RE: nrf51822 ble read the data send from smartphone

Vebjørn — Wed, 04 Mar 2015 15:57:42 GMT

Are you using the nRF51822 Evaluation Kit?

I would recommend to start with the ble_app_uart example in the SDK. It has a corresponding android app which you can download the source code for here.

In the UART example, in main.c there is a nus_data_handler function which you can modify to handle incoming data from the mobile app.

You can then modify the mobile app so it has a button that sends the text "right", and in the handler function above you can check if p_data = "right" and then call a function which turns the motor to the right (you would have to write this function yourself, though. Try searching for PWM here on devzone, and you will find a lot of good answers)

RE: nrf51822 ble read the data send from smartphone

Victor Nascimento — Wed, 04 Mar 2015 15:52:54 GMT

Welcome, Peter

BLE introduces a new way of communicating. The smartphone will act as a Central, while the board will act as a Peripheral. The peripheral has to have a service with characteristics which can then be accessed from the central. In the smartphone, you have to:

Discover your peripheral and its services
Find its characteristics
Write a value to a characteristic

The peripheral then will be notified when the write occurs, so you can take further actions.

You can find many examples on the SDK files.

Regards,