan Hoang — Thu, 28 Nov 2019 03:47:58 GMT

Try tutorial from these pages instead https://embeddedsoftdev.blogspot.com/2018/01/

RE: Programming nrf5e with accelerometer

yanchevm — Wed, 27 Nov 2019 18:45:09 GMT

Hi Amanda,

I'm using SDK v16.0.0.

I have installed SDK v15.0.0 and the GIt example is compiled now. However, I'm still getting issues with the step by step guide. I notices that in the Git example, I have nRF_BLE_Serives folder and my ble_cus.c file is there, however, when I'm making the files manually, both files (.c and .h) are in the Application folder.

Here is when I'm manually creating the files and I hit ‘m_cus’ undeclared (first use in this function) error.

Here is how it look in the Git example. It is compiled without an issues.

What else should I configure ? Where this m_cus defined ?

Regards,

MIlen Yanchev

RE: Programming nrf5e with accelerometer

Amanda Hsieh — Mon, 25 Nov 2019 06:55:42 GMT

Hi Milen,

Which SDK are you using?

Did you clone that repo into SDK v15.0.0/examples/ble_peripheral?

-Amanda H.

RE: Programming nrf5e with accelerometer

yanchevm — Sun, 24 Nov 2019 21:28:53 GMT

Thanks for sharing this course Amanda. It's really useful for someone new to see the big picture.

However, the example doesn't work. Following the step by step guide, when I try to compile it, I get - ‘m_cus’ undeclared (first use in this function).

Then I clone the Git repo and try again, this time I hit another issue with the logging header.

- /home/components/libraries/experimental_log/src/nrf_log_backend_rtt.c: No such file or directory

Can you please fix it ?

Regards,

Milen Yanchev

RE: Programming nrf5e with accelerometer

Amanda Hsieh — Tue, 19 Nov 2019 07:49:03 GMT

Hi Milen,

There is no example of your requirement. You could refer to the nRF52-Bluetooth-Course tutorial and use an event handler to stop advertising (sd_ble_gap_adv_stop() function).

-Amanda H.

RE: Programming nrf5e with accelerometer

yanchevm — Sun, 17 Nov 2019 21:37:49 GMT

Amanda, thanks for the provided posts, but I don't think they are enough for a beginner to write something.

For example, in the post for stopping the advertising, they are explaining some functions that eventually can stop it, but I don't see anything for accelerometer and how it can be integrated with this ble_app_uart project and be used as stopping flag.

I will really appreciate if there is something like that for a beginners.

Regards,

Milen Yanchev

RE: Programming nrf5e with accelerometer

yanchevm — Mon, 11 Nov 2019 21:57:18 GMT

Thanks a lot for your info! I will check the posts

RE: Programming nrf5e with accelerometer

Amanda Hsieh — Mon, 11 Nov 2019 14:07:26 GMT

Hi,

[quote user=""]What I need is just the BLE to advertise simple encrypted UUID[/quote]

Please see this post and this post.

[quote user=""]and when the accelerometer detects movement, the device to stop advertising.[/quote]

Please see this post.

-Amanda H.