Hi,
I would like to make a prediction about energy consumption. To do this, I need to know what the minimal interpacket gap is, that can be technical achieved when sending several different frames with the SX1261/2. I am not asking about the regulation. I know those limitation.
I have not found this information in the documentation.
Are there any empirical values or is there even a specification in the documentation that I have overlooked? Thank you very much!
However, I recently did some measurements myself:
The following figure shows a power consumption measurement of the RF part (cf. JP2 on the NUCLEO-WL55JC1). Some adjustments in the stack to reduce the duration between 2 frames have been made. After each transmission an interrupt is triggered which causes a new transmission. Each frame can be sent with its own payload.
I have no idea if the duration between the packets can be reduced even more. The minimum possible gap in my case is about 1.39ms.
For my application, I would prefer to have continuous preamble with regularly embedded data frames. Does anyone know a way to achieve this with the SX126X? As far as I know, the datasheet from Semtech provides no possibility to achieve that.
Thanks
With https://github.com/ExpressLRS/ExpressLRS the packets are sent very close together. From memory down to 400us apart with the sx1280. We havent found a limit beyond trying to fit all the SPI commands in between transmissions.
I dont think a fallback to preamble is available, but it would be neat as an option.
