Bluetooth device to send signals to Android phone?

Question

Android

Hello. There is an idea to make a small device with a button, when pressed, a signal would be sent via Bluetooth to an Android smartphone, and some actions would take place on the phone. Now the actual questions:
1) For this case, you need a device with a Bluetooth transmitter. Do I need to have a microcontroller inside as well?
2) If yes, then let's take the SimpleLink CC2650 device. Has bluetooth and microcontroller. How to combine this device with a button? Well, that is, in my understanding, somehow you need to attach a button and send a signal from this device to a smartphone. How to process this signal on a smartphone? Write your application?
Actually, you can describe the steps on how to implement it or where to dig.
Actually, it can be more simply formulated as follows: there is a SimpleLink CC2650 or an analogue. What's next?

Answer 1

article

Answer 2

1. SimpleLink CC2650 is fine. It is better to take the CC2650MODA variation (a miniature board with a controller and an antenna). In the TI examples there is an example of ProjectZero , there is also work with buttons and pins of the board itself, so there will be no problems in mastering this equipment.
2. To work only with the button, it is enough to use BLE Scanner . It displays the possible characteristics and attributes, as well as their states.
If you need to control the phone, then you already need to write your own application, depending on the required tasks.
An example of an application from a cat lover : developer.alexanderklimov.ru/android/theory/ble.php