how can i receive data from smart phone??

[wooyongKim]

hi, with good advisers in here, i can build the ble_uart_example and download it.

and using the function 'ble_nus_send_string' in 'ble_nus.c', i can send some messages from nrf51822 to smart phone application 'nrf toolbox'.

but this example just sends messages to smart phone. i want to receive some messages from smart phone also. like communication....

i cannot find receive function in nus...

i am using SDK 6.0.0 and s110 softdevice

[Anders Strand]

Hi.

First of all, i advise you to use the latest SDK (SDK 10, soon SDK11).

When the phone sends data to the nRF device, you will get callback to the function nus_data_handler in main.c. Here you can get the data from p_data.

-Anders

[Javier]

Hi, as said Anders, with "nus_data_handle", you can see the data that your smartphone has sent.

In SDK 9, example "ble_app_uart" you can see how redirect this data to your nrf51822.

static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
     for (uint32_t i = 0; i < length; i++)
     {
        while(app_uart_put(p_data[i]) != NRF_SUCCESS);
     }
    while(app_uart_put('\n') != NRF_SUCCESS);
}

But if you use sdk v6, softdevice s110, here (section Handling of data received over BLE) you can find how you can do it.

void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
    for (int i = 0; i < length; i++)
    {
        simple_uart_put(p_data[i]);
    }
    simple_uart_put('\n');
}