Lora transparent serial example code?

Question

Arduino

Hello!
Does anyone have an example on the topic in the cache? What interests me is the algorithm for receiving data via uart and sending it through any available spi lora module, taking into account their features. There are examples of the exchange, they work, but something didn’t come out of the swoop just sending data from yuart.
Baud - the maximum possible, as I understand it, the data must be collected in packets and sent. The end of the reception by yuart, apparently, by timeout or by some sequence.
Share?
Ideally, under the 328th arduino and in both directions)