how to save a problem,if one Thread use sd_ble_gatts_hvx() send many package ,but i use vTaskDelay(50)( the freertos delay api ) when one package send ,then send another package . but
some packgae lost data .At the same time other Thread use sd_ble_gatts_hvx() send package ,if
someone package lost data ,how i seek the problem and save the problem...