Sep 8, 2018 · 1 min read
Thanks John Munroe!
Take a look at this article describing GATT and message types and ACKs: https://www.silabs.com/community/wireless/bluetooth/knowledge-base.entry.html/2016/05/02/acknowledged_vs_unac-u6eO. I think for simple BLE tags, they will not keep on retrying the transmission in case of failure (e.g. out of range)
