send large amount of data over nus

[Fiske]

I am using below code to send data over nus. If the data size is 150 bytes, it is OK. However, if the data size is 200 bytes, the nRF51822 will reset. Please tell me how to solve. I am using nRF51822 with softdevie S130. My application is based on ble_uart_app

               if(user_m_conn_handle!=BLE_CONN_HANDLE_INVALID)
               {
                 i=UserUart.RxBuf[1]+2;
                 index = 0;
                 while(i>0)
                 {
                   if(i>20)
                   {
                     while((err_code = ble_nus_string_send(&m_nus, UserUart.RxBuf+index, 20)) == BLE_ERROR_NO_TX_PACKETS )
                     {
                       ;
                     }
                     if (err_code != NRF_ERROR_INVALID_STATE)
                     {
                         APP_ERROR_CHECK(err_code);
                     }
                     i -= 20;
                     index += 20;
                   }
                   else 
                   {
                     while((err_code = ble_nus_string_send(&m_nus, UserUart.RxBuf+index, i)) == BLE_ERROR_NO_TX_PACKETS)
                     {
                       ;
                     }
                     if (err_code != NRF_ERROR_INVALID_STATE)
                     {
                         APP_ERROR_CHECK(err_code);
                     }
                     i = 0;
                     
                   }
                     
                 }
               }

[Roger Clark]

Take a look at the image transfer demo in github,

github.com/.../nrf52-ble-image-transfer-demo