Immediate Alert Client Application + Smartphone

RE: Immediate Alert Client Application + Smartphone

fatemeh ghasemi — Tue, 22 Oct 2019 18:33:09 GMT

Hi, Regarding your reply, can you tell me how I can add the predefined Immediate Alert service in a new server?

RE: Immediate Alert Client Application + Smartphone

Gaurav — Thu, 12 Apr 2018 10:05:22 GMT

Hi, Rune!

Thanks for your advice. I understand.
Since I just want to develop a quick POC for now, so such quick-fixes could be handy and that's why wanted to check with you.
But yeah, as you mentioned, the mass-produced product must have a custom service with a formal UUID.

Anyway, I could finally manage to get the GPIO status on the smartphone.
So, I think we can conclude this.

Thank you.

RE: Immediate Alert Client Application + Smartphone

Rune Holmgren — Wed, 11 Apr 2018 13:03:02 GMT

If it's only a single sensor I guess sending "no alert" and "mild alert" is a reasonable enough way of indicating to a phone what state the sensor is in. Note that you can't just send arbitrary values if you want to be within the specification of the service. If you want to make changes to the way the service and/or characteristics work you should create a new UUID for which there is no specification and you may do whatever you want. For testing purposes you can, of course, do whatever you want to the service, it's only releasing a mass produced product which would require a proper UUID.

A more correct way of reporting the state of a sensor would be to create a custom service with a "sensor state" characteristic which would simply be an integer which is 0 or 1 depending on the sensor state.

Best regards,
Rune Holmgren

RE: Immediate Alert Client Application + Smartphone

Gaurav — Tue, 10 Apr 2018 10:59:49 GMT

Hi! Rune,

I have a follow-up question.

Now, I want to modify the Immediate Alert Client Application.
Currently, there are three states in the example:
-0x00: No Alert
-0x01: Mild Alert
-0x02: High Alert
Now I plan to modify these state values itself. How do you suggest to proceed with it?

Basically, the application simply requires me to have a sensor(that gives binary output only) connected to the nRF52832 module and display the sensor value on the smartphone.
So, I plan to attach the sensor with one of the GPIO's (input) and send the GPIO status via the Immediate Alert Client Application to the smartphone.

If you think I should try something else, please let me know.

Thank you.

RE: Immediate Alert Client Application + Smartphone

Gaurav — Mon, 09 Apr 2018 10:21:51 GMT

Hi! Rune,

Thanks for your response.
Looks like this testing method is for nRFConnect desktop version.

But anyway, in smartphone app also by adding the predefined Immediate Alert service in a new server, I could get it working.

Thanks again for your help.

Regards,

Gaurav.

RE: Immediate Alert Client Application + Smartphone

Rune Holmgren — Fri, 06 Apr 2018 14:27:34 GMT

Hi,

All nRF5 SDK examples have a testing section in the documentation explaining how to get the example up running. Below you can see the testing section for the Immediate Alert Client.

Best regards,
Rune Holmgren