Sending LoRa packet takes more than 1.5 sec.

[Maciej]

Hi guys,

I'm playing with STM32WL (the Nucleo-STM32WL55JC1 to be precise). Also I'm using the SX1303 LoRa gateway (it's a RPi Hat from Waveshare).

Node is next to the gateway.

When it comes to send of the data, it takes quite long from passing the send command to receive the IRQ from radio:

58s735:MW DEBUG: SEND REQUEST
60s381:MW IRQ radio process...

The ADR is enabled, but anyway I've tried to play with DF, setting it to 5 and turning the ADR but without success.

I plan to use this stuff for light the bulbs and drive the blinders and the 1.5 second for the transmission is a way to long.

Is there any way to speed things up? Has anybody the similar issue? What's even worse - if we are waiting a 1.5 second for the IRQ it may cause a lost of loot of energy in case of battery powered devices.

[Tesla DeLorean]

>>Is there any way to speed things up?

Make the message smaller?

Use a higher bandwidth setting?

Use a lower spreading factor?

[AScha.3]

btw

1.5 sec -> How many bytes you transfer ? message + header + preamble + crc ?

check minimum needed time for your setting :

https://www.semtech.com/design-support/lora-calculator

What its telling ?