A method of communicating data of 244 bytes or more by one communication

[yokokawa]

Is it ok to execute the following program twice in succession when communicating data of 244 bytes or more with one communication?

do
{
    err_code = ble_nus_data_send(&m_nus, value, &bytes_to_send, m_conn_handle);
    if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) &&
        (err_code != NRF_ERROR_NOT_FOUND) )
    {
        APP_ERROR_CHECK(err_code);
    }
} while (err_code == NRF_ERROR_BUSY);

Thanking you in advance

 

[MartinBL]

Hi,

Inside ble_nus_data_send() there is a call to sd_ble_gatts_hvx(). This function puts your data in a queue and transmits notifications one by one. As long as the queue is not full it is perfectly fine to execute your code twice or more in succession. When the queue is full the function will return error NRF_ERROR_RESOURCES and you will have to handle this in your application.