how to send data from nRF52832 to phone

[Kaito]

now i use nRF52832 and my using paccage is SDK14.0.0 i could send data from phone to nRF52832. next i wanna send data from nRF52832 to phone. but i don't know where to change in the source code. What should i do?

thank you in advanced

[Joakim Jakobsen]

Hi Kaito!

There is several ways to do this. You can send some data to your phone after a keypress, at a certain event or set up a timer and send data at a fixed interval etc. I also don't know what type of data you want to send.
There are several examples in the SDK that can send data to your phone. But you can take a look at the ble_app_uart example, and the way it is done there.

Just as a simple example, you can add this to the bsp_event_handler in the ble_app_uart example:

case BSP_EVENT_KEY_1:
{			
uint8_t data[6] = "Hello!";
uint16_t length = 6; 
ble_nus_string_send(&m_nus, data, &length);
}

This will make your application send the string "Hello!" each time you press button 2, if you connect your phone via UART in the nRF Toolbox app.

Best regards,
Joakim.